Bifunctional phenylene ether oligomer, its derivatives, its use and process for the production thereof

US6794481B2 · kind B2 · utility

Assignee

• Mitsubishi Gas Chemical Company, Inc. · JP

Inventors

• Akikazu Amagai · Tokyo, JP
• Kenzi Ishii · Tokyo, JP
• Kiyonari Hiramatsu · Tokyo, JP
• Makoto Miyamoto · Ome, JP
• Daisuke Ohno · Tokyo, JP
• Katsutoshi Yamazaki · Kawasaki, JP
• Yasumasa Norisue · Tokyo, JP

Key dates

• Filing date: Jun 27, 2002
• Grant date: Sep 21, 2004
• Expiry date: Aug 19, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31511
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A bifunctional phenylene ether oligomer of the formula (1), obtained by oxidation polymerization of abivalent phenol of the formula (2) and a monovalent phenol of the formula (3),H&Brketopenst;O—Y&Brketclosest;a&Parenopenst;O—X—O&Parenclosest;&Brketopenst;Y—O&Brketclosest;bH  (1) HO—X—OH  (2) Y—OH  (3) wherein —X— is represented by the formula (2′),  and Y—O— is represented by the formula (3), R2, R3, R4, R8, R9, R10 and R11 in the formula (2′) and the formula (3′) being required not to be a hydrogen atom, and its use.