The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2002
Filed:
Dec. 09, 1999
Applicant:
Inventors:
Assignee:
Dow Corning Limited, Barry, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 7/708 ;
U.S. Cl.
CPC ...
C08G 7/708 ;
Abstract
A polymerization process comprising mixing a siloxane having silicon-bonded groups R′ and a cyclic or linear siloxane having no silicon-bonded groups R′ with a phosphazene base catalyst in the presence of water and allowing the siloxane having silicon-bonded groups R′ to condense and the cyclic or linear siloxane having no silicon-bonded R′ groups to polymerize by equilibration.