JP2000072970A - Thermoplastic resin composition and hair brush formed thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a compsn. which acts on a part of a human body, such as the head skin or hair, and provides a pleasant feeling in terms of health by incorporating a thermoplastic resin and a powdery tourmaline ore, each in a specified amt., into the same. SOLUTION: This compsn. contains 100 pts.wt. thermoplastic resin, 0.5-20 pts.wt. tourmaline ore powder having a particle size of 100 μm or lower, and suitable amts. of an antioxidant, a heat stabilizer, an ultraviolet absorber, a nucleating agent, a lubricant, etc. The compsn. is pelletized with a twin-screw extruder or the like and then injection molded to give a hair brush. Tourmaline forms electrodes at both ends of a crystal to permanently maintain a potential, and when the hair brush above-obtd. is used for brushing, a very weak electric current or active electrons generated by the polarization voltage appearing between both the electrodes of the crystal promote the activation of cells of the head skin, etc. Examples of the thermoplastic resin are a polyamide, a thermoplastic polyester, polyethylene, polypropylene, ABS, an ethylene-ethyl acrylate copolymer, and an ethylene-vinyl acetate copolymer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic resin composition containing tourmaline fine particles and a hair brush obtained by injection molding the thermoplastic resin composition.

[0002]

2. Description of the Related Art In recent years, it has been noted that active electrons activate living cells and have a favorable effect on living organisms. Research has been actively conducted on utilizing the active electrons, for example, to promote blood circulation and metabolism.

[0003] Naturally occurring tourmaline has been found as one of the substances that emit such active electrons. This tourmaline emits active electrons, generates positive and negative poles spontaneously at both ends of the crystal, and generates a polarization voltage. Prompt.

On the other hand, in recent years, the hair brush has been provided with various functions other than the brushing performance (for example, by suppressing the adhesion of dust by imparting antistatic performance). However, products that act on a part of the body, such as the scalp and hair, and give a feeling of health comfort have not yet been marketed.

[0005]

SUMMARY OF THE INVENTION The present inventors have made intensive studies to solve the problems of the prior art, and as a result,
The purpose of the present invention is to complete the present invention and, unlike conventional hair brushes, use tourmaline, which is an ore, to act on a part of the body such as the scalp and hair to provide a comfortable feeling of health. It is an object of the present invention to provide a thermoplastic resin composition which can be provided and a hair brush comprising the same.

[0006]

That is, the present invention is obtained by injection molding a thermoplastic resin composition characterized by containing 20 parts by weight or less of powdered tourmaline ore with respect to the thermoplastic resin. It is a hair brush characterized by the above-mentioned.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The thermoplastic resin used in the present invention includes polyamide, thermoplastic polyester, polyethylene, polypropylene, A
Examples include BS, vinyl acetate, vinyl chloride, polyacetal, polycarbonate, and polyphenylene ether. Polyamide, thermoplastic polyester, polyethylene, polypropylene, ABS, ethylene-ethyl acrylate copolymer, and ethylene which are usually used as a material for a hair brush are used. -Vinyl acetate copolymers are preferred.

Preferred specific examples of polyamides include nylon 6, nylon 6.6 and nylon 12, which are on the market.

Preferred examples of the thermoplastic polyester include polybutylene terephthalate and a polybutylene terephthalate-based copolymer.

[0010] The polybutylene terephthalate copolymer is a polymer obtained by copolymerizing dimer acid, tetramethylene glycol polymer or lactone polymer.

The polybutylene terephthalate copolymer obtained by copolymerizing dimer acid includes an acid component mainly composed of terephthalic acid or an ester-forming derivative thereof and a hydrogenated dimer acid or an ester-forming derivative thereof, and 1,4-butane. It is obtained by polycondensing a glycol component mainly composed of a diol.

Hydrogenated dimer acid, which is one of the acid components of a polybutylene terephthalate copolymer obtained by copolymerizing dimer acid, is separated from a low polymer of an unsaturated fatty acid by a clay catalyst and is hydrogenated to trimer acid and monomer. It is obtained after removing by-products such as acids, and the purity is preferably 99% by weight or more.

As a preferred specific example, PRIPOL1008 (36 carbon atoms, aromatic type /
Alicyclic type / linear aliphatic type = 9/54/37 (mol%) dimer acid), PRIPOL 1009 (36/23 / mol (36 mol% dimer acid with 36 carbon atoms)), and further ester-forming properties PRI manufactured by Unichema as a derivative
PLAST3008 (dimethyl ester of PRIPOL1008).

The hydrogenated dimer acid copolymer composition, which is one of the acid components of the polybutylene terephthalate copolymer obtained by copolymerizing dimer acid, is preferably 1 to 20 mol%.

Other polybutylene terephthalate copolymers include polyetherester elastomers obtained by copolymerizing a tetramethylene glycol polymer as a diol component.

Further, there is a polyester ester elastomer obtained by copolymerizing caprolactone with polybutylene terephthalate.

The particle size of the powdered tourmaline ore used in the present invention is preferably 100 μm or less from the viewpoint of the toughness of the hair brush.

The composition of the powdered tourmaline ore used in the present invention is MX3B3Al3 (AlSi2O9) 3 (O, OH,
F) 4 (M = Na or Ca, X = Mg, Fe, Li,
Mn).

Although tourmaline is produced as a natural product in Brazil, the former Soviet Ural, Yunnan Province in China, etc., it is now possible to synthesize crystals artificially. Tourmaline which can be obtained in a special manner can also be used.

In tourmaline, the center of the positive charge and the center of the negative charge in the unit cell of the crystal are largely displaced from the position where they should be located. Therefore, electrodes are formed at both ends of the symmetrical crystal, and the potential is permanently maintained. Holds permanent electrodes. Between the two poles, a polarization voltage of up to tens of thousands of electron volts is generated, whereby the same wavelength of 11 μm and 0.06 mA as controlling the nervous system is applied to the cells of animals and plants located in the electric field constituted by the electrodes. To activate the cells to pass a weak current. In addition, it has been already confirmed that active electrons are emitted from the fine-particle tourmaline.

For this reason, since powdery tourmaline ore is contained in the thermoplastic resin, when brushing is performed with the present hair brush, a weak current and active electrons promote activation of cells such as the scalp.

In the present invention, it is important that the amount of the powdered tourmaline ore is not more than 20 parts by weight based on 100 parts by weight of the thermoplastic resin. If the amount exceeds 20 parts by weight, the toughness of the resin composition itself is reduced, and the resin composition cannot be used as a hair brush. In order to obtain the above effects of tourmaline, the amount is preferably 0.5 parts by weight or more.

The composition of the present invention contains conventional additives and small amounts of reinforcing agents such as antioxidants and heat stabilizers (eg, hindered phenols, hydroquinones, thioethers, phosphites) as long as the objects of the present invention are not impaired. , And their substituents and combinations thereof), ultraviolet absorbers (eg, resorcinol, salicylate, benzotriazole, benzophenone, etc.), nucleating agents (eg, kaolin,
Talc, etc.), lubricants and release agents (e.g., montanic acid and its salts, stearic acid and its salts, stearyl alcohol, stearylamide, silicone resins, etc.), dyes (e.g., nitrosine, etc.) and pigments (e.g., carbon black,
One or more kinds of coloring agents containing cadmium sulfide, phthalocyanine, etc., additives impregnating liquids (eg, silicone oil), reinforcing materials (glass fibers, carbon fibers, whiskers, etc.) and the like can be added.

Further, for the purpose of imparting antistatic properties, carbon black represented by Ketjen black, conductive whiskers, metal oxides, polyethylene glycol methacrylate copolymers and polyetheresteramides,
Add at least one polymer type antistatic agent such as polyether amide imide, polyethylene oxide-epichlorohydrin copolymer, and low molecular type antistatic agent such as glycerin fatty acid ester, alkyl sulfonate, tetraalkylammonium salt and alkyl betaine. You can do it.

It is preferable that all the components of the thermoplastic resin composition of the present invention are sufficiently dispersed until an injection molded article is obtained. As a method for this, for example, there is a method in which a pellet-shaped resin is produced by using a different-direction rotating twin-screw extruder and is subjected to an injection molding process.

[0026]

As described above, the thermoplastic resin composition of the present invention and the hair brush comprising the same can stimulate cells such as the scalp during brushing by containing powdered tourmaline ore.

[0027]

The present invention will be specifically described below with reference to examples. In addition, physical property evaluation was performed according to the following method.

Tensile elongation at break: ASTM D638 Impact strength: ASTM D256 Izod, notched, 1/4 inch

(Production Example of Polybutylene Terephthalate Copolymer Copolymerized with Dimer Acid) 54 kg of dimethyl terephthalate, hydrogenated dimer acid (PR, manufactured by Unichema Co., Ltd.)
IPLAST3008) 18.4 kg, 41 kg of 1,4-butanediol and 0.07 kg of tetra-n-butyl titanate as a transesterification and polymerization catalyst were charged into a transesterification tank, and methanol produced by heating to 210 ° C. was collected outside the system. And transesterified. After the methanol distillation is almost completed, the reaction product is transferred to the polymerization tank and
Over a period of time, the temperature was raised to 250 ° C. and the degree of vacuum to 0.5 mmHg, followed by polycondensation to obtain a polybutylene terephthalate copolymer in which dimer acid was copolymerized.

Examples 1 to 12 A polybutylene terephthalate copolymer obtained by copolymerizing the dimer acids obtained in the above production examples and a polybutylene terephthalate copolymer obtained by copolymerizing tetramethylene glycol (Perprene P-150B, Toyobo Co., Ltd.) ), A polybutylene terephthalate copolymer obtained by copolymerizing caprolactone (Perprene S-2001, manufactured by Toyobo Co., Ltd.), polybutylene terephthalate (PBT724, manufactured by Kanebo Synthetic), nylon 6 (MC120, manufactured by Kanebo Synthetic),
Nylon 6.6 (Leona 1300, manufactured by Asahi Kasei Corporation), Nylon 12 (Diamid L1801, manufactured by Daicel Huls), polyethylene (Ultzex 2010J, manufactured by Mitsui Chemicals), polypropylene (J101, manufactured by Grand Polymer), ABS ( GA-501, manufactured by Sumitomo Dow), ethylene-ethyl acrylate copolymer (EVA
FLEX-EEA A-704 (manufactured by DuPont-Mitsui Polychemicals)) and ethylene-vinyl acetate copolymer (E
2 parts by weight of powdered tourmaline ore (manufactured by New Material Development Co., Ltd.) is blended with 100 parts by weight of VAFLEX EV460) and melt-kneaded with a biaxial kneading extruder having a screw diameter of 30 mm (TEX-30α manufactured by Nippon Steel Corporation). Then, a pellet was obtained.

After the obtained pellets were dried under reduced pressure, they were subjected to injection molding to obtain test specimens, which were subjected to physical property tests. Further, a hair brush having the shape shown in FIG. 1 was molded, and a hair brushing test was performed. The results are shown in Table 1.

[0032]

[Table 1]

Examples 13 and 14 Comparative Example 1 95 parts by weight of a polybutylene terephthalate copolymer obtained by copolymerizing dimer acid used in Example 1 and carbon black (Ketjen Black EC600) as an antistatic agent
Example 1 for 5 parts by weight (JD Lion Akzo)
The powdered tourmaline ore used in the above was blended with the composition shown in Table 2, and pellets were obtained and evaluated in the same manner as in Example 1. The results are also shown in Table 2.

[0034]

[Table 2]

[0035]

From the results of Examples 1 to 14, the thermoplastic resin composition of the present invention contains the fine particles of tourmaline, and gives the above-mentioned effects of tourmaline during hair brushing.

[Brief description of the drawings]

FIG. 1 shows a hair brush used in an embodiment of the present invention.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masaki Yamamoto 4-1 Kanebo-cho, Hofu-shi, Yamaguchi Pref. CF001 CF071 CF101 CF191 CG001 CH071 CL001 CL011 CL031 DJ006 DK006 FD010 FD050 FD060 FD070 FD090 FD100 FD160 FD170 GC00

Claims (8)

[Claims] 1. A thermoplastic resin composition comprising 20 parts by weight or less of powdered tourmaline ore with respect to 100 parts by weight of a thermoplastic resin. 2. A thermoplastic resin composition comprising: polyamide, thermoplastic polyester, polyethylene, polypropylene,
The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition is ABS, an ethylene-ethyl acrylate copolymer, and an ethylene-vinyl acetate copolymer. 3. The polyamide is nylon 6, nylon 6.
The thermoplastic resin composition according to claim 2, which is 6 and nylon 12. 4. The thermoplastic resin composition according to claim 3, wherein the thermoplastic polyester is a polybutylene terephthalate or a polybutylene terephthalate copolymer. 5. The composition according to claim 4, wherein the polybutylene terephthalate-based copolymer is a polymer obtained by copolymerizing a dimer acid, a tetramethylene glycol-based polymer and a lactone-based polymer. 6. A polybutylene terephthalate-based copolymer obtained by copolymerizing dimer acid, comprising terephthalic acid or its ester-forming derivative and hydrogenated dimer acid or its ester-forming derivative as an acid component and 1,4- The composition according to claim 5, which is a polybutylene terephthalate copolymer obtained from butanediol and a glycol component. 7. The thermoplastic resin composition according to claim 1, which is a thermoplastic resin composition containing 0.5 to 20 parts by weight of powdered tourmaline ore based on 100 parts by weight of the thermoplastic resin. 8. A hair brush obtained by injection molding a thermoplastic resin composition with a thermoplastic resin composition containing powdered tourmaline ore.