Wholly aromatic polyamide

Details Wholly aromatic polyamide Wholly aromatic polyamide

1991-02-01

1993-12-28

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528179, 528183, 528222, 528229, 528331, 528336, 528338, 528348, 4284744, C08G 6932, C08G 6912

Patent

active

052740714

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.

REFERENCES:
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patent: 4720538 (1988-01-01), Bartmann
patent: 4721772 (1988-01-01), Ueno et al.
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patent: 4910282 (1990-03-01), Abraham
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patent: 4987216 (1991-01-01), Keil
patent: 5026819 (1991-06-01), Irwin
patent: 5039785 (1991-08-01), Irwin
patent: 5077125 (1991-12-01), Croman
patent: 5093464 (1992-03-01), Yoon

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