Mitsui Chemicals, Inc.

Kouichi Uchiki

Akihiro Funae

Hideyuki Akieda

Yuzo Ono

A random-block copolymer having appropriate hydrolyzability, excellent flexibility and excellent mechanical strength, a monofilament thereof, and a process for producing the copolymer. The random-block copolymer comprises from 5 to 50 mol % of a random copolymer segment containing from 20 to 80 mol % of a lactide unit (A) and from 80 to 20 mol % of a caprolactone unit (B), and from 95 to 50 mol % of a block copolymer segment containing a glycolide unit (C).

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Aichi-ken, Japan

Kouichi Uchiki