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:
Jan. 23, 1990
Filed:
Apr. 28, 1989
Applicant:
Inventor:
Matthew E Langer, Guilderland, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556439 ;
Abstract
A method is provided for making carboxy aryl terminated organosiloxanes, such as 1,1,3,3-tetramethyl-1-3-disiloxane diyl) bis(benzoic acid) by heating a mixture of an aqueous organic solvent and the corresponding haloacyl aryl terminated organosiloxane. The carboxy aryl terminated organolsiloxanes of the present invention can be used to make silicone polyester block copolymers and silicone polycarbonate block copolymers where the silicone block is joined to the organic block by an ester linkage.