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CN-121986197-A - Regenerated collagen fiber treatment method, modified regenerated collagen fiber and head ornament product with same

CN121986197ACN 121986197 ACN121986197 ACN 121986197ACN-121986197-A

Abstract

A method for treating regenerated collagen fibers, comprising the following step (i). A step (i) of immersing a regenerated collagen fiber having a fiber swelling ratio in water of 200% or more calculated according to the following formula (1) in a fiber treating agent containing component (A), wherein (A) is a copolymer comprising a structural unit derived from an unsaturated monomer having a carboxyl group or a salt thereof and a structural unit derived from an aromatic vinyl compound, the copolymer having an acid value of 100mgKOH/g or more and a weight average molecular weight of 1500 to 15000, wherein the fiber swelling ratio in water (%) = [ (w 1-w 2)/w 2 ]. Times.100 (1) [ wherein w1 represents the mass (g) of the fiber measured by placing the fiber having been measured on a filter paper and drying the fiber at 105 ℃ for 3 hours, in a container filled with ion-exchanged water of 100g, sealing the container together with the container in a water bath at 40 ℃ for 30 minutes, and thereafter taking out the fiber from the container, centrifuging the fiber at a centrifugal force of 220 [. Times.g ] for 1 minute, and wherein w2 represents the mass (g) of the fiber measured by the fiber is measured after drying the fiber at 105 ℃ for 3 hours.

Inventors

  • NAOYA TONEGAWA
  • KAWAMURA KOHEI
  • Daiwa Takashi

Assignees

  • 花王株式会社
  • 株式会社钟化

Dates

Publication Date
20260505
Application Date
20241010
Priority Date
20231012

Claims (11)

  1. 1. A method for treating regenerated collagen fibers, wherein, The regenerated collagen fiber treatment method comprises the following steps (i), A step (i) of immersing regenerated collagen fibers having a fiber swelling ratio in water of 200% or more calculated according to the following formula (1) in a fiber treatment agent containing the component (A), (A) A copolymer comprising a structural unit derived from an unsaturated monomer having a carboxyl group or a salt thereof and a structural unit derived from an aromatic vinyl compound, the copolymer having an acid value of 100mgKOH/g or more and a weight average molecular weight of 1500 to 15000, Fiber swelling ratio (%) = [ (w 1-w 2)/w 2] ×100 (1) in water In the formula, W1 represents the mass g of the fiber measured after putting 1.0g of the fiber into a container filled with 100g of ion exchange water, sealing the container, immersing the container in a water bath at 40℃for 30 minutes together with the container, and then taking out the fiber from the container and centrifugally dehydrating the fiber for 1 minute at a centrifugal force of 220 Xg, W2 represents the mass of the fiber measured by placing the fiber of the measured mass w1 on a filter paper and drying at 105 ℃ for 3 hours.
  2. 2. The method for treating regenerated collagen fibers according to claim 1, wherein, The regenerated collagen fiber contains the following component (B), (B) A polyvalent metal, or a salt or complex thereof.
  3. 3. The method for treating regenerated collagen fibers according to claim 2, wherein, Component (B) is aluminum, or a salt or complex thereof.
  4. 4. The method for treating regenerated collagen fibers according to any one of claim 1 to 3, Before the step (i), a step of producing regenerated collagen fibers by solubilizing insoluble collagen fibers using a skin plate of a livestock animal as a raw material, spraying the obtained collagen aqueous solution through a spinning nozzle or a slit, and immersing the resulting collagen aqueous solution in an inorganic salt aqueous solution.
  5. 5. A modified regenerated collagen fiber, wherein, The modified regenerated collagen fiber is formed by containing a component (A) in the regenerated collagen fiber, (A) A copolymer comprising a structural unit derived from an unsaturated monomer having a carboxyl group or a salt thereof and a structural unit derived from an aromatic vinyl compound, wherein the copolymer has an acid value of 100mgKOH/g or more and a weight average molecular weight of 1500 to 15000.
  6. 6. The modified regenerated collagen fiber according to claim 5, wherein, The content of the component (A) is 0.1 to 70 mass%.
  7. 7. The modified regenerated collagen fiber according to claim 5 or 6, wherein, Further comprises the following component (B), (B) A polyvalent metal, or a salt or complex thereof.
  8. 8. The modified regenerated collagen fiber according to claim 7, wherein, Component (B) is aluminum, or a salt or complex thereof.
  9. 9. A method for producing a modified regenerated collagen fiber, wherein, The method for treating regenerated collagen fibers according to any one of claims 1 to 4.
  10. 10. A method for manufacturing a head ornament product, wherein, The method for treating regenerated collagen fibers according to any one of claims 1 to 4.
  11. 11. A headwear article, wherein the article comprises a base, The modified regenerated collagen fiber according to any one of claims 5 to 8 as a constituent element.

Description

Regenerated collagen fiber treatment method, modified regenerated collagen fiber and head ornament product with same Technical Field The present invention relates to a method for treating regenerated collagen fibers, and more particularly to a method for treating regenerated collagen fibers used for fiber products such as hair wear products including wigs and hair extension pieces. Background Regenerated collagen fibers generally differ from synthetic fibers in that they have a natural feel and appearance derived from natural materials. Regenerated collagen fibers are usually produced by dissolving acid-soluble collagen or insoluble collagen with alkali or enzyme to prepare a spinning dope, discharging the spinning dope from a spinning nozzle into a coagulation bath to be fibrillated, and then drying the fibrous collagen in a final step. However, regenerated collagen fibers are generally highly hydrophilic and therefore have a high water absorption rate as compared with synthetic fibers, and have extremely low mechanical strength in a state where they contain a large amount of water. Therefore, the mechanical strength is significantly reduced due to high water absorption during cleaning, and breakage or the like occurs during subsequent drying, resulting in reduced applicability as a fibrous product such as a head-wear product. In addition, the regenerated collagen fibers have a problem of low heat resistance, for example, in heat setting using a hair iron or the like, shrinkage or curling occurs when setting is performed at the same high temperature as human hair, and aesthetic properties are impaired. In addition, although the shape of the synthetic fiber made of plastic can be maintained (having thermal shape memory ability) even after washing by a hair iron or the like when heat-setting is performed, the regenerated collagen fiber has a disadvantage in that the shape disappears (no thermal shape memory ability) in one washing after heat-setting by a hair iron or the like, and thus there is a disadvantage in view of the degree of freedom of molding compared with the conventional synthetic fiber made of plastic. Accordingly, various studies have been made to solve the above-described problems of natural source fibers such as regenerated collagen fibers. For example, it has been reported that, in a fabric containing at least 10 wt% of wool, the wool is crosslinked by an acrylic resin, whereby loss (fuzzing) due to friction at the time of washing can be suppressed (patent document 1). It has also been reported that the above-mentioned problems regarding water resistance, heat resistance and thermal shape memory ability, which are specific to regenerated collagen fibers, can be solved by treating the regenerated collagen fibers with a fiber treatment agent containing a specific methylol compound and a specific phenol compound (patent document 2). (Patent document 1) Japanese patent laid-open No. 1-260062 (Patent document 2) Japanese patent application laid-open No. 2022-103113 Disclosure of Invention The present invention provides [ 1] to [ 11 ]. [ 1] A method for treating regenerated collagen fibers, wherein the method for treating regenerated collagen fibers comprises the following step (i), A step (i) of immersing regenerated collagen fibers having a fiber swelling ratio in water of 200% or more calculated according to the following formula (1) in a fiber treating agent containing the following component (A), (A) A copolymer comprising a structural unit derived from an unsaturated monomer having a carboxyl group or a salt thereof and a structural unit derived from an aromatic vinyl compound, the copolymer having an acid value of 100mgKOH/g or more and a weight average molecular weight of 1500 to 15000, Fiber swelling ratio (%) = [ (w 1-w 2)/w 2] ×100 (1) in water In the above-mentioned method, in the above-mentioned process, W1 represents the mass (g) of the fiber measured after putting 1.0g of the fiber into a container filled with 100g of ion-exchanged water, sealing the container, immersing the container in a water bath at 40℃for 30 minutes together with the container, and then taking out the fiber from the container and centrifugally dehydrating the fiber for 1 minute at a centrifugal force of 220 [. Times.g ], W2 represents the mass of the fiber measured after the fiber of the measured mass (w 1) was placed on a filter paper and dried at 105℃for 3 hours. A kind of electronic device The method for treating a regenerated collagen fiber according to [ 1] above, wherein the regenerated collagen fiber contains the following component (B), (B) A polyvalent metal, or a salt or complex thereof. The method for treating a regenerated collagen fiber according to [ 2] above, wherein the component (B) is aluminum or a salt or a complex thereof. The method for treating a regenerated collagen fiber according to any one of [ 1] to [ 3 ], wherein the method comprises a step of solubilizing an insoluble collagen fiber