Patent ID: 6087523
Filing Date: 2000-07-11
Classification: C07F

Abstract:
A hydrosilation process comprising:(A) contacting a silicon hydride described by formula R.sup.1.sub.a H.sub.b SiX.sub.4-a-b where each R.sup.1 is independently selected from the group consisting of alkyls comprising one to about 20 carbon atoms, cycloalkyls comprising about four to 12 carbon atoms, and aryls; each X is a halogen; a=0 to 3, b=1 to 3, and a+b=1 to 4; and(B) an unsaturated reactant selected from the group consisting of(i) substituted and unsubstituted unsaturated hydrocarbon compounds,(ii) silicon compounds comprising substituted or unsubstituted unsaturated hydrocarbon substituents, and(iii) mixtures of (i) and (ii);in the presence of a hydrosilation catalyst comprising about 0.1 to 15 weight percent platinum catalyst supported on porous aluminum oxide having an acidity of pH 2 to 7.