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:
Nov. 03, 2009
Applicants:
Rolf Roers, Odenthal, DE;
Hartmut Nefzger, Pulheim, DE;
Erika Bauer, Jüchen, DE;
Johannes Van DE Braak, Hennef, DE;
Torsten Heinemann, Leichlingen, DE;
Jürgen Schloβmacher, Bergheim, DE;
Inventors:
Rolf Roers, Odenthal, DE;
Hartmut Nefzger, Pulheim, DE;
Erika Bauer, Jüchen, DE;
Johannes Van De Braak, Hennef, DE;
Torsten Heinemann, Leichlingen, DE;
Jürgen Schloβmacher, Bergheim, DE;
Assignee:
Bayer MaterialScience AG, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/20 (2006.01); C07C 69/54 (2006.01);
U.S. Cl.
CPC ...
Abstract
Polyester polyols are produced from at least one carboxylic acid hydride and diethylene glycol by a process in which the formation of 1,4-dioxane is suppressed. These polyester polyols are useful for producing polyurethane (PUR) and polyisocyanurate (PIR) foams and metal composite elements containing these PUR or PIR foams.