Substituted pyrazines

US5459266A · kind A · utility

Assignee

• Hoechst Celanese Corporation · US

Inventors

• George Kvakovszky · Port Aransas, US
• Richard Vicari · Pearland, US
• Ahamed M. Tafesh · Port Aransas, US
• Kathleen Nelson Juneau · Port Aransas, US
• Olan S. Fruchey · Port Aransas, US
• Joseph A. McDonough · Port Aransas, US
• Debasish Kuila · Port Aransas, US

Key dates

• Filing date: Feb 4, 1994
• Grant date: Oct 17, 1995
• Expiry date: Feb 4, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/23
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides novel substituted pyrazines or pyrazine derivatives ("NPD") which are functional and have useful application as a monomer for a variety of high performance polymers such as polyester, polyarylate, polycarbonate, polyetherketones, epoxides, polyimides, polyamides, and polyamides-imides. These NPD have the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are defined herein.