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:
Sep. 20, 2011
Filed:
Jul. 01, 2005
Stefan Wershofen, Mönchengladbach, DE;
Manfred Schmidt, Dormagen, DE;
Hans-georg Pirkl, Leverkusen, DE;
Nobuhiro Kamiyama, Hyogo, JP;
Shinichi Murakami, Hyogo, JP;
Tetsuo Harada, Hyogo, JP;
Stefan Wershofen, Mönchengladbach, DE;
Manfred Schmidt, Dormagen, DE;
Hans-Georg Pirkl, Leverkusen, DE;
Nobuhiro Kamiyama, Hyogo, JP;
Shinichi Murakami, Hyogo, JP;
Tetsuo Harada, Hyogo, JP;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
The invention relates to a process for the preparation of liquid, storage-stable isocyanate mixtures which are characterized by a low color number and which contain carbodiimide (CD) and/or uretonimine (UI) groups. This invention also relates to the isocyanate mixtures obtained by this process, to their use for the preparation of blends with further isocyanates, and to the preparation of prepolymers containing isocyanate groups and of polyurethane plastics, preferably polyurethane foams from these isocyanate mixtures.