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. 18, 1997
Filed:
Jan. 29, 1996
Applicant:
Inventors:
Klaus Konig, Odenthal, DE;
Jurgen Schwindt, Leverkusen, DE;
Jan Mazanek, Koln, DE;
Josef Pedain, Koln, DE;
Manfred Dietrich, Leverkusen, DE;
Gerhard Klein, Monheim, DE;
Karl-Roland Jerg, Koln, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
524591 ; 525409 ; 528 76 ; 528 77 ; 528 79 ;
Abstract
The present invention relates to a process for the preparation of polyurethanes suitable for use as thickeners for aqueous compositions by reacting at an NCO/OH equivalent ratio of 0.9:1 to 1.2:1