The Waterborne Symposium 2025

Abstract

Silicone materials are increasingly valued in the paint and coatings industry because of their advantageous properties of high temperature stability, moisture resistance coupled with breathability, and superior resistance to weathering. Although traditionally processed in volatile organic solvents, sustainability commitments and customer demand are driving a transition to waterborne approaches. At present, waterborne silicone-containing binders are still uncommon because they are notoriously difficult to prepare. We recently presented the development of a novel waterborne silicone-organo copolymer binder for industrial coatings. These copolymer dispersions have nearly zero VOC. When used in conjunction with a curing agent, they provide durable crosslinked film coatings on metal surfaces, with excellent hardness, solvent resistance and weatherability. They are excellent binders for a variety of organic and inorganic pigments. Here we discuss their outstanding stability to extended accelerated weathering conditions when used in conjunction with pigments