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:
Aug. 25, 1981
Filed:
Jun. 20, 1980
Applicant:
Inventors:
Bernd Quiring, Leverkusen, DE;
Wolfgang Wenzel, Bergisch Gladbach, DE;
Georg Niederdellmann, Dormagen, DE;
Hans Wagner, Dormagen, DE;
Wilhelm Goyert, Cologne, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
525455 ; 2641 / ; 528 44 ; 528 49 ; 528 69 ; 528 75 ;
Abstract
The present invention relates to a process for the preparation of polyurethane ureas from relatively high molecular weight polyols, diisocyanates, water as chain lengthening agent and optionally short chain glycols in a multishaft extruder equipped with kneading elements.