Catalyst and methods for polymerizing cycloolefins

US6455650B1 · kind B1 · utility

Assignees

• B. F. Goodrich Company · US
• The Penn State Research Foundation · US

Inventors

• John-Henry Lipian · Broadview Heights, US
• Larry F. Rhodes · Silver Lake, US
• Brian L. Goodall · Ambler, US
• Andrew Bell · Lakewood, US
• Richard Mimna · Aurora, US
• John C. Fondran · Broadview Heights, US
• Saikumar Jayaraman · Chandler, US
• April Hennis · Ashland, US
• Christine N. Elia · Bound Brook, US
• Jennifer D. Polley · Exton, US
• Ayusman Sen · State College, US

Key dates

• Filing date: Oct 5, 1999
• Grant date: Sep 24, 2002
• Expiry date: Oct 5, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula:[(R′)zM(L′)x(L″)y]b[WCA]dwherein [(R′)zM(L′)x(L″)y] is a cation complex where M represents a Group 10 transition metal; R′ represents an anionic hydrocarbyl containing ligand; L′ represents a Group 15 neutral electron donor ligand; L″ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 4; and [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.