UV shielding composition

Abstract

To provide a composition that can have an enhanced SPF value, and good fluidity.SOLUTION: The present invention relates to a composition comprising: (a) at least one oil; (b) at least one solid lipophilic UV filter; (c) at least one C1-3 monoalcohol; and (d) at least one polyamide polycondensate, wherein the amount of the (c) C1-3 monoalcohol in the composition is 10 mass% or more relative to the total mass of the composition, and the mass ratio of the amount of the (d) polyamide polycondensate to the amount of the (a) oil in the composition is 0.15 or less, preferably 0.14 or less, and more preferably 0.13 or less. The composition according to the present invention can have an enhanced SPF value, and good fluidity.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a composition capable of effectively shielding UV rays.

Background Art

[0002] Generally, UV filters are utilized to provide protection from UV (ultraviolet) rays. Many sunscreen compositions intended to protect the skin from UV-A and / or UV-B have been proposed heretofore.

[0003] These sunscreen compositions often take the form of oil-in-water emulsions or water-in-oil emulsions of gels or non-aqueous products containing one or more insoluble and / or liposoluble and / or water-soluble, organic and / or inorganic UV filters at various concentrations that can selectively absorb harmful UV irradiation. These UV filters and their amounts are selected as a function of the desired ultraviolet protection factor (SPF).

[0004] The ultraviolet protection factor (SPF) mathematically represents the ratio of the dose of UV irradiation required to reach the erythema induction threshold using a UV shielding agent to the dose of UV irradiation required to reach the erythema induction threshold without using a UV shielding agent.

[0005] Heretofore, several prior art documents regarding sunscreen compositions containing SPF boosters such as hollow particles to enhance the UV protection effect have been published. However, there is a need for compositions having an increased ultraviolet protection factor, which can be represented by a higher UV absorption rate of the composition.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

[0007] [Non-Patent Document 1] Walter Noll, "Chemistry and Technology of Silicones" (1968), Academic Press [Non-Patent Document 2] Cosmetics and Toiletries, Vol. 91, January 1976, pp. 27 - 32, Todd & Byers, Volatile Silicone Fluids for Cosmetics [Non-Patent Document 3] ASTM Standard 445 Appendix C [Summary of the Invention] [Problems to be Solved by the Invention]

[0008] An object of the present invention is to provide a composition having an increased SPF value and good fluidity. [Means for Solving the Problems]

[0009] The above object of the present invention is achieved by (a) at least one oil, and (b) at least one solid lipophilic UV filter, and (c) at least one C1~3 a monoalcohol and (d) at least one polyamide polycondensate and a composition comprising: (c) C in the composition 1~3 the amount of the monoalcohol is 10% by mass or more based on the total mass of the composition, the mass ratio of the amount of (d) polyamide polycondensate / (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less, can be achieved by the composition.

[0010] (a) The oil can be selected from ester oils and liquid lipophilic UV filters.

[0011] The ester oil can be selected from the group consisting of isopropyl myristate, diisopropyl sebacate, isopropyl lauroyl sarcosinate, dicaprylyl carbonate, alkyl (C12 - 15) benzoate, and mixtures thereof.

[0012] The liquid lipophilic UV filter can be selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

[0013] The amount of (a) oil in the composition according to the present invention may be in the range of 10% by mass to 60% by mass, preferably 20% by mass to 55% by mass, more preferably 30% by mass to 50% by mass based on the total mass of the composition.

[0014] (b) The solid lipophilic UV filter can be selected from the group consisting of ethylhexyl triazone, butyl methoxybenzoyl methane, droxmetrizole trisiloxane, bis - ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

[0015] The amount of (b) solid lipophilic UV filter in the composition according to the present invention may be in the range of 1% to 30% by mass, preferably 2% to 25% by mass, more preferably 3% to 20% by mass, based on the total mass of the composition.

[0016] (c) C 1~3 The monoalcohol may be ethanol.

[0017] The (c) C 1~3 The amount of monoalcohol in the composition according to the present invention may be in the range of 20% to 60% by mass, preferably 30% to 55% by mass, more preferably 40% to 50% by mass, based on the total mass of the composition.

[0018] (d) The polyamide polycondensate may be an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

[0019] The amount of (d) polyamide polycondensate in the composition according to the present invention may be in the range of 1.5% to 7% by mass, preferably 2.0% to 6.5% by mass, more preferably 2.5% to 6.0% by mass, based on the total mass of the composition.

[0020] The composition according to the present invention may be anhydrous.

[0021] The composition according to the present invention may be a cosmetic composition, preferably a UV-shielding cosmetic composition, more preferably a UV-shielding skin cosmetic composition.

[0022] The present invention also relates to a beauty method for keratinous substances, comprising the step of applying the composition according to the present invention onto the keratinous substances.

[0023] The present invention also (a) at least one oil and (b) at least one solid lipophilic UV filter and (c) at least one C 1~3 monoalcohol and The use of (d) at least one polyamide polycondensate in a composition to improve the UV shielding ability of the composition, provided that (c) C in the composition 1~3 the amount of the monoalcohol is 10% by mass or more based on the total mass of the composition, also relates to the use wherein the mass ratio of the amount of (d) polyamide polycondensate / (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

Mode for Carrying Out the Invention

[0024] As a result of intensive studies, the present inventors have found that it is possible to provide a composition having an increased SPF and good fluidity.

[0025] Therefore, one aspect of the present invention is (a) at least one oil, and (b) at least one solid lipophilic UV filter, and (c) at least one C 1~3 monoalcohol, and (d) at least one polyamide polycondensate A composition comprising: (c) C in the composition 1~3 the amount of the monoalcohol is 10% by mass or more based on the total mass of the composition, wherein the mass ratio of the amount of (d) polyamide polycondensate / (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0026] In the composition according to the present invention, the (d) polyamide polycondensate can act as an SPF booster. The SPF value of the composition according to the present invention can be greater than that of a composition that is the same as the composition according to the present invention except that the composition does not contain the (d) polyamide polycondensate. Therefore, the composition according to the present invention can have an increased SPF value. Accordingly, the composition according to the present invention can effectively shield UV rays.

[0027] However, too large an amount of (d) polyamide polycondensate may act adversely. Therefore, in the composition according to the invention, the amount of (d) polyamide polycondensate is limited such that the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0028] On the other hand, the composition according to the invention can have good fluidity such as low viscosity, and (c) C in the composition in an amount of 10% by mass or more based on the total mass of the composition 1~3 can have a good texture such as crispness due to the presence of the monoalcohol.

[0029] Moreover, the composition according to the invention can also be stable so that no crystals of the (b) solid lipophilic UV filter are observed over time.

[0030] Therefore, the composition according to the invention is useful as a cosmetic composition, preferably a UV-shielding cosmetic composition, more preferably a UV-shielding skin cosmetic composition.

[0031] Hereinafter, the composition according to the invention will be described in more detail.

[0032] [Composition] The composition according to the invention comprises (a) at least one oil, and (b) at least one solid lipophilic UV filter, and (c) at least one C 1~3 monoalcohol, and (d) at least one polyamide polycondensate and the amount of (c) C 1~3 monoalcohol in the composition is 10% by mass or more based on the total mass of the composition, and the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0033] (Oil) The composition according to the present invention contains (a) at least one oil. A single type of oil may be used, or two or more different types of oils may be used in combination.

[0034] As used herein, "oil" means a fatty compound or fatty substance in the form of a liquid or paste (non-solid) at room temperature (25 °C) under atmospheric pressure (760 mmHg). As oils, those commonly used in cosmetics can be used alone or in combinations thereof. These oils may be volatile or non-volatile, preferably non-volatile.

[0035] (a) The oil may be a non-polar oil such as a hydrocarbon oil or a silicone oil; a polar oil such as a vegetable oil or an animal oil, and an ester oil or an ether oil; or a mixture thereof.

[0036] (a) The oil can be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils and hydrocarbon oils.

[0037] Examples of vegetable oils that can be mentioned are, for example, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, southernwood oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0038] Examples of synthetic oils that can be mentioned are alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0039] The ester oil is preferably a saturated or unsaturated, straight-chain or branched C1-C 26 aliphatic monoacid or polyacid and a saturated or unsaturated, straight-chain or branched C1-C 26It is a liquid ester with an aliphatic monoalcohol or polyalcohol, and the total number of carbon atoms of these esters is 10 or more.

[0040] Preferably, in the ester of the monoalcohol, at least one of the alcohol and acid from which the ester of the present invention is derived is branched.

[0041] Examples of the monoester of a monoacid and a monoalcohol include ethyl palmitate, ethylhexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristate such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, and isostearyl neopentanoate.

[0042] C4 - C 22 Esters of dicarboxylic acids or tricarboxylic acids with C1 - C 22 Alcohols, and esters of monocarboxylic acids, dicarboxylic acids or tricarboxylic acids with non-sugar C4 - C 26 Esters with dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols can also be used.

[0043] Particularly, diethyl sebacate, isopropyl lauroyl sarcosinate, diisopropyl sebacate, bis(2-ethylhexyl) sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, bis(2-ethylhexyl) adipate, diisostearyl adipate, bis(2-ethylhexyl) maleate, triisopropyl citrate, triisocetyl citrate, triisostearyl citrate, glyceryl trilactate, glyceryl trioctanoate, trioctyldodecyl citrate, trioleyl citrate, neopentyl glycol diheptanoate, and diethylene glycol diisononanoate can be mentioned.

[0044] As the ester oil, C6 - C 30 Of, preferably C12 ~C 22 Fatty acid sugar esters and diesters can be used. It is recalled that the term "sugar" means a hydrocarbon compound containing several alcohol functional groups, regardless of the presence or absence of aldehyde or ketone functional groups, retaining oxygen and containing at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0045] Examples of suitable sugars that can be mentioned include sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and their derivatives, especially alkyl derivatives, such as methyl derivatives, for example methyl glucose.

[0046] The sugar esters of fatty acids can be particularly selected from the group consisting of esters or ester mixtures of the aforementioned sugars with linear or branched, saturated or unsaturated C6 - C 30 , preferably C 12 ~C 22 fatty acids. When they are unsaturated, these compounds can have 1 - 3 conjugated or non - conjugated carbon - carbon double bonds.

[0047] The esters according to this variant can also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0048] These esters can be, for example, oleic acid esters, lauric acid esters, palmitic acid esters, myristic acid esters, behenic acid esters, coconut fatty acid esters, stearic acid esters, linoleic acid esters, linolenic acid esters, capric acid esters and arachidonic acid esters, or mixtures thereof, for example, especially mixed esters of oleopalmitic acid, oleostearic acid and palmitostearic acid, and pentaerythrityl tetraethylhexanoate.

[0049] More specifically, the mono-esters and di-esters used are, inter alia, the mono-oleic acid esters or di-oleic acid esters, stearic acid esters, behenic acid esters, oleopalmitic acid esters, linoleic acid esters, linolenic acid esters and oleostearic acid esters of sucrose, glucose or methylglucose.

[0050] An example that can be cited is the product sold by Amerchol under the name Glucate® DO, which is methylglucose dioleate.

[0051] Examples of preferred ester oils that can be cited are, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl (caprylic acid / capric acid), methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), 2-ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0052] The ester oil may be derived from an aromatic carboxylic acid such as benzoic acid and a monoalcohol such as C 12 ~C 15 alkanols. An example of such an ester oil that can be cited is alkyl (C12-15) benzoate.

[0053] Examples of artificial triglycerides include, for example, caprylocaprilin, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, tri(capric acid / caprylic acid) glyceryl, and tri(capric acid / caprylic acid / linolenic acid) glyceryl.

[0054] Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, etc.; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.; and mixtures thereof.

[0055] Preferably, the silicone oil is selected from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxane (PDMS), and liquid polyorganosiloxanes containing at least one aryl group.

[0056] These silicone oils may also be organically modified. The organically modified silicones that can be used according to the present invention are the silicone oils defined above and contain one or more organic functional groups bonded via hydrocarbon-based groups in their structures.

[0057] Organopolysiloxanes are more specifically defined in Walter Noll's "Chemistry and Technology of Silicones" (1968), Academic Press. They may be volatile or non-volatile.

[0058] When they are volatile, the silicones are more specifically selected from those having a boiling point between 60°C and 260°C, and even more specifically from the following: (i) Cyclic polydialkylsiloxanes containing from 3 to 7, preferably from 4 to 5 silicon atoms. These include, for example, octamethylcyclotetrasiloxane sold under the name Volatile Silicone® 7207 by Union Carbide, or under the name Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, under the name Silbione® 70045 V5 by Rhodia, and dodecamethylcyclopentasiloxane sold under the name Silsoft 1217 by Momentive Performance Materials, and mixtures thereof. Also mentionable are cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type of the formula:

[0059] [Chemical formula]

[0060] such as Silicone Volatile® FZ 3109 sold by Union Carbide. Also mentionable are mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, for example, a mixture (50 / 50) of octamethylcyclotetrasiloxane and tetratrimethylsilylpentaerythritol, and a mixture of octamethylcyclotetrasiloxane and oxy-1,1'-bis(2,2,2',2',3,3'-hexatrimethylsilyloxy)neopentane. (ii) Containing from 2 to 9 silicon atoms and having a viscosity of 5×10 -6 m 2Linear volatile polydialkylsiloxanes having viscosities below / s. An example is decamethyltetrasiloxane, sold in particular by Toray Silicone under the name SH 200. Silicones belonging to this class are also described in an article published in Cosmetics and Toiletries, Volume 91, January 76, pages 27 - 32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of the silicone is measured at 25 °C according to ASTM standard 445 Appendix C.

[0061] Non - volatile polydialkylsiloxanes may also be used. These non - volatile silicones are more particularly selected from polydialkylsiloxanes, among which may be mainly mentioned polydimethylsiloxanes having trimethylsilyl end - groups.

[0062] Among these polydialkylsiloxanes, non - limiting examples include the following commercially available products: - The 47 and 70 047 series of Silbione® oil or Mirasil® oil sold by Rhodia, for example 70 047 V 500 000 oil, - The oils of the Mirasil® series sold by Rhodia, - The 200 series of oils manufactured by Dow Corning, for example DC200 having a viscosity of 60,000 mm 2 / s, - Viscasil® oil manufactured by General Electric, and certain oils of the SF series manufactured by General Electric (SF 96, SF 18).

[0063] Also mentionable is polydimethylsiloxane containing dimethylsilanol end - groups, known by the name dimethiconol (CTFA), for example the 48 series of oils manufactured by Rhodia.

[0064] Among the silicones containing an aryl group, there are polydiarylsiloxanes, especially polydiphenylsiloxane and polyalkylarylsiloxane. Examples that can be cited include products sold under the following names: - The 70 641 series of Silbione® oil manufactured by Rhodia, - The oils of the 70 633 and 763 series of Rhodorsil® manufactured by Rhodia, - Dow Corning 556 Cosmetic Grade Fluid oil manufactured by Dow Corning, - The silicone of the PK series manufactured by Bayer, for example, product PK20, - Specific oils of the SF series manufactured by General Electric, such as SF 1023, SF 1154, SF 1250 and SF 1265.

[0065] The organically modified liquid silicone may contain, among other things, a polyethyleneoxy group and / or a polypropyleneoxy group. Therefore, examples that can be cited are silicone KF-6017 proposed by Shin-Etsu Chemical Co., Ltd., and Silwet® L722 oil and L77 oil manufactured by Union Carbide.

[0066] The hydrocarbon oil can be selected from the following: - Linear or branched, optionally cyclic, C6 - C 16 lower alkanes. Examples that can be cited include hexane, undecane, dodecane, tridecane, and isoparaffin, such as isohexadecane, isododecane and isodecane; and - Linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffin, liquid petrolatum, polydecene and hydrogenated polyisobutene, such as Parleam®, and squalane.

[0067] Preferred examples of hydrocarbon oils that can be mentioned include, for example, linear or branched hydrocarbons such as isocetadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, petrolatum or petroleum jelly, naphthalene, etc.; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymer; and mixtures thereof.

[0068] When present, the amount of hydrocarbon oil in the composition according to the present invention may be more than 0.1% by mass, preferably more than 0.5% by mass, more preferably more than 1% by mass, based on the total mass of the composition.

[0069] When present, the amount of hydrocarbon oil in the composition according to the present invention may be less than 30% by mass, preferably less than 20% by mass, more preferably less than 10% by mass, based on the total mass of the composition.

[0070] When present, the amount of hydrocarbon oil in the composition according to the present invention may be more than 0.1% by mass and less than 30% by mass, preferably more than 0.5% by mass and less than 20% by mass, more preferably more than 1% by mass and less than 10% by mass, based on the total mass of the composition.

[0071] In one embodiment, (a) the oil can be selected from ester oils and liquid lipophilic UV filters.

[0072] As the ester oil, those described above can be used.

[0073] Preferably, the ester oil is selected from the group consisting of isopropyl myristate, diisopropyl sebacate, isopropyl lauroyl sarcosinate, dicaprylyl carbonate, alkyl benzoate (C12 - 15), and mixtures thereof.

[0074] When present, the amount of ester oil in the composition according to the present invention may be 10% by mass or more, preferably 15% by mass or more, more preferably 20% by mass or more, based on the total mass of the composition.

[0075] The amount of the ester oil in the composition according to the present invention, if present, may be 45% by mass or less, preferably 40% by mass or less, more preferably 35% by mass or less based on the total mass of the composition.

[0076] The amount of the ester oil in the composition according to the present invention, if present, may be 10% by mass to 45% by mass, preferably 15% by mass to 40% by mass, more preferably 20% by mass to 35% by mass based on the total mass of the composition.

[0077] The term "liquid" means, in this specification, being liquid at 25 °C under 1 atm.

[0078] The term "UV" means, in this specification, ultraviolet rays and includes the UV-B region (wavelength 260 to 320 nm) and the UV-A region (wavelength 320 to 400 nm).

[0079] The term "lipophilic" means, in this specification, that a substance is soluble in oil at a concentration of at least 1% by mass based on the total mass of the oil at room temperature (25 °C) and atmospheric pressure (10 5 Pa).

[0080] Examples of the liquid lipophilic UV filter include salicylic acid compounds, cinnamic acid compounds, β,β-diphenylacrylate compounds, phenylbenzimidazole compounds, and benzalmalonate compounds.

[0081] Examples of the salicylic acid compounds include homosalate commercially available under the name "Eusolex HMS" by Rona / EM industries, and ethylhexyl salicylate commercially available under the name "NEO HELIOPAN OS" by Symrise.

[0082] Examples of cinnamic acid compounds include ethylhexyl methoxycinnamate, isopropyl ethoxycinnamate, which are commercially available under the name "PARSOL CX" by DSM NUTRITIONAL PRODUCTS, isoamyl methoxycinnamate, diisopropyl methylcinnamate, cinoxate and glyceryl ethylhexanoate dimethoxycinnamate and DEA methoxycinnamate, which are commercially available under the name "NEO HELIOPAN E 1000" by Symrise, and salts thereof.

[0083] Examples of β,β-diphenylacrylate compounds include octocrylene, which is commercially available under the name "UVINUL N539" by BASF, and etocrylene, which is commercially available under the name "UVINUL N35" by BASF.

[0084] Examples of benzalmalonate compounds include polyorganosiloxanes containing a benzalmalonate moiety, such as polysilicone-15, which is commercially available under the name "Parsol SLX" by DSM NUTRITIONAL PRODUCTS, and di-neopentyl 4'-methoxybenzalmalonate.

[0085] The liquid lipophilic UV filter is preferably selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

[0086] When present, the amount of the liquid lipophilic UV filter in the composition according to the present invention may be 10% by mass or more, preferably 15% by mass or more, more preferably 20% by mass or more based on the total mass of the composition.

[0087] When present, the amount of the liquid lipophilic UV filter in the composition according to the present invention may be 35% by mass or less, preferably 30% by mass or less, more preferably 25% by mass or less based on the total mass of the composition.

[0088] The amount of the liquid lipophilic UV filter in the composition according to the present invention, when present, may be in the range of 10% to 35% by mass, preferably 15% to 30% by mass, more preferably 20% to 25% by mass, based on the total mass of the composition.

[0089] The amount of the (a) oil in the composition according to the present invention may be 10% by mass or more, preferably 20% by mass or more, more preferably 30% by mass or more, based on the total mass of the composition.

[0090] On the other hand, the amount of the (a) oil in the composition according to the present invention may be 60% by mass or less, preferably 55% by mass or less, more preferably 50% by mass or less, based on the total mass of the composition.

[0091] The amount of the (a) oil in the composition according to the present invention may be in the range of 10% to 60% by mass, preferably 20% to 55% by mass, more preferably 30% to 50% by mass, based on the total mass of the composition.

[0092] (Solid lipophilic UV filter) The composition according to the present invention contains (b) at least one solid lipophilic UV filter. A single type of solid lipophilic UV filter may be used, or two or more different types of solid lipophilic UV filters may be used in combination.

[0093] The term "UV" as used herein means ultraviolet rays and includes the UV-B region (wavelength 260 to 320 nm) and the UV-A region (wavelength 320 to 400 nm).

[0094] The term "lipophilic" as used herein means that a substance is soluble in oil at a concentration of at least 1% by mass based on the total mass of the oil at room temperature (25 °C) and atmospheric pressure (10 5 Pa).

[0095] The term "solid" as used herein means solid at 25 °C under 1 atm.

[0096] The (b) solid organic UV filters used in the present invention may include, but are not limited to, triazine compounds, dibenzoylmethane compounds, phenylbenzotriazole compounds, triazine compounds, para - aminobenzoic acid compounds, benzylidene camphor compounds, phenylbenzimidazole compounds, imidazoline compounds, dibenzoylmethane compounds, and merocyanine compounds.

[0097] Examples of triazine compounds include ethylhexyl triazone commercially available under the name "UVINUL T - 150" by BASF, diethylhexyl butamidotriazone commercially available under the name "UVASORB HEB" by SIGMA 2V, 2,4,6 - tris(dineopentyl 4'-aminobenzalmalonate)-s - triazine, 2,4,6 - tris(diisobutyl 4'-aminobenzalmalonate)-s - triazine, 2,4 - bis(dineopentyl 4'-aminobenzalmalonate)-6-(n - butyl 4'-aminobenzoate)-s - triazine, 2,4 - bis(n - butyl 4'-aminobenzoate)-6-(aminopropyltrisiloxane)-s - triazine, and bis - ethylhexyloxyphenol methoxyphenyltriazine commercially available under the trademark "TINOSORB S" by Ciba Geigy.

[0098] Examples of dibenzoylmethane compounds include butyl methoxydibenzoylmethane or avobenzone sold under the trademark Parsol 1789 by DSM Nutritional Products.

[0099] Examples of phenylbenzotriazole compounds include drometrizole trisiloxane sold under the name Silatrizole by Rhodia Chimie.

[0100] Triazine compounds that can be mentioned include bis-(ethylhexyl oxy-phenol) methoxyphenyltriazine sold under the trade name Tinosorb S by BASF, in particular ethylhexyltriazone sold under the trade name Uvinul T150 by BASF, diethylhexylbutamidotriazine sold under the trade name Uvasorb HEB by Sigma 3V, 2,4,6-tris(dineopentyl 4'-aminobenzalmalonate)-s-triazine, 2,4,6-tris(diisobutyl 4'-aminobenzalmalonate)-s-triazine, 2,4-bis(dineopentyl 4'-aminobenzalmalonate)-6-(n-butyl 4'-aminobenzoate)-s-triazine, triazine silicones substituted with two aminobenzoate groups such as those described in EP0841341, specifically 2,4-bis-(n-butyl 4'-aminobenzalmalonate)-6-[(3-{1,3,3,3-tetramethyl-1-[(trimethylsilyloxy]disiloxanyl}propyl)amino]-s-triazine.

[0101] Para-aminobenzoic acid compounds that can be mentioned include para-aminobenzoate (PABA), for example ethyl PABA (para-aminobenzoate), ethyldihydroxypropyl PABA, and ethylhexyl dimethyl PABA sold under the name "ESCALOL 5972" by ISP, glyceryl PABA and PEG-25 PABA such as those sold under the name "Uvinul P25" by BASF, and their salts.

[0102] Examples of benzylidene camphor compounds include 3-benzylidene camphor commercially available from CHIMEX under the name "MEXORYL SD", methylbenzylidene camphor commercially available from MERCK under the name "EUSOLEX 6300", polyacrylamide methylbenzylidene camphor commercially available from CHIMEX under the name "MEXORYL SW", and terephthalylidene dicamphor sulfonic acid commercially available from Chimex under the name "Mexoryl SX".

[0103] Examples of phenylbenzimidazole compounds include phenylbenzimidazole sulfonic acid commercially available from Merck under the name "Eusolex 232", and disodium phenyl dibenzimidazole tetrasulfonate commercially available from Haarmann and Reimer under the name "Neo Heliopan AP".

[0104] Examples of imidazoline compounds include ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.

[0105] Examples of dibenzoylmethane compounds include butyl methoxydibenzoylmethane and isopropyldibenzoylmethane, particularly commercially available from Hoffmann-La Roche under the trade name "Parsol 1789".

[0106] Examples of merocyanine compounds include octyl 5-N,N-diethylamino-2-phenylsulfonyl-2,4-pentadienoate.

[0107] (b) Preferably, the solid lipophilic UV filter is selected from the group consisting of ethylhexyl triazone, butyl methoxydibenzoylmethane, droxmetrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

[0108] The amount of the (b) solid lipophilic UV filter in the composition according to the present invention may be 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass or more, based on the total mass of the composition.

[0109] On the other hand, the amount of the (b) solid lipophilic UV filter in the composition according to the present invention may be 30% by mass or less, preferably 25% by mass or less, more preferably 20% by mass or less, based on the total mass of the composition.

[0110] The amount of the (b) solid lipophilic UV filter in the composition according to the present invention may be in the range of 1% by mass to 30% by mass, preferably 2% by mass to 25% by mass, more preferably 3% by mass to 20% by mass, based on the total mass of the composition.

[0111] (C 1~3 monoalcohol) The composition according to the present invention contains (c) at least one C 1~3 monoalcohol. A single type of C 1~3 monoalcohol may be used, or two or more different types of C 1~3 monoalcohols can also be used in combination.

[0112] (c) C 1~3 monoalcohol contains 1 to 3 carbon atoms. (c) C 1~3 monoalcohol can be selected from monohydric aliphatic alcohols such as ethanol, propanol, and isopropanol. (c) C 1~3 It is preferable that the monoalcohol is ethanol.

[0113] The amount of the (c) C 1~3 monoalcohol in the composition according to the present invention is 10% by mass or more, preferably 15% by mass or more, more preferably 20% by mass or more, based on the total mass of the composition.

[0114] The composition according to the present invention also has (c) C in an amount of 10% by mass or more based on the total mass of the composition 1~3Due to the presence of the monoalcohol, it can also have good fluidity such as low viscosity and good texture such as freshness.

[0115] (c)C in the composition according to the present invention 1~3 The amount of the monoalcohol may be 20% by mass or more, preferably 30% by mass or more, more preferably 40% by mass or more based on the total mass of the composition.

[0116] On the other hand, (c)C in the composition according to the present invention 1~3 The amount of the monoalcohol may be 60% by mass or less, preferably 55% by mass or less, more preferably 50% by mass or less based on the total mass of the composition.

[0117] The composition according to the present invention also particularly has (c)C 1~3 When the amount of the monoalcohol is 60% or less based on the total mass of the composition, it can be stable so that the crystals of the (b) solid lipophilic UV filter are not observed over time.

[0118] (c)C in the composition according to the present invention 1~3 The amount of the monoalcohol may be in the range of 20% by mass to 60% by mass, preferably 30% by mass to 55% by mass, more preferably 40% by mass to 50% by mass based on the total mass of the composition.

[0119] (Polyamide polycondensate) The composition according to the present invention contains (d) at least one polyamide polycondensate. A single type of polyamide polycondensate may be used, or two or more different types of polyamide polycondensates may be used in combination.

[0120] The term "polycondensate" is understood to mean, within the meaning of the present invention, a polymer obtained by polycondensation, that is, by a chemical reaction between monomers having different functional groups selected particularly from each functional group of an acid, an alcohol and an amine.

[0121] The term "polymer" is understood to mean, within the meaning of the present invention, a compound having at least two repeating units, preferably three repeating units, and even better still ten or more repeating units.

[0122] (d) The lipophilic polyamide polycondensate can specifically be selected from polyamide polymers comprising a polymer backbone having hydrocarbon repeating units with at least one non-pendant amide unit and, optionally, b) at least one optionally functionalized pendant aliphatic chain containing at least four carbon atoms and bonded to these hydrocarbon units and / or at least one optionally functionalized terminal aliphatic chain.

[0123] The term "functionalized chain" is understood to mean, within the meaning of the present invention, an alkyl chain containing one or more functional or reactive groups specifically selected from amide, hydroxyl, ether, oxyalkylene or polyoxyalkylene, halogen, including groups of fluorinated or perfluorinated groups, esters, siloxanes and polysiloxanes. In addition, the hydrogen atoms of one or several aliphatic chains can be at least partially replaced by fluorine atoms.

[0124] The term "hydrocarbon repeating unit" is understood to mean, within the meaning of the present invention, a unit containing from 2 to 80 carbon atoms, preferably from 2 to 60 carbon atoms, which can be saturated or unsaturated and can be linear, branched or cyclic, retaining hydrogen atoms and optionally oxygen atoms. Each of these units is advantageously non-pendant and additionally contains at least one amide group occurring in the polymer backbone.

[0125] Advantageously, the pendant chain is directly bonded to at least one of the nitrogen atoms of the polymer backbone.

[0126] (d) The lipophilic polyamide polycondensate can contain silicone units or oxyalkylene units between the hydrocarbon units.

[0127] In addition, (d) the lipophilic polyamide polycondensate advantageously contains from 40% to 98%, still more preferably from 50% to 95% of aliphatic chains relative to the total number of amide units and aliphatic chains.

[0128] Preferably, the pendant aliphatic chains are attached to at least one of the nitrogen atoms of the amide units of the polymer. In particular, the aliphatic chains of this polyamide account for 40 to 98%, still more preferably 50 to 95% of the total number of amide units and aliphatic chains.

[0129] Advantageously, (d) the lipophilic polyamide polycondensate may exhibit a mass average molecular weight of less than 100,000 (specified as in the range of 1000 to 100,000), in particular less than 50,000 (specified as in the range of 1000 to 50,000), more particularly from 1000 to 30,000, preferably from 2000 to 20,000, still more preferably from 2000 to 10,000.

[0130] (d) The lipophilic polyamide polycondensate is insoluble in water, particularly at 25°C. It contains no ionic groups, inter alia.

[0131] Preferred lipophilic polyamide polycondensates that can be used in the present invention include polyamides branched by pendant aliphatic chains and / or terminal aliphatic chains having from 6 to 120 carbon atoms, still more preferably from 8 to 120 carbon atoms, specified as from 12 to 68 carbon atoms, and each terminal aliphatic chain is attached to the polyamide main chain via at least one linking group L. The linking group L can be selected from the groups of ester, ether, amine, urea, urethane, thioester, thioether, thiourea, and thiourethane. Preferably, these polymers contain aliphatic chains at each end of the polyamide main chain.

[0132] These polymers are preferably polymers obtained from polycondensation between a dicarboxylic acid having at least 32 carbon atoms (especially having 32 to 44 carbon atoms), a diamine having at least 2 carbon atoms (especially 2 to 36 carbon atoms), and an amine selected from triamines having at least 2 carbon atoms (especially 2 to 36 carbon atoms). This diacid is preferably a dimer obtained from a fatty acid containing ethylenic unsaturation such as oleic acid, linoleic acid or linolenic acid, having at least 16 carbon atoms, preferably 16 to 24 carbon atoms. The diamine is preferably ethylenediamine, hexylenediamine or hexamethylenediamine. The triamine is, for example, ethylenetriamine. In the case of polymers containing one or two terminal carboxylic acid groups, it is advantageous to esterify these polymers with a monohydric alcohol having at least 4 carbon atoms, preferably 10 to 36 carbon atoms, still better 12 to 24 carbon atoms, still even better 16 to 24 carbon atoms, for example 18 carbon atoms.

[0133] (d) The lipophilic polyamide polycondensate is especially of the formula (A):

[0134] [Chemical formula]

[0135] [wherein, n is an integer in the range of 1 to 30, R'1 independently represents, in each case, a fatty chain and is selected from an alkyl group or an alkenyl group having at least 1 carbon atom, especially 4 to 24 carbon atoms, R'2 independently represents, in each case, a hydrocarbon group containing 1 to 52 carbon atoms, R'3 independently represents, in each case, an organic group containing at least 1 atom selected from each atom of carbon, hydrogen or nitrogen, provided that R'3 contains at least 3 carbon atoms, R'4 is independently in each case a direct bond to a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, or at least one group selected from R'3 and another R'4 (when the group is another R'4, the nitrogen atom to which both R'3 and R'4 are attached forms a heterocyclic structure moiety defined by R'4-N-R'3), provided that at least 50% of the R'4 groups represent hydrogen atoms, L represents a linking group preferably selected from esters, ethers, amines, ureas, urethanes, thioesters, thioethers, thioureas or thiourethanes, optionally substituted by at least one R'1 group as defined above. can be selected from polymers of.

[0136] According to one embodiment, these polymers are selected from polymers of formula (A) (wherein the linking group L represents an ester group -C(=O)-O-).

[0137] These polymers are more specifically those described in US Patent No. 5,783,657 of Union Camp.

[0138] Each of these polymers is in particular of the following formula (B):

[0139]

Chemical formula

[0140] (wherein m represents an integer of amide units such that the number of ester groups accounts for 10% to 50% of the total number of ester groups and amide groups, R1 is independently in each case an alkyl or alkenyl group having at least 4 carbon atoms, specifically 4 to 24 carbon atoms, R2 is independently in each case a C4 - C 42 hydrocarbon group, provided that 50% of the R2 groups are C 30 ~C 42 hydrocarbon group, R3 independently represents, in each case, an organic group having at least 2 carbon atoms, hydrogen atoms and optionally one or more oxygen atoms or nitrogen atoms, R4 independently represents, in each case, a hydrogen atom, a C1-C 10 alkyl group, or a direct bond to R3 or another R4 such that the nitrogen atom to which both R3 and R4 are attached forms a moiety of a heterocyclic structure defined by R4-N-R3, with at least 50% of the R4 groups representing hydrogen atoms) can satisfy.

[0141] In a particular case of formula (B), within the meaning of the present invention, the optionally functionalized terminal fatty chain is the terminal chain attached to the last nitrogen atom of the polyamide backbone.

[0142] In particular, the ester groups of formula (B) forming part of the terminal fatty chain and / or pendant fatty chain within the meaning of the present invention account for 15-40%, still more preferably 20-35% of the total number of ester groups and amide groups.

[0143] Furthermore, it is advantageous if m represents an integer in the range of 1-5, still more preferably an integer greater than 2.

[0144] Preferably, R1 is a C 12 -C 22 , preferably a C 16 -C 22 alkyl group. Advantageously, R2 can be a C 10 -C 42 hydrocarbon (alkylene) group. Preferably, at least 50%, still more preferably at least 75% of the R2 groups are groups having 30-42 carbon atoms. The other R2 groups are hydrogenated C4-C 19 groups, further C4-C 12 groups.

[0145] Preferably, R3 represents a C2-C 36 hydrocarbon group or a polyoxyalkylene group, and R4 represents a hydrogen atom. Preferably, R3 is a C2-C 12Represents a hydrocarbon group.

[0146] The hydrocarbon group may be saturated or unsaturated, and may be a linear, cyclic or branched group. Moreover, the alkyl group and the alkylene group may be saturated or unsaturated, and may be a linear or branched group.

[0147] Generally, the polymer of formula (B) is provided in the form of a blend of polymers, and these blends can additionally contain a synthetic product corresponding to a compound of formula (B) (wherein n has a value of 0), i.e., a diester.

[0148] According to a particularly preferred form of the present invention, what will be used is a blend of copolymers of dicarboxylic acids condensed with ethylenediamine; the terminal ester groups are obtained from the esterification of the remaining acids terminated with cetyl alcohol, stearyl alcohol, or a mixture thereof (also known as cetearyl alcohol) (INCI name: ethylenediamine / dimer dilinoleic acid stearyl copolymer). Its weight average molecular weight is preferably 6000. These blends are sold in particular by Arizona Chemical under the trade names UNICLEAR 80 and UNICLEAR 100 VG, in the form of 80% (active material) gel and 100% (active material) gel in mineral oil, respectively. They have a softening point of 88 °C to 94 °C. 36 Also mentionable as a polyamide polycondensate corresponding to general formula (A) is a polymer containing at least one terminal fatty chain bonded to the polymer backbone via at least one tertiary amide bond group (also known as amide-terminated polyamide or ATPA). For further information on these polymers, reference can be made to US Patent No. 6503522.

[0149] According to a particularly preferred form of the present invention, what will be used more particularly is hydrogenated dilinoleic acid, ethylenediamine and di(C

[0150] ~C 14 ~C18 ) A copolymer of alkylamine (INCI name: Ethylenediamine / Hydrogenated Dimer Dilinoleic Acid Copolymer Bis-Di-C 14 ~C 18 alkylamide). This copolymer is sold, in particular, by Arizona Chemical under the trade name SYLVACLEAR A200V.

[0151] According to another embodiment, the polyamide of formula (A) may be a poly(ester - amide) having ester terminals [ester - terminated poly(ester - amide) or ETPEA], for example, the preparation of which may be as described in U.S. Patent No. 6552160.

[0152] According to a particularly preferred form of the present invention, more particularly used will be a copolymer of hydrogenated dilinoleic acid, ethylenediamine, neopentyl glycol and stearyl alcohol (INCI name: Bis - stearylethylenediamine / Neopentyl glycol / Hydrogenated dimer dilinoleic acid stearyl copolymer). This copolymer is sold, in particular, by Arizona Chemical under the trade name SYLVACLEAR C75 V.

[0153] Also mentionable as polyamide polycondensates that can be used in the present invention are those containing at least one terminal fatty chain bonded to the polymer main chain via at least one ether or polyether bond group [so it is said to be an ether - terminated poly(ether)amide]. Such polymers are described, for example, in U.S. Patent No. 6399713.

[0154] The polyamide polycondensate (d) according to the present invention may advantageously have a softening point above 65°C, which can range up to 190°C. Preferably, it exhibits a softening point in the range of 70 - 130°C, even more preferably 80 - 105°C. The polyamide is, in particular, a non - wax - like polymer.

[0155] Also mentionable as (d) polyamide polycondensates that can be used in the present invention are polyamide resins obtained from the condensation of aliphatic dicarboxylic acids and diamines (including compounds having more than two carbonyl groups and more than two amine groups), wherein the carbonyl groups and amine groups of all adjacent units are condensed via amide bonds. These polyamide resins are specifically those sold under the trademark Versamid® (Versamid 930, 744 or 1655) by General Mills, Inc. and Henkel Corp., or under the trademark Onamid® by Olin Mathieson Chemical Corp., specifically Onamid S or C. These resins have a mass average molecular weight in the range of 6000 to 9000. For further information on these polyamides, reference can be made to U.S. Patent No. 3645705 and U.S. Patent No. 3148125. More specifically, Versamid® 930 or 744 is used.

[0156] Also usable are polyamides sold under the reference name Uni-Rez (2658, 2931, 2970, 2621, 2613, 2624, 2665, 1554, 2623, 2662) by Arizona Chemical, and products sold under the reference name Macromelt 6212 by Henkel. For further information on these polyamides, reference can be made to U.S. Patent No. 5500209.

[0157] It is also possible to use polyamide resins derived from plants, such as those described in U.S. Patent No. 5783657 and U.S. Patent No. 5998570.

[0158] It is particularly preferred that the (d) polyamide polycondensate is an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

[0159] The amount of the (d) polyamide polycondensate in the composition according to the present invention may be 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1.0% by mass or more, based on the total mass of the composition.

[0160] On the other hand, the amount of the (d) polyamide polycondensate in the composition according to the present invention may be 7.0% by mass or less, preferably 6.5% by mass or less, more preferably 6.0% by mass or less, based on the total mass of the composition.

[0161] The amount of the (d) polyamide polycondensate in the composition according to the present invention may be in the range of 0.1% by mass to 7.0% by mass, preferably 0.5% by mass to 6.5% by mass, more preferably 1.0% by mass to 6.0% by mass, based on the total mass of the composition.

[0162] (Water) The composition according to the present invention is preferably anhydrous.

[0163] The term "anhydrous" means in this specification that the composition according to the present invention may contain a very small amount of water, preferably does not contain water. Therefore, the amount of water may be 2% by mass or less, preferably 1.5% by mass or less, more preferably 1% by mass or less, based on the total mass of the composition. It is particularly preferred that the cosmetic composition of the present invention does not contain water.

[0164] (Other aspects) According to the present invention, the mass ratio of the amount of the (d) polyamide polycondensate / the amount of the (a) oil in the composition according to the present invention is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0165] It has been discovered that an excessive amount of (d) polyamide polycondensate may act disadvantageously in boosting the SPF value of the composition according to the present invention. Therefore, in the composition according to the present invention, the amount of (d) polyamide polycondensate is limited such that the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less. By limiting the amount of (d) polyamide polycondensate, the composition according to the present invention can have a sufficiently increased SPF value.

[0166] On the other hand, the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil in the composition according to the present invention may be 0.01 or more, preferably 0.02 or more, more preferably 0.03 or more.

[0167] Therefore, the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil in the composition according to the present invention may be 0.01 - 0.15, preferably 0.02 - 0.14, more preferably 0.03 - 0.13.

[0168] (Other components) In addition to the aforementioned components, the composition according to the present invention may contain components typically used in cosmetics, specifically, surfactants or emulsifiers, hydrophilic or lipophilic thickeners other than component (d), organic volatile or non - volatile solvents, silicones and silicone derivatives other than component (a), natural extracts derived from animals or plants, waxes, etc., within a range that does not impair the effects of the present invention.

[0169] The composition according to the present invention may contain the above - mentioned optional additives in an amount of 0.001 mass% - 30 mass%, preferably 0.01 mass% - 20 mass%, more preferably 0.1 mass% - 10 mass% based on the total mass of the composition.

[0170] [Preparation] The composition according to the present invention can be prepared by mixing components (a) - (d) as essential components, as well as the optional components described above.

[0171] The methods and means for mixing the above essential components and optional components are not limited. Any conventional methods and means can be used to mix the above essential components and optional components to prepare the composition according to the present invention.

[0172] The composition according to the present invention can be homogeneous.

[0173] The composition according to the present invention can be in the form of a transparent or translucent liquid, gel or solid. Specifically, the composition according to the present invention can be in the form of a transparent liquid, gel or solid, because the crystallization of the (b) solid lipophilic UV filter can be reduced or avoided.

[0174] Transparency can be measured by measuring the transmittance using an absorptiometer in the visible region [for example, transparency was measured as the average of the visible light transmittance (between 400 nm and 800 nm) with a V-550 (JASCO) in a 2 mm wide cell]. The measurement is performed on the undiluted composition. The blank is determined using distilled water.

[0175] The composition of the present invention may preferably have a transparency of more than 50%, preferably more than 60%, more preferably more than 70%, even more preferably more than 80%, and most preferably more than 90%.

[0176] [Method] The composition according to the present invention can be used in a beauty method for keratinous substances, including the step of applying the composition according to the present invention to keratinous substances. Keratinous substances herein mean materials containing keratin as a main component, examples of which include skin, mucous membranes, lips, nails, etc.

[0177] Since the composition according to the present invention contains (b) a solid lipophilic UV filter, the composition according to the present invention is preferably used to protect keratinous substances from UV rays. For example, the composition according to the present invention can be used as a sunscreen product such as a sunblock.

[0178] Thus, the composition according to the present invention can be a cosmetic composition, preferably a UV-shielding cosmetic composition, more preferably a UV-shielding skin cosmetic composition.

[0179] [Use] According to the present invention, the (d) polyamide polycondensate can function as an SPF booster, i.e., an agent, to enhance the ability to shield UV rays.

[0180] Another aspect of the present invention is (a) at least one oil, and (b) at least one solid lipophilic UV filter, and (c) at least one C 1~3 monoalcohol and the use of (d) at least one polyamide polycondensate to improve the UV shielding ability of the composition in a composition containing wherein the amount of (c) C 1~3 monoalcohol in the composition is 10% by mass or more based on the total mass of the composition, and the mass ratio of the amount of (d) polyamide polycondensate / (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0181] The improvement of the UV shielding ability of the above composition can be determined by an increase in the SPF value of the composition.

[0182] The above composition can exhibit good fluidity and good texture.

[0183] Good fluidity means herein that the viscosity of the composition is sufficiently low, such as less than 10 mPa·s at 25°C under atmospheric pressure.

[0184] Good texture includes herein a comfortable touch, for example, freshness.

[0185] The above composition can also exhibit good stability.

[0186] Good stability means, in the context of this specification, that the crystals of the solid lipophilic UV filter are not observed, for example, over a period of at least one week.

[0187] It is preferred that the above composition can exhibit at least one of good fluidity, good stability, and good texture, more preferably all of good fluidity, good stability, and good texture.

[0188] The above description regarding components (a) to (d) and optional components for the composition according to the present invention can be applied to the description regarding the above use according to the present invention.

Examples

[0189] The present invention will be described in more detail by way of examples, but should not be construed as limiting the scope of the present invention.

[0190] (Examples 1 to 3 and Comparative Example 1) The following compositions according to Examples 1 to 3 and Comparative Example 1 shown in Table 1 were prepared by mixing the components shown in Table 1. The numerical values for the amounts of the components shown in Table 1 are all based on "mass%" as the active ingredient. The symbols (a) to (d) in Table 1 correspond to those in the "claims".

[0191]

Table 1

[0192] [Evaluation] (SPF) Each of the compositions according to Examples 1 to 3 and Comparative Example 1 was shaken 10 times in a container with a lid to make it homogeneous. Each of the homogeneous compositions was placed on a plate (Helio plate HD 6, PMMA, roughness: 6 μm) using a variable pipette, 1 cm on the plate 2Transferred in an amount of 0.8 mg per hit, and then evenly spread with a finger. The coated plate was air-dried at room temperature for 15 minutes. The obtained sample plate was placed in a Labsphere Ultraviolet Transmittance Analyzer (model UV-2000 manufactured by Solar Light Company, Philadelphia, Pennsylvania). Irradiation with UV rays was performed at 12 points on the sample plate. The in vitro SPF value was calculated from the observed absorption pattern.

[0193] The results are shown in the "SPF" row in Table 1.

[0194] (Fluidity) The viscosities of the compositions according to Examples 1 to 3 and Comparative Example 1 were measured at 25 °C ± 2 °C using a Viscometer CP10 (from Gilson.com). The results were categorized according to the following evaluation criteria: Good: Less than 10 mPa·s Poor: 10 mPa·s or more

[0195] The results are shown in the "Fluidity" row in Table 1.

[0196] (Texture) Each evaluator applied the compositions according to Examples 1 to 3 and Comparative Example 1 to the skin, evaluated the texture for each composition, and graded them according to the following evaluation criteria: Good: Crisp Normal: Somewhat crisp Poor: Not crisp

[0197] The results are shown in the "Texture" row in Table 1.

[0198] (Stability) Each of the compositions according to Examples 1 to 3 and Comparative Example 1 was filled in a glass bottle and kept at a temperature of 4 °C for 1 week. The optical microscope images of each composition under polarized filter conditions were observed and evaluated according to the following evaluation criteria: Good: No crystals were observed Poor: Crystals were observed

[0199] The results are shown in the "Stability" row in Table 1.

[0200] (Abstract) The compositions according to Examples 1 to 3 containing an ethylenediamine / dimer dilinoleic acid stearyl copolymer corresponding to component (d) in Claim 1 may have an increased SPF value. It is clear from Examples 1 to 3 that the higher the above mass ratio, the higher the SPF value.

[0201] On the other hand, the composition according to Comparative Example 1 that does not contain an ethylenediamine / dimer dilinoleic acid stearyl copolymer has a lower SPF value.

[0202] (Examples 4 to 5 and Comparative Examples 2 to 3) The following compositions according to Examples 4 to 5 and Comparative Examples 2 to 3 shown in Table 2 were prepared by mixing the components shown in Table 2. The numerical values for the amounts of the components shown in Table 2 are all based on "mass%" as the active ingredient. The symbols (a) to (d) in Table 2 correspond to those in the "Claims".

[0203]

Table 2

[0204] [Evaluation] (SPF) Each of the compositions according to Examples 4 to 5 and Comparative Examples 2 to 3 was shaken 10 times in a container with a lid to make it homogeneous. Each of the homogeneous compositions was placed on a plate (Helio plate HD 6, PMMA, roughness: 6 μm) using a variable pipette, 1 cm on the plate 2It was transferred in an amount of 0.8 mg per hit and then evenly spread with a finger. The coated plate was air-dried at room temperature for 15 minutes. The obtained sample plate was placed in a Labsphere Ultraviolet Transmittance Analyzer (model UV-2000 manufactured by Solar Light Company, Philadelphia, Pennsylvania). Irradiation with ultraviolet rays was performed at 12 points on the sample plate. The in vitro SPF value was calculated from the observed absorption pattern.

[0205] The results are shown in the "SPF" row in Table 2.

[0206] (Flowability) The viscosities of the compositions according to Examples 4 to 5 and Comparative Examples 2 to 3 were measured at 25 ± 2 °C using a Viscometer CP10 (Gilson.com). The results were categorized according to the following evaluation criteria: Good: Less than 10 mPa·s Poor: 10 mPa·s or more

[0207] The results are shown in the "Flowability" row in Table 2.

[0208] (Texture) Each evaluator applied the compositions according to Examples 4 to 5 and Comparative Examples 2 to 3 onto the skin, evaluated the texture for each composition, and graded them according to the following evaluation criteria: Good: Crisp Normal: Somewhat crisp Poor: Not crisp

[0209] The results are shown in the "Texture" row in Table 2.

[0210] (Stability) Each of the compositions according to Examples 4 to 5 and Comparative Examples 2 to 3 was filled in a glass bottle and kept at a temperature of 4 °C for 1 week. The optical microscope images of each composition under polarized filter conditions were observed and evaluated according to the following evaluation criteria: Good: No crystals were observed. Defect: Crystals were observed

[0211] The results are shown in the "Stability" row in Table 2

[0212] (Abstract) Compositions according to Examples 4 - 5 containing an ethylenediamine / dimer dilinoleic acid stearyl copolymer in an amount such that the mass ratio of the amount of ethylenediamine / dimer dilinoleic acid stearyl copolymer corresponding to component (d) in claim 1 to the amount of oil is 0.15 or less can have a sufficiently increased SPF value

[0213] On the other hand, compositions according to Comparative Examples 2 - 3 containing an ethylenediamine / dimer dilinoleic acid stearyl copolymer in an amount such that the mass ratio of the amount of ethylenediamine / dimer dilinoleic acid stearyl copolymer corresponding to component (d) in claim 1 to the amount of oil is more than 0.15 can have a reduced SPF value compared to those obtained by the composition according to Example 5

[0214] What the above results mean is that in order to obtain a sufficiently increased SPF value, the amount of component (d) in the composition according to the present invention should be limited

[0215] (Examples 6 - 9 and Comparative Examples 4 - 5) The following compositions according to Examples 6 - 9 and Comparative Examples 4 - 5 shown in Table 3 were prepared by mixing the components shown in Table 3. The numerical values for the amounts of the components shown in Table 3 are all based on "mass%" as active ingredients. The symbols (a) - (d) in Table 3 correspond to those in the "Claims"

[0216] [Table 3]

[0217] [Evaluation] (Fluidity) The viscosity of each of the compositions described in Examples 6 to 9 and Comparative Examples 4 to 5 was measured at 25 ± 2 °C using a Viscometer CP10 (Gilson.com). The results were categorized according to the following evaluation criteria: Good: less than 10 mPa·s Poor: 10 mPa·s or more

[0218] The results are shown in the "fluidity" row in Table 3.

[0219] (Stability) Each of the compositions according to Examples 6 to 9 and Comparative Examples 4 to 5 was filled in a glass bottle and kept at a temperature of 4 °C for 1 week. The optical microscope images of each composition under the conditions of a polarizing filter were observed and evaluated according to the following evaluation criteria: Good: No crystals were observed Poor: Crystals were observed

[0220] The results are shown in the "stability" row in Table 3.

[0221] (Summary) The compositions according to Examples 6 to 9, which contain ethanol in an amount of 10% by mass or more based on the total mass of the composition corresponding to component (c) in claim 1, can have good fluidity.

[0222] On the other hand, the compositions according to Examples 4 to 5, which contain ethanol in an amount of less than 10% by mass based on the total mass of the composition corresponding to component (c) in claim 1, could not have good fluidity.

[0223] What the above results mean is that, in order to obtain good fluidity, the amount of component (c) in the composition according to the present invention should be 10% by mass or more.

Claims

1. (a) At least one oil, (b) At least one solid lipophilic UV filter, (c) at least one C 1～3 monoalcohol, and (d) At least one polyamide polycondensate A composition comprising: (c)C in the composition 1～3 The amount of the monoalcohol is 10% by mass or more based on the total mass of the composition, The composition wherein the mass ratio of the amount of (d) polyamide polycondensate to the amount of (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

2. (a) The composition according to claim 1, wherein the oil is selected from ester oils and liquid lipophilic UV filters.

3. The composition according to claim 2, wherein the ester oil is selected from the group consisting of isopropyl myristate, diisopropyl sebacate, isopropyl lauroyl sarcosinate, dicaprylyl carbonate, alkyl benzoate (C12-15), and mixtures thereof.

4. The composition according to claim 2 or 3, wherein the liquid lipophilic UV filter is selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

5. The composition according to any one of claims 1 to 4, wherein the amount of (a) oil in the composition is in the range of 10% by mass to 60% by mass, preferably 20% by mass to 55% by mass, more preferably 30% by mass to 50% by mass, based on the total mass of the composition.

6. (b) The composition according to any one of claims 1 to 5, wherein the solid lipophilic UV filter is selected from the group consisting of ethylhexyl triazone, butyl methoxydibenzoylmethane, droxometholone trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

7. The composition according to any one of claims 1 to 6, wherein the amount of (b) solid lipophilic UV filter in the composition is in the range of 1% by mass to 30% by mass, preferably 2% by mass to 25% by mass, more preferably 3% by mass to 20% by mass, based on the total mass of the composition.

8. (c)C 1～3 The composition according to any one of claims 1 to 7, wherein the monoalcohol is ethanol.

9. (c)C in the composition 1～3 The composition according to any one of claims 1 to 8, wherein the amount of the monoalcohol is in the range of 20% by mass to 60% by mass, preferably 30% by mass to 55% by mass, more preferably 40% by mass to 50% by mass based on the total mass of the composition.

10. (d) The composition according to any one of claims 1 to 9, wherein the polyamide polycondensate is an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

11. The composition according to any one of claims 1 to 10, wherein the amount of (d) polyamide polycondensate in the composition is in the range of 1.5% by mass to 7.0% by mass, preferably 2.0% by mass to 6.5% by mass, more preferably 2.5% by mass to 6.0% by mass, based on the total mass of the composition.

12. The composition according to any one of claims 1 to 11, which is anhydrous.

13. The composition according to any one of claims 1 to 12, which is a cosmetic composition, preferably a UV-shielding cosmetic composition, more preferably a UV-shielding skin cosmetic composition.

14. A beauty method for keratinous substances, comprising the step of applying the composition according to any one of claims 1 to 13 onto the keratinous substances.

15. (a) at least one oil and, (b) at least one solid lipophilic UV filter, (c) at least one C 1～3 monoalcohol and Use of (d) at least one polyamide polycondensate for improving the UV shielding ability of a composition in a composition comprising: (c)C in the composition 1～3 The amount of the monoalcohol is 10% by mass or more based on the total mass of the composition, Use wherein the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) oil in the composition is 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

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