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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.:

US 8956989 B1

PDFFull Text
Date of Patent:
Feb. 17, 2015

Filed:

Jan. 31, 2013

Catalysts and methods for polymer synthesis

Applicant:

Novomer, Inc., Ithaca, NY (US);

Inventors:

Scott D. Allen, Ithaca, NY (US);

Anna E. Cherian, Ithaca, NY (US);

Chris A. Simoneau, Ithaca, NY (US);

Jay J. Farmer, Ithaca, NY (US);

Geoffrey W. Coates, Ithaca, NY (US);

Alexei Gridnev, Ithaca, NY (US);

Robert E. LaPointe, Ithaca, NY (US);

Assignee:

Novomer, Inc., Ithaca, NY (US);

Attorneys:

Choate, Hall & Stewart, LLP

Charles E. Lyon

John P. Rearick

Primary Examiner:

Duc Truong

Int. Cl.
CPC ...
B01J 31/00 (2006.01); C07F 15/06 (2006.01); B01J 31/18 (2006.01); C07C 251/24 (2006.01); C07C 279/12 (2006.01); C07D 213/53 (2006.01); C07D 487/04 (2006.01); C07D 487/22 (2006.01); C07F 9/535 (2006.01); C07F 9/6561 (2006.01); C08G 64/34 (2006.01); C08F 4/80 (2006.01); C07F 19/00 (2006.01); B01J 37/00 (2006.01); B01J 31/02 (2006.01); B01J 31/22 (2006.01);
U.S. Cl.
CPC ...
C07F 15/065 (2013.01); B01J 31/182 (2013.01); C07C 251/24 (2013.01); C07C 279/12 (2013.01); C07D 213/53 (2013.01); C07D 487/04 (2013.01); C07D 487/22 (2013.01); C07F 9/5355 (2013.01); C07F 9/6561 (2013.01); C08G 64/34 (2013.01); C08F 4/80 (2013.01); C07F 19/005 (2013.01); B01J 31/0239 (2013.01); B01J 31/0259 (2013.01); B01J 31/0265 (2013.01); B01J 31/183 (2013.01); B01J 31/1835 (2013.01); B01J 31/2243 (2013.01); B01J 2531/0238 (2013.01); B01J 2531/025 (2013.01); B01J 2531/0252 (2013.01); B01J 2531/0294 (2013.01); B01J 2531/31 (2013.01); B01J 2531/62 (2013.01); B01J 2531/845 (2013.01); C07C 2101/14 (2013.01);
Abstract

The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.

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