Ube Industries, Inc.

Masahiro Ueda

Seiji Ishikawa

Hiroshi Daimon

Toshio Katsura

Tadahiro Hondo

Takaho Kaneda

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.

Growing community of inventors

Ichihara, Japan

Masahiro Ueda