TH9710B - Artificial hair - Google Patents

Abstract

Artificial hair made of fibers containing poly acid derivatives. (Formula)Amino that is insoluble in water and alcohol and is represented by the following general formula (1)-(4) (chemical formula), where R in each formula (1)-(4) above is Ra, Rb and Rc1 are represented by the following formulas (5), (6) or (7), respectively (chemical formula), or are made from copolymer-containing polyaminoacurethane fibers. of the amino acid N-carboxyanhydride and polyurethane This copolymer was amided with organic diamines and organic amines with amino and mercapto groups or disulfide groups. and forming it in the form of fibers This artificial hair is dyed. The ability to maintain a natural, soft feel and yet flexible. have touch and excellent brushing, as well as a natural color, gloss and texture that is very similar to natural protein fibers.

Claims (13)

1. Artificial hair made from fibers composed of derivatives. Poly-a-amino acids that are insoluble in water and alcohol and can be represented by one of the following general formulas (1)-(4) (chemical formulas), where Z is an alkyl group with 1-6 carbon atoms, a tertiary amino alkyl group with 3-6 carbon atoms, or H and n is number 50-4000 (chemical formulas), where Z is an alkyl group with 1-6 carbon atoms, or H and n is number 50-4000 (chemical formulas), where Z is an alkyl group with 1-6 carbon atoms, or H and n+m is number 50-4000 (chemical formulas), where Z is an alkyl group with 1-6 carbon atoms, or H and n+m is number 50-4000, where R in each of the above-described formulas (1)-(4) is Ra, Rb or R1, which can be represented by the general formulas (5), (6) or (7) respectively, where each Ra and Rb is present in R more than 1 mol%. And the total amount of Ra and Rb in R is less than 55 mol% (chemical formula) where k is 1 or 2 (formula) is a number from 1-4 and each R1, R2 and R3 are H or alkyl groups with 1-4 carbon atoms (chemical formula) where k is 1 or 2 (formula) is a number from 1-4 and each R1 is H or alkyl groups with 1-4 carbon atoms and R2 is H or S(CH2)1 NR3 R4 (where j is a number from 1-4 and R3 and R4 are H or alkyl groups with 1-4 carbon atoms). Rb may be inserted into intramolecular and/or intermolecular crosslinking between each group using disulfide bonds or (chemical formula) where k is 1 or 2 and R is an alkyl group with 1-4 carbon atoms or a benzyl group. 2. Artificial hair as described in Reservience 1, with a core which is a homopolymer or copolymer of (i)-ester of glutamide or astartic acid. 3. Artificial hair as described in Reservion 1, having a core which is a copolymer of (i)-esters of glutamic acid and/or astartic acid with a neutral α-amino acid such as glycine, alamine/valine, norvaline, leucine, phenylalanine or methionine. 4. Artificial hair as described in Reservience 1, having a core which is a copolymer of (i)-esters of glutamic acid and/or astartic acid with two or more neutral α-amino acids. 5. Any of the claims in claims 1-4, where the poly-α-amino acid derivative has a polymerization degree of at least 100-2000. 6. Artificial hair as defined in any of Reputations 1-5, which can be obtained by amide reaction of a (co)polymer with a core as defined in any of Reputations 2-5 with an organic diamine, and the organic amine can be obtained by mercapto or disylphide groups. 7. Artificial hair made from polyamino acid ureathene fibers consisting of a core copolymer obtainable by copolymerization of polyurethane with isocyanate or terminal amino groups and an amino acid N-carboxyanhydride copolymer containing more than 2% by weight of an anhydride derivative, copolymerization followed by an amidation reaction with an organic diamine represented by the following formula (10), and an organic amine with mercapto or disulfide groups. Represented by the following general formulas (11) or (12) and formed into a filamentous form (chemical formula) where n is a number 1-4, R1, R2 and R3 are all H or alkyl groups with 1-4 carbon atoms (chemical formula) where m is a number 1-4 and R1 is H or alkyl groups with 1-4 carbon atoms and (chemical formula) where m and n are all numbers 1-4, and R1, R2 and R3 are all H or alkyl groups with 1-4 carbon atoms. 8. Artificial hair as per claim 7, whereby this polyaminoacid urethane fiber is obtained by amidation reaction of this backbone copolymer with an organic diamine represented by the general formula (10) and an organic amine represented by the general formula (11) or (12), and the product of this reaction is then formed into fibers. 9. Artificial hair as per claim 7, whereby this polyaminoacid urethane fiber is obtained by forming this backbone copolymer into a filamentous form and then subjecting the resulting fiber to an amication reaction with an organic diamine represented by the general formula (10) and an organic amine represented by the general formula (11) or (12). 10. Artificial hair as described in claim 8 or 9, whereby the polyurethane starting compound has amino groups at both ends. 11. Artificial hair as in claim 8 or 9, whereby the polyurethane starting compound has isocyanate groups at both ends. 12. Artificial hair as in claim 8 or 9, where the starting compound of this amino acid N-carboxyanhydride is amino acid (i)-alkyl N-carboxyanhydride. 13. The artificial hair as in claim 8 or 9, whereby the amino acid N-carboxyanhydride starting compound consists of an acidic (i)-alkyl N-carboxyanhydride and a neutral amino acid N-carboxyanhydride.