WO2007049561A1

WO2007049561A1 - Polyester-based artificial hair

Info

Publication number: WO2007049561A1
Application number: PCT/JP2006/321069
Authority: WO
Inventors: Toshiyuki Masuda
Original assignee: Kaneka Corporation
Priority date: 2005-10-28
Filing date: 2006-10-23
Publication date: 2007-05-03

Abstract

It is intended to provide a polyester-based artificial hair which sustains the fiber properties inherent to polyester fibers (for example, a high heat resistance and a high elongation), is excellent in transparency (color development performance) and curling characteristics, has a soft texture similar to the human hair and suffers from little hair tip tangling or flitting. This object can be achieved by providing a polyester-based artificial hair which is obtained by blending polyethylene terephthalate with polytrimethylene terephthalate at a specific ratio and then melt-spinning the obtained blend. By further using a bromine-containing flame retardant agent, it becomes possible to provide a polyester-based artificial hair which has flame retardancy in addition to the characteristics as described above.

Description

Specification

Polyester artificial hair

Technical field

The present invention relates to a polyester-based artificial hair formed from polyethylene terephthalate and polytrimethylene terephthalate.

Background art

In hair products such as wigs, hair wigs, furs, hair bands, doll hairs, human hair and artificial hair (modacrylic fibers, polyvinyl chloride and vinyl fibers) have been used in the past. Yes. However, the provision of human hair has become difficult, and the importance of artificial hair has increased. Modacrylic has been widely used as an artificial hair material due to its flame-retardant characteristics, but it was insufficient in terms of heat-resistant temperature. In recent years, as disclosed in Patent Document 1, artificial hair fibers using fibers mainly composed of polyester typified by polyethylene terephthalate having excellent heat resistance have been proposed.

[0003] However, when polyester fiber is used as an artificial hair material, the polyester fiber has high rigidity, and when it is made to have a fineness close to that of human hair, it becomes bristles that are as if a wire is implanted. In order to ensure moderate softness, it is necessary to use with a finer fineness. However, since the thickness differs from that of human hair, there is a difference in appearance from human hair.

[0004] In addition, when wearing and using a wig made of artificial hair, depending on the material used in the artificial hair, the artificial hair may be shrunk mainly into the hair tip, etc. (Bending of the hair ends) occurs. When such shrinkage, tandals and frits occur, the natural view of artificial hair is remarkably impaired, and at first glance it becomes clear that it is a wig. For this reason, wig wearers had to exchange force to periodically correct artificial hair.

[0005] Polyester fiber has the advantage of being able to be freely styled by hairdressing heat appliances such as hair irons due to its excellent heat resistance, and because it has rigidity as a characteristic of polyester, when it is made into a wig, The advantage of being easy to form a hairstyle with is there. However, there is a disadvantage that frizziness, tandals and frits are relatively easy to occur, and it was necessary to repair the frizziness and frits that occurred by using beauty heat appliances themselves or in a professional hair salon. .

[0006] On the other hand, such a crimp is relatively difficult to occur, and there is a nylon fiber as a fiber.

However, artificial hair using nylon fibers, due to the nature of nylon, once formed into a desired shape by heat treatment at the time of shipment from the factory, even if you later want to curl it, for example, it will once form. It cannot be changed. Nylon fibers have low rigidity, so that wigs using nylon fibers become cat hair (soft and not bulky hair), and it is not possible to form hairstyles that have a trendy mass among young people in recent years. It also has the problem of

[0007] Since vinyl chloride modacrylic has the property of being easily decomposed or altered by high heat, even if it shrinks due to aging, high heat cannot be used for the wig. However, if it is difficult to repair frizz, it has a problem.

[0008] As described above, artificial hair that is excellent in heat resistance and curling characteristics, has a soft tactile sensation similar to human hair, and is difficult to generate tandals and frits on the ends of hairs has yet been obtained.

Patent Document 1: International Publication WO2005Z010247

Disclosure of the invention

Problems to be solved by the invention

[0009] The object of the present invention is to solve the conventional problems as described above, maintain fiber properties such as heat resistance and high elongation of polyester fiber, have excellent curl characteristics, and have a soft touch close to human hair. It is intended to provide polyester-based artificial hair that is less prone to tandals and frits at the ends.

Means for solving the problem

[0010] The inventors of the present invention maintain the physical properties of ordinary polyester fibers such as heat resistance and high elongation by mixing polyethylene terephthalate and polytrimethylene terephthalate at a specific ratio and spinning them, and curl characteristics. It has been found that a polyester-based artificial hair that is excellent in hair, has a soft tactile feel similar to human hair, is less likely to cause tandals and frits on the ends of the hair, and is produced. In addition, bromine-containing flame retardants, antimony compounds, plasticizers and / or lubricants, organic By melt spinning a composition comprising fine particles and z or inorganic fine particles, polyester-based artificial hair having excellent flame retardancy and glossiness closer to human hair can be obtained while maintaining the above-mentioned properties. I found out.

That is, the present invention relates to the following artificial hair.

(1) Polyester artificial hair formed from polyethylene terephthalate (A) and polytrimethylene terephthalate (B), wherein the ratio of polyethylene terephthalate (A) to polytrimethylene terephthalate (B) is A) / (B) = 90Z10-40Z60 Polyester artificial hair, characterized in that

(2) Polyester artificial hair according to (1), having an intrinsic viscosity of polyethylene terephthalate (Α) of 0.6 to 1.2 dlZg.

(3) The polyester-based artificial hair according to (1), which has an intrinsic viscosity of polytrimethylene terephthalate (B) of 0.6 to 1.5 dlZg.

(4) A composition containing 5 to 30 parts by weight of a bromine-containing flame retardant (C) was further formed for a total of 100 parts by weight of polyethylene terephthalate (A) and polytrimethylene terephthalate (B) (1) ~ (3) V, polyester artificial hair according to any of the above.

(5) Bromine-containing flame retardant (C) is brominated aromatic flame retardant, bromine-containing phosphate ester flame retardant, brominated polystyrene flame retardant, brominated benzaryl acrylate flame retardant, brominated epoxy Group flame retardant, brominated phenoxy flame retardant, brominated polycarbonate flame retardant, tetrabromobisphenol A derivative, bromine-containing triazine compound and bromine-containing isocyanuric acid compound The polyester-based artificial hair according to (4), which is a flame retardant.

(6) formed from a composition containing 0.5 to LO parts by weight of antimony compound (D) with respect to a total of 100 parts by weight of polyethylene terephthalate (A) and polytrimethylene terephthalate (B), The polyester-based artificial hair according to any one of (4) to (5).

(7) The antimony compound (D) is at least one antimony compound selected from the group consisting of antimony trioxide, antimony tetraacid, antimony tetraacid, antimony pentoxide and sodium antimonate (6 ) The polyester-based artificial hair described.

(8) Mixture of polyethylene terephthalate (A) and polytrimethylene terephthalate (B) The polyester-based artificial hair according to any one of (1) to (7), formed from a composition further containing 0.05 to 3 parts by weight of the dispersant (E) with respect to 100 parts by weight in total.

(9) Dispersant (E) 1S Montanic acid wax, montanic acid ester wax, partial saponification Montanic acid wax, montanic acid metal salt, polyethylene wax, polyethylene oxide wax, polytetrafluoroethylene, fluorine The polyester-based artificial hair according to (8), which is a compound having at least one of a modified wax, polydimethylsilicone, and modified silicone resin.

(10) 0.1 to 5 parts by weight of organic fine particles (F) and Z or inorganic fine particles (G) are further added to 100 parts by weight of the total mixture of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). The polyester-based artificial hair according to any one of (1) to (9), which is formed from a composition.

(11) The polyester according to (10), wherein the organic fine particles (F) are at least one selected from the group force consisting of polyarylate, polyamide, fluorine resin, silicone resin, bridged acrylic resin, and crosslinked polystyrene. Artificial hair.

(12) The group consisting of inorganic fine particles (G) consisting of calcium carbonate, silicon oxide, silica Z melamine resin complex, titanium oxide, acid aluminum, zinc oxide, tanorek, kaolin, montmorillonite, bentonite, and my strength The polyester-based artificial hair according to (10), which is at least one kind selected for its strength.

The invention's effect

[0012] According to the present invention, the fiber properties such as heat resistance and high elongation of the polyester fiber are maintained, excellent in the roll characteristics, soft touch close to human hair, Polyester-based artificial hair that is unlikely to occur can be obtained. The polyester-based human hair of the present invention also has excellent transparency (color development)!

BEST MODE FOR CARRYING OUT THE INVENTION

[0013] The polyester-based artificial hair of the present invention has polyethylene terephthalate as the polyester.

A fiber obtained by melt spinning a mixture of (A) and polytrimethylene terephthalate (B). In the present invention, polyethylene terephthalate is used as a polyester by using a mixture of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). A soft texture and a tactile sensation can be obtained from the low elastic modulus of polytrimethylene terephthalate (B). In addition, it is possible to suppress the occurrence of tandals and frits on the end of artificial hair due to the excellent recovery rate of polytrimethylene terephthalate (B).

[0014] In the present invention, the ratio of polyethylene terephthalate (A) to polytrimethylene terephthalate (B) is preferably (A) Z (B) = 90Z10-40Z60, more preferably 85 15-45 to 55 by weight ratio. 80 to 20 to 50 to 50 is more preferable. If the ratio of the polytrimethylene terephthalate Ichito (beta) is less than 10 weight ^_0/0, due to the high modulus of polyethylene terephthalate, comprising soft touch is hardly expressed. Also, due to the low elastic recovery rate of polyethylene terephthalate, when used as artificial hair, there is a tendency for frits and tandals to occur. Further, when the ratio of polytrimethylene terephthalate (beta) is more than 60 weight ^_0/0, a tendency that the reduction of heat resistance, fusion may occur in the fibers during ironing set force Lumpur holding force decreases There is.

[0015] Polyethylene terephthalate (Α) and polytrimethylene terephthalate in the present invention

(Ii) is a copolymerized polyester mainly containing polyethylene terephthalate or polytrimethylene terephthalate (containing 80 mol% or more) in addition to polyethylene terephthalate and polytrimethylene terephthalate, and containing a small amount of a copolymer component. Is also included.

[0016] Examples of the copolymer component include isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, para-phenolic dicarboxylic acid, trimellitic acid, pyromellitic acid, succinic acid, glutaric acid, adipic acid, speric acid, and azelain. Polycarboxylic acids such as acid, sebacic acid, dodecanedioic acid, rubonic acid, derivatives thereof, dicarboxylic acids including sulfonic acid salts such as 5-sodium sulfoisophthalic acid, dihydroxyethyl 5-sodium sulfoisophthalate, derivatives thereof, Ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,4-cyclohexanedimethanol, diethylene glycol, polyethylene glycol , Trimethylol mouthpiece, pentaerythrito Le, 4-hydroxybenzoic acid, ε- force Purorataton the like. [0017] The copolyester is usually prepared by reacting a polymer of terephthalic acid and Z or its derivative (for example, methyl terephthalate) as a main component with an alkylene glycol and containing a small amount of a copolymer component. Although it is preferable to produce it by the stability and ease of operation, a small amount of co-polymer is added to the mixture of the main terephthalic acid and Z or its derivative (for example, methyl terephthalate) and alkylene glycol. The polymerization component may be produced by polymerizing a monomer or oligomer component.

[0018] The copolymer polyester is not particularly limited in the way of copolymerization, in which the copolymer component is polycondensed to the main chain and Z or side chain of polyethylene terephthalate or polytrimethylene terephthalate as a main component. There is no.

The intrinsic viscosity of the polyethylene terephthalate (A) used in the present invention is preferably 0.6 to 1.2 dlZg, more preferably 0.65-1.ldlZg, more preferably 0.7 to 1. OdlZg. Even better. When the intrinsic viscosity of polyethylene terephthalate (A) is less than 0.6 dlZg, the mechanical strength tends to decrease, and when it comes into contact with a flame, it tends to melt and drip easily. When the intrinsic viscosity of polyethylene terephthalate (A) exceeds 1.2 dl / g, yarn breakage tends to occur during melt spinning, and the touch tends to be hard.

[0020] The intrinsic viscosity of the polytrimethylene terephthalate (B) used in the present invention is 0.6 to 1.5 dlZg, more preferably 0.7 to 1.4 dlZg, and still more preferably 0.8 to 1. It is 3dlZg. When the intrinsic viscosity of polytrimethylene terephthalate (B) is less than 0.6 dlZg, the mechanical strength tends to decrease, or when it comes into contact with a flame, it tends to melt and drip easily. When the intrinsic viscosity of polytrimethylene terephthalate (B) exceeds 1.5 dlZg, yarn breakage tends to occur during melt spinning, and the tactile sensation tends to become hard.

[0021] In the present invention, for the purpose of improving safety when used as artificial hair, it is preferable to add flame retardant to impart flame retardancy. In this case, it is preferable to use a bromine-containing flame retardant (C) as the flame retardant used because it can impart excellent flame retardancy to artificial hair. The bromine-containing flame retardant (C) used in the present invention is not particularly limited, and any bromine-containing flame retardant generally used can be used. [0022] Specific examples of the bromine-containing flame retardant (C) in the present invention include bromine-containing phosphate ester flame retardant, brominated polystyrene flame retardant, and fluorination, which can impart excellent flame retardancy to artificial hair. Benzyl acrylate flame retardant, brominated epoxy flame retardant, brominated phenoxy resin flame retardant, brominated polycarbonate flame retardant, tetrabromobisphenol A derivative, bromine-containing triazine compound, bromine-containing isocyanuric acid Bromine-containing phosphate ester flame retardant, brominated epoxy flame retardant, brominated phenoxy resin, which can impart excellent fiber properties and heat resistance to compounds and artificial hair, and can provide excellent processing stability during fiber production -Based flame retardants.

[0023] More specific specific examples of the bromine-containing flame retardant (C) in the present invention include, for example, pentabromotoluene, hexabromobenzene, decabromodiphenyl, decabromodiphenyl ether, and bis (tribromophenoxy). Bromine-containing phosphate esters such as ethane, tetrabromophthalic anhydride, ethylene bis (tetrabromophthalimide), ethylene bis (pentabromophenol), otatabromotrimethylphenolindane, tris (tribromoneopentyl) phosphate, bromine Polystyrenes, brominated polybenzyl acrylates, fluorinated epoxy oligomers, brominated phenoxy resins, brominated polycarbonate oligomers, tetrabromobisphenol A, tetrabromobisphenol A-bis (2,3-dibu Lomopropyl ether), Tetrabromobisphenol A-bis (aryl ether), tetrabromobisphenol A-bis (hydroxyethyl ether) and other tetrabromobisphenol A derivatives, and bromine-containing triazine compounds such as tris (tripromophenoxy) triazine And bromine-containing isocyanuric acid compounds such as tris (2,3-dibromopropyl) isocyanurate. These may be used alone or in combination of two or more.

[0024] The amount of bromine-containing flame retardant (C) used in the present invention is preferably 5 to 30 parts by weight with respect to a total of 100 parts by weight of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). 25 to 5 parts by weight is more preferred 7 to 20 parts by weight is even more preferred. If the amount of bromine-containing flame retardant (C) used is less than 5 parts by weight, the flame retardant effect tends to be difficult to obtain, and if it exceeds 30 parts by weight, the mechanical properties, heat resistance, and drip resistance of the resulting fiber There is a tendency to damage. [0025] In the present invention, the flame retardancy is expressed by including the bromine-containing flame retardant (C) in the composition, but the flame retardant is expressed by including the antimony compound (D). The effect can be remarkably improved. The antimony compound (D) used in the present invention is not particularly limited. Specific examples of the antimony compound (D) include antimony triacid, antimony tetraacid, antimony tetraacid, antimony pentaacid, sodium antimonate and the like. Of these, sodium antimonate is preferred from the viewpoint of the spinnability of the composition.

[0026] The average particle size of the antimony compound (D) in the present invention is preferably 0.015 to 15 μm.

0.1 to 12 / z m is more preferable 0.2 to: LO / z m is more preferable. The antimony compound (D) in the present invention may be surface-treated with an epoxy compound, a silane compound, an isocyanate compound, a titanate compound, or the like, if necessary.

[0027] The amount of antimony compound (D) used in the present invention is preferably 0.5 to: LO parts by weight with respect to 100 parts by weight of the total of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). 6-9 parts by weight is more preferred 0.7-7 parts by weight is even more preferred. When the amount of the antimony compound (D) used is less than 0.5 parts by weight, the improvement of the flame retardancy tends to be small, and when it exceeds 10 parts by weight, the processing stability, appearance and transparency are low. There is a tendency to be damaged.

[0028] In the present invention, the dispersion state of the antimony compound (D) is improved by further containing the dispersant (E) in the composition, so that the spinning stability is improved and the fiber surface is protected. Disappears. Further, the dispersant (E) can impart slipperiness to the fiber surface, and a filament with good combing can be obtained. As the dispersant (E) used in the present invention, a plasticizer or a lubricant can be used. The plasticizer or lubricant is not particularly limited, and any plasticizer or lubricant can be used as long as it is generally used.

[0029] Specific examples of the dispersant (E) in the present invention include, for example, phthalates, adipates, polyester plasticizers, acrylic oligomer plasticizers, montanic waxes, and montanic esters. Wax, partially saponified montanic acid wax, metal montanate, hydrocarbon wax, ethylene acetate butyl copolymer wax, ethylene oxide butyl acetate copolymer wax, polyethylene wax, polyethylene oxide wax, polypropylene Wax, acrylic polymer wax, amide wax, amide modification Examples thereof include wax, polytetrafluoroethylene, fluorine-modified wax, fatty acid ester, glycerin ester, sorbitan ester, fatty acid amide, aliphatic polyester, polydimethyl silicone, and modified silicone resin.

[0030] Among these, montanic acid-based wax, montanic acid ester-based wax, partially-kenned montanic acid-based wax, montanic acid metal salt, polyethylene-based wax, polyethylene oxide-based wax, polytetrafluoroethylene, fluorine-modified Wax, polydimethylsilicone, and modified silicone resin have an influence on fiber properties such as dispersibility, flame retardancy, and heat resistance of antimony compounds. These compounds may be used alone or as a mixture of two or more.

[0031] The amount of the dispersant (E) used in the present invention is preferably 0.05 to 3 parts by weight with respect to 100 parts by weight of the total of polyethylene terephthalate (A) and polytrimethylene terephthalate (B), and 0.1 to 0.1 parts by weight. ~ 2.5 parts by weight is more preferred 0.15 to 2 parts by weight is even more preferred. When the amount of the dispersant (E) used is less than 0.05 parts by weight, the antimony compound particles (D) are partially agglomerated, and there is a tendency that yarn breakage occurs during the spinning process and the tactile feel of the fiber surface is reduced. There is. If it exceeds 3 parts by weight, the spinning stability will be lowered and yarn breakage will occur, and mechanical properties, heat resistance, flame resistance and drip resistance will tend to be impaired.

[0032] The fiber for flame-retardant polyester-based artificial hair of the present invention further comprises organic fine particles in the composition.

By mixing (F) and Z or inorganic fine particles (G), fine protrusions can be formed on the surface of the resulting fiber, and the gloss and gloss of the fiber surface can be adjusted.

[0033] The organic fine particles (F) in the present invention may be any organic resin having a structure that is incompatible with or partially incompatible with polyethylene terephthalate (A) and Z or polytrimethylene terephthalate (B). Can be used. Examples of the organic fine particles (F) include polyarylate, polyamide, fluorine resin, silicone resin, crosslinked acrylic resin, and crosslinked polystyrene. These may be used alone or in combination of two or more. Among these, cross-linked polyester particles and cross-linked acrylic particles having excellent heat resistance and dispersibility that can stably impart a gloss adjusting effect are preferred.

[0034] The inorganic fine particles (G) used in the present invention include polyethylene terephthalate (A) and Z or polytrimethylene terephthalate (B Those having a refractive index close to that of) are preferred. Examples of the inorganic fine particles (G) include calcium carbonate, silicon oxide, titanium oxide, aluminum oxide, zinc oxide, talc, strong iron, montmorillonite, bentonite, and my strength. These may be used alone or in combination of two or more. Among these, particles close to a spherical shape are preferably composite particles mainly composed of silicon oxide and acid hydride, which have a higher gloss adjustment effect. The inorganic fine particles (G) used in the present invention may be surface-treated with an epoxy compound, a silane compound, an isocyanate compound, a titanate compound, or the like, if necessary.

[0035] The average particle size of the organic fine particles (F) and Z or inorganic fine particles (G) used in the present invention is preferably 0.1 to 15 m force, more preferably 0.2 to 10 m force, and 0.5 to 8 111 Power ^ Preferred さらに. When the average particle size of organic fine particles (F) and Z or inorganic fine particles (G) is smaller than 0.1 μm, the gloss adjustment effect tends to be small. There is a tendency to break down or to break yarn.

[0036] The amount of organic fine particles (F) and Z or inorganic fine particles (G) used in the present invention is not particularly limited, but a total of 100 parts by weight of polyethylene terephthalate (A) and polytrimethylene terephthalate HB). On the other hand, 0.1 to 5 parts by weight is preferable, 0.2 to 3 parts by weight is more preferable, and 0.3 to 2 parts by weight is more preferable. When the amount of organic fine particles (F) and Z or inorganic fine particles (G) used is less than 0.1 part by weight, the fine protrusions formed on the fiber surface are reduced, and the gloss adjustment effect on the fiber surface tends to be small. When the amount exceeds 5 parts by weight, appearance, hue, and color developability tend to be impaired.

[0037] Polyester artificial hair obtained by the present invention includes, for example, polyethylene terephthalate (A), polytrimethylene terephthalate (B), bromine-containing flame retardant (C), antimony compound (D), dispersant (E ), Organic fine particles (F), inorganic fine particles (G), etc. are dry blended, and then the polyester composition obtained by melt kneading using various general kneaders is used with a single screw extruder. And can be obtained by melt spinning.

[0038] Examples of the kneader used in the production of the rosin composition include, for example, a single screw extruder, a twin screw extruder, a roll, a Banbury mixer, and an ader. Among these, a twin screw extruder is preferable from the viewpoint of adjusting the kneading degree and ease of operation. [0039] For example, using a twin screw extruder with a screw diameter of 45 mm, the barrel set temperature is 260 to 300.

The mixture is melt-kneaded at a discharge temperature of 50 to 150 kgZhr and a screw rotation speed of 150 to 200 rpm, the strand is taken out of the die, water-cooled, and then pelletized using a strand cutter to obtain the polyester-based artificial hair of the present invention. A composition to be produced can be obtained.

[0040] The polyester-based artificial hair of the present invention has, for example, a temperature of 270 to 310 ° C such as an extruder, a gear pump, and a die, melt-spun, and passes the spun yarn through a heating tube, and then has a glass transition point. It can be obtained by cooling to below and taking it off at a speed of 50 to 5000 mZ. It is also possible to control the fineness by cooling the spun yarn in a water tank containing cooling water. The temperature and length of the heating cylinder, the temperature and amount of the cooling air, the temperature of the cooling water tank, the cooling time, and the take-up speed can be appropriately adjusted according to the discharge amount and the number of holes in the base.

[0041] The polyester-based artificial hair of the present invention comprises polyethylene terephthalate (A) and polytrimethylene terephthalate (B), bromine-containing flame retardant (C), antimony compound (D), dispersant (E ), Organic fine particles (F), inorganic fine particles (G), etc. are dry blended using a twin screw extruder equipped with a gear pump and a spinning nozzle or a single screw extruder using a screw having kneading ability. The resin composition can be obtained by melt spinning without taking out the resin composition.

[0042] In the present invention, the obtained spun yarn is heat-stretched. Stretching is a two-step method in which the spun yarn is wound and then stretched, and continuously stretched without winding. Any of direct spinning and drawing methods may be used. Hot stretching is performed by a single-stage stretching method or a multi-stage stretching method having two or more stages. As a heating means in the heat stretching, a heating roller, a heat plate, a steam jet device, a hot water tank, or the like can be used, and these can be used together as appropriate.

[0043] The polyester-based artificial hair of the present invention may contain various additives such as a heat-resistant agent, a light stabilizer, a fluorescent agent, an antioxidant, an antistatic agent, and a pigment as necessary.

[0044] The fineness of the polyester-based artificial hair of the present invention obtained as described above is usually 10 to: LO Odtex, more preferably 20 to 90 dtex. Suitable for artificial hair. In addition, the artificial hair has heat resistance capable of using a beauty heat instrument (hair iron) at 160 to 200 ° C., and preferably has self-extinguishing properties that are difficult to ignite. [0045] The polyester-based artificial hair of the present invention can be used after being colored by dyeing or priming. When coloring by dyeing, it can be dyed under the same conditions as ordinary polyester fibers. Moreover, in the case of original attachment, an original attachment fiber can be obtained by melt-kneading the pigment used for normal polyester fiber. As the pigment, dye, auxiliary agent and the like used for dyeing, those having good weather resistance and flame retardancy are preferable.

[0046] The polyester-based artificial hair of the present invention is excellent in curl setting using a beauty heat instrument (hair iron) and excellent in curl retention. Moreover, the surface of the fiber is moderately erased by the irregularities on the fiber surface, and can be used as artificial hair. In addition, oil agents such as fiber surface treatment agents and softeners can be used to provide a feeling of touch and texture, making it closer to human hair.

[0047] The flame-retardant polyester artificial hair of the present invention may be used in combination with other artificial hair materials such as modacrylic fiber, polysalt fiber fiber, nylon fiber, etc., or in combination with human hair. May be.

Example

[0048] Next, the present invention will be more specifically described based on examples, but the present invention is not limited thereto. The characteristic value measurement method is as follows.

[0049] (Strength and elongation)

The tensile strength and elongation of the filaments were measured using a tensile / compression tester (INTESCO Model 201, manufactured by Intescone Earth). A 20 mm long sample was prepared by taking one filament with a length of 40 mm, sandwiching 10 mm of both ends of the filament with a backing paper (thin paper) to which a double-sided adhesive tape was applied, and air-dried overnight. A sample was attached to the tester, and the test was performed at a temperature of 24 ° C, humidity of 80% or less, an initial load of lZ30gF X fineness (denier), and a tensile speed of 20mmZ, and the tensile strength and elongation at break were measured. The test was repeated 10 times under the same conditions, and the average value was defined as the filament elongation.

[0050] (10% stretch elastic recovery)

Using a tensile and compression tester (INTESCO Model 201, manufactured by Intescone Earth), the 10% stretch elastic recovery rate of the filament was measured. Take one filament with a length of 40 mm, and sandwich 10 mm of both ends of the filament with a backing paper (thin paper) to which a double-sided tape with glue is attached. A 20 mm long sample was made by air drying overnight. A sample was mounted on the testing machine, and after 10% elongation at a temperature of 24 ° C, humidity of 80% or less, and a tensile speed of 200 mmZmin, it was immediately recovered at the same speed. Tensile recovery curve force The elongation (B%) with respect to the initial length of the sample when it became the same as the initial load at the time of recovery was read, and the 10% elongation elastic recovery rate was obtained by the following formula. The 10% stretch elastic recovery rate can be evaluated as an index of the likelihood of the occurrence of frits at the ends of the hair, and the greater the stretch elastic recovery rate, the less likely that the frits occur.

10% elastic recovery (%) = {(10-B) / 10} X 100

[0051] (Heat shrinkability)

The thermal contraction rate of the filament was measured using SSC5200H thermal analysis TMAZSS150C manufactured by Seiko Denshi Kogyo. Ten filaments were tied to the fixture so that the distance between chucks was 10 mm. 5. A 55mgZdtex load was applied, the heat shrinkage rate was measured in the range of 30 to 280 ° C at a temperature increase rate of 3 ° CZ, and the heat shrinkage rate at 180 ° C was defined as the heat shrinkage rate.

[0052] (Transparency)

A tow filament having a length of 30 cm and a total fineness of 100,000 dtex was visually evaluated under sunlight.

◎: Transparency, color depth (brightness)

〇: There is a slight opacity, but the color depth (brightness) decreases.

Δ: Opaque (cloudy), slightly reduced color depth (brightness)

X: Opaque and no color depth

[0053] (feel)

A sensory evaluation was performed by a professional hairdresser and evaluated in three stages.

◎: Very soft texture equivalent to human hair

◯: A soft texture similar to human hair

Δ: Slightly harder texture than human hair

X: Harder than human hair

[0054] (Combination street)

A comb (made by Delrin Sabah) was passed through a tow filament with a length of 30 cm and a total fineness of 100,000 dtex, and the ease of combing was evaluated.

A: No resistance at all (very light) 〇: Almost no resistance (light)

Δ: Some resistance (heavy)

X: There is a lot of resistance, or there are tandals and fritzs, and you can pull along the way

[0055] (Flame retardancy)

A filament with a fineness of about 50 dtex was cut into a length of 150 mm, 0.7 g was bundled, one end was sandwiched between clamps, fixed to a stand, and hung vertically. A 20 mm flame was indirectly flamed for 3 seconds in a fixed filament with an effective length of 120 mm and burned to evaluate the combustibility.

Combustion quality

◎: Afterflame time 0 seconds (Do not ignite!)

〇: After flame time is less than 3 seconds

: After flame time 3 to 10 seconds

X: Afterflame time is 10 seconds or more

[0056] (Iron set property)

It is an indicator of curling set by hair iron and curling shape retention. The filament was pinched between hair irons heated to 180 ° C and preheated 3 times. At this time, fusion between filaments, combing, filament shrinkage, and thread breakage were visually evaluated. Next, wind the preheated filament on the hair iron, hold it for 10 seconds, and pull out the iron. Evaluate the ease of removal at this time (rod-out property) and the retention of curl when it is removed.

Fusion between filaments

○: No fusion

Δ: Slight fusion

X: Fusion

Crimp Z thread breakage

○: No shrinkage or thread breakage

Slightly curled and has thread breakage

X: There is a shrinkage or thread breakage

Rod out ○: Iron rod comes out smoothly

Δ: Slightly difficult to remove iron rod ヽ

X: Iron rod is hard to come off

—Set characteristics—

○: The shape of the curl is maintained

Δ: Slightly collapsed curl shape

X: The shape of the curl is broken

[0057] (Tangled hair end)

Bundle one hand of a tow filament with a length of 30 cm and a total fineness of 100,000 dtex, hold it with your hand, shake it ten times with strength that makes the tow fall apart, pass the comb (made of Delrin resin), The condition (ease of combing) was evaluated.

◎: The comb can be passed through without the pulling force of the hair (most resistance! /)

〇: The hair tip is pulled slightly (there is a little resistance)

△: The pulling force of the hair tip can pass through the comb (there is resistance)

X: The tip of the hair is pulled and the comb does not pass

[0058] The raw materials used in the examples and comparative examples are as follows.

Polyethylene terephthalate (A):

'Polyethylene terephthalate, manufactured by Mitsubishi Chemical Corporation, BK-2180

Polytrimethylene terephthalate (B):

'Polytrimethylene terephthalate, manufactured by Shell, Conoleterra CP509200

Polybutylene terephthalate:

'Polybutylene terephthalate, manufactured by Mitsubishi Engineering Plastics Co., Ltd., Novade Yuran 5010R5

Bromine-containing flame retardant (C):

• Brominated epoxy flame retardant, Sakamoto Pharmaceutical Co., Ltd., SR-T20000

Antimony compounds (D):

'Sodium antimonate, manufactured by Nippon Seiko Co., Ltd., SA—A, average particle size 2.4 m Dispersant (E): 'Montanate ester wax, manufactured by Clariant Japan KK, LicowaxE inorganic fine particles (F):

'Fine silica, manufactured by Fuji Silicon Chemical Co., Ltd., Silicia 310P, average particle size 2. Ι μ να Pigment:

'Pigment master batch, carbon black 20wt%, manufactured by Dainichi Seisaku Kogyo Co., Ltd., PESM2 2367BLACK

[0059] (Examples 1 to 12)

The composition shown in Table 1 is dried to a water content of lOOppm or less, dry blended, supplied to a twin-screw extruder (manufactured by Nippon Steel Co., Ltd., TEX44), and melted at a barrel set temperature of 260 ° C. After melt-kneading and pelletizing, it was dried to a water content of lOOppm or less. Next, using a melt spinning machine (SV30, manufactured by Shinko Machinery Co., Ltd.), the molten polymer is discharged from a spinneret having a rectangular cross-section nozzle hole with a barrel setting temperature of 260 ° C and an aspect ratio of 1.4: 1. Then, it was air-cooled with a cooling air of 20 ° C. and wound at a speed of lOOmZ to obtain an undrawn yarn. The obtained unstretched yarn was stretched 4 times using a heat roll heated to 85 ° C, heat-treated using a heat roll heated to 190 ° C, wound at a speed of 30 mZ, and A polyester fiber (multifilament) having a fiber fineness of about 65 dtex was obtained.

To the obtained polyester fiber, KWC-Q (Random copolymer polyether of ethylene oxide propylene oxide; manufactured by Maruhishi Oil Chemical Co., Ltd.) Z Carochemical 29 (cationic surfactant) ; Manufactured by Maruhishi Oil & Chemical Co., Ltd.) = 0/20/0. Prepare an aqueous solution containing 0.88% of each pure so that it becomes 20% omf, and tow filament with a total fineness of 100,000 dtex, The solution was adhered so that the liquid content was 25% with respect to the tow weight, and dried at 120 ° C. for 10 minutes using a hot air dryer. Using the obtained fibers, the results of evaluating the strength, 10% elongation, elastic recovery, heat shrinkability, transparency, touch, combing, flame retardancy, tandals of hair ends, and eye opening properties are shown. Table 1 shows.

[0060] [Table 1]

[0061] (Comparative Examples 1 to 7)

Polyester fibers (multifilaments) having a single fiber fineness of around 65 dtex were obtained in the same manner as in the Examples with compositions having the blending ratios shown in Table 1. Using the obtained fiber,

Table 1 shows the results of evaluation of 10% stretch elastic recovery, heat shrinkability, transparency, touch, combing, flame retardancy, tidal properties of hair ends, and iron set properties. As shown in Table 1, in contrast to the comparative example, in the example, by using polytrimethylene terephthalate, it has excellent transparency (color development), curl characteristics, and soft touch close to human hair, It was confirmed that tundals and frits on the hair tips were unlikely to occur. Therefore, the artificial hair fiber of the present invention has a soft tactile sensation similar to human hair while maintaining the mechanical properties and thermal properties of polyester, compared to conventional artificial hair fibers, and the tandals of the hair ends. It was confirmed that it can be effectively used as polyester-based artificial hair, which is less likely to cause frits.

Industrial applicability

[0062] The polyester-based artificial hair of the present invention maintains the physical properties of polyester fibers such as heat resistance and high elongation, is excellent in transparency (color development) and curling characteristics, and has a soft touch close to human hair. , Tendall of hair ends, Fritz is unlikely to occur. Therefore, it is useful in the artificial hair industry.

Claims

The scope of the claims

[1] Polyester artificial hair formed from polyethylene terephthalate (A) and polytrimethylene terephthalate (B), wherein the specific force mass ratio of polyethylene terephthalate (A) and polytrimethylene terephthalate (B) is (A) Polyester artificial hair, characterized in that Z (B) = 90Z10-40Z60.

[2] The polyester-based artificial hair according to claim 1, which has an intrinsic viscosity of polyethylene terephthalate (Α) of 0.6 to 1.2 dlZg.

[3] The polyester-based artificial hair according to claim 1, which has an intrinsic viscosity of polytrimethylene terephthalate (B) of 0.6 to 1.5 dlZg.

[4] Claims formed from a composition containing 5 to 30 parts by weight of a bromine-containing flame retardant (C) with respect to a total of 100 parts by weight of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). The polyester-based artificial hair according to any one of 1 to 3.

[5] Bromine-containing flame retardant (C) is a brominated aromatic flame retardant, bromine-containing phosphate ester flame retardant, brominated polystyrene flame retardant, brominated benzaryl acrylate flame retardant, brominated At least selected from the group consisting of a poxy flame retardant, a brominated phenoxy flame retardant, a brominated polycarbonate flame retardant, a tetrabromobisphenol A derivative, a bromine-containing triazine compound and a bromine-containing isocyanuric acid compound. The polyester-based artificial hair according to claim 4, which is a kind of flame retardant.

[6] It is formed from a composition containing 0.5 to 10 parts by weight of an antimony compound (D) with respect to 100 parts by weight of the total of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). Item 5. The polyester-based artificial hair according to any one of Items 4 to 5.

[7] The antimony compound (D) 1S is at least one antimony compound selected from the group consisting of 1S antimony trioxide, 1 antimony tetraacid, antimony pentoxide, and sodium antimonate. The polyester-based artificial hair described.

[8] A composition comprising 0.05 to 3 parts by weight of dispersant (E) with respect to 100 parts by weight of the total mixture of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). Item 8. The polyester-based artificial hair according to any one of Items 1 to 7.

[9] Dispersant (E) 1S Montanic acid wax, montanic acid ester wax, partially saponified rubber An tannic acid-based wax, a metal salt of montanic acid, a polyethylene-based wax, a polyethylene oxide-based wax, a polytetrafluoroethylene, a fluorine-modified wax, a polydimethylsilicone, and a modified silicone resin. Item 9. Polyester artificial hair according to Item 8.

[10] 0.1 to 5 parts by weight of organic fine particles (F) and Z or inorganic fine particles (G) are further added to 100 parts by weight of the total mixture of polyethylene terephthalate (A) and polytrimethylene terephthalate (B). The polyester artificial hair according to any one of claims 1 to 9, wherein the composition is formed.

[11] The organic fine particles (F) according to claim 10, wherein the organic fine particles (F) are at least one selected from the group consisting of polyarylate, polyamide, fluorine resin, silicone resin, crosslinked acryl resin and crosslinked polystyrene. Polyester artificial hair.

[12] Inorganic fine particles (G) are composed of calcium carbonate, silicon oxide, silica Z melamine resin complex, acid titanium, acid aluminum, dumbbell, talc, kaolin, montmorillonite, bentonite and my strength 11. The polyester-based artificial hair according to claim 10, wherein the group strength is at least one selected.