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. 16, 2021
Filed:
Nov. 09, 2017
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Nima N. Nikbin, Lake Jackson, TX (US);
David A. Babb, Lake Jackson, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/34 (2006.01); C08G 64/02 (2006.01); C08G 65/26 (2006.01); C08L 69/00 (2006.01); B01J 27/26 (2006.01); B01J 31/18 (2006.01); C08G 64/20 (2006.01); C08G 18/44 (2006.01);
U.S. Cl.
CPC ...
C08G 64/34 (2013.01); B01J 27/26 (2013.01); B01J 31/1805 (2013.01); C08G 18/44 (2013.01); C08G 64/0208 (2013.01); C08G 64/205 (2013.01); C08G 65/2603 (2013.01); C08G 65/2663 (2013.01); C08L 69/00 (2013.01); B01J 2531/0238 (2013.01);
Abstract
A method of manufacturing a poly(ether-carbonate) polyol comprises a polymerization stage that includes polymerizing carbon dioxide and at least one alkylene oxide, with a starter, in the presence of a double metal cyanide polymerization catalyst and a catalyst promoter that is devoid of halide anions and cyanide. The catalyst promoter is separate from the double metal cyanide polymerization catalyst.