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:
Apr. 14, 1998
Filed:
Apr. 29, 1997
Applicant:
Inventor:
John S Razzano, Cohoes, NY (US);
Assignee:
General Electric Company, Waterford, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556461 ;
Abstract
A base catalyzed hydrolysis of dialkoxydiphenylsilanes or dialkoxymethylphenylsilanes in a solvent or solvent mixture wherein dialkoxydiphenylsilanes or dialkoxymethylphenylsilanes are soluble but in which octaphenylcyclotetrasiloxane or tetramethyltetraphenyl-cyclotetrasiloxane is sparingly soluble or insoluble provides for a process to prepare octaphenylcyclotetrasiloxane or sym-tetramethyltetraphenyl-cyclotetrasiloxane in high yield.