Novel poly(siloxane-acrylate) elastomers with oxycarbonylethyleneimino-containing organic groups and method of making the same

摘要

Poly(siloxane-acrylate) elastomers with low weep characteristics are formed by the steps of:(A) forming an amine functional alkenyl-containing siloxane by mixing and heating:(a) a polydiorganosiloxane,(b) an amino-functional silane hydrolyzate,(c) an alkenylorganosiloxane, and(d) a base equilibration catalyst, then(B) reacting, at room temperature, the amine functional alkenyl-containing siloxane with an acrylate to form a curable alkenyl-containing poly(siloxane-acrylate) with oxycarbonylethyleneimino-containing organic groups, and(C) curing the alkenyl-containing poly(siloxane-acrylate) to form an poly(siloxane-acrylate) elastomer.