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:
Aug. 06, 2013
Filed:
Apr. 06, 2009
Applicants:
Klaus Lorenz, Dormagen, DE;
Arnulf Werner, Dormagen, DE;
Marcus Eichmann, Düsseldorf, DE;
Inventors:
Assignee:
Bayer MaterialScience AG, , DE;
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/14 (2006.01); C08G 59/18 (2006.01); C08G 59/20 (2006.01); C08G 59/00 (2006.01); C08G 65/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for the preparation of a polyol which includes reacting an amino-group-containing starter compound with an alkylene oxide in the presence of a catalyst to form a polyol, wherein the catalyst is based on a compound selected from the group consisting of alkali metal hydroxides, alkali, alkaline earth metal hydrides, alkaline earth metal carboxylates, and alkaline earth hydroxides, and wherein the catalyst is present in an amount of from 0.004 to 0.1 wt. % based on the amount of polyol; and neutralizing the polyol with from 0.75 to 1 mol of sulfuric acid per mol of catalyst used.