Substitution of tin catalyst in antifouling paint

MUDP funded development of silicone antifouling paints without tin-based catalysts.

This report describes methods, results and conclusions from a development project between Hempel A/S, DHI and Danish Technological Institute. The aim of the project was to develop new silicone antifouling paints without the use of tin-based catalysts. The project was supported by the Danish Environmental Protection Agency and carried out in the period 2017-2019.

It was not possible to make a simple 1:1 substitution of the catalyst in this project. It was found necessary to develop a whole new paint system in order to be able to use another type of catalyst or to completely eliminate the need for catalysts.