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. 15, 2011
Filed:
Feb. 04, 2010
Larry F. Rhodes, Silver Lake, OH (US);
Dennis A. Barnes, Medina, OH (US);
Andrew Bell, Lakewood, OH (US);
Brian K. Bennett, Stansbury Park, UT (US);
Chun Chang, Carmel, IN (US);
John Henry Lipian, Medina, OH (US);
Xiaoming Wu, Lexington, KY (US);
Larry F. Rhodes, Silver Lake, OH (US);
Dennis A. Barnes, Medina, OH (US);
Andrew Bell, Lakewood, OH (US);
Brian K. Bennett, Stansbury Park, UT (US);
Chun Chang, Carmel, IN (US);
John Henry Lipian, Medina, OH (US);
Xiaoming Wu, Lexington, KY (US);
Promerus LLC, Brecksville, OH (US);
Abstract
A method of polymerizing poly(cyclic)olefin monomers encompassing (a) combining a monomer composition containing the poly(cyclic)olefin monomers, a non-olefinic chain transfer agent and an activator compound to faun a mixture; (b) heating the mixture; and (c) adding a polymerization catalyst containing Ni and/or Pd. The non-olefinic chain transfer agent includes one or more compounds selected from H, alkylsilanes, alkylalkoxysilanes, alkylgermanes, alkylalkoxygermanes, alkylstannanes, and alkylalkoxystannanes. The activator is characterized as having an active hydrogen with a pKa of at least 5. The resulting poly(cyclic)olefin polymers can be used in photoresist compositions.