Can waterborne technology succeed in thick road marking application

Dow Coating Materials

DURATRACK™ WH-155 TECHNOLOGY Can a water-borne technology succeed in thick road marking application?

Xavier BRICOUT EMEAI Marketing Manager Dow Coating Materials

Source: Dow 2022

INTERTRAFFIC 2022

DRIVERS IN ROAD MARKINGS

Authorities and customers demand safe visible, durable, and sustainable roads

Estimated European market size (Volume) Safety

Cold plastic

Paint

Urbanization 10%

Sustainability

Source: Dow 2022

2015

Autonomous vehicle

2025 Thermo plastic

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

2

COLD PLASTIC FEATURES

•

System is designed for durability which resulted in severe compromises on the EHS footprint.

•

Resin has a persistant very stong odor causing discomfort for the applicators.

•

Cleaning and waste disposal require specific treatment (solvent).

•

Cold plastic is growing steadily to meet the increasing demand for durability (14% growth in France in 2021).

Hardener (peroxide) manually added

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

3

Source: Dow 2022

Current available two component solutions for high wear and tear resistance:

Introducing DURATRACK™ WH-155 Technology

®™ Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow.

SIMILAR… BUT DIFFERENT

Alternative to 2K cold plastic (MMA) with 2K water-borne solution

Current technology

Innovative, water-borne alternative

BPO

Cold Plastic Manual

MMA is designed for use in conditions where resistance to wear and tear are of great importance BUT 2k MMA has a • Poor environment • Poor health • Poor safety footprint

• Very persistent odor

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

DURATRACK™ WH-155

Water-borne cold plastic

Manual

DURATRACK™ WH-155 Technology is an innovative mineral/organic hybrid binder which will consume water within after activation allowing for high tickness waterborne marking (1-3+ mm) • • • •

Highly durable Safer for workers, No persistent odor Easy to apply

• Sustainable * • Easy logistics and storage • Cleaning with water

5

Source: Dow 2022

MMA Resin

Activator

HYBRID TECHNOLOGY PRINCIPLES Water evaporation

High thickness and water-borne

2 – 4 mm

Current Waterborne Technology

Water entrapped due to top film formation • Quick skin formation: not workable • Cracking • Very long drying time (days) • High impact of weather conditions • Heterogeneous structure (gradient) • Softness

Poor performances

2K water-borne cold plastic High thickness and water-borne -

DURATRACK™ WH-155 Technology

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

Water evaporation

+ Water consumption

Water partly consumed, partly evaporated • Open time : good workability • No Cracking • Short drying time (min) • Moderate impact of weather conditions • Homogeneous structure • Hardness

Excellent performances

6

Source: Dow 2022

Challenge

REFERENCE 2K MMA COLD PLASTIC

Sigmoidal hardening curve: long open time, fast hardening high ability to absorb mechanical stresses over a wide T range

Wet taber: 2x1000g – CS10 – 500 cycles Dry Taber: 2x500g – H22– 1500 cycles

Drying time

28 Open time

12

10000 1,59

1000 100 10

Drying time (hours) 0

50

100

150

200

0,06 Wet

1 Dry

-40

80 40 120 0 Temperature (C)

BK Drying Time (min)

Hardness development (Sh.D)

Taber abrasion test (g)

DMA (3 points bending mode)

2mm WFT – Drying @RT

2mm WFT – Drying @RT

2mm WFT – Drying 7 days @RT

2mm WFT – Drying 28 days @RT

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7

Source: Dow 2022

28

50 45 40 35 30 25 20 15 10 5 0

E’ (Mpa)

No Mark on top film

2K MMA COLD PLASTIC

Similar application, close hardening curve, better temperature stability, higher stiffness (E’ storage modulus), heat dissipation (E”)

DURATRACK™ WH-155 Technology

Wet taber: 2x1000g – CS10 – 500 cycles Dry Taber: 2x500g – H22– 1500 cycles

No Mark on top film

36 28 Open time

27 12

10000

1,59

1000 100

0,52 0,33

0,06

1

Drying time (hours) 0

50

100

150

200

Wet

10

Dry

-40

80 40 120 0 Temperature (C)

BK Drying Time (min)

Hardness development (Sh.D)

Taber abrasion test (g)

DMA (3 points bending mode)

2mm WFT – Drying @RT

2mm WFT – Drying @RT

2mm WFT – Drying 7 days @RT

2mm WFT – Drying 28 days @RT

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

8

Source: Dow 2022

Drying time

50 45 40 35 30 25 20 15 10 5 0

E’ (Mpa)

48 28

Composition

Impact

2K MMA

DURATRACK™WH-155

Binders

Tg, open time, drying time, …

~ 25% (BA/MMA + Acrylic resin)

~ 40% (acrylic hybrid binder)

Additives

Compaction, drying time, rheology, cracks, retroreflection, color

~ 3%

~ 1%

Fillers / extenders

Rheology, drying time, possible wet Taber results

~ 70% (mainly SiO2)

48% (mainly SiO2)

Pigments

Whiteness, Retroreflection, UV resistance

6 – 10%

0 - 1%

Activator

Workability, drying time

2% (BPO)

3% (Li2SO4 + NaOH)

Solid level

Workability, self-levelling, drying time, cracks

100%

~ 82%

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DOW CONFIDENTIAL - Do not share without permission

9

Source: Dow 2022

COMPARISION WITH INCUMBENT TECHNOLOGY (2K MMA)

UTELLE SITE RESULTS

FIELD TRIALS FIELDUTELLE TRIALS SITE UTELLE SITE

Dow Coating Materials

OUR ROAD TRIAL SITE IN EUROPE: UTELLE South of France ~ 5000 vehicles per day (10% truck) 30

120

25

100

20

80

15

60

10

40

5

20

0

0

®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

jul aug sep oct nov dec

Source: Dow 2022

jan fev mar apr may jun

1 year exposure ~ 900 000 vehicles, 1.8M wheel hits

RAINFALL (mm)

TEMPERATURE (C)

Average climatic conditions

Utelle Site unique features: • Winter climate (close to ski resorts) • Summer climate (Southeast France) • Heavy traffic all year (cars/trucks)

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DURATRACK™ WH-155 Technology Field trials

More than 4 years under traffic: RL > 200 mCd/lx/m² - Qd > 150 mCd/lx/m² with 2.4% TiO2 Qd > 150 with 0% TiO2

Serie 148 - RL/QD

6,0

300

250

5,0

200

4,0

150

3,0

Qd

8,0 7,0

6,0

250

5,0 200 4,0 150

3,0

1 year

2 years

3 years

4 years

1st gen, 48% binder, 2.4% TiO2 ~4.4 kg/m² Echostar 25WBP SRT ®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

100

2,0

mrt-17 jun-17 sep-17 dec-17 mrt-18 jun-18 sep-18 dec-18 mrt-19 jun-19 sep-19 dec-19 mrt-20 jun-20 sep-20 dec-20 mrt-21 jun-21 sep-21 dec-21 apr-22

apr-22

dec-21

jun-21

sep-21

mrt-21

dec-20

jun-20

sep-20

mrt-20

dec-19

0,0

jun-19

0

sep-19

0,0 mrt-19

0 dec-18

1,0

jun-18

50

sep-18

1,0

mrt-18

50

dec-17

2,0

jun-17

100

sep-17

RL/QD (mCd/lx/m²)

350

9,0

1 year

2 years

3 years

Source: Dow 2022

RL Av

300

7,0

Serie 146 - QD

Wheel hits (M)

350

400

LUMINANCE (mCd/lx/m²)

4 years 6.9 M

8,0

Wheel hits (M)

400

4 years

1st gen, 48% binder, 0% TiO2 ~4.4 kg/m² No drop-on 12

DURATRACK™WH-155: Impact of TiO2 on Retroreflexion CONCLUSIONS

IMPACT OF TiO2 CONTENT - DURATRACK 47% binder - 4.4kg/m² - Echostar 25 WBP SRT Series 148#Z2 / 150#5 / 146#X1

400

•

Even with No TiO2 (and no alternative pigment), RL is above 100 mCd/lx/m² up to 4 years

•

TiO2 amount (between 0.98 and 2.4%) has no visible impact on retroreflexion

•

Excellent Glass Bead Retention even after 46 months exposure under traffic (~ 6.5 Millions wheels hits)

300

2.4% TiO2 250

0.98% TiO2

200 150 100

0% TiO2 50

Source: Dow 2022

RETROREFLEXION (mCd/lx/m²)

350

0 0

10

20

30

40

50

60

EXPOSURE TIME (Month) * 148#Z2 contains also 4.1% premix Glass beads - 150#5 and 146#X1 does not have premix - ALL these formulations do NOT contain any other white pigment

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Footnote

13

NEW REGULATIONS IN EUROPE TiO2 Labelling

MMA Labelling

ECHA

ECHA

Chemical name

EC No

‘022-006002

Titanium dioxide; (in powder form containing 1% or more of particles with aerodynamic diameters ≤10 um

236-675-5

CAS No

1346367-7

Hazard class and category code(s) Carc. 2

EUNOMIA

Labelling

Hazard statement code(s)

Pictogram signal word code(s)

Hazard statement code(s)

H351 (inhalation)

GH508 Wng

H351 (inhalation)

Suppl. hazard statement code(s)

As of 1 October 2021, following Delegated Regulation (EU) 2020/2017, new classification and labeling requirements enter into force: • Product containing 1% or more of TiO2 in powder form, particle size <10µm • Labeling H351 (inhalation) GHS08 ®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

proposed to classify methyl methacrylate (MMA) as Resp. Sens. 1; H334 + GHS08

Source: Dow 2022

Classification Index No.

Microplastics

Low quality road marking can potentially generate more secondary microplastics (topic under investigation)

14

Conclusion

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CAN A WATER-BORNE TECHNOLOGY SUCCEED

5 4 3

Low traffic disturbance

Low application cost

2 1 0

Ecological WH-155

High durability TH

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CP

Material preparation 5 4

3

Low equipment investment

2

Application

1

Source: Dow 2022

Low life cycle cost

Applicator view

Road authority view

in thick road marking application?

0

Low application cost

Safety of workers WH-155

TH

CP

16

Thank you

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