JP2011111448A - Composite powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite powder which is prepared by further improving the slip of a composite powder prepared by compounding a powder or adhesive resin powder as a material effective for sebum absorption, darkness reduction, etc., on the surface of a plate-like powder, and is excellent in functionality and usability. <P>SOLUTION: By applying a covering plate-like powder to outside a composite powder prepared by applying one or more non-plate-like powders containing at least an adhesive resin powder on the surface of an intermediate layer-constituting plate-like powder, a composite powder wherein the non-plate-like powder and the intermediate layer-constituting plate-like powder are held by the covering plate-like powder is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a composite powder, more specifically, a composite powder in which one or more kinds of non-plate-like powders containing at least an adhesive resin powder are provided on the surface of the plate-like powder. In addition, the present invention relates to a composite powder used in cosmetics and the like.

  Conventionally, plate-like powders such as talc, mica and sericite have been used as powders blended in cosmetics. Such a plate-like powder has the property that it is slippery and can give a glossy or transparent feeling to the decorative film.

  Recently, the surface of the plate-like powder as described above is combined with fine adhesive resin particles and inorganic powder to take advantage of the characteristics of effective materials such as absorbing sebum and suppressing dullness. Development of composite powder, composite powder aiming at blur effect due to light diffusibility, composite powder with improved light refractive index and improved scattering properties, and the like are also underway.

  As technologies relating to composite powders in which adhesive resin particles, inorganic powders and the like are combined on the surface of such a plate-like powder, patent applications such as the following Patent Documents 1 to 7 have been filed.

  However, by compositing adhesive resin particles, inorganic powder, and the like, the point of good slippage inherent to the plate-like powder is inevitably lost.

JP-A-11-92688 JP 2001-10929 A JP 2002-173415 A JP 2003-12461 A JP 2004-2274 A JP 2005-154649 A JP 2005-154278 A

  The present invention has been made in view of the above points, and composites powder and adhesive resin powder, which are effective materials for absorbing sebum and suppressing dullness, on the surface of the plate-like powder. It is an object of the present invention to provide a composite powder that further improves the sliding of the composite powder and has excellent functionality and usability.

  The present invention has been made to solve such a problem, and one or two or more kinds of non-plate-like powders containing at least an adhesive resin powder on the surface of the plate-like powder constituting the intermediate layer. In the composite powder provided with a body, a coating plate powder is provided outside the non-plate powder, so that the coating plate powder and the non-plate powder and intermediate The present invention provides a composite powder characterized in that a plate-like powder constituting a layer is sandwiched.

  The mixing ratio of the plate-like powder constituting the intermediate layer and the non-plate-like powder is preferably 50 to 99: 1 to 50. Further, the mixing ratio of the total amount of the plate-like powder and the non-plate-like powder constituting the intermediate layer and the plate-like powder for coating is preferably 5-20: 20-50.

  As described above, the present invention provides a composite powder in which the surface of the plate-like powder constituting the intermediate layer is provided with one or more non-plate-like powders containing at least an adhesive resin powder. In the above, since the coating plate powder is provided on the outside of these non-plate powders, at least one kind or two or more kinds of powders including the adhesive resin powder are coated plate powder. The adhesive resin powder is adhered to both the plate-shaped powder constituting the intermediate layer and the coating plate-shaped powder by melting the adhesive resin powder or the like. In other words, the non-plate-like powder and the plate-like powder constituting the intermediate layer are sandwiched by the coating plate-like powder. As a result, the smooth use feeling of the plate-like powder constituting the intermediate layer by the non-plate-like powder is prevented by the outer covering plate-like powder. A composite powder can be obtained.

  In addition, the non-plate powder, which is an effective material that absorbs sebum, suppresses dullness, etc., is sandwiched with a plate-like powder that has a good feeling of use, making it a composite powder. It becomes possible to provide a composite powder having excellent properties.

  Further, the plate-like powder for coating is provided outside the non-plate-like powder, and the plate-like powder constituting the non-plate-like powder and the intermediate layer is sandwiched between the plate-like powder for coating outside. Therefore, a space is formed between the plate-like powder constituting the intermediate layer and the outer coating plate-like powder. As a result, for example, when blended in cosmetics, There is an effect such that the sebum is stored in the space between the plate-like powder of the intermediate layer and the makeup is improved.

Sectional drawing which shows notionally the structure of the composite powder of one Embodiment. Sectional drawing which shows notionally the structure of the composite powder of other embodiment. 4 is a scanning electron micrograph of the composite powder of one embodiment.

  As described above, the composite powder of the present invention is provided with one or more kinds of non-plate-like powder containing at least an adhesive resin powder on the surface of the plate-like powder constituting the intermediate layer. In the composite powder, a coating plate powder is provided outside the non-plate powder, and the coating plate powder forms the non-plate powder and the intermediate layer. The plate-like powder is sandwiched. Further, the composite powder in which the surface of the plate-like powder constituting the intermediate layer is provided with one or more kinds of non-plate-like powder containing at least an adhesive resin powder has a multilayer structure. It may be.

  As the plate-like powder constituting the intermediate layer and the plate-like powder for coating, for example, talc, sericite, mica, barium sulfate, boron nitride, mica titanium, synthetic phlogopite, kaolin, silica, alumina, A borosilicate compound or the like can be used. These plate-like powders may be subjected to surface treatment. Further, the plate-like powder constituting the intermediate layer and the plate-like powder for coating may be the same or different. The plate-like powder constituting the intermediate layer and the coating plate-like powder may be used in combination of two or more.

  The average particle size of the plate-like powder used for the intermediate layer is not particularly limited, but is preferably 5 to 50 μm. When the thickness is less than 5 μm, it is not preferable because non-plate-like powders which are effective materials such as absorbing sebum that can be contained in the plate-like powders and suppressing dullness are difficult to adhere. On the other hand, if it exceeds 50 μm, the average particle size of the composite powder becomes 50 μm or more, which causes a problem that a rough feeling of use appears.

  Moreover, the average particle diameter of the plate powder for coating is not particularly limited, but is preferably 5 to 50 μm. If it is less than 5 μm, the problem that it becomes difficult to obtain the smoothness of the plate-like powder is not preferable. On the other hand, if it exceeds 50 μm, the problem that a rough feeling of use appears like the plate-like powder constituting the intermediate layer is not preferable.

  Further, as the adhesive resin powder, acrylic resin powder such as polymethyl methacrylate, polyamide resin powder, polyethylene resin powder, polystyrene resin powder, silicone resin powder, urethane resin powder, or these A copolymer resin or the like can be used. Particularly preferred is an acrylic resin, and polymethyl methacrylate is particularly preferred as the acrylic resin. For example, MP-1600 (manufactured by Soken Chemical Co., Ltd.) and M-201 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) can be used. Two or more types of adhesive resin powders may be used in combination.

  The average particle diameter of the adhesive resin powder is not particularly limited, but is preferably 0.2 to 5 μm. If it is less than 0.2 μm, there is a problem in dispersibility, which is not preferable. On the other hand, when the thickness exceeds 5 μm, it is not preferable because an adhesive resin powder hardly adheres to the plate-like powder.

Furthermore, as non-plate-like powders other than adhesive resin powders, inorganic powders such as titanium oxide, zinc oxide, cerium oxide, iron oxide, barium sulfate, silica, and alumina can be used as effective materials having various effects. Can be used. These inorganic powders may be surface-treated. As effective materials, red 202, red 228, red 226, yellow 4, blue 404, yellow 5, red 505, red 230, red 223, orange 201, red 213, yellow Organic powders such as No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201 and Red No. 204, organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder and organopolysiloxane elastomer It can also be used. The organic pigments may be raked. Furthermore, non-plate-like powders in which two or more of the above inorganic powders and organic pigments are combined can also be used.
The average particle diameter of these non-plate-like powders is not particularly limited, but is preferably 0.02 to 5.0 μm. If it is less than 0.02 μm, a problem occurs in dispersibility, which is not preferable. On the other hand, if it exceeds 5.0 μm, it becomes difficult to adhere to the plate-like powder, which is not preferable. More preferably, the average particle size of the adhesive resin powder is larger than the average particle size of the non-plate-like powder other than the adhesive resin powder. Moreover, you may use non-plate-like powder other than adhesive resin powder in combination of 2 or more types. In the present invention, “non-plate-like powder” means a powder other than the plate-like powder, and examples thereof include a spherical powder. However, the shape is not limited to a spherical shape.
The average particle diameter of the non-plate-like powder other than the plate-like powder, the adhesive resin powder, and the adhesive resin powder can be measured by, for example, a laser diffraction / scattering method. The median diameter can be calculated from the volume-based particle size distribution measured by the diffraction / scattering method, and the median diameter can be used as the average particle diameter.

  The mixing ratio of the plate-like powder constituting the intermediate layer and the non-plate-like powder containing the adhesive resin powder is not particularly limited, but is preferably 50 to 99: 1 to 50. By setting it as this compounding ratio, the effect of the non-plate-shaped powder containing the adhesive resin powder which comprises an intermediate | middle layer, the powder which is an effective raw material, etc. can be exhibited to the maximum. Moreover, although the compounding ratio of the total amount of the plate-like powder and the non-plate-like powder constituting the intermediate layer and the plate-like powder for coating is not particularly limited, it is 5-20: 20-50. Preferably there is. By setting it as this compounding ratio, an intermediate | middle layer can be efficiently pinched | interposed with the plate-shaped powder for a coating.

  The preparation method of the composite powder as an example will be described. First, a part of the composite powder constituting the intermediate layer is prepared. More specifically, first, plate-like powder and one or more kinds of non-plate-like powder containing at least adhesive resin powder are mixed at high speed with a high-speed stirrer or the like usually used for powder mixing. . By this operation, the non-plate-like powder containing the adhesive resin powder adheres to the plate-like powder surface.

  Next, the mixed powder of the plate-like powder and the non-plate-like powder containing the adhesive resin powder mixed as described above is allowed to stand for 1 to 5 hours at a temperature of 100 to 300 ° C. The powder is melted and fused to the surface of the plate-like powder. Thereafter, by cooling, preparation of the part of the composite powder constituting the intermediate layer is completed.

  Next, the part of the composite powder constituting the intermediate layer prepared as described above and the plate powder for coating are mixed at a predetermined ratio. This mixed powder is allowed to stand at a temperature of 100 to 300 ° C. for 1 to 5 hours, the adhesive resin powder is melted again, and a coating plate shape serving as an outer layer is formed on the composite powder portion of the intermediate layer. The powder is fused. Thereafter, the composite powder is prepared by cooling.

  As an embodiment of the present invention, the structure of a composite powder sandwiching an intermediate layer is schematically shown in FIG. That is, the adhesive resin powder 3 and the powder 2 of an effective material other than the adhesive resin powder are provided on both front and back surfaces of the plate-like powder 1 constituting the intermediate layer. 2 and the adhesive resin powder 3 are provided with a coating plate powder 4 provided outside. The intermediate layer sandwiched by the coating plate-like powder 4 may be present not only in one layer but also in a plurality of layers.

  FIG. 2 schematically shows the structure of the composite powder of another embodiment. The composite powder shown in FIG. 2 includes an adhesive resin powder 3 on both front and back surfaces of the plate-like powder 1 constituting the intermediate layer. Further, the composite powder shown in FIG. The plate-like powder 4 is provided. The composite powder of the embodiment of FIG. 2 does not include the powder 2 of an effective material other than the adhesive resin powder like the composite powder of the embodiment of FIG.

  Furthermore, a scanning electron micrograph of the composite powder as an example is shown in FIG.

  The composite powder of the present invention can be used, for example, in cosmetics. Although the compounding quantity in that case is not specifically limited, It is desirable that it is 0.1-50.0 mass%.

  When blended in a cosmetic, the cosmetic can contain optional components used in general cosmetics in addition to the composite powder as described above. Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oil, wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, oil, wax, liquid wax, liquid paraffin, squalane, bean wax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax , Hydrocarbons such as microcrystalline wax, higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, cetyl alcohol, stearyl alcohol, isostere Higher alcohols such as ril alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol, etc., cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, apple Diisostearyl acid, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, Synthetic ester oils such as trimethylolpropane triisostearate and pentane erythritol tetra-2-ethylhexanoate, dimethylpolysiloxane, methylphenyl Linear polysiloxanes such as siloxane, diphenylpolysiloxane, cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane , Oil agents such as silicone oil such as modified polysiloxane such as fluorine-modified polysiloxane, fatty acid soap (sodium laurate, sodium palmitate, etc.), anionic surfactants such as potassium lauryl sulfate, alkylsulfuric acid triethanolamine ether, Cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide, imidazoline-based amphoteric surfactants (2-cocoyl-2-yl) Midazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaines, amide betaines, sulfobetaines, etc.), amphoteric surfactants such as acylmethyl taurine, sorbitan fatty acid esters ( Sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ether, POE sorbitan fatty acid ester (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fat Esters (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl) Ethers, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), Nonionic surfactants such as sucrose fatty acid esters and alkyl glucosides, polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene Glycols, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexylene glycol, 1,2-hexanediol, 1,2-octanediol and other polyhydric alcohols, pyrrolidone Moisturizing ingredients such as sodium carboxylate, lactic acid, sodium lactate, guar gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose, Chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate Acid, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfuric acid, locust bean gum, succinoglucan, carolinic acid, chitin, chitosan, carboxymethylchitin, agar, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate , Polyethylene glycol, thickeners such as bentonite, surface may be treated, mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate, etc. Body, surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments, surface may be treated, mica titanium , Fish phosphorus foil, oxychloride Pearls such as trout, red 202, red 228, red 226, yellow 4, blue 404, yellow 5, red 505, red 230, red 223, which may be raked, Organic dyes such as orange 201, red 213, yellow 204, yellow 203, blue 1, green 201, purple 201, red 204, polyethylene powder, polymethyl methacrylate, nylon powder, organopoly Organic powders such as siloxane elastomers, paraaminobenzoic acid UV absorbers, anthranilic acid UV absorbers, salicylic acid UV absorbers, cinnamic acid UV absorbers, benzophenone UV absorbers, sugar UV absorbers, 2 -(2'-hydroxy-5'-t-octylphenyl) benzotriazole, 4-methoxy-4'-t-butyldibenzoylmeta UV absorbers such as ethanol, lower alcohols such as ethanol, isopropanol, vitamin A or its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or its derivatives, vitamin B12, vitamin B15 or its Vitamin B such as derivatives, vitamin E such as α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D, vitamin H, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone, etc. are required Depending on the case, it can be blended appropriately.

  Moreover, the composite powder of the present invention can be blended in, for example, quasi-drugs, pharmaceuticals and the like in addition to cosmetics. In the case of quasi-drugs, pharmaceuticals, etc., in addition to the above composite powder, for example, a blood circulation promoter, an anti-inflammatory agent, an active enzyme scavenger, a keratolytic agent and the like can be appropriately blended.

  Hereinafter, the present invention will be described in more detail, but it is needless to say that the present invention is not limited only to such examples.

Example 1
This example is an example of a multilayered composite powder for preventing shine. In this example, mica was used as the plate-like powder constituting the intermediate layer, polymethyl methacrylate was used as the adhesive resin powder, and zinc oxide was used as the powder of the effective material. The mixing ratio of mica, polymethyl methacrylate, and zinc oxide was 7: 1: 2.

  Mica was used as the plate-like powder constituting the outer layer for coating. The compounding ratio of mica constituting the outer layer for coating and the intermediate layer (mica constituting the intermediate layer, polymethyl methacrylate and zinc oxide) was 2: 1.

  In this example, mica Y-2400 (manufactured by Yamaguchi Mica Industry Co., Ltd.) is used as the plate-like powder constituting the intermediate layer, and MP-1600 (manufactured by Soken Chemical Co., Ltd.) is used as the polymethyl methacrylate. As the zinc oxide, Japanese Pharmacopoeia zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd.) was used, and as the plate-like powder constituting the coating outer layer, mica SA-310 (manufactured by Yamaguchi Mica Industry Co., Ltd.) was used. .

(Example 2)
This example is an example of a multilayered composite powder for preventing blur. In this example, mica was used as the plate-like powder constituting the intermediate layer, polymethyl methacrylate was used as the adhesive resin powder, and titanium oxide was used as the powder of the effective material. The mixing ratio of mica, polymethyl methacrylate, and titanium oxide was 6: 1: 3.

  Mica was used as the plate-like powder constituting the outer layer for coating. The mixing ratio of mica constituting the outer layer for coating and the intermediate layer was 2: 1.

  In this example, mica Y-2400 (manufactured by Yamaguchi Mica Industry Co., Ltd.) is used as the plate-like powder constituting the intermediate layer, and MP-1600 (manufactured by Soken Chemical Co., Ltd.) is used as the polymethyl methacrylate. As the titanium oxide, Taipei CR-50 (manufactured by Ishihara Sangyo Co., Ltd.) was used, and Mica SA-310 (manufactured by Yamaguchi Mica Industry Co., Ltd.) was used as the plate-like powder constituting the outer layer for coating.

(Other examples)
In the above-described embodiment, the powder of the effective material is contained in the intermediate layer portion. However, the inclusion of the powder of the effective material is not essential for the present invention. For example, the plate-like powder and the adhesive resin It is also possible to form the intermediate layer with only the powder.

DESCRIPTION OF SYMBOLS 1 Plate-shaped powder which comprises intermediate | middle layer 2 Powder of effective materials other than adhesive resin powder 3 Adhesive resin powder 4 Plate-shaped powder for coating

Claims (3)

  In the composite powder in which the surface of the plate-like powder constituting the intermediate layer is provided with one or more kinds of non-plate-like powder containing at least an adhesive resin powder, By providing a plate powder for coating on the outside, the plate powder for forming the intermediate layer is sandwiched between the non-plate powder and the plate powder for coating. Composite powder.   The composite powder according to claim 1, wherein the mixing ratio of the plate-like powder constituting the intermediate layer and the non-plate-like powder is 50 to 99: 1 to 50.   The composite according to claim 1 or 2, wherein a mixing ratio of the total amount of the plate-like powder and the non-plate-like powder constituting the intermediate layer and the plate-like powder for coating is 5 to 20:20 to 50. powder.