JPH03294578A - Modification of animal hair fiber - Google Patents

Abstract

PURPOSE:To impart animal hair fiber with shrink-resistance, hydrophobic property, etc., without impairing animal hair-like touch by treating animal hair with polyamino acid or its combination with a crosslinking agent, or by treating it with said combination after reducing it. CONSTITUTION:The objective modification can be accomplished by (A) treating animal hair with polyamino acid, (B) treating it with a combination of the polyamino acid and a crosslinking agent, or (C) treating it with said combination after reducing it. This treatment will also improve the tensile properties (mechanical strength and elongation), etc., of the animal hair fiber.

Description

[Detailed description of the invention]

[00013

[Industrial Application Field] The present invention relates to a method for modifying animal hair fibers, which modifies the properties of animal hair fibers such as shrink resistance, hydrophobicity, and fiber physical properties. [0002] BACKGROUND OF THE INVENTION Animal blankets have the drawback of shrinking significantly and turning into felt when washed at home, and various shrink-proofing methods have been developed to improve this problem. For example, the following a), b),
There are methods c) and e). A) Sodium hypochlorite for the cuticle of animal hair fibers,
Desorption method using chlorinating agents such as sodium dichloroisocyanurate and oxidizing agents such as monopersulfuric acid and potassium permanganate. b) After the chlorination side treatment of the animal hair fiber cuticle in a),
Method of coating with polyamide epichlorohydrin resin. c) A method of coating the cuticle of animal hair fibers with a synthetic polymer. e) A method of reducing the anisotropy of the coefficient of friction of animal hair fibers by modifying the fiber surface such as low-temperature plasma treatment or corona discharge treatment. [0003]

[Problem to be solved by the invention]

JP-A-3-294578 (3) Methods A), I) and C) above have actually been industrialized, and A) and I) are shrink-proofing treatments that are currently widely used. However, the fibers themselves were damaged by the oxidizing agent treatment, losing the hydrophobicity characteristic of animal hair fibers and becoming hydrophilic, which was accompanied by a deterioration in fiber performance. Regarding (3), the treatment method was limited to treatment of animal blankets in order to obtain satisfactory shrink-proofing properties, and there was a drawback that the texture was poor. Furthermore, method e) has not yet been put to industrial use. [0004] The present invention is intended to solve these problems, and aims to provide additional performance such as shrink-proofing, hydrophobicity, and improved strength and elongation while maintaining the texture of animal hair fibers. It is. [0005]

[Means to solve the problem]

As a result of extensive research into methods for modifying animal hair fibers, the present inventors found that animal hair fibers are treated with polyamino acids or polyamino acids and crosslinking agents, or animal hair fibers are reduced and then treated with polyamino acids and crosslinking agents. By processing animal hair fibers, scales maintain the animal hair-like texture characteristic of polyamino acids, have extremely excellent shrink-proofing properties, and provide additional properties such as hydrophobicity and strength and elongation. This discovery led to the present invention. That is, the present invention provides: (1) A method for modifying animal hair fibers, which comprises treating the animal hair fibers with a polyamino acid. (2) A method for modifying animal hair fibers, which comprises treating animal hair fibers with a polyamino acid and a crosslinking agent. (3) A method for modifying animal hair fibers, which comprises reducing the animal hair fibers and then treating them with a polyamino acid and a crosslinking agent. Consisting of [0006] The present invention will be described in detail below. The animal hair fiber used in the present invention refers to natural keratin fiber obtained from animals such as sheep, cashmere, mohair, Angora, camel, and albaca, and the fiber form may be animal hair alone or animal hair, etc. Sliver yarn, woven fabric, knitted fabric, non-woven fabric, etc. containing at least 15% or more. 557-[0007] The polyamino acid used in the present invention is an amino acid N-
It is obtained by decarboxylating a carboxylic anhydride (hereinafter referred to as NCA) in an organic solvent using an initiator. Representative examples include γ-methyl glutamate, γ-ethyl glutamate, y-benzyl glutamate, β-methyl aspartate, β-ethyl aspartate, β-benzylaspartate, valine, norvaline, leucine, isoleucine, norleucine, phenylalanine, methionine,
NCAs such as glycine and alanine may be used, and either their optically active forms or racemic forms may be used, and copolymers of two or more of these may be used, as well as polyamino acids obtained from NCA and an initiator. Furthermore, a copolymer obtained by a chain lengthening reaction using an isocyanate compound, a urethane prepolymer having isocyanate at the end, or the like may be used. Moreover, it can be made into a block or random copolymer with other polymers if necessary. However, in order to maintain the characteristics of polyamino acids, the amino acid composition of the copolymer is preferably 30% by weight or more, more preferably 60% by weight or more. [0008] Examples of the organic solvent used in the polymerization of NCA include N,N-dimethylformamide, formamide, N,N-dimethylacetamide, N-methylpyrrolidone, dioxane, tetrahydrofuran, diglyme, benzene, toluene, xylene, methyl ethyl ketone, etc. These solvents can be used alone or in combination. Further, if necessary, these organic solvents can be used for dilution after polymerization. [0009] The initiator used in the present invention is a compound having active hydrogen such as an amino group or a hydroxyl group, and examples thereof include ammonia, monomethylamine, dimethylamine, diethylamine, ethylenediamine, propylenediamine, hexamethylenediamine, 1,4-cyclohexanediamine,
0-phenylenediamine, p-phenylenediamine, toluene-2,4-diamine, 4. 4'-diphenylmethane diamine, polyoxypropylene diamine, N,
N-dimethylethylenediamine, N. N-dimethyl-1,3-propanediamine, isophoronediamine, 1,2-cyclohexanediamine, polysiloxane and polybutadiene having -class and secondary amino groups, JP-A-3-294578 (5) Amine compounds such as ene compounds, ethylene glycol, 1
, 3-butanediol, hexamethylene glycol, polyester diol, polysiloxane having a hydroxyl group,
Alcohols such as polybutadiene compounds, and furthermore, urethane prepolymers having amines at both ends can also be used. Further, a urethane prepolymer having isocyanate at both terminals and NCA can also be copolymerized using the above-mentioned initiator. [0010] The coelectric initiator is used in an amount of 0.01 to 10 mol%, preferably 0.1 to 2 mol%, based on NCA. Moreover, tertiary amines such as trimethylamine, triethylamine, and tributylamine can be used in combination as necessary. [0011] Examples of the crosslinking agent include isocyanate crosslinking agents and epoxy crosslinking agents as shown in the following formulas 1 to 10, and the amount added is 0.1 to 30% by weight based on the solid content of the polyamino acid.
, preferably 3 to 10% by weight. 559- [0012] 3 (CH2) GO 560- JP-A-3-294578 (6) [0013] JP-A-3-294578 (7) H H 561- JP-A-3-294578 (9) [0014] 0 [0015] In addition, sodium bisulfite, sodium sulfite, sodium pyrosulfite, sodium hydrosulfide, etc. can be used as the reducing agent used in the reduction treatment of animal hair fibers carried out in the present invention, and the amount used is 0.5 to 10% o.
, w, f, degree is appropriate. [0016] 562-JP-A-3-294578 (9) Furthermore, the method for modifying animal hair fibers in the present invention can be carried out as follows. 1) Animal hair fibers are immersed in a solution of polyamino acids (concentration: 0.1 to 10%), and a polyamino acid film is formed on the surface of the animal hair fibers by wet or dry coagulation, thereby modifying the animal hair fibers. 2) Add a crosslinking agent to a solution of polyamino acid (concentration: 0.1 to 10% by weight) at a concentration of 0.1 to 3% based on the solid content of the polyamino acid.
Animal hair fibers are immersed in the processing liquid added in an amount of 0% by weight, and a polyamino acid film is formed on the surface of the animal hair fibers by wet or dry coagulation, thereby carrying out a modification treatment. 3) After immersing the animal hair fiber in a solution with a crosslinking agent concentration of 0.1 to 30% by weight, it is further immersed in a polyamino acid solution, and 1
), the animal hair fiber is modified by forming a polyamino acid film on its surface. 4) After forming a polyamino acid film on the surface of the animal hair fiber,
Furthermore, it is immersed in a crosslinking agent solution and subjected to modification processing. 5) After reducing the animal hair fiber, it is subjected to modification processing using any of the methods 2) to 4). [0017] Although it can be processed by any of the methods 1) to 5), method 1) has excellent texture but is slightly inferior in shrink-proofing properties compared to methods 2) to 5). In case 4), the adhesion between the animal hair fiber and the polyamino acid film is slightly inferior to cases 2), 3) and 5). In addition, step 3) is a complicated process. Although the process is complicated, 5) has excellent shrink-proof properties, and 2) or 5) is preferably proposed. [0018]

[Effect]

When animal hair fibers are treated with polyamino acids, it is possible to coat the animal hair with a strong film while maintaining the animal hair-like texture that is unique to polyamino acids, giving animal hair excellent shrink-proofing properties and hydrophobic properties. can be granted. In addition, when treated with a polyamino acid and a crosslinking agent, the active hydrogen-containing functional groups of the polyamino acid or the active groups (-
NH2, -COOHl-OH, -3H) and that of the polyamino acid are cross-linked, making the polyamino acid film stronger and further improving its shrink-proofing properties. . In addition, by reducing animal hair before treating it with a polyamino acid and a crosslinking agent, the number of active groups in the animal hair fiber can be increased, and the crosslinking between the polyamino acid and the animal hair fiber can be strengthened. [0019]

【Example】

Hereinafter, the present invention will be explained in more detail with reference to Examples. Synthesis Example 1 Synthesis of Polyamino Acid A In a reaction apparatus equipped with a stirrer, 111 parts of γ-methyl-L-glutamate NCA (hereinafter abbreviated as MGNCA) and L-
Add 0 parts of NCAl of leucine, 660 parts of N,N-dimethylformamide (hereinafter abbreviated as DMF), and 1 part of dioxane.
50 parts were added and stirred at room temperature to completely dissolve. There, 2.11 parts of Jeffamine D-2000 (manufactured by Mitsui Texaco Chemical), 0.66 parts of triethylamine, and DMF
A solution of 60 parts of dioxane and 15 parts of dioxane was added dropwise at room temperature over 10 minutes. After stirring at that temperature for 30 minutes, the temperature was raised to 65° C. and further stirred at that temperature for 2 hours. The end point of the reaction was confirmed by IR that the absorption of NCA had disappeared. [0020] Synthesis Example 2 Synthesis of Initiator ■ (Urethane Prepolymer) In a reaction apparatus equipped with a stirrer, 500 parts of polytetramethylene glycol (manufactured by Sanyo Chemical Co., Ltd.) having an average molecular weight of 2000, 111 parts of inphorone diisocyanate, and dibutyltin dilaurate as a catalyst were added. Add 0.22 parts of a 10% toluene solution of
The temperature was raised to 120°C and stirred for 3 hours. Next, after cooling to 70° C., 611 parts of DMF was added to obtain a 50% solution (referred to as Ia) of the isocyanate at both ends. Next, 30% of diefermine D-2000 was added to a reaction apparatus equipped with a stirrer.
0 parts and 900 parts of DMF were added thereto, and 494 parts of the above Ia and 494 parts of DMF were added thereto at room temperature and stirred for 3 hours.
Initiator (2) having both terminal amines (amine value: 2980) was obtained. [0021] Synthesis Example 3 Initiator II (urethane prepolymer) In a reaction apparatus equipped with a stirrer, 500 parts of polyethylene glycol having an average molecular weight of 2000 (manufactured by Sanyo Ka564-V 3-294578 (,11)) and isophorone were added. 111 parts of diisocyanate and 0.22 parts of a 10% toluene solution of dibutyltin dilaurate as a catalyst were added, and the mixture was heated to 120°C and stirred for 3 hours. Next, after cooling to 70°C, 611 parts of DMF was added,
50% solution of isocyanate at both ends (referred to as II a)
I got it. Next, 100 parts of Diefamine D-2000 and 300 parts of DMF were added to a reaction apparatus equipped with a stirrer, and 185 parts of II a and 18 parts of DMF were added at room temperature.
5 parts was added and stirred for 3 hours, and both terminal amines (amine value 1
Initiator II of 490) was obtained. [0022] Synthesis Example 4 Synthesis of Polyamino Acid B In a reaction apparatus equipped with a stirrer, 94.1 parts of MGNCA and L-
Add 26.3 parts of phenylalanine NCA and add DM
490 parts of F and 180 parts of dioxane were added and stirred at room temperature to completely dissolve. Therein, 40 parts of initiator ■, 0.66 parts of triethylamine, 60 parts of DMF, 1 part of dioxane
5 parts of the solution were added dropwise over 10 minutes at room temperature. After stirring at that temperature for 30 minutes, the temperature was raised to 70℃, and at that temperature it was further stirred for 4 minutes.
Stir for hours. The end point of the reaction was determined by confirming that NCA absorption had disappeared by IR. [0023] Synthesis Example 5 Synthesis of polyamino acid C Polyamino acid C was obtained in the same manner as in the synthesis of polyamino acid B using initiator II. [0024] Synthesis Example 6 Synthesis of polyamino acids 91 parts of MGNCA and 26 parts of NCA of L-phenylalanine were added to a reaction apparatus equipped with a stirrer, and DMF 49
0 parts and 180 parts of dioxane were added and stirred at room temperature to completely dissolve. Polysiloxane with a hydroxyl group at the end (
Toshi Silicone SF8427) 2゜6 parts, triethylamine 0.66 parts, DMF 60 parts, dioxane 15
A portion of the solution was added dropwise over 10 minutes at room temperature. At that temperature 3
After stirring for 0 minutes, the temperature was raised to 70°C and further stirred at that temperature for 4 minutes.
Stir for hours. The end point of the reaction was confirmed by IR that the absorption of NCA had disappeared. [0025] Synthesis Example 7 Synthesis of Polyamino Acid E 565- JP-A-3-294578 (12) Part MGNCAIIO and 0 part NCAl of L-leucine were added to a reaction apparatus equipped with a stirrer, and 8 parts N-methylpyrrolidone was added.
00 parts were added and stirred at room temperature to completely dissolve. A solution of 0.16 parts of 1,2-cyclohexanediamine and 75 parts of N-methylpyrrolidone was added dropwise thereto at room temperature over 10 minutes. After stirring at that temperature for 30 minutes, the temperature was raised to 70° C. and further stirred at that temperature for 3 hours. The end point of the reaction was confirmed by IR that the absorption of NCA had disappeared. [0026] Example 1 The solutions of polyamino acids A-E obtained in Synthesis Examples 1 to 7 were dissolved in DMF.
The solution was diluted 5 times with water and used as a processing solution. Using a 12G flat knitting machine, pull two 2/48 count 100% wool stockinette yarns together and soak a 1,000-knit wool fabric with a cover factor of 0.41 in the above processing solution at room temperature for 5 minutes to achieve a pick-up rate of 110%. Squeeze it with a mangle, soak it in water at 25℃ for 3 minutes, then soak it in water for 6 minutes.
After immersing it in warm water at 0°C for 3 minutes, it was dried with hot air at 80°C for 30 minutes to form a polyamino acid film. These pre-shrunk products had good texture. [0027] The polyamino acid-treated silk fabric was evaluated for shrink resistance and hydrophobicity by the following method. The results are shown in Table 1. As a comparative sample, the same wool knitted fabric used for processing polyamino acids was soaked in 3.5% sodium dichloroisocyanurate (0°w, f) for 25 minutes at 20°C, and after washing with water, 10% sodium sulfite was added. .0%o,
A chlorinated wool knitted fabric obtained by adding w, f, and treating at 35°C for 15 minutes and washing thoroughly with water and Hercoset 57 (manufactured by Dick Bercules) after being chlorinated by the method described above. , polyamide epichlorohydrin resin) was taken at 20% O, W, F, sufficiently diluted, added to the treatment bath, treated at 40°C for 30 minutes, and then dry heat-treated at 80°C for 30 minutes. The results of the chlorinated/resin-treated wool knitted fabric are also shown. [0028] (1) Shrink resistance IWSTM31 Wescater test method was used to perform relaxation shrinkage of 7A, followed by 5A felt shrinkage, and washing resistance against shrinkage was evaluated from the dimensional change of the sample. (2) Hydrophobicity 566- JP-A-3-2945°78 (13) JISL1081.5.57. Based on Law B, 20
Hydrophobicity was evaluated by placing a 2.5 cm sample so that the lower end was just immersed in distilled water, and measuring the height (mm) of water rise due to capillary action after 10 minutes. [0029] From Table 1, the modified knitted fabric wet-processed with polyamino acids is as follows:
Even after repeated washing, the texture is good and there is almost no change in appearance, and it is clear that it has excellent washing durability and hydrophobicity. [0030] Example 2 The solutions of polyamino acids A-E obtained in Synthesis Examples 1 to 7 were dissolved in DMF.
The solution was diluted 5 times with water and used as a processing solution. The wool and silk fabric used in Example 1 was immersed in the above processing solution at room temperature for 5 minutes, squeezed with a mangle to achieve a pickup rate of 110%, and heated at 80°C for 30 minutes.
A polyamino acid film was formed by drying with hot air for several minutes. [0031] The polyamino acid-treated silk fabric was evaluated in the same manner as in Example 1 for washing resistance and shrink resistance and hydrophobicity. The results are shown in Table 1. From Table 1, it is clear that the silk fabric dry-modified with polyamino acids has a good texture and almost no change in appearance even after repeated washing, and has excellent washing durability and hydrophobicity. be. [0032] Example 3 The solution of polyamino acids A-E obtained in Synthesis Examples 1 to 7 was dissolved in DMF.
diluted 5 times with polyamino acid, and add a cross-linking agent such as Coronate EH (manufactured by Nippon Polyurethane), Coronate HL (manufactured by 8 polyurethane), Bunacol EX-301 (manufactured by Nagase Kasei), etc. at 5% based on the polyamino acid solid content. It was used as a processing fluid. The wool knitted fabric used in Example 1 was immersed in the above processing solution at room temperature for 5 minutes, squeezed with a mangle to achieve a pick-up rate of 110%, immersed in 25°C water for 3 minutes, and then immersed in 60°C hot water for 3 minutes. After soaking, it was dried with hot air at 80° C. for 30 minutes to form a polyamino acid film. These pre-shrunk products had good texture. [0033] The polyamino acid-treated silk fabric was evaluated for washing resistance and shrink resistance and hydrophobicity in the same manner as in Example 1. The results are shown in Table 2. Table 2 shows that the modified silk fabric wet-processed with polyamino acids and crosslinking agents has a good texture and almost no change in appearance even after repeated washing, and has excellent washing durability and hydrophobicity. That is clear. [0034] Example 4 The solutions of polyamino acids A-E obtained in Synthesis Examples 1 to 7 were dissolved in DMF.
A processing liquid was prepared by diluting the solution 5 times and adding Coronate EH as a crosslinking agent in an amount of 5% based on the solid content of the polyamino acid. The wool and silk fabric used in Example 1 was immersed in the above processing solution at room temperature for 5 minutes, squeezed with a mangle to give a pickup rate of 110%, and dried with hot air at 80° C. for 30 minutes to form a polyamino acid film. [0035] The polyamino acid-treated silk fabric was evaluated in the same manner as in Example 1 for washing resistance and shrink resistance and hydrophobicity. The results are shown in Table 3. Table 3 shows that the silk fabric dry-modified with polyamino acids and cross-linking agents has a good texture and almost no change in appearance even after repeated washing, and has excellent washing durability and hydrophobicity. That is clear. [0036] Example 5 The solutions of polyamino acids A-E obtained in Synthesis Examples 1 to 7 were dissolved in DMF.
A processing liquid was prepared by diluting the solution 5 times and adding Coronate EH as a crosslinking agent in an amount of 5% based on the solid content of the polyamino acid. The wool knitted fabric used in Example 1 was treated with 2.6% sodium pyrosulfite (reducing agent) 0.5% Tergitol TMN.
(Nonionic activator manufactured by UCC, USA) After immersing in an aqueous solution at room temperature for 5 minutes, washing with water and drying with hot air at 80°C. Next, it was immersed in the above processing solution at room temperature for 5 minutes, squeezed with a mangle to achieve a pickup rate of 110%, and immersed in water at 25°C for 3 minutes.
1 minute, then soaked in warm water at 60℃ for 3 minutes, then heated to 80℃ for 1 minute.
A polyamino acid film was formed by drying with hot air for 5 minutes. These shrink-proof processed products had good texture. [0037] The polyamino acid-treated silk fabric was evaluated for washing resistance and shrink resistance and hydrophobicity in the same manner as in Example 1. The results are shown in Table 4. Table 4 shows that the silk fabric wet-modified with polyamino acids and cross-linking agents after reduction treatment has a good texture and almost no change in appearance even after repeated washing, and has excellent washing durability. is clear. [0038] Example 6 The solution of polyamino acid B obtained in Synthesis Example 4 was diluted to 3% by weight with methyl ethyl ketone, and Coronate EH was added as a crosslinking agent.
A processing liquid was prepared by adding 1.33% of polyamino acid based on the solid content of the polyamino acid. Plain weave and twill weave fabrics made of 100% wool were treated with 2.6% sodium pyrosulfite (reducing agent) and 0.5% sodium pyrosulfite (reducing agent).
It was immersed in a 5% A 1copol 650 (nonionic activator manufactured by Allied Colloid, USA) aqueous solution at room temperature for 5 minutes, washed with water, and dried with hot air at 80°C. Then, it was immersed in the above processing liquid at 50°C for 5 minutes, and the pick-up rate was 50%.
The polyamino acid film was squeezed with a mangle, immersed in water at 25°C for 3 minutes, then in hot water at 60°C for 3 minutes, and then dried with hot air at 80°C for 15 minutes to form a polyamino acid film. These pre-shrunk products had good texture. [0039] Fabrics processed with polyamino acids in this way are
A practical washing test based on the L0217 103 method was conducted to evaluate shrink resistance. That is, first, wash for 5 minutes at 40°C, strong water flow, synthetic detergent concentration 2g/l, and bath ratio 1:30.
After performing relaxation shrinkage in a cycle of dehydration 30 seconds rinsing (at room temperature) for 2 minutes, dehydration 30 seconds, and flat drying, this washing cycle was performed 20 times as felt shrinkage, and the washing shrinkage resistance was evaluated from the dimensional change of the sample. . In addition, hydrophobicity was evaluated in the same manner as in Example 1. The results are shown in Table 5. Table 5 shows that the modified fabric treated with polyamino acids and a crosslinking agent after reduction treatment has a good texture and almost no change in appearance even after repeated washing, and has excellent washing durability and hydrophobicity. It is clear that [00401 Example 7 The polyamino acid solution obtained in Synthesis Example 1 was diluted 5 times with DMF, and Coronate EH was added as a crosslinking agent in an amount of 5% based on the solid content of the polyamino acid to prepare a processing liquid. O569 - JP 3-294578 (16) A sliver of No. 66 merino wool from Stralia is immersed in the above processing liquid for about 10 to 15 seconds, squeezed with a mangle to achieve a pick-up rate of 110%, and placed in the back washer's first
After washing with water at 20℃ in the tank and hot water at 60℃ in the second tank, 80℃
A polyamino acid film was formed by drying at ℃. Using the polyamino sharply separated varnish sliver obtained in this way, knitted yarn with a count of 2/60 was spun, and the performance of the polyamino acid-processed fiber was evaluated using the tests and testing methods described below. The results are shown in Table 6. (1) Shrink-proof property Same as Example 1. (2) 0.2 g of the hydrophobic sample was rolled into a ball with a diameter of 2 to 3 cm, and added to a 2 g/l neutral detergent (Daichi Kogyo Seiyaku Layer Monogen) solution at room temperature. Hydrophobicity was evaluated by floating it in an aqueous solution and measuring the time it took for it to sink into the solution. (3) Tensile strength and elongation of yarn: JIS L10 using a constant speed tension type tensioning machine.
Evaluation was made according to the test and test method of 75.7.5. [0041] From Table 6, the animal hair fiber obtained by the present invention has excellent shrink resistance while maintaining hydrophobicity, which is a characteristic of natural animal hair fiber, and also has excellent performance in fiber physical properties. is clear. [0042] Example 8 A sliver of Australian No. 66 merino wool was pretreated with 3.5% o of sodium dichloroisocyanur.
w, f, and soaked for 25 minutes at 25°C, washed with water, and then soaked in sodium sulfite 10. A chlorinated wool sliver obtained by adding O% o, w, f and treating at 35° C. for 15 minutes and washing thoroughly with water was processed in the same manner as in Example 5. The results are shown in Table 7. From Table 7, it is clear that the animal hair fibers obtained according to the present invention have a high level of shrink resistance, hydrophobicity close to natural animal hair fibers, and excellent properties such as fiber strength and elongation. 570- JP 3-294578 (17) [0043] Table 1 Physical property evaluation of polyamino Hatake 11 engineered wool knitted fabric 571- JP 3-294578 (1B) [0044] Table 2 Polyamino acid processed wool knitted fabric (wet processing) Physical properties of af number 5
72- [0045] -573- Ken J rail↑O [0046] -574- 11 open + 3-2; J4D/J? υノ[0047] -575- JP-A-3-294578 (21) JP-A-3-294578 (22) [0048] Table 6 Boriamino rjJJJI engineered wool sliver 'fV'
F(10576- [0049] [0050]

【Effect of the invention】

577- JP 3-29457803) -578- ■Kaihei 3-294578 (24)

Claims (3)

[Claims] 1. A method for modifying animal hair fibers, which comprises treating the animal hair fibers with a polyamino acid. 2. A method for modifying animal hair fibers, which comprises treating the animal hair fibers with a polyamino acid and a crosslinking agent. 3. A method for modifying animal hair fibers, which comprises reducing the animal hair fibers and then treating them with a polyamino acid and a crosslinking agent.