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. 15, 2015
Filed:
Sep. 26, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Lionel Gehringer, Schaffhouse-pres-Seltz, FR;
Veronika Wloka, Mannheim, DE;
Ulrich Mueller, Neustadt, DE;
Marine Boudou, Mannheim, DE;
Ulrike Mahn, Mannheim, DE;
Elke Guetlich-Hauk, Lambsheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/08 (2006.01); C08G 18/42 (2006.01); C08G 63/06 (2006.01); C08G 63/12 (2006.01); C08G 63/82 (2006.01); C08G 63/87 (2006.01); B01J 29/89 (2006.01);
U.S. Cl.
CPC ...
C07C 67/08 (2013.01); B01J 29/89 (2013.01); C08G 18/4238 (2013.01); C08G 63/06 (2013.01); C08G 63/12 (2013.01); C08G 63/823 (2013.01); C08G 63/87 (2013.01);
Abstract
The invention relates to a process for preparing polyester alcohols by catalytic reaction of at least one at least polyfunctional carboxylic acid with at least one polyfunctional alcohol and/or by catalytic ring-opening polymerization of cyclic esters in the presence of catalysts, wherein a zeolite is used as catalyst.