Patent ID: 11905375
Assignee: DOW SILICONES CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. A method for preparing a polyfunctional organohydrogensiloxane comprising:
1) combining
A) a boron containing Lewis acid;
B) a hydroxyl terminated polydiorganosiloxane of formula, , subscript n is 2 to 2,000, and each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups; and
C) a polyorganohydrogensiloxane of formula, , where each subscript d is independently 0 to 995, and each R is an independently selected monovalent hydrocarbon group, thereby preparing the product, where the product comprises a polyfunctional organohydrogensiloxane and a by-product comprising H2.