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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.:

US 8980422 B1

PDFFull Text
Date of Patent:
Mar. 17, 2015

Filed:

Nov. 09, 2010

Polyurethane/polyisocyanurate foam having improved adhesion properties

Applicants:

Rolf Roers, Odenthal, DE;

Torsten Heinemann, Leichlingen, DE;

Maria Dolors Mateu, Tarragona, ES;

Inventors:

Rolf Roers, Odenthal, DE;

Torsten Heinemann, Leichlingen, DE;

Maria Dolors Mateu, Tarragona, ES;

Assignee:

Bayer MaterialScience AG, , DE;

Attorney:

Drinker Biddle & Reath LLP

Primary Examiner:

Randy Gulakowski

Assistant Examiner:

Jeffrey Washville

Int. Cl.
CPC ...
B32B 15/095 (2006.01); B32B 5/20 (2006.01); C09D 175/08 (2006.01); C08G 18/18 (2006.01); B32B 5/18 (2006.01); B32B 15/08 (2006.01); B32B 27/40 (2006.01); C08G 18/09 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08J 9/14 (2006.01); C08G 101/00 (2006.01);
U.S. Cl.
CPC ...
C08G 18/1816 (2013.01); B32B 5/18 (2013.01); B32B 15/08 (2013.01); B32B 27/40 (2013.01); C08G 18/092 (2013.01); C08G 18/4018 (2013.01); C08G 18/4211 (2013.01); C08G 18/4829 (2013.01); C08G 18/4833 (2013.01); C08J 9/141 (2013.01); C08G 2101/005 (2013.01); C08G 2105/02 (2013.01); C08J 2375/06 (2013.01); C08J 2375/08 (2013.01);
Abstract

A polyurethane/polyisocyanurate foam is obtainable from the reaction of A) a polyol component comprising A1) an aromatic polyester polyol, A2) a polyether polyol started on a carbohydrate polyol and A3) a polyether polyol started on ethylene glycol, wherein the total hydroxyl number of the polyol component A) is from ≧150 mg KOH/g to ≦300 mg KOH/g; with B) a polyisocyanate component, wherein the equivalent ratio of NCO groups to the sum of the hydrogen atoms reactive towards NCO groups is from ≧110:100 to ≦200:100. This foam has improved adhesion properties to facings and is suitable for the production of composite elements without requiring the use of an additional adhesion promoter.

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