UV-shielding composition

Abstract

To provide a composition that is capable of blocking UV rays while imparting superior texture such as a non-tacky feeling during application, and / or superior appearance such as a non-tacky finish.SOLUTION: The present invention provides a composition that comprises: (a) at least two oils selected from diesters, preferably C10-C26 diesters, more preferably C12-C22 diesters, and still more preferably C14-C18 diesters; (b) at least one solid lipophilic UV shielding agent; (c) at least one C1-C3 monoalcohol; and (d) at least one polyamide polycondensate. The inventive composition is capable of blocking UV rays while imparting superior texture such as a non-tacky feeling during application, and / or superior appearance such as a non-tacky finish.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 blockers are utilized to provide protection from UV (ultraviolet) rays. Many anti-sunlight compositions intended to protect the skin from UV-A and / or UV-B have been proposed heretofore.

[0003] These anti-sunlight compositions often take the form of a gel or non-aqueous product, an oil-in-water emulsion or a water-in-oil emulsion, containing one or more insoluble, and / or liposoluble and / or water-soluble, organic and / or inorganic UV blockers capable of selectively absorbing harmful UV irradiation at various concentrations. These UV blockers and their amounts can be selected as a function of the desired sun protection factor (SPF).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Patent Document 8

Patent Document 9

Non-Patent Document

[0005]

Non-Patent Document 1

Non-Patent Document 2

Non-Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] It is desirable that the anti-sunlight composition not only imparts a UV shielding effect but also imparts an excellent texture such as a non-sticky touch during application and / or an excellent appearance such as a non-sticky finish.

[0007] An object of the present invention is to provide a composition capable of shielding UV rays while imparting an excellent texture such as a non-sticky touch during application and / or an excellent appearance such as a non-sticky finish.

Means for Solving the Problems

[0008] The above object of the present invention is (a) at least two kinds of oils selected from diesters, preferably C 10~26 diesters, more preferably C 12~22 diesters, even more preferably C 14~18 diesters, and (b) at least one solid lipophilic UV shielding agent, and (c) at least one C 1~3 monoalcohol, and (d) At least one polyamide polycondensate and can be achieved by a composition containing it.

[0009] (a) The oil can be selected from the group consisting of sebacates, carbonates, and mixtures thereof.

[0010] The amount of (a) oil in the composition according to the present invention may be in the range of 5% to 35% by mass, preferably 10% to 30% by mass, more preferably 15% to 25% by mass, based on the total mass of the composition.

[0011] (b) The solid lipophilic UV screening agent can be selected from the group consisting of ethylhexyl triazone, butyl methoxydibenzoylmethane, drometrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

[0012] The amount of (b) solid lipophilic UV screening agent 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.

[0013] (c) C 1~3 The monoalcohol can be selected from monohydric aliphatic alcohols such as ethanol, propanol, and isopropanol, and preferably (c) C 1~3 The monoalcohol is ethanol.

[0014] The amount of (c) C 1~3 monoalcohol in the composition according to the present invention may be in the range of 10% to 70% by mass, preferably 15% to 65% by mass, more preferably 20% to 60% by mass, based on the total mass of the composition.

[0015] (d) The polyamide polycondensate is an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

[0016] 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.

[0017] The composition according to the present invention may further contain (e) at least one liquid lipophilic UV screening agent.

[0018] (e) The liquid lipophilic UV screening agent can be selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

[0019] The composition according to the present invention may further contain (f) at least one additional oil different from the (a) oil, preferably selected from ester oils, more preferably selected from isopropyl myristate, isopropyl lauroyl sarcosinate, C12-15 alkyl benzoate, and mixtures thereof.

[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 screening cosmetic composition, more preferably a UV screening skin cosmetic composition.

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

Embodiments for Carrying Out the Invention

[0023] As a result of intensive studies, the present inventors have found that it is possible to provide a composition that can shield UV rays while imparting excellent texture such as a non-greasy touch during application and / or excellent appearance such as a non-greasy finish.

[0024] Therefore, one aspect of the present invention is (a) a diester, preferably C10~26 Diesters, more preferably C 12~22 Diesters, even more preferably C 14~18 At least two oils selected from diesters, and (b) At least one solid lipophilic UV screening agent, and (c) At least one C 1~3 Monoalcohol, and (d) At least one polyamide polycondensate to form a composition.

[0025] The cosmetic composition according to the invention can screen out UV rays because the composition contains (b) at least one solid lipophilic UV screening agent.

[0026] In the composition according to the invention, the (d) polyamide polycondensate can act as an SPF booster. The SPF value of the composition according to the invention can be higher than the SPF value of a composition which is the same as the composition according to the invention except that it does not contain the (d) polyamide polycondensate. Therefore, the composition according to the invention can have an increased SPF value. In other words, the composition according to the invention can effectively screen out UV rays.

[0027] On the other hand, the composition according to the invention can impart excellent texture such as a non-greasy feel during application and / or excellent appearance such as a non-greasy finish. For example, the composition according to the invention can impart a light feel and a non-greasy skin finish.

[0028] Therefore, the composition according to the invention can screen out UV rays while imparting excellent texture such as a non-greasy feel during application and / or excellent appearance such as a non-greasy finish.

[0029] In addition, the composition according to the invention can impart a refreshing feeling when in contact with the skin.

[0030] Furthermore, the composition according to the present invention can have good fluidity such as low viscosity. Therefore, the composition according to the present invention is suitable for spraying.

[0031] Furthermore, the composition according to the present invention can be stable so that crystals of (b) the solid lipophilic UV screening agent are not observed over time.

[0032] Therefore, the composition according to the present invention is useful as a cosmetic composition, preferably a UV screening cosmetic composition, more preferably a UV screening skin cosmetic composition.

[0033] Hereinafter, the composition according to the present invention will be described in more detail.

[0034] [Composition] The composition according to the present invention (a) at least two oils selected from diesters, preferably C 10~26 diesters, more preferably C 12~22 diesters, even more preferably C 14~18 diesters, and (b) at least one solid lipophilic UV screening agent, and (c) at least one C 1~3 monoalcohol, and (d) at least one polyamide polycondensate and.

[0035] (Diester oil) The composition according to the present invention contains (a) at least two oils selected from diesters. In other words, the composition according to the present invention contains two or more oils selected from diesters. Therefore, component (a) can be referred to as (a) diester oil.

[0036] Here, "oil" means a fatty compound or a fatty substance in the form of a liquid or a paste (non-solid) at room temperature (25°C) under atmospheric pressure (760 mmHg). (a) As the diester oil, those generally used in cosmetics can be used. (a) The diester oil may be non-volatile.

[0037] The total number of carbon atoms of the diester may be 10 or more, preferably 12 or more, more preferably 14 or more.

[0038] The total number of carbon atoms of the diester may be 26 or less, preferably 22 or less, more preferably 18 or less.

[0039] (a) The diester oil is preferably selected from C 10~26 diesters, more preferably C 12~22 diesters, still more preferably C 14~18 diesters.

[0040] (a) The diester oil can be selected from esters of saturated or unsaturated, linear or branched C3-C 26 aliphatic diacids and saturated or unsaturated, linear or branched C3-C 26 aliphatic monohydric alcohols, dihydric alcohols or polyhydric alcohols. It is preferable that the polyhydric alcohol is not a sugar or a polysaccharide.

[0041] C3-C 26 aliphatic diacids and / or C3-C 26 aliphatic monohydric alcohols, dihydric alcohols or polyhydric alcohols may preferably be branched.

[0042] In one embodiment of the present invention, saturated or unsaturated, linear or branched C3-C 26 aliphatic dicarboxylic acids and saturated or unsaturated, linear or branched, non-sugar C3-C 26 alcohols, for example saturated or unsaturated, linear or branched, non-sugar C3-C 26Esters with monohydric, dihydric or polyhydric alcohols can also be used as (a) diester oils.

[0043] (a) Examples of diester oils that can be mentioned include carbonates such as dicaprylyl carbonate; sebacates such as diethyl sebacate, diisopropyl sebacate and bis(2-ethylhexyl) sebacate; adipates such as diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, bis(2-ethylhexyl) adipate, diisostearyl adipate; maleates such as bis(2-ethylhexyl) maleate; glycol diesters such as neopentyl glycol diheptanoate, diethylene glycol diisononanoate; and mixtures thereof.

[0044] In one embodiment of the present invention, (a) the diester is selected from esters of C4-C 16 , preferably C6-C 14 , more preferably C8-C 12 dicarboxylic acids and C1-C4 monohydric alcohols, preferably branched C3-C4 monohydric alcohols.

[0045] In one embodiment of the present invention, (a) the diester oil can be selected from the group consisting of sebacates, carbonates, and mixtures thereof.

[0046] Examples of sebacates that can be mentioned include diesters of sebacic acid and two C3-C4 monohydric alcohols, preferably two branched C3-C4 monohydric alcohols, such as diisopropyl sebacate.

[0047] Examples of carbonates that can be mentioned include dialkyl carbonates, preferably dialkyl carbonates in which the two alkyl groups are the same or different, preferably the same, such as dicaprylyl carbonate.

[0048] In another embodiment of the present invention, (a) the diester oil may be a mixture of diisopropyl sebacate and dicaprylyl carbonate.

[0049] In the composition according to the present invention, the amount of (a) diester oil may be 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, based on the total mass of the composition.

[0050] On the other hand, the amount of (a) diester oil 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.

[0051] Therefore, the amount of (a) diester oil in the composition according to the present invention may be in the range of 5% by mass to 35% by mass, preferably 10% by mass to 30% by mass, more preferably 15% by mass to 25% by mass, based on the total mass of the composition.

[0052] (Solid lipophilic UV screening agent) The composition according to the present invention contains (b) at least one solid lipophilic UV screening agent. A single type of solid lipophilic UV screening agent may be used, or two or more different types of solid lipophilic UV screening agents may be used in combination.

[0053] As used herein, the term "UV" means ultraviolet rays and includes the UV-B region (wavelength 260 - 320 nm) and the UV-A region (wavelength 320 - 400 nm).

[0054] As used herein, the term "lipophilic" 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).

[0055] As used herein, the term "solid" means solid at 25°C under 1 atm.

[0056] The (b) solid organic UV screening agents used in the present invention 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.

[0057] 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.

[0058] Examples of dibenzoylmethane compounds include butyl methoxydibenzoylmethane or avobenzone sold under the trade name Parsol 1789 by DSM Nutritional Products.

[0059] Examples of phenylbenzotriazole compounds include droxmetrizole trisiloxane sold under the name Silatrizole by Rhodia Chimie.

[0060] Triazine compounds that can be mentioned include bis-(ethylhexyl oxy-phenol) methoxyphenyltriazine sold under the trade name Tinosorb S by BASF, especially ethylhexyl triazone sold under the trade name Uvinul T150 by BASF, diethylhexyl butamidotriazine sold under the trade name Uvasorb HEB by Sigma 3V, 2,4,6-tris(dineopentyl 4'-aminobenzal malonate)-s-triazine, 2,4,6-tris(diisobutyl 4'-aminobenzal malonate)-s-triazine, 2,4-bis(dineopentyl 4'-aminobenzal malonate)-6-(n-butyl 4'-aminobenzoate)-s-triazine, triazine silicone substituted by two aminobenzoate groups as described in EP0841341, especially 2,4-bis-(n-butyl 4'-aminobenzal malonate)-6-[(3-{1,3,3,3-tetramethyl-1-[(trimethylsiloxy]disiloxanyl}propyl)amino]-s-triazine.

[0061] Para-aminobenzoic acid compounds that can be mentioned include para-aminobenzoate (PABA), for example, ethyl PABA (para-aminobenzoate), ethyl dihydroxypropyl PABA, and ethylhexyl dimethyl PABA, glyceryl PABA, and PEG-25 PABA commercially available under the name "ESCALOL 5972" from ISP, and these salts such as those sold under the name "Uvinul P25" by BASF.

[0062] Benzylidene camphor compounds that can be mentioned include 3-benzylidene camphor commercially available under the name "MEXORYL SD" from CHIMEX, methyl benzylidene camphor commercially available under the name "EUSOLEX 6300" by MERCK, polyacrylamide methyl benzylidene camphor commercially available under the name "MEXORYL SW" from CHIMEX, and terephthalylidene dicamphor sulfonic acid commercially available under the name "Mexoryl SX" from Chimex.

[0063] Examples of phenylbenzimidazole compounds include phenylbenzimidazole sulfonic acid, commercially available under the name "Eusolex 232" by Merck, and disodium phenyl dibenzimidazole tetrasulfonate, commercially available under the name "Neo Heliopan AP" by Haarmann and Reimer.

[0064] An example of an imidazoline compound is ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.

[0065] Examples of dibenzoylmethane compounds include butyl methoxydibenzoylmethane, commercially available under the trademark "Parsol 1789" by Hoffmann-La Roche in particular; and isopropyldibenzoylmethane.

[0066] An example of a merocyanine compound is octyl 5-N,N-diethylamino-2-phenylsulfonyl-2,4-pentadienoate.

[0067] (b) The solid lipophilic UV sunscreen is preferably selected from the group consisting of ethylhexyl triazone, butyl methoxydibenzoylmethane, droxmetrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

[0068] The amount of (b) the solid lipophilic UV sunscreen 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.

[0069] On the other hand, the amount of (b) the solid lipophilic UV sunscreen 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.

[0070] Therefore, the amount of the (b) solid lipophilic UV screening agent 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.

[0071] (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 may be used in combination.

[0072] (c) C 1~3 The monoalcohol is a monohydric alcohol having one hydroxy group.

[0073] (c) C 1~3 The monoalcohol contains 1 to 3 carbon atoms.

[0074] (c) C 1~3 The 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.

[0075] The amount of the (c) C 1~3 monoalcohol 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.

[0076] The composition according to the present invention can have good fluidity such as low viscosity and good texture such as smoothness, particularly when the amount of the (c) C 1~3 monoalcohol is 10% by mass or more based on the total mass of the composition.

[0077] On the other hand, in the composition according to the present invention, the (c) C 1~3The amount of the monoalcohol may be 70% by mass or less, preferably 65% by mass or less, more preferably 60% by mass or less, based on the total mass of the composition.

[0078] The composition according to the invention is particularly (c)C 1~3 When the amount of the monoalcohol is 70% by mass or less based on the total mass of the composition, it can be stable so that the crystals of the (b) solid lipophilic UV screening agent are not observed over time.

[0079] Therefore, the (c)C in the composition according to the invention 1~3 The amount of the monoalcohol may be in the range of 10% to 70% by mass, preferably 15% to 65% by mass, more preferably 20% to 60% by mass, based on the total mass of the composition.

[0080] (Polyamide polycondensate) The composition according to the invention comprises (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.

[0081] The term "polycondensate" is understood to mean, within the meaning of the present invention, a polymer obtained by polycondensation, i.e. by a chemical reaction between monomers having different functional groups selected in particular from each functional group of acids, alcohols and amines.

[0082] The term "polymer" is understood to mean, within the meaning of the present invention, a compound having at least two repeating units, preferably at least three repeating units, and even better 10 or more repeating units.

[0083] (d) The lipophilic polyamide polycondensate can be particularly selected from polyamide polymers comprising a polymer backbone having hydrocarbon repeating units imparted together with a) at least one non-pendant amide unit, and optionally b) at least one optionally functionalized pendant fatty chain and / or at least one optionally functionalized terminal fatty chain containing at least 4 carbon atoms and bonded to these hydrocarbon units.

[0084] The term "functionalized chain" is understood to mean, within the meaning of the present invention, an alkyl chain containing one or more functional groups or reactive groups particularly selected from the groups of amide, hydroxyl, ether, oxyalkylene or polyoxyalkylene, halogen (including fluorinated or perfluorinated groups), ester, siloxane and polysiloxane. In addition, the hydrogen atoms of one or more fatty chains can be at least partially replaced by fluorine atoms.

[0085] 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 may be saturated or unsaturated, linear, branched or cyclic, and having hydrogen atoms and optionally oxygen atoms. These units each additionally contain at least one amide group, preferably non-pendant and occurring in the polymer backbone.

[0086] Advantageously, the pendant chain is directly bonded to at least one of the nitrogen atoms of the polymer backbone.

[0087] (d) The lipophilic polyamide polycondensate can contain silicone units or oxyalkylene units between the hydrocarbon units.

[0088] In addition, (d) the lipophilic polyamide polycondensate can advantageously contain from 40% to 98% fatty chains, even more preferably from 50% to 95%, in terms of the total number of amide units and fatty chains.

[0089] Preferably, the pendant fatty chains are attached to at least one of the nitrogen atoms of the amide units of the polymer. In particular, the fatty chains of this polyamide account for 40 to 98%, even better 50 to 95%, of the total number of amide units and fatty chains.

[0090] Advantageously, (d) the lipophilic polyamide polycondensate has a mass average molecular weight of less than 100,000 (specifically in the range of 1,000 to 100,000), especially less than 50,000 (specifically in the range of 1,000 to 50,000), more specifically 1,000 to 30,000, preferably 2,000 to 20,000, even better 2,000 to 10,000.

[0091] (d) The lipophilic polyamide polycondensate is insoluble in water, especially at 25°C. It contains no ionic groups, among other things.

[0092] Preferred lipophilic polyamide polycondensates that can be used in the present invention include polyamides branched by pendant fatty chains and / or terminal fatty chains having 6 to 120 carbon atoms, even better 8 to 120 carbon atoms, specifically 12 to 68 carbon atoms, and each terminal fatty 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 fatty chains at each end of the polyamide main chain.

[0093] These polymers are preferably polymers obtained from polycondensation between a dicarboxylic acid having at least 32 carbon atoms (specifically having 32 to 44 carbon atoms), a diamine having at least 2 carbon atoms (specifically 2 to 36 carbon atoms), and an amine selected from triamines having at least 2 carbon atoms (specifically 2 to 36 carbon atoms). The diacid is preferably a dimer derived from a fatty acid containing ethylenically unsaturation and having at least 16 carbon atoms, preferably 16 to 24 carbon atoms, such as oleic acid, linoleic acid or linolenic acid. The diamine is preferably ethylenediamine, hexylenediamine or hexamethylenediamine. The triamine is, for example, ethylenetriamine. For polymers containing one or two terminal carboxylic acid groups, it is advantageous to esterify these polymers with a monoalcohol having at least 4 carbon atoms, preferably 10 to 36 carbon atoms, still better 12 to 24 carbon atoms, even still better 16 to 24 carbon atoms, for example 18 carbon atoms.

[0094] (d) The lipophilic polyamide polycondensate is particularly of the formula (A):

[0095] [Chemical formula]

[0096] (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, particularly 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, independently for each instance, represents a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, or a direct bond to 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 part of a heterocyclic structure 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.

[0097] 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-).

[0098] These polymers are more specifically those described in US Patent No. 5783657 of Union Camp.

[0099] Each of these polymers is in particular of formula (B):

[0100]

Chemical formula

[0101] (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, independently for each instance, is an alkyl group or alkenyl group having at least 4 carbon atoms, in particular 4 to 24 carbon atoms, R2, independently for each instance, represents a C4 - C 42 hydrocarbon group, provided that 50% of the R2 groups represent a C 30 ~C 42 hydrocarbon group, R3, independently in each case, represents an organic group imparted together with at least 2 carbon atoms, a hydrogen atom, and optionally one or more oxygen atoms or nitrogen atoms, R4, independently in each case, represents a hydrogen atom, a C1 - C 10 alkyl group, or a direct bond with R3 or another R4 such that the nitrogen atom to which both R3 and R4 are attached forms part of a heterocyclic structure defined by R4 - N - R3, where at least 50% of the R4 groups represent hydrogen atoms) can satisfy.

[0102] In a specific case of formula (B), the optionally functionalized terminal fatty chain within the meaning of the present invention is the terminal chain bonded to the last nitrogen atom of the polyamide main chain.

[0103] In particular, the ester groups of formula (B) that form part of the terminal fatty chain and / or pendant fatty chain within the meaning of the present invention account for 15 - 40%, still preferably 20 - 35%, of the total number of ester groups and amide groups.

[0104] Furthermore, m preferably represents an integer in the range of 1 - 5, still more preferably an integer greater than 2.

[0105] 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.

[0106] 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.

[0107] The hydrocarbon group may be saturated or unsaturated, and may be a linear, cyclic or branched group. Further, the alkyl group and the alkylene group may be saturated or unsaturated, and may be a linear or branched group.

[0108] Generally, the polymer of formula (B) is imparted 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 the value 0), i.e., a diester.

[0109] According to a particularly preferred form of the present invention, what will be used is a blend of copolymers of C 36 condensed with ethylenediamine, wherein the terminal ester groups result from the esterification of the remaining acid terminals 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 6,000. These blends are sold in particular by Arizona Chemical under the trade names UNICLEAR 80 and UNICLEAR 100 VG in the form of an 80% (active material) gel and a 100% (active material) gel in mineral oil, respectively. They have a softening point of 88°C to 94°C.

[0110] Also, examples of the polyamide polycondensate corresponding to the general formula (A) include polymers containing at least one terminal fatty chain bonded to the polymer main chain 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 U.S. Patent No. 6,503,522.

[0111] According to a particularly preferred form of the present invention, what will be used more particularly is hydrogenated dilinoleic acid, ethylenediamine and di(C14 ~C 18 ) 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.

[0112] According to another embodiment, the polyamide of formula (A) may also be a poly(ester - amide) containing ester terminals (ester - terminated poly(ester - amide) or ETPEA), for example, those whose preparation is described in U.S. Patent No. 6552160.

[0113] 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.

[0114] Also, polyamide polycondensates that can be mentioned as being usable 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 (in that way, it is said to be an ether - terminated poly(ether)amide). Such polymers are described, for example, in U.S. Patent No. 6399713.

[0115] The polyamide polycondensate (d) according to the present invention may advantageously have a softening point above 65°C and can range up to 190°C. Preferably, it exhibits a softening point in the range of 70 - 130°C, even better in the range of 80 - 105°C. The polyamide is in particular a non - wax - like polymer.

[0116] Also, examples of the (d) polyamide polycondensate that can be used in the present invention include 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), and the carbonyl groups and amine groups of all adjacent units are condensed via amide bonds. These polyamide resins are, in particular, those sold under the trademark Versamid® by General Mills, Inc. and Henkel Corp. (Versamid 930, 744, or 1655), or those sold under the trademark Onamid® by Olin Mathieson Chemical Corp., particularly Onamid S or C. These resins have a mass average molecular weight in the range of 6,000 to 9,000. Further information on these polyamides can be found in U.S. Patent No. 3,465,705 and U.S. Patent No. 3,148,125. More specifically, Versamid® 930 or 744 is used.

[0117] Also usable are polyamides sold under the reference names of Uni-Rez by Arizona Chemical (2658, 2931, 2970, 2621, 2613, 2624, 2665, 1554, 2623, 2662), and products sold under the reference name Macromelt 6212 by Henkel. Further information on these polyamides can be found in U.S. Patent No. 5,500,209.

[0118] It is also possible to use polyamide resins derived from vegetables, such as those described in U.S. Patent No. 5,783,657 and U.S. Patent No. 5,998,570.

[0119] It is particularly preferred that the (d) polyamide polycondensate is an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

[0120] 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.

[0121] 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.

[0122] Therefore, 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.

[0123] (Liquid lipophilic UV screening agent) The composition according to the present invention may contain (e) at least one liquid lipophilic UV screening agent. A single type of liquid lipophilic UV screening agent may be used, or two or more different types of liquid lipophilic UV screening agents may be used in combination.

[0124] The term "UV" as used herein means ultraviolet rays and includes the UV-B region (wavelength 260 - 320 nm) and the UV-A region (wavelength 320 - 400 nm).

[0125] 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).

[0126] The term "liquid" as used herein means that it is solid at 25°C under 1 atm.

[0127] Examples of the (e) liquid lipophilic UV screening agent include salicylic acid compounds, cinnamate compounds, β,β-diphenylacrylate compounds, phenylbenzimidazole compounds, and benzalmalonate compounds.

[0128] Examples of salicylic acid compounds include homosalate, which is commercially available under the name "Eusolex HMS" from Rona / EM Industries, and ethylhexyl salicylate, which is commercially available under the name "NEO HELIOPAN OS" from Symrise.

[0129] Examples of cinnamate compounds include ethylhexyl methoxycinnamate, isopropyl ethoxycinnamate, which are commercially available under the name "PARSOL CX" from DSM NUTRITIONAL PRODUCTS, isoamyl methoxycinnamate, diisopropylmethylcinnamate, cinoxate, and glyceryl ethylhexanoate dimethoxycinnamate and DEA methoxycinnamate, which are commercially available under the name "NEO HELIOPAN E 1000" from Symrise, and salts thereof.

[0130] Examples of β,β-diphenylacrylate compounds include octocrylene, which is commercially available under the name "UVINUL N539" from BASF, and etocrylene, which is commercially available under the name "UVINUL N35" from BASF.

[0131] Examples of benzalmalonate compounds include polyorganosiloxanes containing a benzalmalonate moiety, such as polysilicone-15, which is commercially available under the name "Parsol SLX" from DSM NUTRITIONAL PRODUCTS, and di-neopentyl 4'-methoxybenzalmalonate.

[0132] (e) The liquid lipophilic UV screening agent is preferably selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

[0133] The amount of the (e) liquid lipophilic UV screening agent in the composition according to the present invention, when present, 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.

[0134] On the other hand, the amount of the (e) liquid lipophilic UV screening agent in the composition according to the present invention, when present, may be 40% by mass or less, preferably 35% by mass or less, more preferably 30% by mass or less, based on the total mass of the composition.

[0135] Therefore, the amount of the (e) liquid lipophilic UV screening agent in the composition according to the present invention, when present, may be in the range of 10% by mass to 40% by mass, preferably 15% by mass to 35% by mass, more preferably 20% by mass to 30% by mass, based on the total mass of the composition.

[0136] (Additional oil) The composition according to the present invention may contain (f) at least one additional oil. A single type of additional oil may be used, or two or more different types of additional oils may be used in combination.

[0137] (f) The additional oil is different from the (a) diester oil.

[0138] Here, "oil" means a fatty compound or a fatty substance in a liquid or paste (non-solid) form at room temperature (25 °C) under atmospheric pressure (760 mmHg). As the (f) additional oil, those generally used in cosmetics other than the (a) diester oil can be used alone or in combination. The (f) additional oil may be volatile or non-volatile, and is preferably non-volatile.

[0139] (f) The additional 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, an ester oil other than the diester oil, or an ether oil; or a mixture thereof.

[0140] (f) The additional oil can be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils, and hydrocarbon oils.

[0141] 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, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0142] Examples of synthetic oils that can be mentioned are alkane oils such as isododecane and isohexadecane, ester oils other than (a) diester oils, ether oils, and artificial triglycerides.

[0143] The ester oil is preferably a liquid ester of a saturated or unsaturated, linear or branched C1-C 26 fatty monocarboxylic acid or polycarboxylic acid and a saturated or unsaturated, linear or branched C1-C 26 fatty monohydric alcohol or polyhydric alcohol, and the total number of carbon atoms of these esters other than (a) diester oils is 10 or more.

[0144] Preferably, for the esters of monohydric alcohols, at least one of the alcohol and the acid from which the ester of the present invention is derived is branched.

[0145] Among the monoesters of monocarboxylic acids and monohydric alcohols, those that can be mentioned are alkyl palmitates such as ethyl palmitate, ethylhexyl palmitate, and isopropyl palmitate; alkyl myristates such as isopropyl myristate and ethyl myristate; alkyl stearates such as isocetyl stearate; isononanoates such as 2-ethylhexyl isononanoate and isononyl isononanoate; and neopentanoates such as isodecyl neopentanoate and isostearyl neopentanoate.

[0146] C4-C 22A monoester or triester of a dicarboxylic acid or tricarboxylic acid with a C1-C 22 alcohol, and a monoester or triester of a monocarboxylic acid, dicarboxylic acid or tricarboxylic acid with a non-sugar C4-C 26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohol can also be used. Specific examples include triisopropyl citrate, triisocetyl citrate, triisostearyl citrate, glyceryl trilactate, glyceryl trioctanoate, trioctyldodecyl citrate and trioleyl citrate.

[0147] As the ester oil, N-acyl amino acid esters can also be used. An example of an N-acyl amino acid ester is isopropyl lauroyl sarcosinate.

[0148] As the ester oil, esters of sugars with fatty acids, preferably C6-C 30 and more preferably C 12 -C 22 fatty acids (sugar esters) can be used. It is recalled that the term "sugar" means a hydrocarbon compound containing several alcohol functional groups, with or without aldehyde or ketone functional groups, and containing at least 4 carbon atoms and retaining oxygen. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0149] 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.

[0150] The sugar esters of fatty acids are the aforementioned sugars and linear or branched, saturated or unsaturated, preferably C6-C 30 and more preferably C 12 -C 22It can be particularly selected from the group consisting of esters or ester mixtures with fatty acids. When they are unsaturated, these compounds can have 1 to 3 conjugated or non-conjugated carbon-carbon double bonds.

[0151] The esters of this variant form can also be selected from monoesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0152] These esters may 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, such as, inter alia, mixed esters of oleopalmitic acid, oleostearic acid and palmitostearic acid, and pentaerythrityl tetraethylhexanoate.

[0153] More specifically, what is used are monoesters, and especially the monooleic 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.

[0154] Examples of preferred ester oils include, for example, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, (caprylic acid / capric acid) 2-ethylhexyl, 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), and mixtures thereof.

[0155] 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. Examples of such ester oils include C12-15 alkyl benzoate.

[0156] Examples of artificial triglycerides include, for example, caprylyl capric glyceride, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(capric acid / caprylic acid), and glyceryl tri(capric acid / caprylic acid / linolenic acid).

[0157] 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.

[0158] Preferably, the silicone oil is selected from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxane (PDMS), and liquid polyorganosiloxanes containing at least one aryl group.

[0159] These silicone oils may also be organically modified. The organically modified silicones that can be used according to the present invention are silicone oils as defined above, which contain one or more organic functional groups bonded through hydrocarbon-based groups in their structures.

[0160] The organopolysiloxanes are more specifically defined in Walter Noll's "Chemistry and Technology of Silicones" (1968), Academic Press. They may be volatile or non-volatile.

[0161] 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 selected from the following: (i) Cyclic polydialkylsiloxanes containing 3 to 7, preferably 4 to 5 silicon atoms. These include, for example, octamethylcyclotetrasiloxane sold by Union Carbide under the name Volatile Silicone® 7207, or by Rhodia under the name Silbione® 70045 V2, decamethylcyclopentasiloxane sold by Union Carbide under the name Volatile Silicone® 7158, by Rhodia under the name Silbione® 70045 V5, and dodecamethylcyclopentasiloxane sold by Momentive Performance Materials under the name Silsoft 1217, and mixtures thereof. Also mentionable are cyclocopolymers of the type dimethylsiloxane / methylalkylsiloxane, for example of the formula:

[0162] [Chemical]

[0163] It is Silicone Volatile® FZ 3109 sold by Union Carbide Corporation. Also mentionable are mixtures of cyclic polydialkylsiloxanes and 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) Linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity of 5×10 -6 m 2 / s or less at 25°C. An example is decamethyltetrasiloxane sold under the name SH 200 by Toray Silicone Co., Ltd. Silicones belonging to this category are also described in the paper published in Cosmetics and Toiletries, Vol. 91, January 1976, pp. 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.

[0164] Non-volatile polydialkylsiloxanes can also be used. These non-volatile silicones are more particularly selected from polydialkylsiloxanes, and mainly mentionable among them is polydimethylsiloxane containing trimethylsilyl end groups.

[0165] Non-limiting examples among these polydialkylsiloxanes are the following commercially available products: - The 47 and 70047 series of Silbione® oil sold by Rhodia, or Mirasil® oil, for example, 70047 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).

[0166] Also mentionable is polydimethylsiloxane containing dimethylsilanol end groups, known by the name dimethiconol (CTFA), for example, the 48 series of oils manufactured by Rhodia.

[0167] Among the silicones containing aryl groups, there are polydiarylsiloxanes, especially polydiphenylsiloxane and polyalkylarylsiloxane. Examples that can be mentioned include products sold under the following names: - The 70641 series of Silbione® oil manufactured by Rhodia, - The oils of the Rhodorsil® 70633 series and 763 series manufactured by Rhodia, - Dow Corning 556 Cosmetic Grade Fluid oil manufactured by Dow Corning, - The PK series of silicones manufactured by Bayer, for example, product PK20, - Certain oils of the SF series manufactured by General Electric, for example, SF 1023, SF 1154, SF 1250 and SF 1265.

[0168] The organically modified liquid silicone may contain, inter alia, polyethyleneoxy groups and / or polypropyleneoxy groups. Therefore, examples that can be mentioned are silicone KF-6017 proposed by Shin-Etsu Chemical Co., Ltd., and Silwet (registered trademark) L722 oil and L77 oil manufactured by Union Carbide Corporation.

[0169] The hydrocarbon oil can be selected from the following: - Linear or branched, optionally cyclic C6-C 16 Lower alkanes. Examples that can be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins, such as isocetane, 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 (registered trademark), and squalane.

[0170] Preferred examples of the hydrocarbon oil that can be mentioned are, for example, linear or branched hydrocarbons, such as isocetane, isododecane, squalane, mineral oil (such as liquid paraffin), paraffin, petrolatum or petroleum jelly, naphthalene, etc.; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymer; and mixtures thereof.

[0171] Preferably, (f) the additional oil is selected from ester oils, more preferably isopropyl myristate, isopropyl lauroyl sarcosinate, C12-15 alkyl benzoate, and mixtures thereof.

[0172] When present, the amount of (f) the additional oil 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.

[0173] On the other hand, the amount of (f) additional oil in the composition according to the present invention, if present, 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.

[0174] Therefore, the amount of (f) additional oil in the composition according to the present invention, if present, may be 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.

[0175] (Water) The composition according to the present invention is preferably anhydrous.

[0176] The term "anhydrous" as used herein means that the composition according to the present invention may contain a very small amount of water, preferably no 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.

[0177] (Other embodiments) According to the present invention, the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) diester oil and (f) additional oil (if present) in the composition according to the present invention may be 0.15 or less, preferably 0.14 or less, more preferably 0.13 or less.

[0178] 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 may be limited such that the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) diester oil and (f) additional oil (if present) 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 may have a sufficiently increased SPF value.

[0179] On the other hand, the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) diester oil and (f) additional oil (if present) 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.

[0180] Therefore, the mass ratio of the amount of (d) polyamide polycondensate / the amount of (a) diester oil and (f) additional oil (if present) in the composition according to the present invention may be 0.01 to 0.15, preferably 0.02 to 0.14, more preferably 0.03 to 0.13.

[0181] (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 other than component (c), silicones and silicone derivatives other than component (f), natural extracts derived from animals or plants, waxes, preservatives, perfumes, dyes, and pigments, etc., within a range that does not impair the effects of the present invention.

[0182] The composition according to the present invention may contain the above optional additives in an amount of 0.001% by mass to 30% by mass, preferably 0.01% by mass to 20% by mass, more preferably 0.1% by mass to 10% by mass, based on the total mass of the composition.

[0183] [Preparation] The composition according to the present invention can be prepared by mixing components (a) to (d) as essential components and the optional components described above.

[0184] 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.

[0185] The composition according to the present invention can be homogeneous.

[0186] The composition according to the invention can be in the form of a transparent or translucent liquid, gel or solid. Specifically, the composition according to the invention can be in the form of a transparent liquid, gel or solid because (b) crystallization of the solid lipophilic UV screening agent can be reduced or avoided.

[0187] Transparency can be measured by measuring the transmittance using an absorptiometer in the visible region (for example, transparency was measured with a V-550 (JASCO) as the average of the visible light transmittance (between 400 and 800 nm) in a 2 mm wide cell). The measurement is carried out on the undiluted composition. The blank is determined using distilled water.

[0188] The composition of the 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%.

[0189] [Method] The composition according to the invention can be used in a cosmetic method for keratinous substances, which method comprises the step of applying the composition according to the invention to the keratinous substances. Keratinous substances herein mean materials containing keratin as a main constituent, examples of which include skin, mucous membranes, lips, nails and the like.

[0190] Since the composition according to the invention contains (b) a solid lipophilic UV screening agent, it is preferred that the composition according to the invention be used to protect keratinous substances from UV rays. For example, the composition according to the invention can be used as an anti-sun product such as a sunscreen.

[0191] Accordingly, the composition according to the invention may be a cosmetic composition, preferably a UV screening cosmetic composition, more preferably a UV screening skin cosmetic composition.

[0192] [Use] Another aspect of the invention is (b) at least one solid lipophilic UV screening agent, and (c) at least one C 1~3 monoalcohol, and (d) at least one polyamide polycondensate and in the composition, the use of at least two oils selected from (a) diesters, preferably C 10~26 diesters, more preferably C 12~22 diesters, even more preferably C 14~18 diesters, which may relate to the use for protecting keratinous substances from UV rays.

[0193] Another aspect of the present invention is (b) at least one solid lipophilic UV screening agent, and (c) at least one C 1~3 monoalcohol, and (d) at least one polyamide polycondensate and in the composition, the use of at least two oils selected from (a) diesters, preferably C 10~26 diesters, more preferably C 12~22 diesters, even more preferably C 14~18 diesters, which may relate to the use for imparting to the composition an excellent texture such as a non-greasy touch during application and / or an excellent appearance such as a non-greasy finish.

[0194] The above composition may further comprise (e) at least one liquid lipophilic UV screening agent and / or (f) at least one additional oil different from (a) oil.

[0195] The above description regarding components (a) to (d) and optional components such as components (e) and (f) for the composition according to the present invention can be applied to the above description regarding the use according to the present invention.

[0196] According to a preferred embodiment, the composition according to the present invention, based on the total mass of the composition, 5% to 35% by mass of at least two oils selected from the group consisting of (a) sebacates, carbonates, and mixtures thereof 1% to 30% by mass of at least one solid lipophilic UV screening agent selected from the group consisting of (b) ethylhexyl triazone, butyl methoxydibenzoylmethane, drometrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof, 10% to 70% by mass of at least one C 1~3 monoalcohol selected from monohydric aliphatic alcohols such as (c) ethanol, propanol, and isopropanol, and 0.1% to 7.0% by mass of (d) at least one polyamide polycondensate is included.

[0197] According to a preferred embodiment, the composition according to the invention, relative to the total mass of the composition, a mixture of (a) diisopropyl sebacate and dicaprylyl carbonate in an amount of 15% to 25% by mass, 3% to 20% by mass of at least one solid lipophilic UV screening agent selected from the group consisting of (b) ethylhexyl triazone, butyl methoxydibenzoylmethane, drometrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof, 20% to 60% by mass of (c) ethanol, and 1.0% to 6.0% by mass of (d) an ethylenediamine / dimer dilinoleic acid stearyl copolymer is included.

Examples

[0198] The present invention will be described in more detail through examples, but should not be construed as limiting the scope of the present invention.

[0199] (Examples 1 and Comparative Example 1) The following compositions according to Example 1 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 the "mass %" of the components with respect to the total mass of each composition, unless otherwise specified. The symbols (a) to (d) in Table 1 correspond to those in the "claims".

[0200] [Table 1]

[0201] [Evaluation] (Texture) Each of four evaluators applied the compositions according to Example 1 and Comparative Example 1 onto the skin and evaluated the texture (non-greasy feel) during application imparted by each composition, and scored them according to the following evaluation criteria. Very good: 5 Good: 4 Average: 3 Poor: 2 Very poor: 1

[0202] Those scores were averaged.

[0203] The results are shown in the "Texture" row in Table 1.

[0204] (Appearance) Each of four evaluators applied the compositions according to Example 1 and Comparative Example 1 onto the skin and evaluated the appearance (non-greasy finish) after application imparted by each composition, and scored them according to the following evaluation criteria. Very good: 5 Good: 4 Average: 3 Poor: 2 Very poor: 1

[0205] Those scores were averaged.

[0206] The results are shown in the "Appearance" row in Table 1.

[0207] (Abstract) (a) The composition according to Example 1 containing at least two oils selected from diesters was able to impart excellent texture such as a non-greasy feel during application and excellent appearance such as a non-greasy finish.

[0208] On the other hand, the composition according to Comparative Example 1 containing only one diester oil was unable to impart excellent texture such as a non-greasy feel during application or excellent appearance such as a non-greasy finish.

[0209] The above results mean that at least two oils selected from (a) diesters should be used to impart excellent texture such as a non-greasy feel during application and / or excellent appearance such as a non-greasy finish.

Claims

1. (a) Diesters, preferably C 10～26 Diesters, more preferably C 12～22 Diesters, even more preferably C 14～18 At least two oils selected from diesters, and (b) at least one solid lipophilic UV screening agent, and (c) at least one C 1～3 monoalcohol, and (d) at least one polyamide polycondensate A composition comprising.

2. (a) The composition according to claim 1, wherein the oil is selected from the group consisting of sebacates, carbonates, and mixtures thereof.

3. The composition according to claim 1 or 2, wherein the amount of (a) oil in the composition ranges from 5% to 35% by mass, preferably from 10% to 30% by mass, more preferably from 15% to 25% by mass, based on the total mass of the composition.

4. (b) The composition according to any one of claims 1 to 3, wherein the solid lipophilic UV screening agent is selected from the group consisting of ethylhexyl triazone, butyl methoxydibenzoylmethane, droxmetrizole trisiloxane, bis-ethylhexyloxyphenol methoxyphenyl triazine, and mixtures thereof.

5. The composition according to any one of claims 1 to 4, wherein the amount of (b) solid lipophilic UV screening agent in the composition ranges from 1% to 30% by mass, preferably from 2% to 25% by mass, more preferably from 3% to 20% by mass, based on the total mass of the composition.

6. (c) C 1～3 The monoalcohol is selected from monohydric aliphatic alcohols such as ethanol, propanol, and isopropanol, and preferably (c) C 1～3 The composition according to any one of claims 1 to 5, wherein the monoalcohol is ethanol.

7. (c)C in the composition 1～3 The composition according to any one of claims 1 to 6, wherein the amount of the monoalcohol is in the range of 10% by mass to 70% by mass, preferably 15% by mass to 65% by mass, more preferably 20% by mass to 60% by mass, based on the total mass of the composition.

8. (d) The composition according to any one of claims 1 to 7, wherein the polyamide polycondensate is an ethylenediamine / dimer dilinoleic acid stearyl copolymer.

9. The composition according to any one of claims 1 to 8, wherein the amount of (d) polyamide polycondensate in the composition ranges from 0.1% to 7.0% by mass, preferably from 0.5% to 6.5% by mass, more preferably from 1.0% to 6.0% by mass, based on the total mass of the composition.

10. (e) The composition according to any one of claims 1 to 9, further comprising at least one liquid lipophilic UV screening agent.

11. (e) The composition according to claim 10, wherein the liquid lipophilic UV screening agent is selected from the group consisting of ethylhexyl salicylate, octocrylene, homosalate, and mixtures thereof.

12. The composition according to any one of claims 1 to 11, further comprising (f) at least one additional oil different from (a) oil, preferably selected from ester oils, more preferably selected from isopropyl myristate, isopropyl lauroyl sarcosinate, C12-15 alkyl benzoate, and mixtures thereof.

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

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

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

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