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:
Dec. 06, 1988
Filed:
Dec. 18, 1987
Applicant:
Inventor:
Hsiang-Ning Sun, Media, PA (US);
Assignee:
Arco Chemical Company, Newtown Square, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528405 ; 528406 ;
Abstract
The catalyst efficiency of zinc carboxylate catalyst in the copolymerization of alkylene oxides with carbon dioxide to form polycarbonates has been increased by the addition of a small amount of certain diepoxides to the reaction.
Sun, Hsiang-Ning. (1988). Reduction of catalyst usage in epoxide/co.sub.2 polymerization (U.S. Patent No. 4789727). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4789727
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile