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. 04, 2025
Filed:
Jan. 11, 2022
Applicant:
Saudi Aramco Technologies Company, Dhahran, SA;
Inventors:
Mohammad S. Alroaithi, Thuwal, SA;
Hussain M. Yami, Thuwal, SA;
Ola Ali, Thuwal, SA;
Wei Xu, Thuwal, SA;
Assignee:
SAUDI ARABIAN OIL COMPANY, Dhahran, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/02 (2006.01); B01J 19/00 (2006.01); B01J 19/18 (2006.01); C08G 64/20 (2006.01); C08G 64/34 (2006.01); C08G 64/40 (2006.01); C08G 65/26 (2006.01);
U.S. Cl.
CPC ...
C08G 64/0208 (2013.01); B01J 19/0066 (2013.01); B01J 19/18 (2013.01); C08G 64/205 (2013.01); C08G 64/34 (2013.01); C08G 64/403 (2013.01); C08G 65/26 (2013.01); C08G 65/2642 (2013.01); B01J 2219/00164 (2013.01); B01J 2219/00166 (2013.01);
Abstract
A method of continuously producing a polyol includes: (i) feeding a solid catalyst into a continuous stirred tank reactor (CSTR); (ii) contacting a reaction mixture comprising one or more epoxides and carbon dioxide with the solid catalyst and a chain transfer agent comprising a plurality of sites capable of initiating copolymerization of epoxides and carbon dioxide in the CSTR; (iii) allowing polymerization reaction to proceed until a desired molecular weight polyol has formed; and (iv) terminating the polymerization reaction.