JP2009029718A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic hardly having stickiness regardless of having high adhesiveness, and excellent in the adhesiveness of the cosmetic, uniformity of a cosmetic film, sustained effects of the cosmetic film and temporal stability. <P>SOLUTION: The cosmetic comprises a propylene homopolymer having 25,000-50,000 weight average molecular weight (Mw) and 70-90°C melting point. The propylene homopolymer can be synthesized by using a metallocene catalyst, and has a molecular weight distribution (Mw/Mn) of ≤3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cosmetic containing a specific propylene homopolymer, and more specifically, by blending a high molecular weight propylene homopolymer with a low melting point, despite having high adhesion to the skin, The present invention relates to a cosmetic material that has no stickiness and has an excellent makeup sustaining effect.

Conventionally, cosmetics have been used in order to increase adhesion to the skin and enhance the durability of the cosmetic film, such as paste oils such as heavy liquid isoparaffin and petrolatum, solid oils such as candelilla wax, and rosin acids. Resin components such as resin and maleic acid-modified ester gum have been blended (see, for example, Patent Documents 1 and 2).
On the other hand, as in the present invention, the blended polyolefins in cosmetics are blended with α-olefin oligomer which is highly viscous oil, blended with waxes such as polyethylene and ethylene / propylene copolymer ( For example, Patent Document 3), a blend of polyolefin resin powder (for example, Patent Document 4), a blend of ethylene and / or propylene wax synthesized in the presence of a metallocene catalyst (for example, Patent Document 5) ) Etc. are known.

JP-A-9-235210 JP 2000-302623 A JP 2001-072537 A JP 2006-169207 A JP 2006-342163 A

However, those containing the above paste oils and resin components can improve the adhesion to the skin and the durability of the cosmetic film, but when mixed in a large amount, it may feel sticky during use or in cosmetics. It was difficult to uniformly disperse and the uniformity of the decorative film was sometimes lost. In addition, when blended with conventional low molecular weight polyolefin wax, the sustainability of the decorative film can be improved, but when blended in a large amount, the elongation at the time of application deteriorates and the adhesion to the skin also decreases. Had problems. Furthermore, blended polyolefin resin powder is excellent in feeling of use such as elongation and moldability, but has poor adhesion to the skin, and attempts to blend these resins evenly dissolved in oil. In some cases, heating at 150 ° C. or higher is generally required, which may cause stability problems such as solid matter precipitation during cooling and gelation over time. In addition, the blend of ethylene and / or propylene wax synthesized in the presence of the above metallocene catalyst has been tried to improve the adhesion by increasing the molecular weight of the wax, but is not satisfactory and is not sticky. In addition to the poor usability and high melting point of the wax, it is difficult to uniformly disperse in cosmetics, the uniformity of the cosmetic film is poor, and solid matter precipitation and gelation occur over time. There was a problem.
For this reason, there has been a demand for the development of a cosmetic that has excellent adhesion to the skin and persistence of the cosmetic film, is non-sticky, has a uniform cosmetic film, and good stability over time. That is, an object of the present invention is to provide a cosmetic material that is excellent in uniformity of the cosmetic film, the effect of sustaining the cosmetic film, and the stability over time although it has high adhesion.

  As a result of intensive investigations, the inventors have formulated a specific propylene homopolymer in cosmetics, so that it has excellent adhesion to the skin, is non-sticky, and has a uniform makeup film, makeup persistence and stability over time. The present invention has been completed by finding that a cosmetic can be provided.

  That is, the present invention includes (1) a cosmetic comprising a propylene homopolymer having a weight average molecular weight (Mw) of more than 25,000 and not more than 50000, and a melting point of not less than 70 ° C. and not more than 90 ° C., and (2) The cosmetic according to (1) above, wherein the propylene homopolymer is a propylene homopolymer synthesized using a metallocene complex, and (3) the molecular weight distribution by gel permeation chromatography (3) Mw / Mn) is a propylene homopolymer having 3 or less, and the cosmetic according to the above (1) or (2) or (4) propylene homopolymer is 0.1 to 50 with respect to the entire cosmetic. The cosmetic according to any one of (1) to (3), wherein the cosmetic is contained in mass%.

  The cosmetics of the present invention are conventionally used in cosmetics, and by incorporating a high-molecular-weight propylene homopolymer having a low melting point, the usability (non-stickiness), the adhesiveness of the cosmetics, the cosmetic film Excellent in uniformity, long-lasting effect and stability over time.

Hereinafter, the present invention will be described in detail.
The present invention is a cosmetic containing a propylene homopolymer having a weight average molecular weight (Mw) of more than 25,000 and 50,000 or less and a melting point of 70 ° C. or more and 90 ° C. or less.

  The range of the weight average molecular weight (Mw) of the propylene homopolymer in the cosmetic of the present invention is more than 25000 and 50000 or less, and a preferred range is more than 25000 and 40000 or less. When the weight average molecular weight (Mw) is 25000 or less, stickiness may occur. When the weight average molecular weight (Mw) is more than 50000, the melt fluidity is lowered, and the adhesion to the skin may be poor. The weight average molecular weight (Mw) was calculated using a GPC measurement apparatus (column: TOSO GMHHR-H (S) HT, detector: RI detector for liquid chromatogram WATERS 150C), and the detailed measurement conditions were 1 as a solvent. , 2,4-trichlorobenzene, measurement temperature is 145 ° C., flow rate is 1.0 ml / min, sample concentration: 2.2 mg / ml, injection amount is 160 microliters, calibration curve is Universal Calibration, analysis program: HT-GPC (Ver. 1.0).

  The range of the melting point of the propylene homopolymer in the cosmetic of the present invention is in the range of 70 ° C to 90 ° C, and a preferable range is 70 ° C to 80 ° C. If the melting point is less than 70 ° C, the adhesion to the skin may be reduced, and if it exceeds 90 ° C, the solubility is inferior, so when blended in cosmetics in general, crystal precipitation, poor handling and feel There is a problem that the weight of the material appears remarkably, which is not preferable. The melting point was measured by using a differential scanning calorimeter (DSC), holding the sample at −10 ° C. for 5 minutes in a nitrogen atmosphere, and then raising the temperature at 10 ° C./min. The melting point (Tm) is defined as the peak top of the peak observed on the side.

  In addition, the polymerization method of the propylene homopolymer in the cosmetic of the present invention is not particularly limited, and any method such as a slurry polymerization method, a gas phase polymerization method, a bulk polymerization method, a solution polymerization method, or a suspension polymerization method may be used. However, from the viewpoint of molecular weight distribution, a method of synthesis using a metallocene complex is preferable, and for example, it can be produced based on the method described in International Publication WO2003 / 091289.

  The propylene homopolymer in the cosmetic of the present invention preferably has a molecular weight distribution (Mw / Mn) measured by GPC method of 3 or less, more preferably 2.5 or less, and particularly preferably 2 or less. When the molecular weight distribution (Mw / Mn) is 3 or less, stickiness can be further suppressed.

  The amount of the propylene homopolymer in the cosmetic of the present invention in the cosmetic is not particularly limited as long as the effect of the present invention is exhibited, but is 0.1 to 50% by mass (hereinafter simply referred to as “%”). The range of is preferable. For example, in skin care products and hair care products, it is preferable to add about 1 to 2% in the product for the purpose of imparting adhesiveness, etc. Also, glossiness and makeup sustainability of lip gloss, stick lipstick, mascara, etc. In point makeup products that require a high level of skin care products, it is preferable to increase the blending amount by about 2 to 20% compared to skin care products.

In addition to the above essential components, the cosmetics of the present invention can be formulated by selecting the following components that are usually blended in cosmetics within a range that does not interfere with the effects of the present invention.
(1) Oily components such as hydrocarbon oils, ester oils, vegetable oils, hydrated oils, silicone oils, silicone derivatives, etc. (2) Powders such as inorganic pigments, organic pigments and extender pigments, and their silicone-treated products and fluorine compound-treated materials Products (3) Surfactants (4) Water, polyhydric alcohols, lower alcohols, water-soluble polymers, aqueous components such as humectants (5) Others: film forming agents, sugars, UV absorbers, antioxidants, antiseptics Agents, enzymes such as lipase and protease, various drugs such as resorcin and sulfur, refreshing agents, pigments, fragrances, etc.

  The oily components include hydrocarbons, fats and oils, waxes, oils, waxes, waxes, oils, vegetable oils, synthetic oils and other solid oils, semi-solid oils, liquid oils, volatile oils, etc. , Hardened oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorinated oils, lanolin derivatives, oily gelling agents and the like. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyethylene wax, ethylene / propylene copolymer, paraffin wax, montan wax, Fischer-Tropsch wax, polyisobutylene, polybutene, ceresin wax, ozokerite wax, mole, Fats and oils such as olive oil, castor oil, mink oil, macadamian nut oil, waxes such as beeswax, gay wax, carnauba wax, candelilla wax, jojoba oil, cetyl 2-ethylhexanoate, isostearyl lactate, octyldodecyl lactate Oleyl lactate, stearyl lactate, glyceryl diisostearate, diglyceryl triisostearate, diisostearyl malate, isopropyl myristate, isopropyl palmitate, myristine Octyldodecyl, rosin acid pentaerythritol ester, neopentyl glycol dioctanoate, neopentyl glycol dioctanoate, cholesterol fatty acid ester, phytosterol fatty acid ester, triglyceride, stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid , Fatty acids such as oleic acid, higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, and behenyl alcohol, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetra Siloxane, trimethylsiloxysilicic acid, high polymerization degree methylphenyl polysiloxane, cross-linked methylpoly Loxane, polyoxy-modified organopolysiloxane, cross-linked polyether-modified methyl polysiloxane, methacryl-modified polysiloxane, stearyl-modified methyl polysiloxane, oleyl-modified methyl polysiloxane, behenyl-modified methyl polysiloxane, polyvinylpyrrolidone-modified methyl polysiloxane, high degree of polymerization Dimethylpolysiloxane, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane co-homopolymer, alkoxy-modified polysiloxane, cross-linked organopolysiloxane, silicone such as fluorine-modified polysiloxane, perfluorodecane, perfluorooctane, perfluoro Fluorine oils such as polyether, lanolin, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin derivatives such as lanolin alcohol Body, dextrin octanoate, dextrin laurate, dextrin palmitate, dextrin myristate, dextrin stearate, dextrin behenate, palm oil fatty acid dextrin, (palmitic acid / octanoic acid) dextrin, sucrose fatty acid ester, starch fatty acid ester, isostearic acid Examples thereof include oily gelling agents such as aluminum, potassium stearate and 12-hydroxystearic acid, and these can be used alone or in combination.

  As a powder component, if it is a powder used as a powder generally used in cosmetics, a spherical shape, a plate shape, a needle-like shape, a haze shape, a fine particle, a particle size such as a pigment class, a porous material, It is not particularly limited by the particle structure such as non-porous, and examples thereof include inorganic powders, glitter powders, organic powders, pigment powders, metal powders, and composite powders. Specifically, white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, barium sulfate, iron oxide, carbon black, titanium / titanium oxide sintered product, chromium oxide, chromium hydroxide, bitumen, ultramarine blue, etc. Colored inorganic pigments, talc, muscovite, phlogopite, saucite, biotite, synthetic mica, sericite (sericite), synthetic sericite, kaolin, silicon carbide, bentonite, smectite, silicic anhydride, aluminum oxide, magnesium oxide White body powders such as zirconium oxide, antimony oxide, diatomaceous earth, aluminum silicate, magnesium aluminum silicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, Titanium dioxide-coated mica, titanium dioxide-coated bisoxychloride , Iron oxide mica titanium, bituminized mica titanium, carmine-treated mica titanium, bismuth oxychloride, fish scale foil, polyethylene terephthalate / aluminum / epoxy laminated powder, polyethylene terephthalate / polyolefin laminated film powder, polyethylene terephthalate / polymethyl methacrylate laminated film powder Glittering powder such as polyamide resin, polyethylene resin, polyacrylic resin, polyester resin, fluorine resin, cellulose resin, polystyrene resin, copolymer resin such as styrene-acrylic copolymer resin, polypropylene resin, etc. , Organic polymer resin powder such as silicone resin and urethane resin, organic low molecular weight powder such as zinc stearate and N-acyl lysine, natural organic powder such as silk powder and cellulose powder, Red No. 201, Red 2 Organic pigment powder such as No. 2, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Red No. 3, Red No. 104, Red No. 106, Orange Organic pigment powders such as zirconium, barium or aluminum lake such as No. 205, Yellow No. 4, Yellow No. 5, Green No. 3 and Blue No. 1 or metal powder such as aluminum powder, gold powder and silver powder, fine particle titanium oxide coating Mica titanium, fine particle zinc oxide coated mica titanium, barium sulfate coated mica titanium, composite powders such as titanium oxide-containing silicon dioxide, zinc oxide-containing silicon dioxide, etc., and these powders include one or more of them. It can be used, and further composites may be used.

  As the surfactant, any surfactant that is generally used in cosmetics can be used. Nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, etc. Is mentioned. For example, glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyalkylene alkyl co-modified Examples thereof include organopolysiloxane, polyether-modified organopolysiloxane, and lecithin, and one or more of them can be used.

  The aqueous component may be any component as long as it is soluble in water and water. In addition to water, for example, lower alcohols such as ethyl alcohol and butyl alcohol, propylene glycol, 1,3-butylene glycol, dipropylene glycol And glycols such as polyethylene glycol, glycerols such as glycerin, diglycerin and polyglycerin, and plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender and rose. Examples of water-soluble polymers include guar gum, sodium chondroitin sulfate, sodium hyaluronate, gum arabic, sodium alginate, carrageenan, and other semi-synthetic materials such as methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, carboxyvinyl polymer, A synthetic system such as an alkyl-added carboxyvinyl polymer, polyvinyl alcohol, polyvinyl pyrrolidone, or sodium polyacrylate can be used, and one or more of them can be used. Other humectants such as protein, mucopolysaccharide, collagen, elastin, keratin, etc. can also be contained.

Examples of the antioxidant include α-tocopherol and ascorbic acid. Examples of the beauty component include vitamins, anti-inflammatory agents and herbal medicines. Examples of the preservative include paraoxybenzoic acid ester and phenoxyethanol.
Examples of the ultraviolet absorber include benzophenone, PABA, cinnamic acid, salicylic acid, 4-tert-butyl-4′-methoxydibenzoylmethane, oxybenzone, and the like.

  The dosage form of the cosmetic of the present invention is not particularly limited, and examples thereof include powder cosmetics, oily cosmetics, oil-in-water emulsified cosmetics, water-in-oil emulsified cosmetics, and the form is liquid, powdery , Solid, rod, emulsion, cream and the like. Further, the cosmetics of the present invention are sunscreens, milky lotions, creams, beauty liquids, packs, hair styling agents, hair cosmetics and other face, limbs, basic cosmetics for the body, foundation, white powder, blusher, lipstick, eye shadow, It can be applied to makeup cosmetics such as eyebrow, eyeliner, mascara, concealer, whitening powder, body powder, antiperspirant powder, etc.

  EXAMPLES Next, although an Example is given and this invention is demonstrated still in detail, this invention is not limited at all by these. In Examples, unless otherwise specified,% means mass%.

[Production Example 1]
Propylene homopolymer was produced in the same manner as described in International Publication WO2003 / 091289. The melting point of the propylene homopolymer determined by the above method was 80 ° C., the weight average molecular weight (Mw) was 30000, and the molecular weight distribution (Mw / Mn) was 2.

[Examples 1 to 3, Comparative Examples 1 and 2: Stick-shaped lipstick]
The stick-shaped lipsticks having the formulations shown in Table 1 are manufactured by the following manufacturing method, and the followings are about usability (non-stickiness), cosmetic adhesiveness, cosmetic film uniformity, cosmetic film sustaining effect and stability over time. The method was evaluated. The results are also shown in Table 1.

(Production method)
A: Components 1 to 8 are uniformly dissolved and mixed at 100 ° C.
B: Components 9 to 14 are added to component A and mixed uniformly.
C: B was poured into a container and cooled to obtain a stick-like lipstick.

(Evaluation methods)
The following evaluation items were evaluated by the following methods.
(Evaluation item)
I. Usability (no stickiness)
B. Adhesiveness of cosmetics c. Uniformity of decorative film d. To the lasting effect of the cosmetic film. Stability over time (i) to (ii), each sample is subjected to a use test by 20 specialist panels, and each panel member evaluates it according to the following 6 absolute ratings and gives a score. The average value was calculated and determined according to the following four-stage criteria. In addition, about the lasting effect of D makeup | decoration film, each sample was apply | coated to the lip, the normal life was made to have the panel, and the sustainability of the makeup film after 6 hours was evaluated.
To determine the stability over time, the samples were allowed to stand for 6 months at room temperature and 40 ° C., and then the appearance of each sample was observed and evaluated according to the following four-stage evaluation criteria, compared with the time of preparation. went.

<Evaluation of usability (non-stickiness), adhesion of cosmetics, uniformity of cosmetic film, sustained effect of cosmetic film>
Absolute Evaluation Criteria (Score): (Evaluation)
6 points: very good 5 points: good 4 points: slightly good 3 points: normal 2 points: slightly bad 1 point: bad

4-step criteria (Judgment): (Average score)
◎: More than 5 points: Very good ○: More than 3 points, 5 points or less: Good △: More than 1 point, 3 points or less: Slightly poor ×: 1 point or less: Bad

<Evaluation of stability over time>
(Judgment): (Evaluation)
◎: There is no difference between the product left at room temperature and the product left at 40 ℃, and the lipstick is not bent ○: The product left at 40 ℃ is slightly bent, but it does not touch the outer cylinder of the container △: Product left at 40 ℃ Is obviously bent lipstick (it will stick to the outer tube of the container)
×: Lipstick is broken at 40 ° C

(Evaluation)
As is apparent from the results in Table 1, the stick-shaped lipsticks of Examples 1 to 3 of the present invention are more smoothly spread and non-sticky than the stick-shaped lipsticks of Comparative Examples 1 and 2, and have excellent adhesion. It was excellent in all of the uniformity of the decorative film, the long-lasting effect of the decorative film, and the stability over time. On the other hand, in Comparative Example 1 in which only the low molecular weight wax was blended, a satisfactory product was not obtained particularly in terms of adhesiveness of the cosmetic. Moreover, in the comparative product 2 containing the conventional resin component, since the adhesiveness of the cosmetic is too strong, a satisfactory product cannot be obtained in terms of usability (non-stickiness) and uniformity of the cosmetic film.

[Example 4: Latex]
(Ingredient) (%)
1. Stearyl alcohol 2
2. Propylene homopolymer described in Production Example 1 1
3. Vaseline 3
4). Glyceryl tri-2-ethylhexanoate 5
5). Titanium oxide 2
6). Mica titanium 2
7). Sodium stearate 1
8). Carboxyvinyl polymer 0.1
9. 1,3-butylene glycol 10
10. Preservative appropriate amount11. Perfume appropriate amount 12. Purified water remaining

(Production method)
A. Ingredients 1-6 are heated to 75 ° C. and mixed uniformly.
B. Ingredients 7-9, 12 are heated to 75 ° C. and mixed uniformly.
C. Add A to B and emulsify.
D. C was cooled, components 10 and 11 were added, and an emulsion was obtained.
(Evaluation)
The emulsion of Example 4 was an emulsion having a smooth elongation and spread, no stickiness, moderate adhesion and lasting effect, and good stability over time.

[Example 5: Water-in-oil type sunscreen]
(Ingredient) (%)
1. Zinc oxide 2
2. Dimethylpolysiloxane treated fine particle titanium oxide 5
3. Tri (capryl / capric acid) glyceryl 5
4). Glyceryl tri-2-ethylhexanoate 3
5). Octyl palmitate 3
6). 2-Ethylhexyl paramethoxycinnamate 10
7). Decamethylcyclopentasiloxane 10
8). PEG-9 polydimethylsiloxyethyl dimethicone 1.8
9. Propylene homopolymer described in Production Example 1 3
10. Preservative appropriate amount11. Sodium chloride 0.3
12 Purified water remaining amount 13. Dipropylene glycol 5
14 Ethanol 5
15. Perfume

(Production method)
A. After components 3 and 4 are heated and dissolved, components 1 and 2 are added and dispersed uniformly with a roller.
B. Ingredients 5 to 10 are dissolved at 70 ° C., then A is added at 60 ° C. and uniformly mixed and dissolved.
C. Components 11 to 13 are mixed and dissolved, and then added to B at 60 ° C. to emulsify.
D. Components 14 and 15 were added to C and mixed uniformly to obtain a water-in-oil sunscreen.
(Evaluation)
The sunscreen cosmetic of Example 5 has a high sunscreen effect, and is good in any of non-stickiness, adhesion of the cosmetic, uniformity of the cosmetic film, long-lasting effect of the cosmetic film and stability over time. It was a fee.

[Example 6: Powder foundation]
(Ingredient) (%)
1. Dimethylpolysiloxane treated talc 30
2. Mica treated with dimethylpolysiloxane 15
3. Dimethylpolysiloxane-treated mica titanium oxide 15
4). 4. Sericite treated with dimethylpolysiloxane Synthetic phlogopite 5
6). Yellow iron oxide 2
7). Bengala 0.5
8). Black iron oxide 0.2
9. Preservative appropriate amount10. Propylene homopolymer described in Production Example 1 2
11. Liquid paraffin 3
12 Dimethylpolysiloxane 3
13. Glyceryl 2-ethylhexanoate 2
14 Perfume

(Production method)
A. Ingredients 1-9 are uniformly dispersed at 75 ° C. in a Henschel mixer (Mitsui Miike).
B. Ingredients 10-13 are heated to 65 ° C. and mixed and dissolved uniformly.
C. While stirring A with a Henschel mixer, B and 14 are added and dispersed uniformly.
D. C is pulverized with a pulverizer.
E. D was filled into a metal pan and compression molded to obtain a powder foundation.
(Evaluation)
The powder foundation of Example 6 spreads smoothly when applied to the skin, and in any of usability (non-stickiness), adhesiveness of cosmetics, uniformity of the cosmetic film, long-lasting effect of the cosmetic film and stability over time Was also a good powder foundation.

Claims (4)

  A cosmetic comprising a propylene homopolymer having a weight average molecular weight (Mw) of more than 25,000 and 50,000 or less and a melting point of 70 ° C or higher and 90 ° C or lower.   The cosmetic according to claim 1, wherein the propylene homopolymer is a propylene homopolymer synthesized using a metallocene complex.   The cosmetic according to claim 1 or 2, wherein the propylene homopolymer is a propylene homopolymer having a molecular weight distribution (Mw / Mn) by gel permeation chromatography of 3 or less. The cosmetic according to any one of claims 1 to 3, wherein the propylene homopolymer is contained in an amount of 0.1 to 50 mass% with respect to the entire cosmetic.