Ni or Pd-catalyzed cationic polymerization of polycyclic olefins with silane chain transfer agents

US7863394B2 · kind B2 · utility

Assignee

• PROMERUS, LLC · US

Inventors

• Larry F. Rhodes · Silver Lake, US
• Dennis A. Barnes · Brunswick, US
• Andrew Bell · Lakewood, US
• Brian K. Bennett · Stansbury Park, US
• Chun Chang · Kaohsiung, TW
• John-Henry Lipian · Broadview Heights, US
• Xiaoming Wu · Jinan, CN

Key dates

• Filing date: Sep 7, 2006
• Grant date: Jan 4, 2011
• Expiry date: Dec 17, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/905
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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 H2, 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.