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. 24, 2002
Filed:
Aug. 10, 2000
Applicant:
Inventors:
Miroslav Marek, Prague, CZ;
Friedrich-Karl Bruder, Krefeld, DE;
Konstadinos Douzinas, Köln, DE;
Assignee:
Bayer Aktiengesellshaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 7/700 ;
U.S. Cl.
CPC ...
C08L 7/700 ;
Abstract
A branched polyamide and a process for its preparation are disclosed. Aliphatic or aromatic esters of carbonic acid are used as branching agents in an optionally catalyzed reaction with crystalline polyamide to produce resins having good flow properties, high degree of crystallinity and excellent mechanical properties. Amorphous polyamides that are branched in accordance with the inventive process have improved flow properties.