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:
Jul. 02, 2024
Filed:
Aug. 21, 2018
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Jean-Paul Masy, Destelbergen, BE;
David A. Babb, Lake Jackson, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/12 (2006.01); C08G 18/16 (2006.01); C08G 18/18 (2006.01); C08G 18/20 (2006.01); C08G 18/24 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08G 65/02 (2006.01); C08G 65/26 (2006.01);
U.S. Cl.
CPC ...
C08G 65/12 (2013.01); C08G 18/165 (2013.01); C08G 18/1833 (2013.01); C08G 18/2063 (2013.01); C08G 18/244 (2013.01); C08G 18/4816 (2013.01); C08G 18/4829 (2013.01); C08G 18/4837 (2013.01); C08G 18/7664 (2013.01); C08G 65/02 (2013.01); C08G 65/26 (2013.01); C08G 65/2663 (2013.01); C08G 65/269 (2013.01); C08G 65/2696 (2013.01); C08G 2110/0016 (2021.01); C08G 2110/0058 (2021.01); C08G 2110/0083 (2021.01);
Abstract
An alkylene oxide mixture containing greater than 50% by weight ethylene oxide is continuously polymerized in the presence of a double metal cyanide polymerization catalyst and an alkoxylated initiator having a hydroxyl equivalent weight of up to 200. The catalyst remains active, producing a polyol having an equivalent weight of up to 700 with a high oxyethylene content continuously at fast reaction rates.