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:
Jul. 20, 2010
Filed:
Mar. 27, 2008
Larry F. Rhodes, Silver Lake, OH (US);
Steven Smith, Broadview Heights, OH (US);
Pramod Kandanarachchi, Brecksville, OH (US);
Chun Chang, Stow, OH (US);
Patrick Bradley, Kent, OH (US);
Larry F. Rhodes, Silver Lake, OH (US);
Steven Smith, Broadview Heights, OH (US);
Pramod Kandanarachchi, Brecksville, OH (US);
Chun Chang, Stow, OH (US);
Patrick Bradley, Kent, OH (US);
Promerus LLC, Brecksville, OH (US);
Abstract
A method of controlling the molecular weight of poly(cyclic)olefin (norbornene-type) polymers and activating the polymerization thereof with a single material is provided. Such method include adding a chain transfer/activating agent to a mixture of monomer(s), catalyst, solvent and an optional cocatalyst and polymerizing the mixture to form a polymer. It is shown that the amount of chain transfer/activating agent in the mixture can serve to control the molecular weight of the resulting polymer, its percent conversion or both, and in some embodiments the optical density of the resulting polymer.