PAINT & COATING SYSTEMS
JOTUN BOOTh NO.
01.270
f ormance Delivered
METS 2017
Some References
seawater, the silyl ester group reacts in a very controlled way, as the level of hydroxyl ions is constant in the world’s oceans making it easy to predict the exact reaction rate. the covalent bond being disrupted in the silyl ester is much stronger than the ionic bonds in the ion exchange technologies under seawater exposure. it is possible to fine-tune and tailor the coating specification to suit a specific yachts’ requirements using: voyage factor, average speed and average water temperature.
Hydractive Technology to minimise the formation of leached layer affecting the coatings antifouling property, it is critical to control the coating’s water uptake. unfortunately, soluble pigments that do not remain in the leached layer usually attract water and thereby result in an increased leached layer, whereas insoluble particles that repel water tend to remain in the leached layer contributing to an increased thickness. to overcome this challenge, Jotun has coated soluble pigment particles with a molecular layer to change the
www.s u p e r y a c h t - i n dustr y.c om
Jotun.indd 57
my ulysses
my alfa nero
my carinthia Vii
sy Vertigo
my al mirqab
my limitless
my cloud 9
sy tenacious
my al said
my titan
sy a
sy hetairos
my radiant
my octopus
sy m5
my stargate
particle’s properties. the coated particles are changed to become hydrophobic (water repellent) instead of hydrophilic (water attracting) preventing water ingress into the coating and reducing the formation of leached layer. When the predetermined amount of seawater has penetrated the antifouling’s surface layer, the particle’s coating reacts with the hydroxyl ions (hydractive) separating the coating from the soluble particle, allowing the remainder of the particle to dissolve. this provides a controlled release of biocide, protecting the hull from fouling with predictable performance. using the hydractive technology, combines a) a reduced leached layer, which improves the efficiency of the antifouling coating, and b) an improved and predictable biocide release which protects against fouling. With the hydractive technology, Jotun has taken a further step towards the ultimate fouling protection. dr erik risberg, global marketing director of Jotun marine coatings, comments: “We are proud of Jotun’s research team’s achievements with the development of the hydractive
technology; the team have proven it possible to take silyl acrylate technology to yet another level. the combination of these technologies allows a unique level of protection for superyachts, with a tailor-made specification to suit the vessel’s specific parameters. this is a huge step towards increased efficiency of superyachts through an outstanding fouling protection with both a financial and environmental impact.”
i. www.jotun.com
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