Process for preparing terminally functionalized living and quasiliving cationic telechelic polymers

US7576161B2 · kind B2 · utility

Assignees

• CHEVRON ORONITE COMPANY LLC · US
• The University of Southern Mississippi · US

Inventors

• Casey D. Stokes · Belle Chasse, US
• Robson F. Storey · Hattiesburg, US
• James J. Harrison · Novato, US

Key dates

• Filing date: Jul 20, 2005
• Grant date: Aug 18, 2009
• Expiry date: Jan 30, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2030/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with an N-substituted pyrrole to thereby functionalize the N-substituted pyrrole at the terminal reactive polymer chain end(s). Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.