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:
May. 02, 2017
Filed:
Apr. 12, 2004
Michael Krebs, Hilden, DE;
Katja Brosa, Neuss, DE;
Andreas Brenger, Düsseldorf, DE;
Uwe Franken, Dormagen, DE;
Christoph Lohr, Mettmann, DE;
Michael Krebs, Hilden, DE;
Katja Brosa, Neuss, DE;
Andreas Brenger, Düsseldorf, DE;
Uwe Franken, Dormagen, DE;
Christoph Lohr, Mettmann, DE;
Henkel AG & Co. KGaA, Duesseldorf, DE;
Abstract
The present invention describes reaction products from 2,4'-diphenylmethane diisocyanate with a content of at least 95 wt. % of 2,4′ isomer with at least one polyether-polyol and/or polyalkylene glycol with a molecular weight of less than 1,000 and/or one crystalline or partly crystalline or vitreously amorphous polyester-polyol and optionally polyester-polyols and/or polyether-polyols which are liquid at room temperature and have molecular weights of greater than 1,000 can be converted into adhesive compositions which have a very low content of monomeric diisocyanate of less than 0.5, preferably less than 0.25 wt. %. Such hot melt adhesive compositions have a high melt stability and a low viscosity, in addition to the low content of monomeric diisocyanate.