Chung Hsi Chang

US Patent:

7674847, Mar 9, 2010

Filed:

Feb 19, 2004

Appl. No.:

10/782547

Inventors:

Larry F. Rhodes - Silver Lake OH, US
Dennis A. Barnes - Medina OH, US
Andrew Bell - Lakewood OH, US
Brian K. Bennet - Brecksville OH, US
Chung Chang - Stow OH, US
John-Henry Lipian - Medina OH, US
Xiaoming Wu - Strongsville OH, US

Assignee:

Promerus LLC - Brecksville OH

International Classification:

C08F 4/44

US Classification:

524171, 526279, 526282, 5263171, 526905

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 form 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.