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. 11, 2015
Filed:
Sep. 04, 2007
Applicant:
Jürgen Münter, Fellbach, DE;
Inventor:
Jürgen Münter, Fellbach, DE;
Assignee:
STAHL INTERNATIONAL BV, Waalwijk, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/00 (2006.01); C08G 18/32 (2006.01); C08G 18/08 (2006.01); C08G 18/12 (2006.01); C08G 18/28 (2006.01); C08G 18/38 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/44 (2006.01); C08G 18/66 (2006.01); C08G 18/72 (2006.01); C09D 175/04 (2006.01);
U.S. Cl.
CPC ...
C08G 18/3231 (2013.01); C08G 18/0823 (2013.01); C08G 18/0857 (2013.01); C08G 18/0866 (2013.01); C08G 18/12 (2013.01); C08G 18/283 (2013.01); C08G 18/3834 (2013.01); C08G 18/4018 (2013.01); C08G 18/4277 (2013.01); C08G 18/44 (2013.01); C08G 18/6659 (2013.01); C08G 18/722 (2013.01); C09D 175/04 (2013.01);
Abstract
The present invention pertains to aqueous polyurethane-polyurea dispersions which are prepared by the acetone process using methyl acetate instead of ketones and are chain-extended using hydrazine or derivatives thereof, these dispersions having an improved stability towards thermal yellowing and a relatively low residual hydrazine/hydrazine derivative content.