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. 11, 1996
Filed:
Mar. 01, 1995
Applicant:
Inventors:
Wolfgang Ebert, Krefeld, DE;
Burkhard Kohler, Krefeld, DE;
Klaus Horn, Dormagen, DE;
Richard Weider, Leverkusen, DE;
Thomas Scholl, Bergisch Gladbach, DE;
Rolf Dhein, Krefeld, DE;
Jurgen Kirsch, Leverkusen, DE;
Rolf Wehrmann, Krefeld, DE;
Assignee:
Bayer AG, Leverkusen, US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
525146 ; 525 90 ; 525 / ; 525148 ; 528128 ; 528196 ;
Abstract
The present invention provides polycarbonates with aliphatic ketocarboxyl end groups, optionally mixed with known aromatic polycarbonates, and a process for their preparation, the chain terminators used being those of formula (I): ##STR1## The present invention also provides mixtures of the polycarbonates or polycarbonate mixtures with reactionless polyisobutylenes.