METHOD FOR HYDROSILYLATION OF ALIPHATICALLY UNSATURATED ALKOXYS I LAN ES AND HYDROGEN TERMINATED ORGANOSILOXANE OLIGOMERS TO PREPARE ALKOXYSILYL TERMINATED POLYMERS USEFUL FOR FUNCTIONALIZING POLYORGANOSILOXANES USING A COBALT CATALYST

摘要

A method for preparing a product includes combining starting materials including A) a siloxane oligomer having silicon bonded hydrogen atoms, B) an alkoxysilane having at least one aliphatically unsaturated group capable of undergoing hydrosilylation reaction and C) a cobalt catalyst. The method can be used to produce a compound of formula (I). This compound can be used in a hydrosilylation reaction with a vinyl-functional polyorganosiloxane. The resulting product includes an ethyltrimethoxysilyl functional polyorganosiloxane useful in condensation reaction curable sealant compositions.