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:
Sep. 15, 2020
Filed:
Nov. 10, 2017
Applicant:
Econic Technologies Ltd., Macclesfield, GB;
Inventors:
Assignee:
Econic Technologies Ltd., Macclesfield, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/34 (2006.01); C08G 65/26 (2006.01); C08G 64/02 (2006.01); C08G 18/44 (2006.01);
U.S. Cl.
CPC ...
C08G 64/34 (2013.01); C08G 18/44 (2013.01); C08G 64/0208 (2013.01); C08G 65/2603 (2013.01); C08G 65/2663 (2013.01);
Abstract
The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound. The catalyst of formula (I) is as follows: