O-Tolidine sulfone based copolyamide fiber

Details O-Tolidine sulfone based copolyamide fiber O-Tolidine sulfone based copolyamide fiber

1981-03-13

1983-02-08

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

264176F, 528336, 528340, 528341, 528347, C08G 6932

Patent

active

043730876

ABSTRACT:
A novel copolyamide fiber having an excellent initial modulus of elasticity and mechanical strength, is made from a copolyamide consisting essentially of unit A of the formula (A): ##STR1## unit (B) of the formula (B): ##STR2## and unit (C) of the formula (C): ##STR3## wherein CH.sub.3 groups in the formula (A) are located in the ortho-position to NH groups, the sum of the amount of units (A) and (B) is substantially equimolar to the amount of unit (C) and the molar ratio of unit (A) to unit (B) is from 10/90 to 50/50.

REFERENCES:
patent: 3467623 (1969-09-01), Hinderer et al.
patent: 4178431 (1979-12-01), Kaneda et al.

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