Exchange reaction preparation of hydrosilanes

Details Exchange reaction preparation of hydrosilanes Exchange reaction preparation of hydrosilanes

C - Chemistry, Metallurgy

07

F

260/447.5, 260/4

C07F 7/18 (2006.01) C07F 7/08 (2006.01)

Patent

CA 1129432

Abstract of the Disclosure A process for the preparation of a silane of the formula RaSiHb(OR')4-(a+b) wherein R is optionally substituted alkyl, alkenyl or aryl with up to / C atoms, R' is alkyl with 1 to 4 C atoms, a and b each independently is 1, 2 or 3, and a+b is at most 4. comprising reacting an Si-H polysiloxane with a compound of the formula R8S1(OR')4-a in the presence of a conventional redox-stable siloxane polymerization catalyst which favors the exchange reaction. Advantageously the catalyst is A1C13 and R and R' are methyl, ethyl, vinyl or phenyl.

323615

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