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:
Jun. 02, 1992
Filed:
Sep. 10, 1990
Applicant:
Inventors:
Assignee:
Ube Industries, Ltd., , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528193 ; 528125 ; 528128 ; 528171 ; 528173 ; 528176 ; 528194 ;
Abstract
A thermotropic aromatic polyester comprising (a) an aromatic dicarbonyl ingredient comprising recurring aromatic units of the formulae (I) and/or (II): ##STR1## and, optionally, other recurring aromatic dicarbonyl units, (b) an aromatic dioxy ingredient comprising recurring aromatic units of the formula (III) ##STR2## wherein R.dbd.--H, C.sub.1-8 alkyl, aryl or Halogen atom, and optionally, (c) an aromatic oxycarbonyl ingredient comprising recurring aromatic oxycarbonyl units, of, for example, the formula (IV): ##STR3##