Issuu

Issue 1 | Volume 8 | 2020

Coatings for Africa 2020 Preview

AND INDUSTRIAL TRADE NEWS

NESS

ILDING

Delta Colours celebrate 10 Years!

14 YO U R

Titanium Dioxide: Industry pleas for relief

D WA R E B U

49 2017

Let Clariant simplify your development

FROM PIGMENTS TO DISPERSIONS Uniquely positioned as a leading global manufacturer of organic pigments, Clariant blends our reputation for quality and innovation into the dispersions we manufacture. Our pigment dispersions improve operational efficiencies and capacity utilization while at the same time reducing the overall cost of pigment usage. Clariant can quickly turn your innovation into reality, positively impacting your people, your profitability and our planet. CLARIANT: FROM PIGMENTS TO DISPERSIONS, COLOR IS OUR CHEMISTRY. CLARIANT.COM/COATINGS

Our ColanylÂŽ & HostatintÂŽ binder free pigment dispersions meet the critical needs of next generation low VOC interior and exterior coatings. Our full line of highly compatible organic and inorganic dispersions have been developed for both in plant tinting and point of sale coloration.

EDITORIAL EDITOR Johann Gerber Tel: 011-713-9042 Email: johann.gerber@newmedia.co.za SUB EDITOR Gill Abrahams Email: gill.abrahams@newmedia.co.za

ontents

LAYOUT & DESIGN Kyle Martin Email: kyle.martin@newmedia.co.za ADVERTISING ADVERTISING EXECUTIVES Natalie Sanders Tel: 082-450-2317 Email: natalies@intekom.co.za

Issue 1 | Volume 8 | 2020

PHOTOGRAPHS

Unless previously agreed in writing, Coatings SA owns all rights to all contributions, whether image or text. SOURCES Shutterstock, supplied images, editorial staff.

DISTRIBUTION & SUBSCRIPTIONS Felicity Garbers Email: felicity.garbers@newmedia.co.za UPDATE YOUR DETAILS HERE Email: register@media24.com Web: www.diytradenews.co.za PUBLISHING TEAM GENERAL MANAGER Dev Naidoo PUBLISHING MANAGER Johann Gerber Email: johann.gerber@newmedia.co.za

News

Feature: Delta Colours celebrates a decade in business

Feature: Coatings industry under threat

Interview: Assistant executive director – Tara Benn

Coatings for Africa 2020 Preview

Technical: Hectorite clay – Unique mineral for manifold

applications

PRODUCTION MANAGER Angela Silver ART DIRECTOR David Kyslinger MANAGEMENT MANAGING DIRECTOR Aileen Lamb COMMERCIAL DIRECTOR Maria Tiganis BRAND STRATEGY DIRECTOR Andrew Nunneley CHIEF FINANCIAL OFFICER Venette Malone HEAD OF HR Camillah West CEO: MEDIA24 Ishmet Davidson Head Office: New Media, a division of Media24 (Pty) Ltd New Media House, 19 Bree Street, Cape Town PO Box 440, Green Point, Cape Town 8051 Tel: +27 (0)21 417-1111 Web: www.newmedia.co.za

Johannesburg Office:

Ground floor, Media Park, 69 Kingsway Avenue, Auckland Park, 2092 Postal Address: PO Box 784698, Sandton, Johannesburg, 2146 Tel: +27 (0)11 877-6111 Fax: +27 (0)11 713-9024

PRINTING Printed and Bound by Novus Print ISSN: 2617-9369 Published on behalf of New Media, a division of Media24 (Pty) Ltd

Printed by

A division of Novus Holdings

While precautions have been taken to ensure the accuracy of its contents and information given to readers, neither the editor, publisher, or its agents can accept responsibility for damages or injury which may arise therefrom. All rights reserved. © DIY Trade News. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, photocopying, electronic, mechanical or otherwise without the prior written permission of the copyright owners.

Positivity welcome! Positivity in our country and the challenges we face as businesses, industries and citizens is a bold concept. I was fortunate to attend a communication course recently where one of the key questions we should ask in all situations is, “Do you want to contribute or contaminate?” It is amazing what that question creates when you respond to emails, respond in meetings, chatting over dinner to your loved ones and conversations with colleagues, friends and family. When you want to contribute, the responses are positive, and you can drive the conversation to a more positive road. When we contaminate, more than half of the conversation will end up unhappy, disgruntled and disengaged. Look at what is happening in our politics, we have drifted so far from contribution that there is complete disengagement, and the people who are affected the most by this are the citizens of the country. Similarly, I urge us to contribute in our industry.

ed’s note

How do we work together? SAPMA has long urged members to submit statistics and data to be included in industry analysis. I know it is a Johann Gerber laborious task, but we will all gain, if we all contribute. Buy local! Yes, margins are tight, and we are all watching our GPs – trust me, so am I, but if we support one another, we block disreputable businesses dumping below quality products in our country and for our hard earned money to leave our shores. Let’s keep our industry healthy and contribute to one another’s businesses to grow in 2020. c

A key question to ask before responding: "Do you want to contribute or contaminate".

news

AkzoNobel to strengthen position in Africa AkzoNobel has entered into an agreement to acquire 100% of the shares of Mauvilac Industries Limited, a leading paints and coatings company in Mauritius. The transaction includes a local production facility, four concept stores and access to a strong distribution network.

Port - Louis in Mauritius: A control access point in the country.

auvilac generated revenue of around €20 million in 2018 and is a leading decorative and specialty paints and coatings manufacturer headquartered in Les Pailles, Mauritius. Their portfolio consists of 85% decorative paints and 15% coatings, offering a wide range of professional and consumer products. The company was founded in 1964 by Roland Maurel Sr. and in July 2014 private equity fund Adenia acquired 95% of shares in the company. “We are happy to announce the acquisition of Mauvilac as it strengthens our footprint in Sub-Saharan Africa and supports our leading position in the African decorative paints market. Mauvilac is a leading company in Mauritius and the proud owner of the best-known paint brand on the island. We look forward to adding such a strong brand to our world class

portfolio and welcoming the employees from Mauvilac to the AkzoNobel family,” said Thierry Vanlancker, CEO of AkzoNobel. “Mauvilac is a true flagship brand in Mauritius, which has been developed for the last 50 years. The company is a leading player with a strong distribution network, well setup concept stores and a large network of retailers. Their strong focus on innovation and sustainable solutions fit seamlessly with the focus of AkzoNobel. We are very excited to integrate such a wellestablished company into AkzoNobel,” added Ruud Joosten, COO of AkzoNobel. Laurent Roussel, CEO of Mauvilac,

4 | Coatings SA

added, “We’re looking forward to joining AkzoNobel. Both our companies have a strong passion for quality, innovation and sustainability. Bringing the energy of the two companies together, will create a promising future for all.” The planned transaction is expected to be completed in the first half of 2020, subject to customary conditions. c

DISCOVER ATTRACTIVE BUSINESS OPPORTUNITIES THE EVENT THAT HELPS YOUR BUSINESS EVOLVE COATINGS RAW MATERIALS PRODUCTION PACKAGING & LABORATORY EQUIPMENT TESTING & MEASURING ENVIRONMENTAL PROTECTION & WORKPLACE SAFETY SERVICES AND MUCH MORE

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news

Coatings for Africa 2020 ready to roll in May! SAPMA in collaboration with the Oil and Colour Chemistsâ€™ Association of South Africa (OCCA SA) is again presenting the greatest coatings trade show in Africa, Coatings for Africa in May this year. The major showcase for the entire African coatings market will take place from May 6-8 at the Sandton Convention Centre in Johannesburg.

s usual, the large-scaled event will provide an unrivalled opportunity for those looking to forge new friendships across the continent. This was certainly evident at the previous show. With SAPMA members responsible for 90% of paints and coatings manufactured in South Africa alone, the association teamed up with OCCA SA and appointed dmg events to stage an international event which attracted

1 700 visitors from 42 countries (12 from Africa). The expo and symposium connected the entire paint and coatings value chain â€“ from manufacturers, raw material equipment suppliers to end-users of the finished product. Held every two years, Coatings for Africa is an essential event for your business to share new ideas, be inspired, create cross-border business relationships and discover

6 | Coatings SA

new revenue streams. You cannot afford to miss it. c

Fast Facts Dates: 6 - 8 May Where: Sandton CC 1700 Visitors 42 Countries

OMEGA FINE PRODUCTS – THE ONE-STOP-SHOP RAW MATERIAL SOLUTION FOR THE COATINGS INDUSTRY

Our goal is to help you achieve your goal whilst being leaders in the supply of dolomite, calcium carbonate and related products to the coatings industry. We pride ourselves on offering high quality, value adding products at a fair and reasonable price.

pecialist in functional fillers WHY OMEGA FINE PRODUCTS: or the coatings industry. • We work with you – finding solutions to your problems. • Our CK93focus is on quality with stringent quality control standards.

NAMWOL

Wollastonite

Dolomite

• Impressive service delivery – before, during and after sales service.

Calcined Kaolin

OUR FOCUS IS ON QUALITY, QUALITY, QUALITY

• Our solutions driven approach allows us to help our customers achieve their goals. • Our continuous value added product development assures we stay ahead of the game.

Talc

Dolomite Dolomite

Silica

W NE New Improved Quality Control.

Silica

+27 (0) 11 316 2064 • +27 (0) 11 316 5727

• We listen. Decorative Stones

Calcium Carbonate Calcined Kaolin

Also available from Omega fine chemicals – Calcined Kaolin, Talc, Silica, Wollastonite and Decorative Stones We are pleased to announce that although Talc is not being manufactured locally anymore, Omega Fine products have imported stock immediately available with more arriving late September

Omega Fine Products (Pty) Ltd

Omega Chemicals (Pty) Ltd Decorative Stones TEL: +27 (0) 11 316 2064 | EMAIL: orders@ofpc.co.za

info@omegachemicals.co.za • www.omegachemicals.co.za Mica

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news

BASF invests in Europe polyurethane dispersion expansion BASF announced a single-digit million-euro investment in the capacity expansion of waterbased polyurethane dispersions at its Castellbisbal site in Spain. The expansion will allow BASF to increase its production capacity by 30%.

e want to continue to provide our customers with high-quality polyurethane dispersions and help them grow by ensuring supply reliability. Considering the rising demand for polyurethane dispersions in Europe, this investment underlines our intention to assume a leading position in the business of polyurethane dispersions,” says Frank Hezel, vice president Resins and Additives EMEA at BASF. Polyurethane dispersions constitute an important addition to the acrylate dispersions business. By expanding its portfolio in the field of adhesives, parquet flooring, automotive and industry coatings, BASF is making a valuable contribution to the change from solvent-based coating systems to environmentally friendlier and more sustainable water-based systems. FURNITURE AND FLOORING PLATFORM Coatings for parquet flooring and furniture: Scratches on the parquet floor and red wine stains after parties are difficult to remove. Renovating the floor costs a great deal of money. That will soon be a thing of the past, thanks to the new Joncryl® platform for polyurethane dispersions and hybrids. BASF has deliberately expanded the product range for the furniture and flooring industry.

AUTOMOTIVE AND INDUSTRIAL PLATFORM The production of modern cars involves the use of an ever-increasing mixture of materials. Apart from steel and aluminium, for example, car makers are increasingly using various types of plastic. This is where the adhesion feature of the entire coating structure comes into play to ensure good surface quality. The new Basonol PU platform ensures that the primers and base coats used for automobiles have better adhesion qualities and feature a smoother look. The reduced need for solvents constitutes an important contribution to sustainability. ADHESIVES PLATFORM Flexible packaging: In the packaging industry, there is a demand for sustainable packaging.

The plan is to use the Epotal® Eco product line to produce water-based compostable raw materials for adhesives at Castellbisbal that are going to play a decisive role in particular regarding the development of bio-degradable packaging material. Epotal® Eco is ideally suited in the production of multi-layer films for flexible packaging

8 | Coatings SA

based on biodegradable plastic material, which may be a solution for the new challenges faced by the packaging industry. Furthermore, the capacity expansion at Castellbisbal also considers the increasing publicly voiced concern about plastic waste as well as new regulatory challenges such as the much tighter EU recycling quotas. Soft-touch varnishes and lamination inks: Brand owners are continuously working on product differentiation through the enhancement in product quality, the use of natural and organic products and the improvement in packaging design. Matt and soft-touch varnishes enhance the quality image of the packed products. Joncryl® water-based polyurethane dispersions feel luxuriously smooth and velvety to the touch and have a matt yet clear finish. Apart from the emotional aspects, Joncryl® polyurethane dispersions have the technical qualities for waterbased lamination ink that are needed for today’s multi-layer flexible (food) packaging. BASF’S DISPERSIONS AND PIGMENTS DIVISION The Dispersions and Pigments division of BASF develops, produces and markets a range of high-quality pigments, resins, additives and polymer dispersions worldwide. c For further information about the Dispersions and Pigments division, please visit www.dispersions-pigments.basf.com.

AN H C

,A GE

DAPT & ASSI

MI LA TE

The polymer that creates colour Synthetic Polymers produces high-quality polymers for various myriad sectors such as decorative coatings, automotive coating, medium to heavy industrial coating and wood coating etc. Solvent based polymers are Synthetic Polymers core focus; however, our plant also has the capability of producing water-based polymers. A wide variety of resins including acrylics, aminos, saturated polyesters and the more popular alkyd resins as well as some specialist resins are produced using the strictest quality standards in our plant. Research and development take place in our state-of-the-art laboratory with the latest equipment and highly qualified polymer chemists. Convenient delivery with our twenty-metric ton bulk delivery vehicle with lead times between twenty-four and seventy-two hours.

• Long oil alkyds • Medium oil alkyds • Short oil alkyds • Short & Medium chain stopped alkyds • Urethane alkyds & Oils • Styrenated alkyds • Hydroxy functional acrylics • Thermoplastic acrylics • Specialty alkyds • Amino resins • Thermoset acrylics • Saturated oil free polyesters

010 596 4444 | sgb@syntheticpolymers.co.za | www.syntheticpolymers.co.za

news

BCF Update The British Coatings Federation has urged its government to understand its need for alignment with the EU.

he Chancellor of the Exchequer made the news recently with comments he made during an interview with the Financial Times, in which he addressed the issue of future trading agreements with the EU. He told the paper: “There will not be alignment, we will not be a rule taker, we will not be in the single market and we will not be in the customs union – and we will do this by the end of the year.” Commenting on these developments Tom Bowtell, CEO of the British Coatings Federation, said: “We were disappointed that the current government’s version of the Withdrawal Agreement removed some of the commitments to regulatory alignment for chemicals that were in the previous Theresa

May deal. The Chancellor’s comments raise even more concerns for the coatings industry about the possibility of substantial regulatory divergence in the future. A recent BCF member survey saw 90% of coatings manufacturers express their fear of having a duplicate set of chemical regulations through a UK REACH, and all the extra bureaucracy and cost this would bring.” These comments came as the Brexit Withdrawal Agreement Bill was finally approved by the UK Parliament. The UK formally left the EU on 31 January and entered into a period of new, and

The British Government is being urged not to alienate it from the EU.

10 | Coatings SA

separate, negotiations about a future free trade agreement between the UK and EU, with a transition period on current terms running until 31 December 2020. “We need government to understand the complexity of the integrated chemicals supply chain and come up with an appropriate free trade deal to prevent, or at least minimise, substantially added costs or disruption to our members. The BCF will continue to engage in forthright yet constructive dialogue with civil servants and politicians to ensure a workable solution is found for our sector,” continued Bowtell. c

Coating almost everything these days Ferro South Africa offer specialised products benefiting thousands of end users with improved efficiency, higher output and improved profits. We are a dynamic South African manufacturer and supplier of products to industry.

www.ferrosa.co.za

www.budgroup.co.za

Advertorial

Chromaflo makes two exciting acquisitions Chromaflo Technologies would like to remind the coatings industry in South Africa of two exciting acquisitions made in 2019 Liquid Colours

. On 31 July 2019 Chromaflo Technologies acquired the colourant dispersion division of Liquid Colours based in Johannesburg. The Liquid Colours’ colorants business, which includes ranges of point of sale and in plant systems, has become part of Chromaflo Technologies portfolio. 2. On 4 Nov 2019 Chromaflo Technologies acquired the Trading and Dispersion businesses out of Rolfes Colour Pigments International. The acquired RCPI dispersion business has been integrated with the Chromaflo Technologies South Africa operations. Simultaneous with the purchase, Chromaflo has sold the RCPI Trading business to Chemipol Solutions, a wellestablished distributor of raw materials to the coating market in South Africa. Scott Becker, CEO Chromaflo Technologies reiterated its dedication to the future and expansion of Chromaflo’s position in southern Africa, not only in terms of our footprint in the region, but also the diversity of product ranges and technologies we bring to it. The acquisitions of the dispersion businesses provide Chromaflo with the critical mass to provide cost effective colourant solutions to South African and subSaharan regions. The sale of the pigment trading business ensures that Chromaflo can

focus on its core business of dispersions while Chemipol Solutions who has been servicing the market since 1999 can focus on the traded lines that fit well into their product offering. Our highest priority is meeting our customer’s requirements and expectations and we believe this is paramount to achieving success. We remain dedicated to providing the quality products, service and technology innovations your business requires. Chromaflo will be integrating the manufacturing activities under one roof producing all products of acquired companies. The new manufacturing facility is expected to go onstream in couple of months. The acquisitions bring the best of talents from the acquired companies that helps in maintaining high product standards Chromaflo is known for and addressing customer needs. The ability to use Chromaflo unique colour matching and prediction tool, Innovatint across all acquired product lines will be an added benefit to customers adding on to Chromaflo. We are also very pleased to announce that Lyle Peters, formally general manager of Liquid Colours has joined Chromaflo as commercial director of our expanded operations in South Africa. Chromaflo Technologies SA reports to Chromaflo APAC region headed by John Dry, vice president and managing

12 | Coatings SA

• Purchase of Liquid Colours dispersion lines 1 Aug 2019 • 32 Liquid Colours staff • Dispersion product lines: • Decotint (POS universal) • Versatint (POS universal retail 50/100ml stainer bottles) • Multisperse (In-plant water-based) • Multitint (In-plant universal) • Alkytint (In-plant solvent-based alkyd) • Unisolve (In-plant solvent-based industrial) • Trans-Ox (In-plant water and solvent-based transparent iron oxide) • Customer specific lines • Selected production equipment

Rolfes Colour Pigment International • Purchase effective 4 November 2019 • Pigment dispersions are core focus so retained, manufactured and marketed by Chromaflo. • Dry pigments and additives noncore products thus sold to Chemipol Solutions. • All product lines: • Procol / Amazon (POS universal) • Pro Reduced (POS universal retail 50/100ml stainer bottles) • Rolfesperse (In-plant water-based) • Rolfes Universal (In-plant universal) • Rolfesolve (In-plant solvent-based alkyd) • Rolfesolve Uni (In-plant solventbased Industrial) • Customer specific lines • All production equipment

director APAC. We thank you for your continued support and look forward to mutual beneficial growth. c

Phone: +27 11 084 1600 E-Mail: adminSA@chromaflo.com Chromaflo Technologies Africa 17 Crusher Road, Crown Ext. 3. Johannesburg 2095, South Africa www.chromaflo.com

news

GOVT HEEDS COATINGS INDUSTRY’S PLEA FOR IMPORT DUTY RELIEF The South African coatings industry has provisionally been granted a temporary rebate on the import duties for titanium dioxide, a vital component of paint and coatings production which is not available from local suppliers and therefore significantly increases local manufacturing costs.

he proposed concession follows urgent appeals to the government’s International Trade Administration Commission (ITAC) by SAPMA members, spearheaded by Kansai Plascon, and has now been published in the Government Gazette of January 31 this year. In stating its motivation for a temporary rebate on import duties, ITAC says titanium dioxide is a vital raw material in the manufacturing of coatings or paint products in the South African Customs Union (SACU). It also serves as a vital raw material across many other manufacturing industries with the paint industry one of the biggest users as it uses the raw material as base of most paint colours. There is currently no SACU manufacturer of titanium dioxide because the last local manufacturer, Huntsman, closed its local plant in 2016. Since then all titanium dioxide requirements – other than those from Europe for which a free trade agreement is in place — have had to be imported at a 10% customs duty. “The duty currently serves to unnecessarily increase the cost of importing titanium dioxide and consequently the cost and prices of manufactured end-products, including paint,” ITAC states in the Government Gazette. ITAC adds that given the escalating prices of titanium dioxide on the global market, it is imperative that the rebate be created to reduce the cost burden on manufacturers in the paints and coatings industry. ITAC also acknowledges in the

Government Gazette that local coating manufacturers are facing significant import competition of paint from other countries and that the current 10% import duty on titanium dioxide therefore creates a cost and price disadvantage for locally manufactured paints and coatings. It adds that there is a potential local manufacturer of titanium dioxide, Nyanza Light Metals, and support for this effort is acknowledged. The creation of a rebate facility will be an equitable solution for all parties while Nyanza Light Metals continues with its work for construction of a South African titanium dioxide plant. ITAC has now, as is customary in Government Gazette announcements, allowed a month for comments or objections to the proposed rebate – the extent of which also still has to

14 | Coatings SA

be finalised. Commenting on the likelihood of a rebate of the customs duty, SAPMA executive director, Deryck Spence, said: “This is good news for a wide section of the South African economy. The coatings industry, along with a host of other industries that has titanium dioxide as essential raw material would become more competitive with the import duty removed. Included here are producers of automotive products, adhesives, paper, cosmetics, pharmaceuticals, even sunscreen and toothpaste manufacturers. It is most gratifying that the government has heeded the well-structured plea of our members — with Kansai Plascon to the fore — and generally instils confidence in government’s positive future response to other measures that are still shackling the coatings sector.” c

news

Visit Contan at Coatings for Africa 2020! Contan Buckets & Pails, a specialist division of Polyoak Packaging, will be exhibiting at this year’s Coatings for Africa (CFA Expo) in May to promote its range of plastic pails specially developed for the paint and coatings industry.

ontan will be showcasing its 1 litre and 5 litre PolyCans, as well as its 10 litre and 20 litre PolyPails, which nest compactly inside each other for efficient transportation. The Contan range for paint and coatings is tamper-evident and secure, yet easy to open. Visit Contan at stand L05 to see its award-winning OctoGrip™ Lid with matching 20L PolyPail for paint. The patented OctoGrip™ Lid won a gold medal at this year’s Gold Pack Awards, in recognition of it solving the problem in the paint industry where building contractors want to colour-tint paint to match customer specifications. After tinting, the lid

is replaced on the bucket, but some buckets end up leaking if they roll over in transit. The OctoGrip™ Lid is the smart locking system that prevents accidental spills. The tamper-evident, fully recyclable polypropylene OctoGrip™ Lid features eight locking tabs, which grip tightly onto the bucket. Its robust tamper band provides additional strength to survive the roughest supply chain and provides excellent top load strength to enable efficient stacking. It’s also simple to open with instructions embossed on the lid. The Gold Pack judges tested the OctoGrip™ Lid extensively, filling it with water and treating it roughly

15 | Coatings SA

to test if it would leak. They were impressed enough to award it the top position in the Packaging Related category for 2019. INVESTING FOR EXCELLENCE Along with its innovative range of buckets and pails for the coatings industry, the company’s one-stop service includes packaging design, mould manufacture, packaging testing and technical support. Its extensive distribution network, with more than 14 sales branches across southern Africa, underpins its excellent customer service. In its continuous drive for excellence, Contan has made significant investments at its

news Roodekop facility including state-ofthe-art warehousing functionality, digital logistics enhancements and fleet enlargement. SERIOUS ABOUT SUSTAINABILITY The company takes its commitment to Extended Producer Responsibility very seriously and is the only plastic bucket producer that is a contributing member of POLYCO, the industry’s non-profit body, established to focus on reducing the amount of polyolefin waste going to landfill. Over the last five years POLYCO has invested almost R36m rand in projects to collect and recycle 19 000 tonnes of polyolefin plastic packaging including buckets and pails. Currently POLYCO has over 50 additional projects underway nationally to improve recycling and plastic waste collection. Contan voluntarily contributes raw material levies towards promoting

and growing the collection and recycling of post-consumer polyolefins, including polypropylene buckets and pails used in the paint and coatings industry. The Polyoak group is also the first plastic packaging manufacturer in South Africa to pledge to the global Operation Clean Sweep initiative, demonstrating its commitment to Zero Plastic Pellet Loss into the environment. “We are confident that our diverse range of lightweight, robust plastic paint containers brings manufacturers savings and reduces their carbon footprint. Contan is a sustainable supplier partner that assumes responsibility for the end life of our packaging through active participation with POLYCO,” concludes Lambrecht. “By partnering with Contan, paint manufacturers and brand owners can actively contribute towards reducing packaging waste to landfill and help

drive recycling initiatives, which last year sustained almost 60 000 jobs. We look forward to exploring how Contan can add value to customers’ business in an innovative and sustainable manner.” c For more information, call NIC BOTHA ON 011-724-3800. INVESTING FOR EXCELLENCE

Visit Contan at stand L05 to see its award-winning OctoGrip™ Lid with matching 20L PolyPail for paint. The patented OctoGrip™ Lid won a gold medal at this year’s Gold Pack Awards, in recognition of it solving the problem in the paint industry where building contractors want to colourtint paint to match customer specifications.

Quality Control Instrumentation Accurate ∙ Repeatable ∙ Reliable www.bamr.co.za 021 683 2100 sales@bamr.co.za Elcometer 456 Coating Thickness Gauge • Scan probe for measuring large areas quickly • Fastest gauge on market – 140+ readings per min • Bluetooth / USB output to ElcoMaster® Software • Accuracy ±1%, Repeatability, Range: up to 25mm • Full, menu driven, graphics display - easy to use • Integral & Separate probe options available • Complies with ISO & other international Stds • Accuracy – ±1%; Range – up to 25 mm

Elcometer 480 Gloss Meter

Elcometer 224 Digital Surface Profile Gauges • Accurate, immediate and repeatable results • Separate probes measure on pipes and tanks • Fast reading rate of 60+ readings per minute • Range – 0 to 500 microns; Accuracy – ±5% • Menu Driven for easy operation • Cost per test is significantly lower than other test methods such as Testex Tape • Readings can be downloaded to ElcoMaster® Software for easy generation of reports

Moisture Meters

Elcometer 319 Dewpoint Meter with Bluetooth • Temp, RH, Delta T, Surface Temp – all in one unit with Bluetooth capabilities • Single handed operation, Easy menu-driven user interface • Conforms to and exceeds ISO 8502-4 • Precise accurate measurement • Create reports using ElcoMaster® Software • Handheld gauge or as a stand-alone data logger • Accuracy – ±0.5°C; Resolution – 0.1°C

• Gloss, Haze, % Reflectance in one unit • Up to 3 times faster than any other hand-held glossmeter in Std Mode – 10x in Scan Mode • Provides real time, accurate gloss values over the entire surface area • Traceable to BAM standards • Automatically calibrates & stores values and tile serial number for complete traceability

• Pin Type, Non-destructive or Dua • Analog or Digital • Low Cost Units to Moisture Measurement Systems with download facilities to computer • Popular for: Building Materials including Concrete and Screeds, Wood, Paper, Grain & Crops • Used by Industry leaders

Elcometer 510 Automatic Adhesion Test • Automatic, easy to use, fully portable dolly pull off tester • Smooth load application up to 100 MPa • Rugged & lightweight • Ideal for frequent testing • Measures on small, curved and flat surfaces • Compatible with ISO4624 & other Standards • Store 60,000 readings with individual pull graphs in 2,500 alpha numerical batches • USB, Bluetooth output to free ElcoMaster®

Also Available – meters to test Anemometer, Angles (360 deg), Distance, Hardness, Inspectors’ Accessories, Internal Illuminated Viewing, Moisture, NDT, Paint Testing Equipment, Pinhole & Porosity Detection, Rebar & Metal Locators, Surface Profile, Surface Preparation, Surface Cleanliness, Ultrasonic Material Wall Thickness, Vibration

16 | Coatings SA

A Non-Silicone Anti-foaming and Defoaming agent for waterborne coatings and wet processing DESCRIPTION Sunburst 421 was formulated using the latest raw materials and technology available. Laboratory tests showed excellent results in quelling aeration in a wide range of applications including Emulsion Polymers, Surface Coatings, Textiles, Paper Coatings, and High PVC Paints during manufacture. ADVANTAGES • Highly active nature producing long lasting efficiency • Rapid knockdown of foam in manufacturing • Excellent product stability resulting in a surface free of defects • Excellent dispersability • Silicone Free

SUNBURST 421 • is recommended for use in a formulation at a dosage of 0.20% – 0.50%. • To achieve greater effectiveness, it is suggested that the level of defoamer be split at the grind stage and let down stage. • The optimum amount required is determined by evaluation of the product in the paint formulation being used.

SUNBURST 421 TYPICAL PROPERTIES: Appearance

Light straw amber

Activity

100%

Solubility

Disperse in water

Brookfield Viscosity @25˚C 1000 cps Density

Approx. 0.85gm/ml

APPLICATION PROPERTIES A 0.5 % addition of defoamer was added to an emulsion polymer solution to determine the percentage foam knock-down in accordance to Sancryl Chemicals quality control test methods. COMPARISON:

SUNBURST 421

Commercial 1

Commercial 2

Initial foam height

75 mm

Final foam height

0 mm

4 mm

2 mm

% Foam knockdown

100%

95%

97%

Knockdown time

2 seconds

This graph above shows the effect of aeration on viscosity. Greater aeration results in a higher viscosity.

Contact Sancryl directly for information or to order: • www.sancryl.co.za +27 (0)31 902 1422

FOAMING ... Sometimes VERY DESIRABLE and other times ... NOT!

Quells aeration in Emulsion Polymers, Surface Coatings, Textiles, Paper Coatings, and High PVC Paints during manufacture! • www.sancryl.co.za •

+27 (0)31 902 1422

SANCRYL CARE! BECAUS E WE 6022 Sancryl Chemicals Coatings SA 2x fp ads March 2020

SAPMA update

Delta Colours turns 10! Delta Colours are thrilled to announce their 10th year anniversary.

elta Colours was originally founded by Abe Louw and Shawn Hays in Atlanta, Georgia in 1995. The focus of the company then, was to supply the North American plastic, coatings and ink markets with their colour needs. Delta Colours filled a niche role and became a supplier of colour solutions, which was a fresh approach versus the traditional model of suppliers performing a basic logistical service as a catalogue distributor. This business plan was very successful, and the company and brand soon grew to become popular both with customers and suppliers. After acquisition of operations in Atlanta in 2006, and returning to South Africa, Abe Louw established Delta Colours in South Africa in September 2009. The company started with two employees and grew to the current team of 15 with all warehousing and distribution

outsourced to global distribution chains. The business is based in Franschhoek in the Western Cape (where it was originally established) and the current directors are Abe Louw, Petrus Scheepers and Charlene Saayman. The Delta Colours approach was always to be a local supplier of world class quality products, offering a 24-hour turnaround on local deliveries as well as sample requests. This attracted the leading global producers to add their products to its colour basket making it a complete range of inorganic, organic and effect pigments. It is mostly due to the highly technical and professional calibre of its sales team and a focused approach, which results in excellent service to its customers. The in-depth knowledge of global market trends in these relevant industries as well as the relations with all the global top brand

From left to right Front row - Danielle Gage, Petrus Scheepers, Abe Louw, Charlene Saayman Middle Row - Sharon Oschman, Gen Gage, Afsana Nundeekasen, Melissa Steyn, Willem Louw Back Row - Hennie Daniller, Michael Rautenbach, Shaun Olivier, Franny Brown, Derek Ayres

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manufacturers put Delta Colours in a unique advantage in this market. The company has a dominant supply position with most multinationals for this reason. At Delta Colours everyone goes the extra mile to ensure consistent quality and service not only to the customer, but to all stakeholders involved. It is due to this dedication and enthusiasm from the entire team that has helped it witness such a milestone! Its focus has predominantly been in the pigments arena, supplying various grades of powder pigments to the plastic masterbatch and coatings industries across South Africa. The last eight years saw the range expanding into the additives space supplying a range of specialised polymer additives and representing some world-class global producers. The office in Franschhoek is currently busy with the setup of a new in-house colour match laboratory. With this facility, Delta Colours will be able to assist some customers with quick and accurate recommendations for the best colour match to suit the desired application. Delta Colours success is incomplete without the encouragement and support of its customers and they would like to thank all its customers for trusting them to supply excellent quality and service and an increasingly improved product basket. All requests, demands and feedback, have helped shape the company into what it is today. Looking ahead, Delta Colours will continue to focus on growth within the South African and African markets, with the introduction of some new products especially in the additives space. Maintaining strong relations with key principles and customers is critical to growth for another decade to come. c

c For more information, call 021-876-4167.

Don’t follow the herd!

your local partner in colour pigments At Delta Colours we strive to be the leading supplier of an extensive range of high quality pigments and additives from world class manufactures. We offer excellent customer service, technical support, local stock availability and next day product delivery. Our extensive product range includes ultramarine blues, metallics, organics, fluorescence, pearls, glitters, thermo-chromes, cadmiums, lead chromates, iron oxides, CICP’s, phthalo’s, carbon black, buff & grey titanium dioxides, selected additives and cutting-edge technology in anti-corrosive packages. Visit our newly revamped website for more information!

follow an expert pigment supplier

Phone: +27 21 876 4167 · Email: orders@deltacolours.com 71 Village Artisan, Cabriére Street, Franschhoek 7690 Western Cape, South Africa

WWW.DELTACOLOURS.COM

feature

Coatings industry under threat “The opportunity for selfdetermination for paint and coatings companies is now” – Deryck Spence, Executive Director: SAPMA. Self-determination means the right to govern yourselves. To make policy and to dictate procedures which make sense to you as business owners, within the context of the way you do business and within the culture of how you have operated since inception.

ndustries and sectors are under threat from increasing state intervention, including statutory bodies, statutory determinations, which are state regulated wages and conditions of employment, and from a BBBEE perspective, under threat from charter councils that intend to impose BBBEE targets and regulations making it impossible for the average company to survive. In simple terms, the way companies have conducted business in the coatings industry could change drastically – and no one will be spared. “Who you employ and indeed who is allowed to do business with, will be controlled by others unless you take control now,” says Spence. The window to self-determination for coatings industry manufacturers, importers and distributors, retailers and contractors is fast closing. Paint and coatings are seen variously as an attractive and profitable sector of industries within the construction

space by other sectors, which need the scale of additional members, companies and opportunities. Also trade unions are eyeing the opportunity to increase paying membership by capturing the sector, and by transformation barons, modern day pirates enabled by government policy and funds such as the Black Industrialist Program, eyeing market share and encouraging policy changes to capture client markets and force you out of business.

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Shareholders, CEOs and board members of companies operating in the coatings sector must be aware that there are multiple calls for the industry to be split-up and incorporated into a variety of preexisting industries and sectors and in the process, resulting in the identity of paint and coatings being lost forever. As an example, the Construction Charter Council, has without any mandate or engagement

feature whatsoever with SAPMA or any other representative structure from our sector, included in its scope the Paint and Coatings Sector and in-particular the retail component of this sector. “The CIDB has engaged in its rollout strategy again with no consultation with representatives from our sector. The Department of Trade and Industry (DTI) has encouraged all of these activities despite having engagements with SAPMA,” explains Spence. The latest onslaught has come from the National Bargaining Council for the Chemical Sector (NBCCI), which has implemented a narrow Bargaining Council Agreement with five trade unions, with only 17 companies in Paint and Coatings actually being formally represented in the process. This representation is through the SCA, the Surface Coatings Association. To date the threat to the balance of our sector which consists of over 500 companies, has been minimal, since the agreement recently re-negotiated and signed for a two-year period, has only related to those parties represented in the negotiating forum. However, no player, whether organised labour such as the trade unions at the table, or organised business representing the companies which are currently covered by the agreement within the NBCCI, has hidden their next objective, which is to have the new Bargaining Council Agreement extended by the Minister of Labour, to cover all non-parties. If you are not one of the 17 companies, which is currently a paying member of the Surface Coatings Association, then you are a non-party. If the minister of Labour agrees to such an extension, then you as a nonparty will have no rights, but all of the obligations inherent in the existing Bargaining Council Agreement, including having to comply with the newly negotiated wage rates, in excess of (R45 an hour) and all of the other conditions of employment recently introduced. SAPMA is concerned that our members are simply not ready to be absorbed into this structure, whose making they played no role or part

in. “What we are doing is initiating an engagement with the NBCCI to explain that we have never been consulted in how the NBCCI has been constructed, and importantly that we would vehemently resist any attempt to create a scenario where the vast majority of our members were covered, via an extension with no say, input or mandate. There is no guarantee however, that the NBCCI cares that the companies considered to be Non-Parties have not been consulted and have not given their mandate for an extension,” explained Spence. “Now is the moment that as SAPMA, we either draw that line in the sand and force the NBCCI to consult prior to any extension and seriously consider the concerns and priorities of paint manufacturers, retailers and contractors who are not SCA members, or simply abandon our members to individually accept their fate. This is never going to happen!” says Spence. “As we move into this phase of considered strategic engagement, we are also seriously considering engaging with the (DTI), to establish a Paint and Coatings Charter. A BBBEE scorecard of the Paint Manufacturers, Retailers and Contractors Sector, by it and for it. Currently our members have been unilaterally absorbed into the Construction Sectors Charter Council with no engagement or mandate,” he remarked. “A one-sided decision by employers and trade unions in other sectors, acting in concert with the (DTI), because we are easy, un-unified pickings. In that context we are now dictated to by a viciously uncompetitive and one-sided Construction Charter Council who have no intention of providing paint manufacturers, retailers and contractors any recognition or voice whatsoever. The result is that there is ownership, management control, skills development and even procurement targets dictated by unseen controlling interests, endorsed by the Minister of Trade and Industries, which are prohibitive, not practical and destined

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to force the majority of current companies out of business,” added Spence. Many small and mediumsized companies have chosen to ignore BBBEE. However, the reality is that BBBEE will dictate who you buy product from, who you supply product and services to, and regardless of how solid your current relationships are with your customers, they will be forced because of how the system works, to find more transformed suppliers with better BBBEE ratings than yourselves. If SAPMA does not facilitate that its members collectively take responsibility for BBBEE in the Paint Manufacturers, Retailers and Contractors Sector, this sector will not survive, and the majority of members will not remain in business. “If you, our members do not work with us in this pursuit, then collectively we will have betrayed the legacy of a strong and proud sector we have inherited,” he said. “What we ask is for your active and mindful involvement in the activities we are currently organising for 2020. We need your involvement at our meetings and workshops, your considered mandate when we ask for permission to engage and proceed, and importantly where you have reservations and are opposed on issues, for you to timeously, vociferously and urgently raise these issues with SAPMA. Where you have dedicated BBBEE, HR or personnel managers or supervisors we ask you to make these people available to SAPMA to work with collectively on a strategy designed to preserve, protect and strengthen our sector,” adds Spence. SAPMA have contracted the services of Dr Ivor Blumenthal to lead our Bargaining Council engagement and our BBBEE strategic engagement with the DTI and other organisations and ask that you are responsive to his emails and appeals for co-operation over the coming months. This is a worrying time but also will prove to be an exciting and seminal moment in the history and legacy of SAPMA on-behalf of the South African paint manufacturers, retailers and contractors sector. c

Q&A

Painting proficiency is Tara Benn’s passion SAPMA’s assistant executive director, Tara Benn, shares her career highlights, the roadmap for SAPMA looking at the new decade, and the opportunities for members. Q. Share with our readers a bit about your daily work routine. A. SAPMA provides the training requirements of the paint industry through its training arm, the SA Paint Industry Training Institute (SAPITI). We initially offered training of paint chemists in a course with City and Guilds international accreditation and are now negotiating with local universities to introduce the qualification into their curriculum – the Nelson Mandela Metropolitan University in Port Elizabeth has already done so. We hope to develop our training offering even further in 2020 and will hopefully be able to share more of these developments by the time of our AGM in May. Q. Who and what skills do you teach? A. SAPMA membership includes suppliers of raw materials and services to manufacturers as well as the traditional distribution channels of paint, such as retail outlets and painting contractors. We have recently developed a specific course for technical sales staff in the industry who need to have some technical knowledge of the coatings they are selling, and also have an in-house manufacturing course offered at factories. To accommodate paint retailers, who cannot afford the time for their staff to attend training course, we have developed a video-based product and application course covering all areas of substrate painting. By accessing the SAPMA website, paint retailers can provide training for staff to offer a better service to the consumer who often does not know what type of paint or ancillary products are required for home painting jobs. Many people are sold the wrong kind of paint and

cannot find a salesperson with sufficient knowledge to help them make a success of their DIY painting projects. Finally, SAPMA also provides application training for professional painters. There are lots of paint contractors in South Africa, but none have had anything but token on-the-job teaching from employers since official training provided by the old Building Industries Federation ceased in the mid-1990s. There is a desperate need for qualified painters in the market and our training imparts vital skills to all contractors with unqualified painters to improve productivity, profitability and keep customers happy. This painting training also could help find work for South Africa’s huge number of jobless people. Q. Share some of your challenges. A. Firstly, convincing manufacturing employers to train staff by utilising the grants that they have, in fact, already paid for through the training levies imposed on them. Too many companies simply do not take the time to apply for this or seem ignorant about it. Securing government grants for our own training programmes is also an uphill battle! Mountains of red tape, lack of continuity of staff in government departments, and general apathy from these departments – as well as the coatings industry itself. SAPMA member retaining is another challenge, it is important for our association to reiterate the benefits of its membership. Our established relationships with government to facilitate engagement on industry issues are critical to members. I am also busy looking at our communication strategy going forward. We are all inundated with

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Tara Benn communication, and I want to find a simpler, easier way to communicate giving our members exactly what they need, when they need it. Q. How did you get involved at SAPMA? A. I have had a diverse career, covering staff recruitment followed by seven years at the accounting firm, Deloitte, handling the secondment of senior auditors to USA branches. In Botswana, I worked as an admin assistant to a project manager and at one of the private schools handling student admissions and served as PA to the headmaster. After returning to South Africa, I joined SAPMA and was recently promoted to handle the duties for admin and training. Q. What career advice have you found helpful and who gave it to you? A. One of my previous employers once said to me: “Don’t leave for tomorrow what you can complete today.” That certainly works for me. c

010 596 4444 | sgb@syntheticpolymers.co.za | www.syntheticpolymers.co.za

Coatings for Africa 2020

Coatings for just 67 da

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Coatings for Africa 2020

Africa 2020 ays away!

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Coatings for Africa 2020

Coatings for Africa 2020 In line with the changing face of Africa’s coatings industry, Coatings for Africa 2020 show, taking place 6-8 May 2020 at the Sandton Convention Centre in Johannesburg, sets out to drive innovation and education in the coatings industry across the continent.

oatings for Africa is organised by dmg events and co-hosted by The Oil & Colour Chemists’ Association (OCCA) and the South African Paint Manufacturers Association (SAPMA). The event brings together the value chain of Africa’s coatings industry, from raw material suppliers to end users. This is the biggest showcase of coatings technology, paint and related products on the continent. Coatings for Africa will feature technical papers, keynote presentations, AfCFTAunlocking Africa’s trade potential as well as unfolding the relevance to business and investment. The two-day conference aims to attract international, regional and domestic senior public and private sector leaders, technical managers, product managers, buyers and all related professionals across the continent and beyond.

FEATURED SPEAKERS INCLUDE: • Andy Doyle, president, World Coatings Council • Daniel Silke, global economist • Mohammed Sanaobar, regional technical director, Wacker Academy • Philippa Rodseth, executive director, Manufacturing Circle • Mukund Gogte, regional technical sales: Ashland Specialty Ingredients, Coatings BU • Roberto Mazzari, technology manager, CHT Group

Company Name: BAMR Stand: L13 Contact Number: 021-683-2100 BAMR is a leading supplier of topquality coatings and corrosion measurement instrumentation and equipment in southern Africa and Africa. In partnership with the market leaders in the world, BAMR provides leading-edge technology and high-quality coating and corrosion measuring instrumentation to businesses, with personalised service.

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More speakers and presenters will be announced closer to the event. We are proud to be introducing a new feature this year — a networking evening known as the Captains of Industry gala dinner that’s happening on the evening of the 6th of May that will be a ‘by invitation only event' hosting MD’s, directors and CEO’s of paint and coatings manufacturing companies and retailers across South Africa and Africa as a whole. The dinner is a gathering of key personal in the industry to network in a more relaxed environment. c For more information, call 011-783-7250.

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Coatings for Africa 2020 Company Name: Bud Group Stand: C01 Contact Number: 010-003-7080 www.budgroup.co.za For the first time, the Bud Group through its platform, Bud Chemicals and Minerals (BudChem) will showcase its chemicals and minerals for the coatings and related markets, through six of its companies on one Bud stand. Visitors can learn more about its numerous products and how they can create value and growth. Products include, but are not limited to: Calcium carbonate, pyrophyllite, fillers, additives, various solvents, powder-coating, tileglazes, tile decorative inks, gelcoats, bonding pastes, resins, dispersions,

rheology modifiers and pigments. It may just be the one-stop-shop to meet the people that produce and sell these products. Our represented companies

are Omya-Idwala, Ferro Coatings Resins, Ferro Dispersions, NCS Resins, Vedoc (a division of Ferro SA) and CJP Chemicals.

Company Name: Clariant Stand: D09 Contact Number: 011-041-0240 piers.kure@clariant.com Clariant, a focused and innovative specialty chemical company, brings an immersive and vivid colour explosion to this yearâ€™s Coatings for Africa. Its range of organic pigments and pigment

preparations, produced by sustainable and environmentally safe practices, will be showcased. Clariantâ€™s highperformance pigments demonstrates its continued innovation in providing tailored customer solutions for coatings across various sectors. Customers are invited to come and experience cutting-edge quality coatings

for multiple applications at the Clariant at booth (D09). Visitors can explore the wide range of Clariant solutions for coatings developed for multiple application areas. Specifically aimed at assisting automotive, decorative and industrial coatings manufacturers to reach their desired sustainability goals.

Company Name: Rhine Ruhr Process Equipment Stand Number: J17 Contact: 011-609-0411

systems, dispersion, wet grinding or milling, filling, labelling, solvent recycling, water treatment and cleaning solutions to offer its clients the best in class choices for their production facilities. Rhine Ruhr remains committed to offering its existing and new clients premium service and welcome the opportunity to meet with you at the upcoming Coatings for Africa exhibition to discuss your specific needs.

Rhine Ruhr Process Equipment (is a leading technology supply partner within the coatings industry with a history spanning more than 60 years. The business has partnered with global leaders in each respective unit operation encompassing powder handling and dosing

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Coatings for Africa 2020 Company Name: Synthetic Polymers Stand Number: H03 Contact: 010-596-4444 Synthetic Polymers can’t wait to engage with visitors at its stand (H03) for a sneak preview into its constantly increasing product range and future projects. The company aims to establish itself as a one-stop solution on majority of the polymers used in various coating applications. From basic alkyds to acrylics, aminos, polyesters, polyamides and many

Company Name: Carst & Walker Stand Number: D05 / D06 Contact Number: 011-489-3600 Carst & Walker (South Africa) has established itself as a significant distributor of niche application raw materials as well as offering technical support for these growing sectors,

more. Key focus on industrial coatings will be on saturated polyesters for coil and can, and on decorative coatings for more green and sustainable chemistry. Synthetic Polymers develop and produce locally, it is a proudly South African company, with new and innovative products for the decorative and industrial markets. Manufacturing is its inherent strength and constantly upgrading plant and equipment to ensure efficient and safe operations on various product processes. Its goal and focus are to supply the coatings industry with quality products at competitive

providing: Acrylic and modified acrylics, hydrocarbon resins, natural / SIS / SBR / SBS / NBR rubbers, polyamide resins, polychloroprene rubber, polyvinyl alcohol, PUDs, rosin and rosin esters, vinyl chloride resins, graphene dispersions, security / thermographic / thermochromic and fluorescent pigments.

RHINE RUHR

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prices and excellent service levels. The company is proud to be part of this very colourful industry and will endeavour to live up to its tag line – ‘the polymer that creates colour'.

Company name: Lejn Stand number: C09 Contact number: 011-452-0223 Lejn and Fast & Fluid will be presenting its latest Harbil dispenser at this year’s Coatings For Africa Exhibition. The compact HA180 developed with small to medium-sized businesses in mind takes downsizing to the next level; a true Harbil that's more compact without compromising on the canisters, can height and speed. The unique turn lid design and tabletop working height save space and optimize accessibility. Offering the same technology and user-friendliness as the HA480, the HA180 is packed inside a sturdy housing that looks fantastic and fits in practically every paint store. c

technical

Hectorite clay â€“ Unique mineral for manifold applications

Inorganic rheology modifiers based on hectorite and bentonite clays are widely used in the formulation of manifold aqueous and, with specific modification, also for non-aqueous systems to provide excellent stability and anti-sag stability combined with efficient lowshear viscosity build as well as thixotropic flow characteristic.

lay minerals are abundant in nature and are essentially composed of some of the most common elements found in the Earthâ€™s crust. Clay minerals are crystalline, layered hydrous aluminium or magnesium silicates and therefore have twodimensional building blocks. Hence, a clay layer is a platelet of nanoscopic thickness, which stacks to form a three-dimensional solid material. Clays can be classified based upon the composition of the individual clay platelet, which typically contains either one or two silicate sheets condensed on a (central) magnesium or aluminium hydroxide sheet. The group of 2:1 clay platelet, to which smectite clays such as Hectorite and Bentonite belong to, contain two silica sheets and one central magnesium hydroxide or aluminium hydroxide sheet. Smectite clays experience charge deficiency occurring in the crystalline structure when a number of metal cations take up positions that are normally occupied by cations of higher valency.

Figure 1

These so called isomorphous substitutions leave a net negative charge on the clay platelet which is neutralised with exchangeable

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cations positioned on the surfaces of the clay platelets. Figure 2 provides an overview on the mineral structure of smectite clays.

technical Figure 2

Hectorite clay is a natural occurring clay that belongs to the group of smectite clay. It is obtained when some magnesium cations are substituted by lithium in the clay layer structure. The negative charge on the platelet resides within the central octahedral sheet of the clay structure and is countered by exchangeable sodium to maintain magnetic neutrality. Additionally, to differences in the composition of the clay compared to other members of

the smectite group, size and shape of the individual platelets play a major role in its performance. The size of Hectorite is approximately 10 times smaller than Bentonite. As the thickening effect is driven by the edge length of the platelets, the resulting longer edge length of the hectorite offers a major benefit after activation. Hectorite clay can be activated by delamination of the platelets driven by swelling in pure water with high

Figure 3

Due to the longer edge length of hectorite in comparison to bentonite, it builds a much higher low shear viscosity when formulated at an equal concentration in water. The thixotropic effect is also significantly stronger. Hectorite however, requires higher shear during delamination due to its smaller particle size.

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shear dispersion. The sodium ions hydrate, pushing the platelets apart and the clay swells. The high shear forces during dispersion cause the platelets to move away from each other as colloidal, slightly charged particles. After removal of shear, double-layer effects, van der Waals forces of attraction and electrostatic repulsion result in the flocculation edge-toedge, which is visible as the desired viscosity is formed.

technical Figure 4

Hectorite clays are being formulated in various systems. Besides the mentioned application in the market segment of paints and coatings, hectorite clays find use in ceramics laundry, cosmetics, medicine, pottery, porcelain etc. A further famous application is water treatment due to the strong adsorption power of the platelet surfaces.

In addition, the platelet surfaces can be modified in a reaction with quaternary ammonium compounds converting the clay into a hydrophobic form that is used for solvent-borne systems – an organoclay. Depending on the type of quaternary ammonium species used, products can be designed

for all different polarities and chemistries of solvents. Hectorite based organoclays dominate in performance in comparison to similar Bentonite based grades. These products are commercially available under the registered BENTONE® and BENAQUA® name and are considered as industry benchmarks. c

Figure 5

Aqueous application

Non-aqueous applications

BENTONE ® EW

BENTONE® 38

BENTONE® LT

BENTONE® 27

BENTONE® HC

BENTONE® SD-3

Clay minerals are crystalline, layered hydrous aluminium or magnesium silicates and therefore have twodimensional building blocks. Hence, a clay layer is a platelet of nanoscopic thickness, which stacks to form a three-dimensional solid material.

BENTONE® DE BENAQUA® 4000 For more information, contact Carst & Walker Tel: 011-489-3600 | Email: info@carst.co.za | Web: www.carst.co.za

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Coatings SA March