| 摘要 |
A regenerated collagen fiber is subjected to water-insolubilizing treatment with a monofunctional epoxy compound to produce a water-insolubilized regenerated collagen fiber which can substantially maintain the color and the high knot tenacity, inherent in the collagen. Where the monofunctional epoxy compound is an epihalohydrin, a regenerated collagen fiber can be treated with this epihalohydrin and a sulfur compound to produce a water-insolubilized regenerated collagen fiber which can be permanent-wave set. In addition, the water-insolubilized regenerated collagen fiber can be converted into a fiber which can be permanent-wave set, by introducing a disulfide linkage into carboxylic groups of the collagen, which remain unmodified by the insolubilizing treatment.
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