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:
Jan. 16, 2018
Filed:
Mar. 10, 2015
Applicant:
Saudi Aramco Technologies Company, Dhahran, SA;
Inventors:
Scott D. Allen, Ithaca, NY (US);
Jeffrey R. Conuel, Ithaca, NY (US);
David E. Decker, Ithaca, NY (US);
Anna E. Cherian, Ithaca, NY (US);
Assignee:
Saudi Aramco Technologies Company, Dharan, SA;
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/96 (2006.01); C08G 64/02 (2006.01); C08G 64/34 (2006.01); C08G 64/40 (2006.01);
U.S. Cl.
CPC ...
C08G 64/0208 (2013.01); C08G 64/34 (2013.01); C08G 64/406 (2013.01);
Abstract
The present disclosure is directed to, in part, an aliphatic polycarbonate polymerization reaction initiated by combining an epoxide with carbon dioxide in the presence of a catalytic transition metal-ligand complex to form a reaction mixture, and further quenching that polymerization reaction by contacting the reaction mixture with an acid containing a non-nucleophilic anion produces a crude polymer solution with improved stability and processability.