Modified regenerated collagen fiber, production method therefor, and headdress product containing same

Abstract

Modified regenerated collagen fibers which have improved water resistance and heat resistance problematic in regenerated collagen fibers, impart heat shape memory ability, are excellent in stretchability (tenacity) and the feel of the surfaces, and have no coloring. The modified regenerated collagen fibers contain 1.0 mass % or more of the following component (A) as benzoic acid in regenerated collagen fibers: (A) benzoic acid or a salt thereof.

1 . Modified regenerated collagen fibers comprising 1.0 mass % or more of the following component (A) as benzoic acid in regenerated collagen fibers:
 (A) benzoic acid or a salt thereof.   
     
     
         2 . The modified regenerated collagen fibers according to  claim 1 , wherein a content of the component (A) is from 1.0 to 50 mass % as benzoic acid. 
     
     
         3 . The modified regenerated collagen fibers according to  claim 1 , wherein a content of the component (A) is from 5.0 to 40 mass % as benzoic acid. 
     
     
         4 . The modified regenerated collagen fibers according to  claim 1 , further comprising the following component (B):
 (B) a polyvalent metal, or a salt or complex thereof.   
     
     
         5 . The modified regenerated collagen fibers according to  claim 4 , wherein the component (B) is aluminum, or a salt or complex thereof. 
     
     
         6 . A method for treating regenerated collagen fibers comprising:
 immersing regenerated collagen fibers in a fiber-treating agent comprising the following component (A):   (A) benzoic acid or a salt thereof.   
     
     
         7 . The method for treating regenerated collagen fibers according to  claim 6 , wherein the regenerated collagen fibers comprise the following component (B):
 (B) a polyvalent metal, or a salt or complex thereof.   
     
     
         8 . The method for treating regenerated collagen fibers according to  claim 7 , wherein the component (B) is aluminum, or a salt or complex thereof. 
     
     
         9 . A method for producing modified regenerated collagen fibers, comprising treating regenerated collagen fibers by the method of  claim 6 . 
     
     
         10 . A method for producing a headdress product, comprising treating regenerated collagen fibers by the method of  claim 6 . 
     
     
         11 . A headdress product comprising the modified regenerated collagen fibers of  claim 1  as a constituent element.