Process for making si-h functional siloxane oligomer

Details Process for making si-h functional siloxane oligomer Process for making si-h functional siloxane oligomer

C - Chemistry, Metallurgy

07

F

C07F 7/08 (2006.01) C08G 77/04 (2006.01)

Patent

CA 2604972

The present invention relates to a method of making a Si-H functional siloxane oligomer from the reaction between silicon hydride compounds and cyclic siloxane oligomer in the presence of a Lewis acid that is capable of interacting with the hydrogen of the silicon hydride to promote ring opening of the cyclic siloxane oligomer and the insertion a siloxane oligomer segment between Si and H atom to thereby form the Si-H functional siloxane oligomer.

L'invention concerne un procédé de fabrication d'un oligomère de siloxane à fonctionnalité Si-H, obtenu par la mise en réaction de composés d'hydrure de silicium et d'un oligomère de siloxane cyclique, en présence d'un acide de Lewis pouvant interagir avec l'hydrogène de l'hydrure de silicium de manière à activer l'ouverture des cycles de l'oligomère de siloxane cyclique et l'insertion d'un segment d'oligomère de siloxane entre les atomes Si et H, afin de former l'oligomère de siloxane à fonctionnalité Si-H.

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