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:
Feb. 11, 2025
Filed:
Jul. 29, 2020
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Marinus A. Bigi, Pearland, TX (US);
Arjun Raghuraman, Pearland, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/30 (2006.01); B01J 31/02 (2006.01); C08G 18/48 (2006.01); C08G 65/26 (2006.01);
U.S. Cl.
CPC ...
C08G 65/30 (2013.01); B01J 31/0225 (2013.01); C08G 18/48 (2013.01); C08G 65/2645 (2013.01);
Abstract
A process for purifying a polyether polyol including treating the polyether polyol with a mixture of: (i) a sulfonic acid catalyst, wherein the catalyst includes a substituted or unsubstituted alkyl group of at least 6 carbon atoms, and (ii) water to reduce residual levels of acetal linkages present in the polyether polyol; a purified polyether polyol prepared using the above treatment process; and a polyurethane product prepared by reacting the above purified polyether polyol and an isocyanate.