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:
Apr. 05, 2011
Filed:
Mar. 13, 2006
Pablo Steenwinkel, Waalwijk, NL;
Andreas Jacobus Josine Goos, Waalwijk, NL;
Paulus Johannes Maria Hönen, Waalwijk, NL;
Gerardus Cornelis Overbeek, Waalwijk, NL;
Pablo Steenwinkel, Waalwijk, NL;
Andreas Jacobus Josine Goos, Waalwijk, NL;
Paulus Johannes Maria Hönen, Waalwijk, NL;
Gerardus Cornelis Overbeek, Waalwijk, NL;
DSM IP Assets B.V., Heerlen, NL;
Abstract
An aqueous polyurethane composition comprising a polyurethane which is the reaction product of: (A) an isocyanate-terminated prepolymer and (B) at least one active-hydrogen chain-extending compound comprising at least 0.20 stoichiometric equivalents with respect to the isocyanate content of the isocyanate-terminated prepolymer (A), of an active-hydrogen chain-extending compound selected from the group consisting of hydrazine, hydrazine derivatives and mixtures thereof; and wherein at least 0.2 stoichiometric equivalents of the anionic or potentially anionic water-dispersing groups are neutralised with ammonia.