One component polysiloxane coating compositions and related coated substrates

摘要

Disclosed are one-component low temperature, moisture curable, storage stable coating compositions that include a silanol-functional silicone; an alkoxy-functional silicone; a flexibilizer comprising a reaction product of two or more reactants; and a curing agent selected from amines, aminosilanes, ketimines, aldimines, and combinations thereof. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and methods for coating substrates with such compositions.

主权项

1. A coating composition comprising:
(a) a silanol-functional silicone having a weight average molecular weight in the range of from 200 to 7,000; (b) an alkoxy-functional silicone having a weight average molecular weight in the range of from 800 to 2,500; (c) a flexibilizer comprising a reaction product of reactants comprising a hydroxyl functional resin and an isocyanate-functional silane; (d) a curing agent; and (e) an organo tin material comprising a dilaurate and/or a diacetate to accelerate cure of the composition at ambient temperature, wherein the composition is a one-component, storage stable composition.