Okamoto Corporation

Hiromi Kashihara

Kiyokazu Shuku

An anti-pilling treating method is proposed in which protein fiber materials that are constant in quality and have sufficient softness and drape can be stably manufactured. Protein fiber is subjected to cross-linking reaction under weak alkaline conditions of pH 8.5&#x2013;9.9 at the beginning of the reaction and pH 7.0&#x2013;7.9 at the end of the reaction by use of a cross-linking agent containing 1 wt % or over of one or more of pyrimidine compound selected from the group consisting of 2,4,6-trichloropyrimidine, 2,6-dichloropyrimidine, 2,6-dichloro-4-aminopyrimidine, 4,6-dichloropyrimidine and 2-amino-4,6 dichloropyrimidine.

Anti-pilling treating method for protein fiber material

A clothing with effects on the reduction of skin dryness, skin roughness, wrinkle and spot is provided, together with a method for attaching a microcapsule. The metabolism of keratin layer is promoted by using a clothing prepared by attaching to the fiber, a microcapsule containing and sealing therein at least 10% by weight of at least one &agr;-hydroxy acid. Chitosan is used as a crosslinking agent. The microcapsule and chitosan are given within a range of from about 4:1 to about 1:6 in weight ratio. The total amount of the chitosan and the microcapsule occupies from about 0.1 to about 15% of the fiber weight at a dry state.

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Nara, Japan

Hiromi Kashihara