JP2000309503A - Liquid or creamy cosmetic containing cellulose fine particle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject cosmetic derived from a naturally occurring substance, having excellent adhesivity to the skin by making the cosmetic include a specific amount of a cellulose fine particle or a cellulose complex fine particle having a specified particle shape. SOLUTION: This cosmetic comprises 1.0-40 wt.% of a cellulose fine particle having 0.2-20 μm average particle diameter and <=1.30 L/D (L is the major axis of the fine particle; D is the minor axis of the particle) and is obtained by dissolving (A) an oily raw material (e.g. palmitic acid, squalane, etc.), under heating, adding (B) a sufficiently mixed and ground pigment (e.g. talc, kaolin, etc.), granulating/drying (C) a cellulose suspension by a spray dry method, sufficiently kneading and then deaerating. The component C is obtained by dispersing one or more of an ultraviolet screening agent, a dye, a pigment, a perfume and a silica compound to the suspension according to required performances.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid or cream cosmetic containing cellulose fine particles or cellulose composite fine particles.

[0002]

2. Description of the Related Art Liquid and cream-form cosmetic components include a solid component containing a scrubbing agent (facial cleanser), a rolling agent (makeup cosmetic), a pigment or a sunscreen agent (emulsion, sunscreen cosmetic). , Make-up cosmetics, etc.) and abrasives (toothpaste, etc.).

For example, as a scrub agent, 20 to 10
For example, polyethylene powder or nylon powder of 00 μm (about 100 μm on average) is used. As the cosmetic base material or the rolling agent, synthetic polymer fine particles are used.

Generally, fine particles obtained by pulverizing a synthetic polymer powder are used as a cosmetic base material, and spherical fine particles having a small friction coefficient are used as a rolling agent. These are made of nylon (nylon 6), polyethylene, polystyrene, polymethyl methacrylate (PM
MA) and the like.

However, when these synthetic polymer particles are poorly dispersed and have poor dispersibility and are blended in a large amount, separation occurs, the filling property of the container deteriorates, and the cosmetic itself adheres to the skin and becomes uncomfortable. There is a problem that the adhesion to the substrate is significantly reduced. In addition, excluding nylon particles, it has poor hygroscopicity (moisture retention).

[0006] In addition, inorganic particles such as calcium carbonate and calcium hydrogen phosphate are used as abrasives for dentifrices. The requirements for the abrasive are that there is no danger of damaging the tooth surface and gums and that it does not feel rough, and that it has a hardness that does not damage tooth enamel and has a particle size of about 2
It is insoluble in water of 0 μm or less and can be put into the oral cavity without any problem. For the above-mentioned reasons, it is not preferable that the particles have a needle shape or a rod shape.

Further, as pigments and sunscreen agents, silica compounds (mica, talc, kaolin, etc.), iron oxide,
Inorganic particles such as aluminum oxide, carbon black, titanium dioxide, and zinc oxide are used.

[0008] Although there has been a demand for the use of a naturally-derived material for the above-mentioned cosmetic applications, there has been no material which is satisfactory in terms of functionality. Microcrystalline cellulose (MC
There are examples in which C) and porous cellulose fine particles are blended in cosmetics, but it cannot be said that they occupy a major position.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spherical cellulose fine particle having a variety of functions such as a cosmetic base material, a rolling agent, an abrasive and the like, which is naturally derived and has excellent adhesion to the skin. Incorporated spherical cellulose composite fine particles,
An object of the present invention is to provide a novel liquid or creamy cosmetic.

[0010]

According to the present invention, there are provided (1) an average particle diameter of 0.2 to 20 μm and an L / D (where
L indicates the major axis of the cellulose fine particles or the cellulose composite fine particles, and D indicates the minor axis. ) Is a liquid or creamy cosmetic containing 1.0 to 40% by weight of cellulose microparticles and / or cellulose composite microparticles, which are microparticles having a particle size of 1.30 or less; ) Is 100 or less, the fraction of the cellulose type I crystal component is 0.1 or less, and the fraction of the cellulose type II crystal component is 0.1.
(3) a liquid or creamy cosmetic according to the above (1), wherein the cellulose composite fine particles are cellulose, and at least one functional component selected from an ultraviolet ray shielding agent, a dye, a pigment, a silica compound, and a fragrance; Is a liquid or creamy cosmetic according to the above (1) or (2), wherein the cosmetic is a particle in which is dispersed or adsorbed.

The average particle diameter, average degree of polymerization (DP), crystallinity, and physical properties of L / D described in the present invention are PCT / J
The value measured by the method specified in P98 / 05462 was adopted.

That is, the average particle size of the cellulose fine particles and the cellulose composite fine particles is determined by scanning electron microscope observation (S-800A, manufactured by Hitachi, Ltd.).
The value measured by the following method was adopted. The fine powder sample is placed on a sample table for a microscope, and a metal such as gold or platinum is vapor-deposited by an ion sputtering device or the like to obtain a microscope sample. The average particle size is
The particle size of 50 particles randomly extracted from an image obtained by observing the microscopic sample at an accelerating voltage of 5 KV at a magnification of 3000 was measured, and the weight average particle size was determined.

The ratio (L / D) between the major axis (L) and the minor axis (D) of the fine particles is determined by measuring the major axis (L) and the minor axis (D) according to the above-described method for measuring the average particle diameter. Then, the average value was adopted.

The fractions (χ _I and χ _II ) of the crystalline components of cellulose I and cellulose II were calculated by the following procedure using a wide-angle X-ray diffraction method (using Rotaflex RU-300 manufactured by Rigaku Corporation). .

[0015] The fraction of cellulose I type crystal component (χ _I)
Is to pulverize the dried cellulose sample into powder and form into tablets,
In the wide-angle X-ray diffraction diagram obtained by the reflection method with the source CuKα,
From the absolute peak intensity h _{0 at} 2θ = 15.0 ° attributed to the (110) plane peak of the cellulose type I crystal and the peak intensity h ₁ from the baseline at this plane interval, it is determined by the following equation (1). Values were used.

Similarly, the fraction (χ _II ) of the cellulose type II crystal component can be calculated from a wide-angle X-ray diffraction pattern obtained by pulverizing a dried cellulose sample into a powder and forming it into a tablet, and using a source CuKα to obtain a reflection method. Absolute peak intensity h _{0 at} 2θ = 12.6 ° attributed to the (110) plane peak of cellulose II crystal
From * and the peak intensity h ₁ * from the baseline at this plane interval, a value obtained by the following equation (2) was used.

Χ _I = h ₁ / h ₀ (1) χ _II = h ₁ * / h ₀ * (2) FIG. 1 is a schematic diagram for determining χ _I and χ _II .

The average degree of polymerization (DP) specified in the present invention is:
The specific viscosity of a diluted cellulose solution obtained by dissolving a dried cellulose sample in cadoxene was measured with an Ubbelohde viscometer (25).
° C) and a value calculated from the limiting viscosity number [η] by the following viscosity formula (3) and conversion formula (4).

[0019] [η] = 3.85 × 10 ~ 2 × M W 0.76 (3) DP = M W / 162 (4) Moreover, various physical properties of these fine particles, in a dry state prior to the addition to the cosmetic Value used.

The cosmetic of the present invention is a liquid or cream-like material composed of cellulose fine particles and cellulose composite fine particles (hereinafter, collectively referred to as fine particles unless otherwise specified) and other cosmetic ingredients.

Hereinafter, the fine particles of the present invention will be described first.

The fine particles of the present invention may be fine particles of natural cellulose (for example, MCC, microcrystalline cellulose).
Any fine particles of regenerated cellulose may be used as long as they satisfy the structure of the present invention. Although the fine particles of the present invention will be described in detail in Preparation Examples later, they can be suitably obtained by a spray drying method.

The fine particles of the present invention have an average particle size of 0.2
And the ratio (L / D) of the major axis L to the minor axis D is 1.30 or less, preferably 1.20 or less, particularly preferably 1.1 or less. Fine, spherical cellulose particles or cellulose composite particles are preferred.

When the particle size of the present invention is more than 20 μm, it is not preferable because roughness is felt on the skin and in the oral cavity and rolling property is deteriorated. On the other hand, when the thickness is 0.2 μm or less, the efficiency of capturing particles is extremely reduced, which is not preferable. Similarly, if the L / D exceeds 1.30, it cannot be approximated to a true sphere, and a feeling of roughness is felt, resulting in lower rolling properties, which is not preferable.

The fine particles obtained from cellulose having a low degree of polymerization and low crystallinity according to the present invention exhibit the above-mentioned effects more remarkably, and are therefore more preferable for the cosmetic according to the present invention.

That is, the average degree of polymerization (DP) is a low degree of polymerization of 100 or less, the fraction of the cellulose type I crystal component (χ _I ) is 0.1 or less, and the fraction of the cellulose type II crystal component (χ _II ) Are fine particles of cellulose of 0.4 or less. The fine particles can be obtained from the above-mentioned suspension of cellulose by a spray drying method. According to this method, fine particles of 5 μm or less can be easily produced. The fine particles are (a) close to a true sphere having an L / D of 1.2 or less, the surface of the fine particles is extremely smooth, (b) excellent in compressive strength,
(C) low cohesiveness, (d) high water retention and oil absorption,
It has the feature of. Further, according to the method for producing fine particles from the above-mentioned suspension of cellulose by a spray drying method, fine particles in which functional components are uniformly dispersed are easily obtained. For this reason, a high function can be provided to the cosmetic of the present invention. Since the cellulose fine particles are composed of cellulose that is insoluble in water, the average degree of polymerization (DP) is 20.
That is all.

In the present invention, the above-mentioned compressive strength and cohesiveness (coagulation coefficient) were evaluated as follows.

The compressive strength was determined based on the degree of destruction and deformation due to pressure. That is, 0.2 g of dried fine particles were collected, and a tablet molding machine having a diameter of 12.5 mmφ (Co., Ltd.)
(Manufactured by Shimadzu Corporation), pre-molded by suction for 3 minutes under reduced pressure of 600 mmHg or less, and then 100 kgf / c
It was compression molded at a pressure of m ² for 3 minutes. The pellets of the fine particles after tableting were carefully ground by tapping with an agate pestle and finely divided. Scanning electron microscope (S-800A type, manufactured by Hitachi, Ltd.)
And observed the destruction and deformation of the original fine particles. Determination of the presence or absence of breakage and deformation was performed by measuring the average L / D of 50 randomly selected fine particles. When L / D was 1.3 or less, it was determined that there was no destruction or deformation.

The agglomeration coefficient of cellulose fine particles is defined by (average particle diameter calculated from a volume conversion distribution obtained by a laser diffraction / scattering type particle size distribution analyzer) / (average particle diameter in volume conversion by a scanning electron microscope). Is done. In the present invention, the agglomeration coefficient is measured by a laser diffraction / scattering particle size distribution analyzer (LA-920 / dry unit) manufactured by Horiba, Ltd.
And the weight average particle diameter obtained by the above-mentioned scanning electron microscope.

The average particle size determined by scanning electron microscopy corresponds to a case where the aggregation coefficient is 1.00. On the other hand, the average particle diameter obtained by using the particle size distribution device described above is the average particle diameter of the fine particles aggregated in a powder state, and reflects the aggregation state inherent to the fine particles.
Therefore, by comparing this ratio, the "degree of easiness of aggregation" of the fine particles can be evaluated.

The above average degree of polymerization (DP) is a low degree of polymerization of 100 or less, and the fraction of cellulose I type crystal component (χ _I )
Is 0.1 or less, fraction of cellulose II type crystal component (χ _II )
Of cellulose having a particle size of 0.4 or less is 100 k
gf / cm ² pressure, preferably 200 kgf / c
Fine particles that do not break or deform even when compressed at a pressure of m ² . Further, the fine particles have low cohesiveness and an agglomeration coefficient of 1.0 to 3.0, preferably 1.0 to 1.8.

The cosmetic of the present invention is characterized in that the fine particles are 1 to 4
It is a cosmetic containing 0% by weight.

The proportion of the cellulose fine particles in the cosmetic of the present invention is preferably in the range of about 5 to 40% by weight for use in abrasives, and is generally in the range of 1 to 20% for rolling agents and cosmetic bases. % Is appropriate.

Similarly, the ratio of the cellulose composite fine particles should be basically noted based on the above ratio and the following points should be noted. That is, in the case of a cellulose composite fine particle in which a fragrance, a dye, a pigment, an ultraviolet ray shielding agent and the like are composited, in the case of a cellulose composite fine particle in which 1 to 10% by weight of a cosmetic is mixed with silica, a metal oxide, and the like. 1 to 40% by weight
It is preferable to set the degree to such an extent that the effect of the composited functional component becomes apparent. Strictly, it is desirable to determine in consideration of the required performance and the pure content of the functional component in the cosmetic.

The cellulose composite fine particles referred to in the cosmetic of the present invention are fine particles obtained by dispersing one or more functional components selected from a coloring agent such as an ultraviolet shielding agent, a dye and a pigment, a silica compound and a fragrance in cellulose. .

Examples of the ultraviolet shielding agent include finely divided titanium oxide, zinc oxide, cerium oxide, benzophenone derivatives, paraaminobenzoic acid derivatives, methoxycinnamic acid derivatives, and salicylic acid derivatives. As a dye,
Yellow No. 5, Red No. 505 Red No. 230, Red Rhodamine B, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 20
No. 1, Green No. 202, Red No. 201, Red No. 202, Red No. 228, Red No. 226, Blue No. 404 and the like. As the pigment, for example, talc, mica, kaolin, magnesium carbonate, inorganic silicic acid, aluminum oxide,
Barium sulfate, red iron oxide, black iron oxide, black iron oxide, black blue oxide, navy blue, carbon black, fish scale foil, bismuth oxychloride, boron nitride, photochromic pigment, synthetic fluorophlogopite, iron-containing synthetic fluorophlogopite, etc. Can be Examples of silica compounds generally used include silica, aluminum silicate, magnesium silicate, calcium silicate and aluminum magnesium silicate. What is commonly used as a fragrance,
For example, rose oil, jasmine oil, neroli oil, lavender oil, ylang ylang oil, tuberose oil, clary sage oil, clove oil, peppermint oil, geranium oil, patchouli oil, sandalwood oil, cinnamon oil, coriander oil, nutmeg oil, pepper Oil, lemon oil, orange oil, bergamot oil, oppoponax oil, vetiver oil,
Oris oil, oak moss oil, musk oil, civet oil, castorium oil, ambergris oil, limonene, β-caryophyllene, cis-3-hexyl, linalool, farnesol, β-phenylethyl alcohol, citral, α-hexylcinamic aldehyde , Β-ionone, l-carvone, cyclopentadecanone, linalyl acetate, benzyl benzoate, γ-undecalactone, eugenol, rose oxide, indole, phenylacetaldehyde dimethyl acetal, aurantiol, and the like, but are not limited thereto. It is not something to be done. One or more of these may be selected and used.

Next, a preferred method for producing the fine particles of the present invention will be outlined.

The cellulose fine particles of the present invention can be obtained by granulating / drying by a spray-drying method according to the methods exemplified in Preparation Examples 1 and 2 of the present invention described later. Such cellulose fine particles of the present invention have high particle strength and are almost non-porous particles.

Further, as shown in Preparation Example 3, the cellulose composite fine particles can be obtained by granulating / drying a suspension obtained by dispersing a functional component in a cellulose suspension by a spray drying method, Alternatively, it can be obtained by adsorbing and absorbing a functional component on the cellulose fine particles of the present invention as in Preparation Example 4.

The content of the functional component in the cellulose composite fine particles cannot be determined unconditionally because it varies depending on the type of the functional component and the type of the cosmetic. 5% by weight or less, preferably 3% by weight
In the following, about 50% by weight or less, preferably 30% by weight or less is appropriate for silica compounds and metal oxides.

The liquid or creamy cosmetic of the present invention includes, in addition to the fine particles of the present invention, a dispersion medium such as water or alcohol, an oily raw material, a surfactant, a humectant, a thickener, an ultraviolet absorber, Antioxidants, preservatives, sequestering agents, coloring agents such as dyes and pigments, fragrances, etc., as well as whitening agents, anti-inflammatory agents, skin roughening inhibitors, antiperspirants, oral agents, vitamins, hormones, etc. Various drugs can be obtained by appropriately mixing them in appropriate amounts. In addition, an oil-soluble polymer, a polymer latex, or the like can be used as appropriate.

Among these components, powders such as talc, mica, sericite, kaolin, bentonite, vermiculite, hectorite, zeolite,
Inorganic pigments such as silica, aluminum silicate, magnesium silicate, calcium silicate, aluminum magnesium silicate, magnesium carbonate, calcium carbonate, barium sulfate, hydroxyapatite, boron nitride, mica treated with barium sulfate; spherical nylon powder, spherical poly Spherical organic powders such as methyl methacrylate powder, spherical polyethylene powder, spherical polystyrene powder, spherical benzoguanamine powder, and spherical fluororesin powder; organic-inorganic composite powders such as zirconium oxide-coated nylon powder and titanium oxide-coated nylon powder; titanium dioxide, oxidized Inorganic white pigments such as zinc; inorganic red pigments such as iron oxide (iron oxide) and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and loess; black iron oxide; No carbon black, low order titanium oxide, etc. Black pigment; mango violet,
Inorganic purple pigments such as cobalt violet; inorganic green pigments such as chromium oxide, chromium hydroxide, and cobalt titanate; inorganic blue pigments such as ultramarine and navy blue; titanium oxide coated mica, bismuth oxychloride, and titanium oxide coated oxychloride Bismuth, titanium oxide coated talc,
Pearl pigments such as colored titanium oxide coated mica and fish scale foil; metal powder pigments such as aluminum powder and copper powder; Red No. 201, Red No. 202, Red No. 204
No., Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204
Organic pigments such as No. 205, Yellow No. 205, Yellow No. 401 and Blue No. 404; Red No. 3, Red No. 104, Red No. 106,
Red 227, Red 230, Red 401, Red 50
No. 5, orange 205, yellow 4, yellow 5, yellow 202
Organic coloring pigments such as zirconium, barium or aluminum lake such as No. 203, yellow No. 203, green No. 3 and blue No. 1; and natural pigments such as chlorophyll and β-carotene, but are not limited thereto.

The oily raw materials include liquid, semi-solid, solid and the like. Among them, avocado oil, camellia oil, macadamia nut oil, olive oil, castor oil, carnauba wax, candelilla, which are generally used in cosmetics. Vegetable oils such as wax and jojoba oil; animal oils such as beeswax and lanolin; liquid hydrocarbon oils such as liquid paraffin, paraffin, petrolatum, ceresin, microcrystalline wax, squalene, squalane; lauric acid, myristic acid, palmitic acid, stearic acid, Fatty acids such as oleic acid and isostearic acid; alcohols such as cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, hexadecyl alcohol, oleyl alcohol; cetyl 2-ethylhexanoate, and 2-ethyl palmitate Hexyl, 2-octyldodecyl myristate, neopentyl glycol di-2-ethylhexanoate, glycerol tri-2-ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, tri-2 -Glycerol ethylhexanoate, 2-octyldodecyl oleate, isopropyl myristate, glycerol triisostearate, diglyceride 2-ethylhexanoate, di-paramethoxycinnamic acid-
Esters such as glyceryl mono-2-ethylhexanoate; silicone oils such as dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, etc., and one or more kinds are mixed. Can be used.

Examples of the surfactant include higher fatty acid soap, alkyl sulfate, polyoxyethylene alkyl ether sulfate, acyl N-methyl laurate, alkyl ether phosphate, N-acyl amino acid salt, and alkyltrimethyl ammonium chloride. , Alkyldimethylammonium chloride, versaconium chloride, alkylmethylaminoacetate betaine, alkylamidodimethylaminoacetate betaine, 2-alkyl-N-carboxy-N-hydroxyimidazolinium betaine, polyoxyethylene type or polyhydric alcohol ester type specific ion Surfactants and the like. Examples of the humectant include polyhydric alcohols such as glycerin, propylene glycol, and sorbitol, polyethylene glycol, sodium lactate, pyrrolidone carboxylate, and hyaluronate. Examples of the thickener include plant gums such as carrageenan, polysaccharides such as dextran and hyaluronic acid, proteins such as gelatin and albumin, cellulose derivatives such as hydroxyethylcellulose, starches, alginic acids, polyvinyl alcohol, polyvinylpyrrolidone and carboxyvinyl. Polymers, synthetic polymers such as polyethylene oxide, and inorganic substances such as bentonite and laponite. The aforementioned substances can be used as the ultraviolet absorber. However, it is not limited to these.

Although not exemplified, preservatives, antioxidants, various chemicals, etc. may be used if they can be used in cosmetics.
It is possible to appropriately add an appropriate amount.

The cosmetics of the present invention include cosmetics for skin, hair and
It can be applied to many liquid or creamy cosmetics such as hair cosmetics and oral cosmetics.

The cosmetic of the present invention has a particle size of 20 μm.
It consists of the following particles, but can also be used as a new scrub face wash that is expected to have a mild effect. Although not the present invention, by increasing the particle size of the fine particles to 20 μm or more, it can be used as a normal scrubbing agent for cleaning.

[0048]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the following examples, which do not limit the scope of the present invention.

[0049]

EXAMPLES (Preparation Example 1) Fine particles of MCC (sample name: P-
001) was prepared. An MCC suspension (Seolas FP03TM, cellulose concentration 10% by weight, manufactured by Asahi Kasei Kogyo Co., Ltd.) was granulated by a spray drying method as described below to obtain MCC fine particles. Theolus FP03 is diluted with purified water so that the cellulose concentration becomes 4% by weight, and a household food processor (knife cutter, rotation speed 1) is used.
(5000 rpm or more) for 3 minutes. This diluted solution is sprayed with a spray-type spray dryer (SD-100).
Type 0, manufactured by Tokyo Rikakikai Co., Ltd.) and spray-dried (sample supply amount 25 ml / min, spray nozzle diameter 0.7 mmφ, inlet temperature 165 ° C., outlet temperature about 90 ° C.), and the average particle diameter is 14.6 μm. , L / D is 1.3, DP is 192, chi _I is 0.68, chi _II to obtain a particulate zero. This sample is referred to as P-0
01.

(Preparation Example 2) Low-crystalline cellulose fine particles (sample name: P-002) were prepared. Sulfite pulp (average degree of polymerization: 760) was dissolved in a 65% by weight aqueous sulfuric acid solution at −5 ° C. to obtain a cellulose dope (cellulose concentration: 5% by weight). The dope was poured into 2.5 times by weight of water (5 ° C.) with stirring to obtain a suspension. This suspension was hydrolyzed at 85 ° C. for 30 minutes, and then sufficiently washed with water and dehydrated under reduced pressure until the pH became 4 or more, to obtain a dehydrated cake (G1 sample) having a cellulose concentration of 6.4% by weight. This G1 sample was diluted with purified water to a cellulose concentration of 4% by weight, and uniformly stirred to obtain a G2 sample.

Next, the G2 sample was spray-dried to obtain low crystalline fine particles. The obtained fine particles are designated as P-002. P-002 had an average particle size of 3.1 μm, an L / D of 1.0, and an agglomeration coefficient of 1.5. P-002 to 20
Compression molding was performed at 0 kgf / cm ² , but no deformation or destruction occurred. The average degree of polymerization (DP) is 32, the fraction of chi _I component is 0, the fraction of chi _II component was 0.3.

(Preparation Examples 3 and 4) Fine Particles Examples of preparing cellulose composite fine particles containing titanium dioxide and a pigment will be described. Fine particles mixed with fine particle titanium dioxide (particle size 0.03 to 0.05 μm, manufactured by Ishihara Sangyo Co., Ltd.) are P-003, Bengala (manufactured by Nippon Benzaru), yellow iron oxide (manufactured by Nippon Bengara), black oxide Fine particles containing three iron (Dai Nippon Ink Co., Ltd.) pigments are designated as P-004. Prepare a mixture of finely divided titanium dioxide, sufficiently ground and mixed red iron oxide, yellow iron oxide, and black iron oxide. Further, a G2 sample prepared in Preparation Example 2 is prepared.

(1) 3.5 parts of fine titanium dioxide was added to 100 parts of the G2 sample, and mixed and homogenized for 10 minutes using a household food processor (knife cutter, rotation speed of 15,000 rpm or more).

(2) 2 parts of pigment powder previously blended at a ratio of 5: 14: 1 with red iron oxide: black iron oxide: black iron oxide
Mix into 100 parts of sample and mix it with a household food processor (knife cutter, rotation speed 15000 rpm or more)
For 10 minutes.

The dispersions of (1) and (2) were spray-dried with a spray-type spray dryer (SD-1000, manufactured by Tokyo Rikakiki Co., Ltd.) (sample supply amount 15 ml /
Min, spray nozzle diameter 0.5 mmφ, inlet temperature 155 ° C., outlet temperature about 90 ° C.) to obtain two fine particles. Table 1 shows the physical properties of the fine particles.

[0056]

[Table 1]

(Preparation Example 5) A preparation example of fine particles (P-005) containing a synthetic fragrance is shown. P-002 of Preparation Example 2
Fine particles and geraniol (alcohol-based synthetic perfume, manufactured by Ogawa Perfumery) are prepared. One part of geraniol is dissolved in one part of a mixture of propylene glycol and ethanol (mixing ratio 1: 4, weight ratio). This solution was added to P-002
It is sprayed to 100 parts of fine particles while stirring. 60 ℃
And dry for 30 minutes. These fine particles are designated as P-005.

(Example 1) Foundation (1) Talc: 12% (2) Kaolin: 10% (3) Titanium dioxide: 10% (4) Bengala: 0.5% (5) Yellow iron oxide: 1.4 (6) Black iron oxide: 0.1% (7) P-002: 8% (9) Solid paraffin: 3% (10) Microcrystalline wax: 4% (11) Beeswax: 2% (12) Vaseline: 10% (13) Lanolin acetate: 1% (14) Squalane: 5% (15) Isopropyl palmitate: 33% (16) Add appropriate amounts of antioxidants, fragrances, and preservatives as required <Production method> 9) to (15) are dissolved by heating. (1)-
(6) is sufficiently mixed and pulverized, and P-002 is further mixed. The powder portion is added to the dissolved oil phase while stirring. Degas after sufficiently kneading.

<Results> A viscous cream was obtained.
There was good rolling properties, and the feeling of use was refreshing.

(Example 2) Dentifrice (1) P-001: 45% (2) Silicic anhydride: 2% (3) Glycerin: 15% (4) Sodium carboxymethylcellulose: 1% (5) Carrageenan: 0 0.3% (6) Sodium lauryl sulfate: 1.5% (7) Purified water: residue <Production method> Put purified water and (3) into a vacuum mixer, and (4)
(5) is added and mixed and dissolved. This is P-001,
(2) and (6) are added and mixed until uniform, and then sufficiently degassed under reduced pressure. Flavoring agents, preservatives and the like may be added to the above components. A paste-like toothpaste was obtained, with mild abrasiveness and good feeling of use.

(Example 3) Scrub face wash (1) P-002: 10% (2) Stearic acid: 10% (3) Palmitic acid: 10% (4) Myristic acid: 12% (5) Lauric acid: 4% (6) Coconut oil: 2% (7) Potassium hydroxide: 6% (8) PEG 1500: 10% (9) Glycerin: 15% (10) Glycerol monostearate: 2% (11) POE (20) ) Sorbitan monostearic acid:
2% (12) Purified water: Residual (13) Add appropriate amounts of preservatives, chelating agents, fragrances, and pigments as necessary <Production method> (2) to (5), (6), (8), (9) ) Is heated and dissolved, and purified water in which (7) is dissolved in advance is added with stirring, followed by sufficient stirring. Next, (10) and (11) obtained by heating and dissolving were added, and finally P-002 was added.
Stir evenly. Cool slowly to room temperature.

<Results> A viscous liquid composition was obtained,
There was a gentle and good scrub effect.

(Example 4) Pre-shear lotion (1) Ethanol: 94% (2) Glyceryl tri-2-ethylhexanoate: 1% (3) 1,3-butylene glycol: 1% (4) Vitamin E acetate : Appropriate amount (5) P-005: 4% (6) Add a preservative as needed <Production method> Add (2) to (4) to ethanol, stir well, and add P-005 of (5) to this. And further stirring,
Degas.

<Results> A stable liquid composition was obtained, and the skin had good rolling properties.

Example 5 Foundation (1) Talc: 12% (2) Kaolin: 10% (3) Titanium dioxide: 10% (4) P-004: 10% (5) Solid paraffin: 3% (6) ) Microcrystalline wax: 4% (7) Beeswax: 2% (8) Vaseline: 10% (9) Lanolin acetate: 1% (10) Squalane: 5% (11) Isopropyl palmitate: 33% (12) Necessary Accordingly, appropriate amounts of antioxidants, fragrances, and preservatives are added. <Production method> (5) to (11) are heated and dissolved. (1)-
(3) is sufficiently mixed and pulverized, and P-004 is further mixed. The powder portion is added to the dissolved oil phase while stirring. Degas after sufficiently kneading.

<Results> A viscous cream was obtained. It had good rolling properties and skin covering properties, and had a refreshing feeling upon use.

(Example 6) Cream type foundation (1) P-003: 18% (2) Sericite: 5% (3) Kaolin: 4% (4) Bengala: 0.36% (5) Yellow iron oxide : 0.8% (6) Black iron oxide: 0.16% (7) Liquid paraffin: 5% (8) Decamethylcyclopentahexane: 12% (9) Polyoxyethylene-modified dimethylpolysiloxane: 4% (10 ) 1,3 butylene glycol: 5% (11) Polyoxyethylene sorbitan monostearate: 0.1% (12) Purified water: residue (13) Preservatives, stabilizers, fragrances, etc. are added as required .

<Production method> The aqueous phase of (10) to (13) was
After the mixture was heated to ℃ and stirred, it was sufficiently mixed and dispersed (2) to
The powder of (6) is added and the mixture is treated with a homomixer. Separately, the oil phases (7) to (9) are dissolved and added to the aqueous phase to which the powder has been added, followed by homomixer treatment. cooling,
After deaeration, finally add P-003 and stir until homogeneously dispersed.

<Results> A creamy composition was obtained and had good rolling properties on the skin.

[0070]

According to the present invention, cellulose fine particles and / or composite fine particles are used as a rolling agent, an abrasive, a moisturizing agent and the like, and a coloring agent and a sunscreen agent. An excellent novel liquid or creamy cosmetic can be provided.

[Brief description of the drawings]

FIG. 1 is a wide-angle X-ray diffraction pattern of a dried sample of cellulose fine particles.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuji Matsue 6-4100 Asahimachi, Nobeoka-shi, Miyazaki F-term in Asahi Kasei Kogyo Co., Ltd. 4C083 AA082 AA122 AB032 AB171 AB172 AB232 AB242 AB432 AB442 AC012 AC022 AC102 AC122 AC242 AC352 AC422 AC442 AC782 AD042 AD162 AD172 AD261 AD262 AD272 AD512 BB25 BB26 BB41 BB46 CC05 CC12 CC23 DD22 DD23 DD31 EE06 FF05

Claims (3)

[Claims] An average particle diameter is 0.2 to 20 μm,
In addition, L / D (where L represents the major axis of the cellulose fine particles or the cellulose composite fine particles, and D represents the minor axis) is 1/30 or less. Liquid or creamy cosmetic containing 0.0 to 40% by weight. 2. The cellulose constituting the fine particles has an average degree of polymerization (DP) of 100 or less, a fraction of cellulose I type crystal component of 0.1 or less, and a fraction of cellulose II type crystal component of 0.4 or less. The liquid or creamy cosmetic according to claim 1, which is: 3. The method according to claim 1, wherein the cellulose composite fine particles are particles obtained by dispersing or adsorbing at least one functional component selected from an ultraviolet shielding agent, a dye, a pigment, a silica compound, and a fragrance to cellulose. Liquid or creamy cosmetics.