John Dennis Waterman

US Patent:

7456308, Nov 25, 2008

Filed:

Dec 17, 2004

Appl. No.:

10/585154

Inventors:

Binh Thanh Nguyen - Midland MI, US
Curtis John Bedbury - Midland MI, US
Roger Edwin Humburg - Midland MI, US
Susan Mary Jacob - Midland MI, US
Sarah Jane Ratcliff - Midland MI, US
John Dennis Waterman - Coleman MI, US

Assignee:

Dow Corning Corporation - Midland MI

International Classification:

C07F 7/04

US Classification:

556480, 546 14

Abstract:

A Grignard process for preparing phenyl-containing chlorosilane products, in particular diphenylchlorosilanes, is carried out in three embodiments. In the first embodiment, the reactants of the Grignard process are a phenyl Grignard reagent, an ether solvent, a trichlorosilane, and an aromatic hydrocarbon coupling solvent. In the second embodiment, the reactants of the Grignard process are a phenyl Grignard reagent, an ether solvent, a phenylchlorosilane, and an aromatic hydrocarbon coupling solvent. In the third embodiment, the reactants of the Grignard process are a phenyl Grignard reagent, an ether solvent, a trichlorosilane, a phenylchlorosilane, and an aromatic hydrocarbon coupling solvent. In each embodiment, the reactants are present in a particular mole ratio.