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:
Nov. 07, 1995
Filed:
Oct. 19, 1994
Applicant:
Inventors:
Richard Vicari, Corpus Christi, TX (US);
George Kvakovszky, Corpus Christi, TX (US);
Olan S Fruchey, Corpus Christi, TX (US);
Assignee:
Hoechst Celanese Corporation, Somerville, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 68 ; 528 73 ; 528 96 ; 528128 ; 528172 ; 528173 ; 528175 ; 528176 ; 528184 ; 528185 ; 528190 ; 528191 ; 528201 ; 528202 ; 528203 ; 528206 ; 528208 ; 528210 ;
Abstract
The present invention provides novel substituted biphenyl pyrazines or pyrazine derivatives ('BPD') 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; and as pigments for coating compositions such as paints. These BPD have the general formula: ##STR1## wherein R.sub.1 -R.sub.8 and n are defined herein.