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:
Dec. 28, 1993
Filed:
Feb. 01, 1991
Applicant:
Inventors:
Toshihiro Santa, Ehime, JP;
Tsutomu Kiriyama, Ehime, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
5283291 ; 528179 ; 528183 ; 528222 ; 528229 ; 528331 ; 528336 ; 528338 ; 528348 ; 4284744 ;
Abstract
A wholly aromatic polyamide capable of being dissolved in organic solvents to form an isotropic dope solution and having an excellent chemical resistance, heat resistance, processability and mechanical strength and a high modulus, comprises recurring aromatic dicarbonyl units of the formulae: ##STR1## and recurring aromatic diamine units of the formulae: ##STR2## wherein R and R' are a hydrogen or halogen atom or an alkyl or alkoxyl radical, n is 1 to 3, and p and q are 1 to 4.