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:
Jun. 29, 1993
Filed:
May. 03, 1990
Applicant:
Inventors:
Toshihiko Higuchi, Yokohama, JP;
Shigeyuki Kozawa, Yokohama, JP;
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525404 ; 526120 ;
Abstract
A process for producing an unsaturated group-terminated polyalkylene oxide, which comprises subjecting a monoepoxide having at least 3 carbon atoms to ringopening addition polymerization to an initiator in the presence of a double metal cyanide complex catalyst, followed by converting terminal hydroxyl groups of the resulting hydroxyl group terminated polyalkylene oxide to unsaturated groups.