Wholly aromatic or aliphatic aromatic block copolyamides and pro

Details Wholly aromatic or aliphatic aromatic block copolyamides and pro Wholly aromatic or aliphatic aromatic block copolyamides and pro

1983-02-15

1985-04-16

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528207, 528208, 528312, 528313, 528314, 528315, 528319, 528335, 528336, 528347, 528348, C08G 6912

Patent

active

045117098

ABSTRACT:
High molecular weight block copolyamides useful in the production of fibers of high strength and modulus, having the following formula: ##STR1## wherein X is --CH.sub.2 --.sub.m, wherein m is 0 to 12, ##STR2## wherein Z is C(CH.sub.3).sub.2, zero, oxygen or SO.sub.2, are prepared from N,N'-bis(4-aminophenyl) terephthalamide having the formula: ##STR3## which is itself prepared by condensing aniline with dimethyl terephthalate or terephthalic acid, nitrating the product produced thereby and finally hydrogenating the resultant compound.

REFERENCES:
patent: 3770704 (1973-11-01), Dobinson
patent: 4169932 (1979-10-01), Sokolov et al.
patent: 4308374 (1981-12-01), Vollbracht et al.
patent: 4309531 (1982-01-01), Kyritsos et al.

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