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. 19, 2024
Filed:
Jan. 06, 2020
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Marinus A. Bigi, Pearland, TX (US);
Nima Nikbin, Lake Jackson, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/40 (2006.01); B01J 20/18 (2006.01); B01J 20/26 (2006.01); C08G 64/02 (2006.01); C08G 64/30 (2006.01); C08G 64/34 (2006.01); C08G 65/30 (2006.01);
U.S. Cl.
CPC ...
C08G 64/406 (2013.01); B01J 20/18 (2013.01); B01J 20/267 (2013.01); C08G 64/0208 (2013.01); C08G 64/302 (2013.01); C08G 64/34 (2013.01); C08G 65/30 (2013.01);
Abstract
Alkylene carbonates are removed from polyether-carbonate polymers by contacting the polyether-carbonate with an absorbent at a temperature of 30 to 150° C. The process is effective and inexpensive. The purified polyether-carbonate is useful for making polyurethanes as well as in many other applications.