Aramid polymer from aromatic dicarboxylic acid mixture and aroma

Details Aramid polymer from aromatic dicarboxylic acid mixture and aroma Aramid polymer from aromatic dicarboxylic acid mixture and aroma

1989-12-08

1991-04-23

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528184, 528194, 528220, 528229, 528337, 528339, 528340, 528348, 528349, C08G 6932

Patent

active

050101684

ABSTRACT:
Copolyamides are described comprising: (1) 0.22-0.28 mole fraction units derived from terephthalic acid; (2) 0.2-0.28 mole fraction units derived from paraphenylene diamine; (3) 0.22-0.28 mole fraction units derived from isophthalic acid; and (4) 0.22-0.28 mole fraction units derived from a 3,3'- or 4,4'-diamine of diphenyl methane, diphenylpropane-2,2, diphenyl cyclohexane-1,1, diphenyl ether, diphenyl sulfide, diphenyl sulphone, or benzophenone.

REFERENCES:
patent: 3475387 (1969-10-01), Carter et al.

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