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:
May. 27, 1997
Filed:
May. 10, 1995
Applicant:
Inventors:
Burkhard K ohler, Krefeld, DE;
Wolfgang Ebert, Krefeld, DE;
Klaus Horn, Dormagen, DE;
Walter Sch afer, Leichlingen, DE;
J urgen Kirsch, Leverkusen, DE;
Rolf Dhein, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528219 ; 528 86 ; 528176 ; 528196 ; 528271 ; 528272 ; 5282953 ;
Abstract
The present invention relates to the use of special monocarboxylic acids as chain terminators for the preparation of polycarbonates and of polyester carbonates, and to the polycarbonates and polyester carbonates obtainable according to the invention.