JP4686354B2 - Liquid crystal cosmetic - Google Patents

Description

  The present invention relates to a cosmetic, and more particularly to a liquid crystal cosmetic.

The liquid crystal formed by a small amount of a surfactant and an aqueous carrier produces a multicolored rainbow-like color due to the light interference effect derived from the liquid crystal structure, and therefore has a very beautiful appearance. The application of has been attempted so far. As the surfactant, a combination of an anionic surfactant and a liquid lipophilic surfactant is usually used. Examples of the anionic surfactant include sodium lauryl sulfate, sodium polyoxyethylene lauryl sulfate, and lauryl. An alkyl sulfate or alkyl phosphate to which polyoxyethylene such as sodium phosphate and sodium polyoxyethylene lauryl phosphate may be added is used, and the liquid lipophilic surfactant is HLB 4-7. Nonionic surfactants having an oleic acid residue and / or an oleyl alcohol residue have been used ( see, for example, Patent Document 1, Patent Document 2, and Patent Document 3) . However, by adopting such a configuration, a liquid crystal composition having excellent color developability can be obtained. However, the stability is limited to 1 to 3 months, and the storage time becomes longer and the liquid crystal is converted into an emulsion. On the other hand, it was a general tendency to mutate into a cloudy rainbow-like composition without coloring. One of the causes of such a mutation is a system transition from a metastable system to a stable system, and the other is that a nonionic surfactant is oxidized to make it difficult to form a liquid crystal. It is said that. In order to prevent such oxidation, it is usually considered effective to add vitamin E. However, the addition of vitamin E to the liquid crystal system described above makes the system transition to an emulsion system, and is virtually impossible. Met. From this situation, it can be said that development of means for improving the stability of the liquid crystal system has been desired.

  On the other hand, a technique for adding a rock-like mineral to the cosmetic for the purpose of modifying the properties of the aqueous carrier of the cosmetic is already known. Examples of the rock-like mineral include barley stone, serpentine, precious gemstone Tourmaline and the like are known (see, for example, Patent Document 4, Patent Document 5, Patent Document 6, Patent Document 7, and Patent Document 8), but rock-like minerals improve the stability of chromogenic liquid crystals. Is not known at all, and it is not known at all that a cosmetic composition in a liquid crystal state and a rock-like mineral coexist.

  1) A nonionic surfactant having an oleic acid residue and / or an oleyl alcohol residue of HLB 4-7, and 2) a saturated fatty acid arginine soap having a linear or branched structure having 10 to 25 carbon atoms. A cosmetic composition in a liquid crystal state is not known at all, and a cosmetic prepared by filling the cosmetic composition in a cosmetic container together with barleystone and / or serpentine is not known at all.

JP 2005-283705 A JP 2005-132797 A JP 2002-255785 A JP 2004-323815 A JP 2005-206613 A JP 2001-151632 A JP-A-10-139671 JP 2001-122736 A

  The present invention has been made under such circumstances, and an object of the present invention is to provide a means for improving the stability of a liquid crystal system in a cosmetic composition in a liquid crystal state.

In view of such a situation, as a result of intensive research efforts for the means for improving the stability of the liquid crystal system in the cosmetic composition in the liquid crystal state, the present inventors have 1) the results of HLB 4-7. A cosmetic composition in a liquid crystal state comprising a nonionic surfactant having an oleic acid residue and / or an oleyl alcohol residue, and 2) a saturated fatty acid arginine soap having a linear or branched structure having 10 to 25 carbon atoms It has been found that the product is excellent in the stability of the liquid crystal state, and the oxidation stability can be further improved by the coexistence of barleystone and / or serpentine, and the present invention has been completed. That is, the present invention is as follows.
(1) 1) a nonionic surfactant having an oleic acid residue and / or oleyl alcohol residue of HLB 4-7, and 2) a saturated fatty acid arginine soap having a linear or branched structure having 10 to 25 carbon atoms. A cosmetic composition in a liquid crystal state, comprising:
(2) The nonionic surfactant having the oleic acid residue and / or oleyl alcohol residue of HLB 4-7 is selected from POE (1-5) oleic acid ester and POE (1-5) oleyl ether The cosmetic composition in a liquid crystal state according to (1), which is one type or two or more types.
(3) The saturated fatty acid arginine soap having a linear or branched structure having 10 to 25 carbon atoms is arginine laurate and / or arginine isostearate, (1) or (2) Cosmetic composition.
(4) In addition, 1,2-pentanediol, 1, 2-heptanediol, one to be selected from 及 beauty 1,2-decanediol is characterized by containing two or more, (1) -(3) Cosmetics composition given in any 1 paragraph.
(5) A cosmetic comprising a cosmetic container filled with the liquid crystal cosmetic composition according to any one of (1) to (4) together with barleystone and / or serpentine.

  According to the present invention, in a cosmetic composition in a liquid crystal state, a means for improving the stability of a liquid crystal system can be provided.

(1) Nonionic surfactant which is an essential component of the cosmetic composition of the present invention The cosmetic composition of the present invention is in a liquid crystal state and has an oleic acid residue and / or an oleyl alcohol residue of HLB 4-7. It is characterized by containing a nonionic surfactant as an essential component. Preferred examples of such nonionic surfactants include POE (1-5) oleate and POE (1-5) oleyl ether. Specific examples include POE (2) oleyl ether, POE (1) oleate and the like. Such a nonionic surfactant may contain only one species or may contain two or more species in combination. The content of such a nonionic surfactant necessary for forming a liquid crystal state is 0.5 to 5% by mass, more preferably 1 to 3% by mass , based on the total amount of the cosmetic composition. is there. If the amount is too small, there may be a solubilized system. If the amount is too large, an emulsion system may be formed.

(2) Fatty acid soap which is an essential component of the cosmetic composition of the present invention The cosmetic composition of the present invention is a saturated fatty acid arginine soap in a liquid crystal state and having a linear or branched structure having 10 to 25 carbon atoms. Is contained as an essential component. Preferred examples of the fatty acid constituting such soap include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and isostearic acid. Particularly preferred are arginine laurate and / or arginine isostearate. The molar ratio of fatty acid to arginine is preferably 10: 9 to 9:10. Such components, together with the pre-group nonionic surfactant, have an action of forming a liquid crystal state that is difficult to shift to an emulsion state. In order to form such a liquid crystal state, the arginine soap of the fatty acid can contain only one species, or can contain two or more species in combination. The preferable content of the component in the cosmetic composition of the present invention is 0.2 to 5% by mass, more preferably 0.5 to 3% by mass, based on the total amount of the cosmetic composition.

(3) Cosmetic composition of this invention The cosmetic composition of this invention contains the said essential component, It is a liquid crystal state, It is characterized by the above-mentioned. Whether or not it is in a liquid crystal state is determined by whether or not the cosmetic composition has a multicolored rainbow-like coloration due to interference colors. That is, in the composition of the cosmetic composition of the present invention, 1) a nonionic surfactant having an oleic acid residue and / or oleyl alcohol residue of HLB 4-7, and 2) a linear chain having 10 to 25 carbon atoms Or a saturated fatty acid arginine soap having a branched structure, in a composition satisfying two points, the composition having a multicolored rainbow-like coloration due to interference colors, wherein the light interference is derived from the liquid crystal structure And belong to the technical scope of the present invention.

In the cosmetic composition of the present invention, 1,2-pentanediol, 1,2-hexanediol, 1,2-heptanediol, 1,2-octanediol, and 1,2-in terms of imparting antiseptic power. It is preferable to contain one or more selected from decanediol. Such components do not affect the liquid crystal state while imparting antiseptic power. In addition, by adding such components, antiseptic power can be maintained without adding parabens such as methyl paraben, ethyl paraben, propyl paraben, and butyl paraben, which are components that easily shift the liquid crystal state to an emulsion state. It is preferable to take such a form. In such a form, it is preferable to add phenoxyethanol because the antiseptic power can be improved without affecting the liquid crystal state. One or more preferable contents selected from the 1,2-pentanediol, 1,2-hexanediol, 1,2-heptanediol, 1,2-octanediol and 1,2-decanediol Is 1 to 5% by mass, more preferably 2 to 4% by mass, based on the total amount of the cosmetic composition. The preferable content of phenoxyethanol is 0.1 to 1% by mass, more preferably 0.2 to 0.5% by mass, based on the total amount of the cosmetic composition .

The cosmetic composition of the present invention can contain optional components usually used in cosmetics. In addition to such components, the external preparation for skin of the present invention can contain optional components that are usually used in external preparations for skin within the range that does not impair the effects of the present invention, that is, the stabilization of the liquid crystal state. . Examples of such optional components, e.g., macadamia nut oil, Abou transient oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, cured Oils such as coconut oil, hydrogenated oil, molasses, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax, waxes; liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin , Hydrocarbons such as petrolatum, 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, isostearyl Higher alcohols such as alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, di-2-ethylhexanoic acid ethylene glycol, dicaprate neopentyl glycol, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, tri Synthetic ester oils such as trimethylolpropane isostearate and pentane erythritol tetra-2-ethylhexanoate; dimethylpolysiloxane, methylphenylpoly Linear polysiloxanes such as oxane and diphenylpolysiloxane; cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and 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; Anionic surfactants such as alkylsulfuric acid triethanolamine ether not classified into arginine soap; stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine Cationic surfactants such as oxides; imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy-2-nato Lithium salts, 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), hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (such as polyoxyethylene sorbitan monostearate), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid esters (POE-glycerin monoisostearate, etc.), POE fatty acid esters (POE dies) Allate), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl ether, 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 ester, alkyl glucoside, etc., not classified as essential components Polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanedio Polyhydric alcohols such as 1,4-hexanediol, 1,2-hexanediol and 1,2-octanediol; moisturizing components such as sodium pyrrolidonecarboxylate, lactic acid and sodium lactate; Mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate, etc . ; surface may be treated, bengara, yellow iron oxide , Black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments; surface treated pearlescent agents such as titanium mica, fish phosphorus foil, bismuth oxychloride; raked Red 202, Red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 2 Organic dyes such as No. 23, Orange No. 201, Red No. 213, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204; polyethylene powder, polymethyl methacrylate, nylon powder Organic powders such as organopolysiloxane elastomers; paraaminobenzoic acid UV absorbers; anthranilic acid UV absorbers; salicylic acid UV absorbers ; cinnamic acid UV absorbers ; benzophenone UV absorbers; Agents; UV absorbers such as 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole and 4-methoxy-4′-t-butyldibenzoylmethane; lower alcohols such as ethanol and isopropanol; Vitamin A or its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 geo Vitamin B such as kutanoate, vitamin B2 or derivatives thereof, vitamin B12, vitamin B15 or derivatives thereof; vitamin E such as α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D, vitamin H, Preferable examples include vitamins such as pantothenic acid, panthetin and pyrroloquinoline quinone; and antibacterial agents such as phenoxyethanol. Of these components, the oil component, surfactant component significantly affects the liquid crystal state, the content should be extremely small, is that preferably does not contain. In addition, it is preferable to use a water-soluble fragrance component such as water-soluble rose water, orange water, lavender water or the like. The external preparation for skin of the present invention can be produced by treating such components according to a conventional method. The cosmetic composition of the present invention thus obtained has a property that it exists stably in a liquid crystal state and hardly shifts to an emulsion state.

(4) Cosmetics of the present invention The cosmetics of the present invention are characterized in that the cosmetic composition of the present invention is filled in a cosmetic container together with barleystone and / or serpentine. Here, barleystone is a mineral classified as granite porphyry, a kind of granite that has slept on the seabed for hundreds of millions of years and absorbed seawater, and has a barley-like shape. The serpentine is a general term for antigolite, chrysotile and lizarite, and has a monoclinic or orthorhombic crystal system and a Mohs hardness of 2.5-4. These components already exist in commercial products, and such commercial products can be purchased and used. These components are formed into a shape having a diameter of 0.3 to 1 cm, and 1 to 5 pieces of cosmetic containers are submerged in the bottom of the container and filled with the cosmetic composition. It is preferable to make a cosmetic. By taking such a form, the oxidative factor in the cosmetic composition can be removed by such a mineral component, and the transition from the liquid crystal state to the emulsion state is suppressed by oxidizing the nonionic surfactant. be able to. Thereby, the storage stability is remarkably improved.

  The cosmetic composition of the present invention is preferably applied to a lotion cosmetic composition, and is preferably filled in a container that can enjoy the beautiful appearance of the cosmetic composition. As a container that can enjoy the beautiful appearance, a colorless and transparent glass container can be suitably exemplified.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

  According to the formulation shown in Table 1 below, cosmetic composition 1 which is the cosmetic composition of the present invention was produced. That is, the prescription ingredients were heated to 80 ° C., stirred and uniformly adjusted, and then stirred and cooled to obtain a cosmetic composition 1.

<Test Example 1>
Comparative Example 1 in which the POE (2) oleyl ether of the cosmetic composition 1 was replaced with POE (2) stearyl ether, and Comparative Example 2 in which lauric acid and arginine were replaced with sodium lauryl sulfate were prepared. The state after storage for 1 month at 20 ° C, 40 ° C was observed. The results are shown in Table 2. This shows that the cosmetic composition of the present invention stably exists in the liquid crystal state.

  In the same manner as in Example 1, cosmetic composition 2 as a cosmetic composition of the present invention was prepared according to the formulation in Table 3. This is the state immediately after storage, the state after storage at 40 ° C. for 1 month, the state after storage at 20 ° C. for 1 month, and the state after storage at 5 ° C. for 1 month. Was confirmed.

  In the same manner as in Example 1, cosmetic composition 3 as a cosmetic composition of the present invention was prepared according to the formulation shown in Table 4. This is the state immediately after storage, the state after storage at 40 ° C. for 1 month, the state after storage at 20 ° C. for 1 month, and the state after storage at 5 ° C. for 1 month. Was confirmed.

The stability of the liquid crystal state of cosmetic compositions 1 to 3 in the presence or absence of barleystone or serpentine was examined under storage conditions of 40 ° C. for 3 months. That is, (corresponding to the cosmetic of the present invention) in the cosmetic compositions 1-3 that put healstone two tablets, one containing the serpentine two tablets (corresponding to the cosmetic of the present invention) both with and without added A sample was prepared, stored at 40 ° C. for 3 months, and the state was observed. The results are shown in Table 5 . From this, it can be seen that the stability of the liquid crystal state is further improved by the introduction of barleystone and serpentine.

  The present invention can be applied to beautiful cosmetics.

Claims (4)

1) 1 type or 2 or more types of nonionic surfactant selected from POE (1-5) oleic acid ester and POE (1-5) oleyl ether , 2) C10- C25 linear or A cosmetic composition in a liquid crystal state, comprising a saturated fatty acid arginine soap having a branched structure. 2. The cosmetic composition according to claim 1 , wherein the saturated fatty acid arginine soap having a linear or branched structure having 10 to 25 carbon atoms is arginine laurate and / or arginine isostearate. Furthermore, 1 type or 2 types or more selected from 1, 2- pentanediol, 1, 2- heptane diol, and 1, 2- decanediol are contained, The 1 or 2 characterized by the above-mentioned. Cosmetic composition. A cosmetic comprising a cosmetic container filled with the liquid crystal cosmetic composition according to any one of claims 1 to 3 together with barleystone and / or serpentine.