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. 03, 2007
Filed:
Nov. 12, 2004
Bernhard Gruenewaelder, Hilden, DE;
Werner Haller, Erkrath, DE;
Birgit Ness, Langenfeld, DE;
Thomas Empt, Viersen, DE;
Bernhard Gruenewaelder, Hilden, DE;
Werner Haller, Erkrath, DE;
Birgit Ness, Langenfeld, DE;
Thomas Empt, Viersen, DE;
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Abstract
A polyurethane prepolymer obtainable by reacting at least one aromatic polyisocyanate having symmetrical substitution of NCO groups and at least one aromatic polyisocyanate having asymmetric substitution of NCO groups, the fraction of aromatic polyisocyanate having symmetrical substitution of NCO groups being higher than the fraction of polyisocyanate having asymmetric substitution of NCO groups, and at least one polyol having an OH functionality of more than 2.5 and at least one polyol having an OH functionality of less than 2.5.