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. 09, 1990
Filed:
Oct. 22, 1987
Applicant:
Inventors:
Daniel A Abramowicz, Ballston Spa, NY (US);
Charles R Keese, Schoharie, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P / ; C08G / ;
U.S. Cl.
CPC ...
435132 ; 528196 ;
Abstract
Enzyme-catalyzed exchange reactions with diphenyl carbonate compounds are disclosed. Nucleophiles participating in these reactions include water and a wide range of hydroxy-containing compounds. Polycarbonate products can be prepared according to this invention by the use of various bisphenols in a transesterification reaction with the diphenyl carbonate compound.