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:
Nov. 26, 2013
Filed:
Apr. 03, 2007
Hans-juergen Reese, Damme, DE;
Imbridt Murrar, Senftenberg, DE;
Ralf Fritz, Bissendorf-Schledehausen, DE;
Andres Cabrera, Osnabrueck, DE;
Birgit Magg, Damme, DE;
Hans-Juergen Reese, Damme, DE;
Imbridt Murrar, Senftenberg, DE;
Ralf Fritz, Bissendorf-Schledehausen, DE;
Andres Cabrera, Osnabrueck, DE;
Birgit Magg, Damme, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a process for the preparation of polyurethanes by reacting polyisocyanates a) with compounds having at least two hydrogen atoms reactive with isocyanate groups b), wherein a polyisocyanate a) used is at least one polyisocyanate ai) having an average functionality of greater than 2, a content of diisocyanates of not more than 2% by weight and a content of uretonimines of not more than 4% by weight, based in each case on the weight of the polyisocyanate ai).