The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1995
Filed:
Feb. 04, 1994
Applicant:
Inventors:
George Kvakovszky, Corpus Christi, TX (US);
Richard Vicari, Corpus Christi, TX (US);
Olan S Fruchey, Corpus Christi, TX (US);
Ahmed M Tafesh, Corpus Christi, TX (US);
Charles B Hilton, Corpus Christi, TX (US);
Assignee:
Hoechst Celanese Corporation, Somerville, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C09K / ;
U.S. Cl.
CPC ...
528172 ; 528186 ;
Abstract
The present invention provides new polymer compositions which contain novel substituted pyrazines or pyrazine derivatives ('NPD') which are functional and have useful application as a monomer (co-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.