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:
Oct. 20, 2020
Filed:
Mar. 13, 2018
Applicants:
Andrey Bagreev, Chesterfield, VA (US);
George E. Hicks, Elizabeth, IN (US);
Inventors:
Andrey Bagreev, Chesterfield, VA (US);
George E. Hicks, Elizabeth, IN (US);
Assignee:
The Dallas Group of America, Inc., Whitehouse, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/30 (2006.01); C08G 65/26 (2006.01); B01J 20/28 (2006.01); B01J 20/10 (2006.01); B01J 20/22 (2006.01); B01J 20/30 (2006.01);
U.S. Cl.
CPC ...
C08G 65/30 (2013.01); B01J 20/10 (2013.01); B01J 20/22 (2013.01); B01J 20/28004 (2013.01); B01J 20/28011 (2013.01); B01J 20/28059 (2013.01); B01J 20/28061 (2013.01); B01J 20/28064 (2013.01); B01J 20/28069 (2013.01); B01J 20/3085 (2013.01); C08G 65/2609 (2013.01); C08G 65/2648 (2013.01);
Abstract
A method of purifying a crude polyalkylene oxide polymer that contains a catalyst, such as potassium hydroxide. The method comprises contacting the crude polyalkylene oxide polymer with a composition comprising an acid functionalized silicate, such as an acid functionalized magnesium silicate adsorbent containing at least one acid in an amount effective to remove the catalyst from the polyalkylene oxide polymer. Such a method provides for an improved removal of the catalyst from the polyalkylene oxide polymer.