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. 20, 1993
Filed:
Jan. 15, 1992
Applicant:
Inventors:
Kevin M Snow, Clifton Park, NY (US);
James E Pickett, Schenectady, NY (US);
Larry N Lewis, Scotia, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 25 ; 528 29 ; 528 15 ; 528 19 ;
Abstract
A silicone cyclic, such as hexaorganotrisiloxane is lithiated with an alkyl lithium compound followed by treatment with a diorganohalosilane to produce a polydiorganosiloxane having a terminal diorganohydridesiloxy unit. The platinum catalyzed addition of a 2-alkenyl-6-organophenol results in the production of a phenol-siloxane macromer. Conversion of the phenol-siloxane macromer to a silicone polyphenylene ether graft copolymer is effected by oxidatively coupling the 2,6-diorganophenol to the phenol-siloxane macromer.