PRODUCTION OF MODIFIED CELLULOSE ACETATE FIBER

摘要

PROBLEM TO BE SOLVED: To shorten an enzymatic treatment time in a softening treatment of an acetate fiber comprising carrying out an alkali treatment of an acetate fiber and treatment with a cellulose decomposition enzyme. SOLUTION: Acetate fiber alone or a conjugate yarn comprising the acetate fiber and other fiber is subjected to alkali treatment with an alkali compound to convert at least surface of cellulose acetate fiber to cellulose. Then, the treated conjugate yarn is subjected to enzymatic treatment with a cellulolytic enzyme to decompose and remove the cellulose-forming part. In the alkali treatment by the alkali compound, the alkali treatment is carried out by jointly using hydrogen peroxide and a quaternary ammonium salt together with the alkali compound.