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:
Mar. 12, 2002
Filed:
May. 17, 2000
Applicant:
Inventors:
Wolfgang Kaufhold, Köln, DE;
Wolfgang Bräuer, Leverkusen, DE;
Ulrich Liesenfelder, Bergisch Gladbach, DE;
Herbert Heidingsfeld, Frechen, DE;
Wolfgang Röhrig, Bergisch Gladbach, DE;
Hans-Georg Hoppe, Leichlingen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/844 ; B29C 4/738 ;
U.S. Cl.
CPC ...
C08G 1/844 ; B29C 4/738 ;
Abstract
A process for the continuous preparation of melt processable polyurethane elastomers having improved softening behavior is disclosed. The process entails reacting a polyisocyanate, a polyol and a chain extender, which have a temperature of at least 170° C., in a static mixer, wherein the reaction mixture is prepared. The reaction mixture is then metered into an extruder into which optional auxiliaries and/or further components are fed.