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Coatings Ingredients
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Coatings Ingredients
Product News

Evonik’s Modified Silica Reduces Biocide Content in Anti-fouling Coatings

Published on 2021-01-18. Edited By : SpecialChem

TAGS:  Marine and Protective Coatings    

ANTIFOULING-additives Evonik offers AEROSIL® VP 4200, a new structure modified silica type with free OH-groups that enables formulating more ecofriendly, cuprous oxide containing anti-fouling coatings.

More Controlled Release of Biocide

AEROSIL® VP 4200 forms a complex with Cu2O and is thus better able to control the release of the biocide.

Formulations with only 10 pbw% cuprous oxide and 4 -6 pbw% AEROSIL® VP 4200 leads to the same performance as the standard type with up to 50 pbw% Cu2O.

AEROSIL® VP 4200 has a relatively low thickening effect, so higher amounts can easily be incorporated into the systems, especially in combination with TEGO® Dispers 1010. It is tailor made for both CDP and SPC coatings. (CDP = Controlled Depletion Polymer; SPC = Self-Polishing Coating). AEROSIL® VP 4200 belongs to Evonik’s product line of silica-based AEROSIL® types.

Evonik is one of the world leaders in specialty chemicals. The company is active in more than 100 countries around the world and generated sales of €13.1 billion and an operating profit (adjusted EBITDA) of €2.15 billion in 2019. Evonik goes far beyond chemistry to create innovative, profitable and sustainable solutions for customers.

Source: Evonik
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