Methods of controlling molecular weight distribution of polymers and compositions thereof

Patent No. 7,858,729

Issued: December 28, 2010
Filed: May 29, 2008

Inventor: Allen; Scott D. (Ithaca, NY)
Assignee: Novomer, Inc. (Ithaca, NY)

A catalyst, co-catalyst, and/or chain transfer agent is added at a time after initiation of an addition polymerization reaction to produce a polymer product with a widened molecular weight distribution relative to having all of the components in the original reaction mixture. The catalyst, co-catalyst, or chain transfer agent may be added discretely or continuously to the reaction to produce a product with a bimodal, trimodal, or other broadened molecular weight distribution.

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