SYNTHESIS OF ELASTOMERIC CARBORANE-SILOXANES BY HYDROSILATION REACTIONS

摘要

A carborane-siloxane compound is provided having the repeat unit (1) or (A). Q contains any of (B) carboranyl, and U'. Each R and R' is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, or mixtures thereof. Each U' is derivable from hydrosilation of an alkenyl or alkynyl group. Each T is alkyl, aryl, alkylaryl, haloalkyl, haloaryl, mixtures thereof, -(O-SiR'<SUB>2</SUB>)<SUB>x</SUB>H, or the repeat unit. Each x and x' is a positive integer. The compounds may be made be reacting a carborane-siloxane precursor having unsaturated end groups with a siloxane crosslinker in the presence of a hydrosilation catalyst.