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. 22, 2005
Filed:
Sep. 09, 2003
Karlheinz Haubennestel, Wesel, DE;
Stefan Moessmer, Mettmann, DE;
Sascha Huebers, Wesel, DE;
Baerbel Gertzen, Emmerich, DE;
Holger Heilmann, Wesel, DE;
Karlheinz Haubennestel, Wesel, DE;
Stefan Moessmer, Mettmann, DE;
Sascha Huebers, Wesel, DE;
Baerbel Gertzen, Emmerich, DE;
Holger Heilmann, Wesel, DE;
BYK-Chemie GmbH, Wessel, DE;
Abstract
The invention relates to a polymeric urea-urethane obtainable by first reacting a diisocyanate with a polyol to form a doubly NCO-terminated urethane prepolymer. Further reaction is subsequently carried out with a mixture of a primary monoamine and a primary diamine. After the second reaction the polymeric urea-urethane present is substantially free of isocyanate and of the monoamine and diamine used. It can be used as an agent for controlling the rheology of liquid polymers or polymer solutions.