Sunblock cosmetic

Abstract

To provide a sunscreen cosmetic that reliably stays on the skin and has superior rubbing resistance.SOLUTION: The sunscreen cosmetic contains components (A), (B), and (C). (A) is 0.05-1.5 mass% of a wax having a melting point of 55°C or higher; (B) is a (meth)acrylic silicone resin; and (C) is 2.5-45 mass% of a UV blocking agent.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a sunscreen cosmetic.

Background Art

[0002] For sunscreen cosmetics, not only an ultraviolet ray protection effect but also an easy-to-use feeling in combination are required. For example, in order to obtain a moist and good-spreading feeling in use and an excellent ultraviolet ray protection effect, an oil-in-water type sunscreen cosmetic has been proposed in which a specific amount of a solid or semi-solid oil such as an alkyl-modified silicone wax is blended and the total amount of the oil phase is set to a certain amount or less (Patent Document 1). However, the sunscreen cosmetic disclosed in Patent Document 1 has insufficient abrasion resistance and is likely to peel when the surface of the applied portion is rubbed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In addition, in order to improve the abrasion resistance when an acrylic polymer having a dendrimer-type siloxane structure in the side chain and an ultraviolet absorber are used in combination, it has been proposed to formulate a (acrylates / alkyl acrylate (C10-30)) cross-polymer in addition to these components to obtain a sunscreen cosmetic (Patent Document 2). However, there is still room for improvement in the abrasion resistance of the cosmetic. Further, the cosmetic disclosed in Patent Document 2 was sticky after application and had insufficient skin-soothing feeling.

[0005] The present invention relates to providing a sunscreen cosmetic having good skin-soothing property and excellent abrasion resistance.

Means for Solving the Problem

[0006] The inventors of the present invention have found that by combining a wax having a melting point of 55°C or higher with a specific amount of a (meth)acrylic silicone resin together with an ultraviolet absorber, a sunscreen cosmetic having good skin feel and excellent abrasion resistance can be obtained, and thus completed the present invention.

[0007] That is, the present invention provides a sunscreen cosmetic containing the following components (A), (B) and (C). (A) Wax having a melting point of 55°C or higher: 0.05 to 1.5% by mass (B) (Meth)acrylic silicone resin (C) Ultraviolet absorber: 2.5 to 45% by mass

Effect of the Invention

[0008] The sunscreen cosmetic of the present invention has good skin feel and excellent abrasion resistance.

Mode for Carrying Out the Invention

[0009] <Component (A)> The sunscreen cosmetic of the present invention contains (A) a wax having a melting point of 55°C or higher. The wax of component (A) is a concept excluding components (B) and (D). The melting point of the wax of component (A) used in the present invention is 55°C or higher. From the viewpoints of skin feel, abrasion resistance, etc., it is preferably 57.5°C or higher, more preferably 60°C or higher. From the viewpoints of ease of production, etc., it is preferably 140°C or lower, more preferably 125°C or lower, particularly preferably 110°C or lower. As a specific range, 55°C or higher and 140°C or lower is preferable, 57.5°C or higher and 125°C or lower is more preferable, and 60°C or higher and 110°C or lower is still more preferable. In this specification, the melting point means the melting point measured according to JIS K0064.

[0010] As the wax of component (A), an oil-soluble wax is preferred. Also, a wax that is solid at 25 °C under 1 atm is preferred. Moreover, as for the wax of component (A), if the melting point is 55 °C or higher, it may be a natural wax or a synthetic wax. For example, in addition to hydrocarbon waxes and silicone waxes, plant waxes such as carnauba wax, candelilla wax, rice wax, sunflower wax, and hydrogenated jojoba oil; animal waxes such as beeswax; fluorine-based waxes; synthetic beeswax, etc. may be mentioned. Note that only one of these may be used alone or two or more may be used in combination. Among these, from the viewpoints of skin soothing and abrasion resistance, etc., one or more selected from hydrocarbon waxes and silicone waxes are preferred, a combination of a hydrocarbon wax and a silicone wax, or a silicone wax is more preferred, and a combination of a hydrocarbon wax and a silicone wax is particularly preferred. When a hydrocarbon wax and a silicone wax are used in combination, as the mass ratio of (A-2) silicone wax to (A-1) hydrocarbon wax [(A-2) / (A-1)], from the viewpoint of abrasion resistance, 0.1 to 10 is preferred, 0.25 to 4 is more preferred, and 0.5 to 2 is even more preferred.

[0011] Examples of (A-1) hydrocarbon waxes include mineral hydrocarbon waxes such as ozokerite and ceresin wax; petroleum hydrocarbon waxes such as paraffin wax and microcrystalline wax; and synthetic hydrocarbon waxes such as Fischer-Tropsch wax, polyethylene wax, and α-olefins having 28 or more carbon atoms. The carbon number of the α-olefin is preferably 30 to 60, more preferably 30 to 50. Also, examples of the α-olefin include linear α-olefins and branched α-olefins, with linear α-olefins being preferred. Among the hydrocarbon waxes, from the viewpoint of abrasion resistance, ceresin wax, paraffin wax, microcrystalline wax, and synthetic hydrocarbon waxes are preferred, and ceresin wax and synthetic hydrocarbon waxes are particularly preferred.

[0012] (A-2) As the silicone wax, an alkyl-modified silicone wax is preferred. As the alkyl-modified silicone wax, from the viewpoints of abrasion resistance and feel in use (non-stickiness), those modified with an alkyl group having 9 to 80 carbon atoms are preferred. The above alkyl group may be linear or branched. From the viewpoint of abrasion resistance, the carbon number of the alkyl group is preferably 16 or more, more preferably 20 or more, still more preferably 24 or more, particularly preferably 28 or more. Also, from the viewpoints of ease of production, feel in use (non-film feeling), etc., it is preferably 70 or less, more preferably 60 or less, particularly preferably 50 or less. Further, the substitution position of this alkyl group is arbitrary, and the substitution form may be any of single-terminal type, both-terminal type, side-chain type, etc. Also, the number of substituted alkyl groups is arbitrary, and it may be 1 or 2 or more in the molecule. When the number of substituted alkyl groups is 2 or more, the 2 or more alkyl groups may be the same or different. Note that a mixture of silicone waxes modified with different alkyl groups may also be used.

[0013] Also, specific examples of the alkyl-modified silicone wax include alkylmethylcon waxes such as alkyl (C26-28) methylcon and alkyl (C30-45) methylcon; alkyl dimethylcon waxes such as alkyl (C30-45) dimethylcon; and silsesquioxane resin waxes such as alkyl (C30-45) dimethylsilyl polypropylsilsesquioxane. Among these, one kind alone or a combination of two or more kinds may be used. Among these, from the viewpoints of skin soothing, abrasion resistance, etc., alkylmethylcon wax and silsesquioxane resin wax are preferred, and alkylmethylcon wax is particularly preferred.

[0014] For waxes with a melting point of 55°C or higher, commercially available products or those synthesized according to conventional methods can be used. Examples of commercially available ceresin waxes include Ceresin #810 (manufactured by Nikko Rica Co., Ltd.), Ceresin Wax SP-1020P (manufactured by STRAHL&PITSCH), and the like. Examples of commercially available paraffin waxes include Paraffin Wax 140, 145, 150, 155, HNP-3, 5, 9 (all manufactured by Nippon Seiro Co., Ltd.), and the like. Examples of commercially available microcrystalline waxes include Multiwax W-445, W-835 (both manufactured by SONNEBORN), Paracera M (manufactured by Paramelt), Hi-Mic-1045, 1070, 2045, HNP-0190 (all manufactured by Nippon Seiro Co., Ltd.), Refined Microcrystalline Wax (manufactured by Nikko Rica Co., Ltd.), 155° Micro Wax (manufactured by Nippon Oil Co., Ltd.), and the like. Examples of commercially available polyethylene waxes include PERFORMALENE 400, 500, 655, 700EP, PL (all manufactured by NEW PHASE TECHNOLOGIES), LASH WAX P (deodorized product) (manufactured by Nippon Natural Products Co., Ltd.), Polyethylene Wax PW-655N (manufactured by Toshiba Color Pigment Co., Ltd.), and the like. In addition, examples of commercially available synthetic hydrocarbon waxes include Lip Wax A-4 (manufactured by Nippon Natural Products Co., Ltd.) in addition to the above-mentioned polyethylene waxes. Also, examples of commercially available alkyl (C26-28) methicone include BELSIL CM 7026 VP (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., melting point 70°C), and the like. Examples of commercially available alkyl (C30-45) dimethicone include SF-1642 (manufactured by Momentive Performance Materials Japan Co., Ltd., melting point 60 - 70°C), and the like. Examples of commercially available alkyl (C30-45) dimethylsilyl polypropylsilsesquioxane include SW-8005 C30 Resin Wax (manufactured by Toray Dow Corning Co., Ltd., melting point 63 - 71°C), and the like. Examples of commercially available mixtures of alkyl (C30-45) methicone and olefin (C30-45) include AMS-C30 Cosmetic Wax (manufactured by Toray Dow Corning Co., Ltd., melting point 73 - 77°C), and the like. In addition, the wax with a melting point of 55°C or higher may be used alone or in combination of two or more.

[0015] The content of the wax with a melting point of 55°C or higher is 0.05 to 1.5% by mass in the sunscreen cosmetic of the present invention. By setting the content of the wax with a melting point of 55°C or higher within such a range, the skin feel becomes good. From the viewpoint of ease of production, etc., the content of the wax with a melting point of 55°C or higher is preferably 0.075% by mass or more, more preferably 0.1% by mass or more in the sunscreen cosmetic of the present invention. Also, from the viewpoint of ease of production, etc., the content of the wax with a melting point of 55°C or higher is preferably 1.25% by mass or less, more preferably 1% by mass or less in the sunscreen cosmetic of the present invention. As a specific range, in the sunscreen cosmetic of the present invention, 0.075 to 1.25% by mass is preferable, and 0.1 to 1% by mass is more preferable. Further, from the viewpoint of skin feel, the content of (A-2) silicone wax is preferably 0.25% by mass or more, more preferably 0.5% by mass or more in the sunscreen cosmetic of the present invention. Also, from the viewpoint of skin feel, the content of (A-2) silicone wax is preferably 1.25% by mass or less, more preferably 1% by mass or less in the sunscreen cosmetic of the present invention. As a specific range, in the sunscreen cosmetic of the present invention, 0.25 to 1.25% by mass is preferable, and 0.5 to 1% by mass is more preferable.

[0016] <Component (B)> The sunscreen cosmetic of the present invention contains (B) a (meth)acrylic silicone resin. By containing the (meth)acrylic silicone resin, the abrasion resistance is improved. In the present specification, the (meth)acrylic silicone resin of component (B) means a resin having a segment containing a repetition of structural units derived from (meth)acrylate monomers in the main chain and a silicone segment in the side chain. The silicone segment may have a chain structure or a branched structure such as a dendritic structure.

[0017] (Meth)acrylic silicone resins include those that are liquid, semi-solid or solid at 25°C under 1 atm, with those that are solid at 25°C under 1 atm being preferred. Also, those mixed with a dispersion medium such as decamethylcyclopentasiloxane can be used.

[0018] (Meth)acrylic silicone resins include (meth)acrylic polymers having a dendrimer-type siloxane structure in the side chain, (meth)acrylic-silicone graft copolymers, and the like. Among these, only one kind may be used or two or more kinds may be used in combination. Among these, from the viewpoint of abrasion resistance, (meth)acrylic polymers having a dendrimer-type siloxane structure in the side chain are preferred.

[0019] ((Meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain) As the (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain, a (meth)acrylic polymer having a structural unit represented by the following formula (1) is preferred.

[0020] [Chemical formula]

[0021] [In formula (1), R 1 represents a hydrogen atom or a methyl group, R 2 represents an alkanediyl group having 1 to 10 carbon atoms, D represents a dendrimer-type siloxane structure. ]

[0022] In formula (1), the number of carbon atoms of the alkanediyl group represented by R 2 is preferably 1 to 3. R 2The alkanediyl group represented by may be linear or branched, and examples thereof include a methane-1,1-diyl group, an ethane-1,1-diyl group, an ethane-1,2-diyl group, a propane-1,1-diyl group, a propane-1,2-diyl group, a propane-1,3-diyl group, a propane-2,2-diyl group, and the like.

[0023] Examples of the dendrimer-type siloxane structure include those represented by the following formula (2).

[0024]

Chemical formula

[0025] 〔In formula (2), R 3 represents an alkyl group or an aryl group having 1 to 10 carbon atoms, X 1 represents a group where i = 1 among the silylalkyl groups represented by the following formula (3), * represents a bond.〕

[0026] In formula (2), the alkyl group represented by R 3 includes linear or branched alkyl groups having 1 to 10 (preferably 1 to 5) carbon atoms such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a pentyl group; cycloalkyl groups having 3 to 10 (preferably 4 to 8) carbon atoms such as a cyclopentyl group, a cyclohexyl group. Examples of the aryl group include a phenyl group and a naphthyl group. Among such R 3 , a methyl group and a phenyl group are preferred, and a methyl group is particularly preferred. It should be noted that a plurality of R 3 existing in formula (2) may be the same or different. Similarly, a plurality of X 1 may also be the same or different.

[0027]

Chemical formula

[0028] 〔In formula (3), R 3 is synonymous with the above, R 4 represents an alkanediyl group having 2 to 10 carbon atoms, R 5 represents an alkyl group having 1 to 10 carbon atoms, X i+1 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group or a silylalkyl group similar to X i a i represents an integer of 0 to 3, * represents a bond. ]

[0029] R 4 The number of carbon atoms of the alkanediyl group represented by is preferably 2 to 6. R 4 The alkanediyl group represented by may be linear or branched, and examples thereof include ethane-1,1-diyl group, ethane-1,2-diyl group, propane-1,1-diyl group, propane-1,2-diyl group, propane-1,3-diyl group, propane-2,2-diyl group, butane-1,4-diyl group, pentane-1,5-diyl group, hexane-1,6-diyl group, hexane-1,5-diyl group, hexane-2,5-diyl group and the like. Among these, the ethane-1,2-diyl group is particularly preferred.

[0030] R 5 The alkyl group represented by is the same as that represented by R 3 as long as it is the same, but a methyl group, an ethyl group, a propyl group, an isopropyl group and a butyl group are preferred. X i+1 The alkyl group and aryl group represented by are preferably the same as those represented by R 3 Incidentally, when a i is 2 or 3, two or three R 5 may be the same or different. Also, when a i is 0 or 1, two or three X i+1may be the same or different.

[0031] Also, i is an integer from 1 to 10 and represents the number of layers of the above silylalkyl group (the number of repetitions of the silylalkyl group). Moreover, as the dendrimer-type siloxane structure, those having 1 layer of silylalkyl group are preferable. Such a dendrimer-type siloxane structure can be represented by the following formula (4).

[0032] [Chemical formula]

[0033] [In formula (4), R 6 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an aryl group, and the alkyl group and aryl group represented by R 6 are preferably the same as those represented by R 3 . a 1 is synonymous with a i in the dendrimer-type siloxane structure, but the average total number of a 1 in the dendrimer-type siloxane structure is preferably 0 to 7. Also, the other symbols have the same meanings as described above. ]

[0034] As the (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain, those having a structural unit derived from a (meth)acrylate monomer other than the above structural unit in addition to the structural unit represented by the above formula (1) are preferable. Examples of such (meth)acrylate monomers include alkyl (meth)acrylates and glycidyl (meth)acrylates. Only one of these may be used, or two or more thereof may be used in combination. In addition, the alkyl group contained in the alkyl (meth)acrylate may be linear, branched, or cyclic. As the alkyl (meth)acrylate, those having 1 to 30 carbon atoms in the alkyl group are preferable, those having 1 to 22 carbon atoms in the alkyl group are more preferable, those having 1 to 8 carbon atoms in the alkyl group are still more preferable, those having 1 to 3 carbon atoms in the alkyl group are still more preferable, and those having 1 carbon atom in the alkyl group are particularly preferable. Examples of the alkyl (meth)acrylate include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, n-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, octyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, and behenyl (meth)acrylate. Among these, methyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, stearyl (meth)acrylate, and behenyl (meth)acrylate are preferable, and methyl (meth)acrylate is particularly preferable.

[0035] As the total content of the structural unit represented by the formula (1) and the structural unit derived from the alkyl (meth)acrylate, 90 to 100 mol% is preferable, 95 to 100 mol% is more preferable, and 99 to 100 mol% is particularly preferable with respect to all the structural units of the main chain.

[0036] For the (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain, a commercially available product or a product obtained by synthesis according to the methods described in JP-A-11-1530, JP-A-2000-63225, etc. may be used. For example, as the (acrylates / methacrylic acid polytrimethylsiloxane) copolymer, FA 4001 CM (30 mass% decamethylcyclopentasiloxane solution), FA 4002 ID (40 mass% isododecane solution), FA 4003 DM (40 mass% dimethicone solution) (all manufactured by Toray Dow Corning Co., Ltd.) are commercially available.

[0037] ((Meth)acrylic-silicone graft copolymer) As the (meth)acrylic-silicone graft copolymer, a radical polymer of an organopolysiloxane compound having a radically polymerizable group at one end of the molecular chain and a (meth)acrylate monomer other than the said compound is preferable. For example, those described in JP-A-2-25411, JP-A-2-132141, JP-A-3-162442, JP-A-2003-104825, etc. can be used.

[0038] As the (meth)acrylic-silicone graft copolymer, those having a structural unit represented by the following formula (5) are preferable.

[0039] [Chemical formula]

[0040] [In formula (5), R 11 represents a hydrogen atom or a methyl group, R 12 represents an alkanediyl group having 1 to 10 carbon atoms, k represents an integer of 3 to 300.]

[0041] In formula (5), the number of carbon atoms of the alkanediyl group represented by R 12 is preferably 1 to 3. The alkanediyl group represented by R 12 may be linear or branched, and examples thereof include methane-1,1-diyl group, ethane-1,1-diyl group, ethane-1,2-diyl group, propane-1,1-diyl group, propane-1,2-diyl group, propane-1,3-diyl group, propane-2,2-diyl group, etc. Also, as k, an integer of 5 to 100 is preferable.

[0042] As the (meth)acrylic-silicone graft copolymer, in addition to the structural unit represented by the above formula (5), those having a structural unit derived from a (meth)acrylate monomer other than the said structural unit are preferred. Examples of such (meth)acrylate monomers include, in addition to alkyl (meth)acrylates, glycidyl (meth)acrylate and the like. Only one of these may be used, or two or more thereof may be used in combination. As the alkyl (meth)acrylate, the same ones as those which may be used in a (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain are preferred.

[0043] The molar ratio of the structural unit represented by the formula (5) and the structural unit derived from the alkyl (meth)acrylate in the (meth)acrylic-silicone graft copolymer is preferably 1:10 to 10:1. Further, the total content of the structural unit represented by the formula (5) and the structural unit derived from the alkyl (meth)acrylate is preferably 90 to 100 mol%, more preferably 95 to 100 mol%, and particularly preferably 99 to 100 mol% with respect to all the structural units of the main chain.

[0044] Specific examples of the (meth)acrylic-silicone graft copolymer include (acrylates / dimethyl silicone) copolymer, (acrylates / ethylhexyl acrylate / dimethyl methacrylate) copolymer, (acrylates / stearyl acrylate / dimethyl methacrylate) copolymer, (acrylates / behenyl acrylate / dimethyl methacrylate) copolymer (the above are cosmetic display names), and the like.

[0045] (Meth)acrylic-silicone graft copolymers may be those obtained by synthesis according to conventional methods or commercially available products. Examples of commercially available (acrylates / dimethyl silicone) copolymers include KP-541 (mixture with isopropanol, content: 60% by mass), KP-545 (mixture with decamethylcyclopentasiloxane, content: 30% by mass), KP-549 (mixture with methyltrimethicone, content: 40% by mass), and KP-550 (mixture with isododecane, content: 40% by mass) (all manufactured by Shin-Etsu Chemical Co., Ltd.). Examples of commercially available (acrylates / ethylhexyl acrylate / dimethyl methacrylate) copolymers include KP-575 (mixture with decamethylcyclopentasiloxane, content: 30% by mass), examples of commercially available (acrylates / stearyl acrylate / dimethyl methacrylate) copolymers include KP-561P, and examples of commercially available (acrylates / behenyl acrylate / dimethyl methacrylate) copolymers include KP-562P (all manufactured by Shin-Etsu Chemical Co., Ltd.).

[0046] (Meth)acrylic silicone resins may be used alone or in combination of two or more. From the viewpoint of abrasion resistance and the like, the content of the (meth)acrylic silicone resin in the sunscreen cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and particularly preferably 0.2% by mass or more. From the viewpoints of abrasion resistance, skin feel, etc., in the sunscreen cosmetic of the present invention, it is preferably 10% by mass or less, more preferably 6% by mass or less, still more preferably 3% by mass or less, and particularly preferably 1.5% by mass or less. As a specific range, in the sunscreen cosmetic of the present invention, 0.01% by mass or more and 10% by mass or less is preferable, 0.05% by mass or more and 6% by mass or less is more preferable, 0.1% by mass or more and 3% by mass or less is still more preferable, 0.1% by mass or more and 1.5% by mass or less is even more preferable, and 0.2% by mass or more and 1.5% by mass or less is particularly preferable.

[0047] Also, the mass ratio of component (A) to component (B) [(A) / (B)] is preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.1 or more, even more preferably 0.4 or more, particularly preferably 0.55 or more, and is preferably 10 or less, more preferably 5 or less, still more preferably 2.5 or less, particularly preferably 1.5 or less. As a specific range, 0.01 or more and 10 or less is preferable, 0.05 or more and 5 or less is more preferable, 0.1 or more and 2.5 or less is still more preferable, 0.4 or more and 1.5 or less is even more preferable, and 0.55 or more and 1.5 or less is particularly preferable.

[0048] <Component (C)> The sunscreen cosmetic of the present invention contains (C) an ultraviolet ray screening agent. Examples of the ultraviolet ray screening agent include one or more selected from hydrophobized ultraviolet ray scattering agents and ultraviolet ray absorbers.

[0049] (Hydrophobized ultraviolet ray scattering agent) As the hydrophobized ultraviolet ray scattering agent, hydrophobized fine particle metal oxides are preferable. As the fine particle metal oxides used for the hydrophobized fine particle metal oxides, from the viewpoint of easy availability, one or more fine particle metal oxides selected from zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide are preferable. Among these fine particle metal oxides, from the viewpoints of ultraviolet ray protection effect, abrasion resistance, etc., one or more fine particle metal oxides selected from zinc oxide, titanium oxide, and cerium oxide are preferable, one or more fine particle metal oxides selected from zinc oxide and titanium oxide are more preferable, and fine particle zinc oxide is particularly preferable. In addition, these fine particle metal oxides can contain trace elements of +2 valence or more, and metals such as iron, zirconium, calcium, manganese, magnesium, and yttrium can be contained in the fine particle metal oxides alone or in combination of two or more.

[0050] The shape of the above-mentioned "fine particle metal oxide" is not particularly limited, and examples include spherical, plate-like, rod-like, spindle-like, needle-like, irregular shapes, etc. In addition, the average particle diameter of the above-mentioned "fine particle metal oxide" is preferably 0.01 μm or more, more preferably 0.012 μm or more, particularly preferably 0.015 μm or more, and is preferably 1 μm or less, more preferably 0.8 μm or less, particularly preferably 0.5 μm or less. As a specific range of the average particle diameter, a range of 0.01 μm or more and 1 μm or less is preferable, a range of 0.012 μm or more and 0.8 μm or less is more preferable, and a range of 0.015 μm or more and 0.5 μm or less is particularly preferable. Note that the average particle diameter of the fine particle metal oxide means the average particle diameter measured by the laser diffraction / scattering method.

[0051] Examples of the fine particle zinc oxide include FINEX-25, FINEX-30, FINEX-50, FINEX-75 (manufactured by Sakai Chemical Industry Co., Ltd.), MZ500 series, MZ700 series (manufactured by Teika Co., Ltd.), ZnO-350 (manufactured by Sumitomo Osaka Cement Co., Ltd.), etc., which are commercially available. Examples of the fine particle titanium oxide include TTO-55 series, TTO-51 series (manufactured by Ishihara Sangyo Co., Ltd.), JR series, JA series (manufactured by Teika Co., Ltd.), etc., which are commercially available. As the fine particle cerium oxide, for example, high-purity cerium sold by Nicky Co., Ltd. or Seimi Chemical Co., Ltd. may be used.

[0052] The hydrophobization treatment of the above-mentioned fine particle metal oxide may be carried out using a known surface treatment agent to be hydrophobized. For example, fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylation lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, silazane compound treatment, etc. may be mentioned. Among these treatments, from the viewpoints of dispersion stability, etc., treatment with silicone or silicone resin, treatment with silane compound or silazane compound, and metal soap treatment such as aluminum isostearate are preferable.

[0053] Examples of the silicone or silicone resin include methylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, methylhydrogenpolysiloxane-dimethylpolysiloxane copolymer, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, octamethyltrisiloxane, tetradecamethylhexasiloxane, dimethylsiloxane-methyl(polyoxyethylene)siloxane-methyl(polyoxypropylene)siloxane copolymer, dimethylsiloxane-methyl(polyoxyethylene)siloxane copolymer, dimethylsiloxane-methyl(polyoxypropylene)siloxane copolymer, dimethylsiloxane-methylcetoxysiloxane copolymer, dimethylsiloxane-methylstearoxysiloxane copolymer, etc. As the methylhydrogenpolysiloxane-dimethylpolysiloxane copolymer, those represented by the following formula (6) are preferred.

[0054] [Chemical formula]

[0055] [In formula (6), m and n are integers of 0 or more, and 1 ≦ m + n ≦ 60.]

[0056] As the above silane compound or silazane compound, a silane compound or silazane compound having an alkyl group with 1 to 20 carbon atoms or a fluoroalkyl group with 1 to 20 carbon atoms and having reactivity with an inorganic oxide is preferred, and a silane compound represented by the following formula (7) or a silazane compound represented by the following formula (8) is more preferred. Note that one of these may be used alone or two or more thereof may be used in combination.

[0057] R 21 (R 22 ) p Si(Z) 3-p ···(7)

[0058] [In formula (7), R 21represents a linear or branched alkyl group having 1 to 20 carbon atoms, or a linear or branched fluoroalkyl group having 1 to 20 carbon atoms, R 22 represents a linear or branched alkyl group having 1 to 6 carbon atoms, Z represents a halogen atom or an alkoxy group, p represents 0 or 1. ]]

[0059] R 23 R 24 R 25 SiNHSiR 26 R 27 R 28 ···(8)

[0060] 〔In formula (8), R 23 ~R 28 each independently represents a linear or branched alkyl group having 1 to 20 carbon atoms, or a linear or branched fluoroalkyl group having 1 to 20 carbon atoms. ]]

[0061] As the silane compound, from the viewpoints of dispersion stability and the like, alkylalkoxysilane or fluoroalkylalkoxysilane is preferable, and alkyltrialkoxysilane or fluoroalkyltrialkoxysilane is more preferable. Specifically, hexyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, decyltrimethoxysilane, octadecyltrimethoxysilane, trifluoropropyltrimethoxysilane, heptadecafluorodecyltrimethoxysilane, etc. can be mentioned. In addition, one of these may be used alone or two or more thereof may be used in combination. Among these, octyltrimethoxysilane and octyltriethoxysilane are more preferable. Further, as the silazane compound, specifically, hexamethyldisilazane etc. can be mentioned.

[0062] The coating amount of the surface treatment agent used for the hydrophobization treatment is preferably 1 part by mass or more, more preferably 3 parts by mass or more, based on 100 parts by mass of the fine particle metal oxide, from the viewpoints of emulsion stability, dispersion stability, etc. Also, from the viewpoints of emulsion stability, dispersion stability, etc., it is preferably 15 parts by mass or less, more preferably 10 parts by mass or less, based on 100 parts by mass of the fine particle metal oxide.

[0063] The method of the hydrophobization treatment can be appropriately selected from conventionally known methods. For example, as the treatment with the above silicone or silicone resin, at least one or more silicone compounds (excluding silane compounds) composed of organopolysiloxanes and silicone resins, as described in Japanese Patent No. 3187440, are used to coat the fine particle metal oxide in a non-gaseous phase state, and then fired at a temperature of 600 to 950 °C in an oxygen-containing atmosphere, whereby a method of coating the surface of the fine particle metal oxide with silicon oxide can be mentioned. Also, as a treatment method using a silane compound or a silazane compound, a chemical bonding method can be mentioned. More specifically, a silane compound or a silazane compound and a fine particle metal oxide are mixed in an organic solvent such as n-hexane, cyclohexane, or lower alcohol, and if necessary, finely pulverized, and then the organic solvent is removed by heating (for example, 80 to 250 °C) or reduced pressure. Also, a method of surface-treating in water with a silane compound after coating with a polysiloxane compound, as described in Japanese Patent Application Laid-Open No. 2007-326902, can be mentioned.

[0064] Note that the hydrophobization treatment ultraviolet scattering agent may be used alone or in combination of two or more.

[0065] (Ultraviolet absorber) As the ultraviolet absorber, an organic ultraviolet absorber is preferable from the viewpoints of water resistance, abrasion resistance, solubility, etc. Examples of organic ultraviolet absorbers include benzoic acid-based ultraviolet absorbers, anthranilic acid-based ultraviolet absorbers, salicylic acid-based ultraviolet absorbers, cinnamic acid-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, triazine-based ultraviolet absorbers, silicone-based ultraviolet absorbers, and the like. Among these, from the viewpoints of ultraviolet protection effect, solubility, etc., one or more selected from cinnamic acid-based ultraviolet absorbers and triazine-based ultraviolet absorbers are preferred. Further, as the organic ultraviolet absorber, an oil-soluble organic ultraviolet absorber is preferred.

[0066] Examples of benzoic acid-based ultraviolet absorbers include para-aminobenzoic acid (PABA), glyceryl PABA, ethyldihydroxypropyl PABA, N-ethoxylate PABA ethyl ester, N-dimethyl PABA ethyl ester, N-dimethyl PABA butyl ester, N-dimethyl PABA amyl ester, octyldimethyl PABA, diethylaminohydroxybenzoyl benzoic acid hexyl, and the like. Examples of anthranilic acid-based ultraviolet absorbers include homomenthyl-N-acetylanthranilate, and the like. Examples of salicylic acid-based ultraviolet absorbers include amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanolphenyl salicylate, and the like.

[0067] Examples of cinnamic acid-based ultraviolet absorbers include octyl cinnamate, ethyl-4-isopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate, isoamyl-p-methoxy cinnamate, 2-ethylhexyl-p-methoxy cinnamate, 2-ethoxyethyl-p-methoxy cinnamate, cyclohexyl-p-methoxy cinnamate, ethyl-α-cyano-β-phenyl cinnamate, 2-ethylhexyl-α-cyano-β-phenyl cinnamate, glyceryl mono-2-ethylhexanoyl diparamethoxy cinnamate, and the like. Examples of benzophenone-based ultraviolet absorbers include 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenylbenzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, and the like. Examples of triazine-based ultraviolet absorbers include 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, dioctylbutamidotriazine, 2,4-bis -[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, and the like. Examples of silicone-based ultraviolet absorbers include dimethicodiethylbenzalmalonate and the like. Examples of other organic ultraviolet absorbers include 3-(4'-methylbenzylidene)-dl-camphor, 3-benzylidene-dl-camphor, ethyl urocanate, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5-t-octylphenyl)benzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, benzene-bis-1,3-diketone derivatives described in JP-A-2-212579, benzoylpina colone derivatives described in JP-A-3-220153, and the like.

[0068] In addition, organic UV absorbers can be roughly classified into solid organic UV absorbers at 25°C under 1 atm and liquid organic UV absorbers at 25°C under 1 atm. For example, hexyl diethylaminohydroxybenzoyl benzoate, 2,4-bis -[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, etc. mentioned above are solid organic UV absorbers at 25°C under 1 atm. Also, isopropyl -p-methoxycinnamate, 2-ethylhexyl -p-methoxycinnamate, 2-ethoxyethyl -p-methoxycinnamate, etc. mentioned above are liquid organic UV absorbers at 25°C under 1 atm.

[0069] Note that the UV absorber may be used alone or in combination of two or more.

[0070] The content of the UV shielding agent is 2.5 to 45% by mass in the sunscreen cosmetic of the present invention. By setting the content of the UV shielding agent within such a range, stickiness after application can be suppressed, and a sufficient UV protection effect can be exhibited. From the viewpoints of UV protection effect, abrasion resistance, etc., the content of the UV shielding agent is preferably 5% by mass or more, more preferably 7% by mass or more, particularly preferably 10% by mass or more in the sunscreen cosmetic of the present invention. Also, from the viewpoints of non-stickiness, storage stability, etc., the content of the UV shielding agent is preferably 40% by mass or less, more preferably 35% by mass or less, particularly preferably 30% by mass or less in the sunscreen cosmetic of the present invention. As a specific range, in the sunscreen cosmetic of the present invention, 5% by mass or more and 40% by mass or less is preferable, 7% by mass or more and 35% by mass or less is more preferable, and 10% by mass or more and 30% by mass or less is particularly preferable.

[0071] When a hydrophobized ultraviolet scattering agent is used as the ultraviolet ray blocking agent, the content of the hydrophobized ultraviolet scattering agent is preferably 0.5% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and particularly preferably 2.5% by mass or more and 15% by mass or less in the sunscreen cosmetic of the present invention. When an ultraviolet absorber is used as the ultraviolet ray blocking agent, the content of the ultraviolet absorber is preferably 0.5% by mass or more and 25% by mass or less, more preferably 1% by mass or more and 20% by mass or less, and particularly preferably 2.5% by mass or more and 15% by mass or less in the sunscreen cosmetic of the present invention.

[0072] In addition, the content mass ratio [(A) / (C)] of component (A) to component (C) is preferably 0.0005 or more, more preferably 0.001 or more, from the viewpoint of skin soothing and the like, and preferably 1 or less, more preferably 0.7 or less, still more preferably 0.5 or less, particularly preferably 0.3 or less, from the viewpoint of ease of production and the like. As a specific range, 0.0005 or more and 1 or less is preferable, 0.0005 or more and 0.7 or less is more preferable, 0.001 or more and 0.5 or less is still more preferable, and 0.001 or more and 0.3 or less is particularly preferable.

[0073] In addition, the content mass ratio [(B) / (C)] of component (B) to component (C) is preferably 0.0005 or more, more preferably 0.001 or more, particularly preferably 0.004 or more, from the viewpoint of abrasion resistance and the like, and preferably 1.5 or less, more preferably 0.5 or less, still more preferably 0.1 or less, particularly preferably 0.05 or less, from the viewpoint of usability (goodness of skin soothing) and the like. As a specific range, 0.0005 or more and 1.5 or less is preferable, 0.001 or more and 0.5 or less is more preferable, 0.001 or more and 0.1 or less is still more preferable, and 0.004 or more and 0.05 or less is particularly preferable.

[0074] <Component (D)> As the sunscreen cosmetic of the present invention, from the viewpoints of abrasion resistance, skin soothing, etc., in addition to components (A) to (C), those containing (D) a silicone-based film-forming agent are preferable. In this specification, the silicone-based film-forming agent of component (D) refers to an agent having a silicone segment with a chain structure or a branched structure as the main chain and having a film-forming ability. Examples of the silicone segment with a branched structure include a silsesquioxane segment.

[0075] Examples of the silicone-based film-forming agent include poly(N-acylalkyleneimine) modified silicone (for example, oxazoline modified silicone), polyalkylsilsesquioxane, trimethylsiloxysilicic acid, (trimethylsiloxysilicic acid / dimethiconol) copolymer, and the like. Among these, only one kind may be used, or two or more kinds may be used in combination. Among these, from the viewpoints of abrasion resistance, skin feel, etc., poly(N-acylalkyleneimine) modified silicone and polyalkylsilsesquioxane are preferable, and poly(N-acylalkyleneimine) modified silicone is more preferable.

[0076] (Poly(N-acylalkyleneimine) modified silicone) The poly(N-acylalkyleneimine) modified silicone is an organopolysiloxane in which a poly(N-acylalkyleneimine) segment composed of a repeating unit represented by the following general formula (9) is bonded to at least two silicon atoms of the organopolysiloxane segment constituting the main chain via an alkylene group containing a hetero atom. The number average molecular weight of the poly(N-acylalkyleneimine) segment is 500 to 4000, and the weight average molecular weight of the organopolysiloxane segment constituting the main chain is 10000 to 200000. The organopolysiloxane (hereinafter, this organopolysiloxane is also referred to as organopolysiloxane (OX)) is preferable.

[0077] [Chemical formula]

[0078] 〔In formula (9), R 41represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group or an aryl group, and t represents 2 or 3.

[0079] Here, the organopolysiloxane (OX) will be described in detail. The poly(N-acylalkyleneimine) segment is bonded to at least two of any silicon atoms constituting the organopolysiloxane segment via an alkylene group containing a hetero atom, preferably bonded to one or more silicon atoms excluding both ends of the organopolysiloxane segment via the above alkylene group, and more preferably bonded to two or more silicon atoms excluding both ends via the above alkylene group.

[0080] The alkylene group containing a hetero atom functions as a linking group of the poly(N-acylalkyleneimine) segment. Examples of the alkylene group containing a hetero atom include an alkylene group having 2 to 20 carbon atoms containing 1 to 3 nitrogen atoms, oxygen atoms or sulfur atoms. Among these, a group represented by any of the following formulas (A1) to (A10) is preferable, a group represented by any of the formulas (A1) to (A4) is more preferable, and a group represented by the formula (A1) or (A2) is particularly preferable. In the formula, An - represents a counter ion of a quaternary ammonium salt. For example, halide ions (e.g., chloride ions, iodide ions), sulfate ions, phosphate ions, acetate ions, lactate ions, p-toluenesulfonate ions, perchlorate ions, monoalkyl nitrate ions (e.g., methyl sulfate ions, ethyl sulfate ions), etc. can be mentioned.

[0081]

Chemical formula

[0082] In the N-acylalkyleneimine unit constituting the poly(N-acylalkyleneimine) segment, in the general formula (9), R 41The number of carbon atoms in the alkyl group represented by is 1 to 22, preferably 1 to 14, more preferably 1 to 6, and particularly preferably 1 to 3. The above alkyl group may be linear or branched. For example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a pentyl group, a hexyl group, etc. can be mentioned. R 41 As the aralkyl group represented by, an aralkyl group having 7 to 15 carbon atoms is preferable. For example, a benzyl group, a phenethyl group, a trityl group, a naphthylmethyl group, an anthracenylmethyl group, etc. can be mentioned. R 41 As the aryl group represented by, an aryl group having 6 to 14 carbon atoms is preferable. For example, a phenyl group, a tolyl group, a xylyl group, a naphthyl group, a biphenyl group, an anthracenyl group, a phenanthryl group, etc. can be mentioned. Among these, as R 41 a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms is preferable, and a linear or branched alkyl group having 1 to 3 carbon atoms is more preferable. In formula (9), t represents 2 or 3, with 2 being preferable.

[0083] In the organopolysiloxane (OX), the weight average molecular weight of the organopolysiloxane segment (hereinafter also referred to as "MWg") between adjacent poly(N-acylalkyleneimine) segments is preferably 1000 to 40000, more preferably 1500 to 30000, and particularly preferably 1750 to 5000 from the viewpoint of antifriction properties, etc.

[0084] In this specification, the "organopolysiloxane segment between adjacent poly(N-acylalkyleneimine) segments" is, as shown in the following formula (10), from the bonding point (bonding point A) of the organopolysiloxane segment of the poly(N-acylalkyleneimine) segment to the bonding point (bonding point B) of the adjacent poly(N-acylalkyleneimine) segment, the portion surrounded by a broken line between the two points, and one R 42 SiO unit, one R 43 [[ID=42 ) It refers to a segment composed of 2SiO units. Further, the "poly(N-acylalkyleneimine) segment" means the -Z 43 bonded to the above R 11 -R 44 .

[0085] [Chemical formula]

[0086] [In formula (10), R 42 each independently represents an alkyl group having 1 to 22 carbon atoms or a phenyl group, R 43 represents an alkylene group containing a hetero atom, -Z 11 -R 44 represents a poly(N-acylalkyleneimine) segment, R 44 represents a residue of a polymerization initiator or a hydrogen atom, and y represents a positive number. Note that a plurality of R 42 , R 43 , R 44 may be the same or different.]

[0087] MWg is the molecular weight of the portion surrounded by the broken line in the above formula (10), but can be understood as the mass (g / mol) of the organopolysiloxane segment per mole of the poly(N-acylalkyleneimine) segment. Note that when the functional group of the modified organopolysiloxane as the raw material compound is 100% substituted with poly(N-acylalkyleneimine), it coincides with the functional group equivalent (g / mol) of the modified organopolysiloxane.

[0088] Further, the molecular weight of the poly(N-acylalkyleneimine) segment can be calculated from the molecular weight and degree of polymerization of the N-acylalkyleneimine unit, or measured by gel permeation chromatography (GPC). In this specification, it refers to the number average molecular weight in terms of polystyrene measured by GPC performed under the following measurement conditions (hereinafter, also referred to as MNox). MNox is preferably 800 to 3500, more preferably 1000 to 3000, from the viewpoint of abrasion resistance and the like.

[0089] MWg can be determined by the following formula (I) using the content rate (% by mass) of the organopolysiloxane segment constituting the main chain (hereinafter also referred to as Csi).

[0090] MWg = Csi×MNox / (100-Csi) (I)

[0091] The weight average molecular weight of the organopolysiloxane segment constituting the main chain (hereinafter also referred to as MWsi) is preferably 15,000 to 160,000, more preferably 20,000 to 150,000, and particularly preferably 25,000 to 100,000 from the viewpoints of abrasion resistance and the like. Since the organopolysiloxane segment constituting the main chain has a common skeleton with the modified organopolysiloxane of the raw material compound, MWsi is substantially the same as the weight average molecular weight of the modified organopolysiloxane of the raw material compound. The weight average molecular weight of the modified organopolysiloxane of the raw material compound is the weight average molecular weight in terms of polystyrene measured by GPC performed under the following measurement conditions.

[0092] (Measurement conditions for the weight average molecular weight of the modified organopolysiloxane) Column: Super HZ4000 + Super HZ2000 (manufactured by Tosoh Corporation) Eluent: 1 mM triethylamine / THF Flow rate: 0.35 mL / min Column temperature: 40°C Detector: UV Sample: 50 μL

[0093] The weight average molecular weight of the organopolysiloxane (OX) (hereinafter also referred to as MWt) is preferably 12,000 to 200,000, more preferably 25,000 to 160,000, and particularly preferably 35,000 to 150,000 from the viewpoints of abrasion resistance and the like. MWt shall refer to the value in terms of polystyrene measured by GPC performed under the measurement conditions described below.

[0094] (Measurement Conditions for MNox and MWt) Column: Two K-804L (manufactured by Tosoh Corporation) connected in series were used Eluent: 1 mM dimethyldodecylamine / chloroform Flow rate: 1.0 mL / min Column temperature: 40 °C Detector: RI Sample: 50 μL

[0095] When the poly(N-acylalkyleneimine) segment is a poly(N-propionylethyleneimine) segment, for the calculation of the mass ratio (a / b), 1 1H-NMR measurement can be carried out, for example, under the following conditions. ( 1 1H-NMR Measurement Conditions) For a solution prepared by dissolving 0.5 g of the polymer sample in 2 g of the measurement solvent (deuterated chloroform), 1 it is measured by 1H-NMR (400 MHz, manufactured by Varian). Then, the ratio of silicone to poly(N-propionylethyleneimine) is calculated from each integral value. PULSE SEQUENCE ·Relax.delay: 30 seconds ·Pulse: 45 degrees ·Number of integrations: 8 times Confirmation peak around 0 ppm: Methyl group of polydimethylsiloxane, around 3.4 ppm: Methylene portion of ethyleneimine.

[0096] The organopolysiloxane (OX) may be obtained by synthesis according to the methods described in JP-A-2008-143820, JP-A-2009-24114, JP-A-2015-67603, etc. For example, it can be produced by reacting an organopolysiloxane modified with a functional group that induces the above-mentioned "alkylene group containing a hetero atom" with a terminal-reactive poly(N-acylalkyleneimine) obtained by ring-opening polymerization of a cyclic imino ether corresponding to the repeating unit represented by the general formula (9).

[0097] (Polyalkylsilsesquioxane) As the polyalkylsilsesquioxane, for example, those described in JP-A-4-312511 can be used. Specifically, R 51 SiO 1.5 units: 50 to 99 mol% and R 52 3SiO 0.5 units: 1 to 50 mol% of a silicone resin (wherein R 51 and R 52 each independently represent a substituted or unsubstituted monovalent hydrocarbon group), etc. can be mentioned. Such a polyalkylsilsesquioxane is prepared by reacting 100 parts by mass of a silanol group-containing organopolysilsesquioxane containing a repetition of R 51 SiO 1.5 units (wherein R 51 has the same meaning as described above) with 5 to 100 parts by mass of a silicone compound represented by (R 52 3Si) q R 53 (wherein R 52 has the same meaning as described above, q represents 1 or 2, and when q is 1, R 53 represents a hydrogen atom, a hydroxyl group or a hydrolyzable group (the hydrolyzable group is preferably an alkoxy group having 1 to 4 carbon atoms such as a methoxy group or an ethoxy group), and when q is 2, it represents -O-, -N(R 54 )- or -S-. Here, R 54 represents a hydrogen atom, a substituted or unsubstituted monovalent hydrocarbon group or R 52 3Si-). R 51 、R<� 52 and R 54 The carbon number of the monovalent hydrocarbon group represented by is preferably 1 to 4. As the monovalent hydrocarbon group, a linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group or an isobutyl group is preferable. In addition, examples of the group that can substitute for the monovalent hydrocarbon group include halogen atoms such as a chlorine atom and a bromine atom.

[0098] It should be noted that there is a small error in the original text where "R <� 52 " has an incorrect symbol "<�". It is assumed that this is a typo and should be a normal angle bracket "<". The translation is made based on this assumption.As the polyalkylsilsesquioxane, those that are semi-solid or solid at 25°C under 1 atm are preferred. Also, those mixed with a dispersion medium such as decamethylcyclopentasiloxane can be used.

[0099] Specific examples of the polyalkylsilsesquioxane include polymethylsilsesquioxane, polypropylsilsesquioxane, etc. The polyalkylsilsesquioxane may be used alone or in combination of two or more. Among these, polypropylsilsesquioxane is preferred.

[0100] The polyalkylsilsesquioxane may be a commercially available product or one obtained by synthesis according to a conventional method. Commercially available products of polyalkylsilsesquioxane include 670 Fluid (a mixture with decamethylcyclopentasiloxane, content: 50% by mass), 680 ID Fluid (a mixture with isododecane, content: 75% by mass) (both manufactured by Toray Dow Corning), SilForm Flexible resin, SilForm Flexible fluid (a mixture with decamethylcyclopentasiloxane, content: 50% by mass) (manufactured by Momentive Performance Materials), etc.

[0101] From the viewpoints of abrasion resistance, skin feel, etc., the content of the silicone-based film-forming agent in the sunscreen cosmetic of the present invention is preferably 0.0001% by mass or more, more preferably 0.0005% by mass or more, still more preferably 0.001% by mass or more, and particularly preferably 0.005% by mass or more. Also, from the viewpoints of abrasion resistance, skin feel, ease of production, etc., in the sunscreen cosmetic of the present invention, it is preferably 5% by mass or less, more preferably 1% by mass or less, still more preferably 0.5% by mass or less, and particularly preferably 0.2% by mass or less. As a specific range, in the sunscreen cosmetic of the present invention, 0.0001% by mass or more and 5% by mass or less is preferred, 0.0005% by mass or more and 1% by mass or less is more preferred, 0.001% by mass or more and 0.5% by mass or less is still more preferred, and 0.005% by mass or more and 0.2% by mass or less is particularly preferred.

[0102] Also, the content mass ratio of component (D) to component (C) [(D) / (C)] is preferably 0.00001 or more, more preferably 0.0001 or more, particularly preferably 0.001 or more, from the viewpoints of antifriction property, skin fit, etc., and is preferably 1 or less, more preferably 0.1 or less, particularly preferably 0.05 or less, from the viewpoints of ease of production, usability (good stretch), etc. As a specific range, 0.00001 or more and 1 or less is preferable, 0.0001 or more and 0.1 or less is more preferable, and 0.001 or more and 0.05 or less is particularly preferable.

[0103] In addition to the above components, the sunscreen cosmetic of the present invention contains water; liquid oil agents other than organic ultraviolet absorbers that are liquid at 25°C under 1 atm (hereinafter also referred to as "other liquid oil agents"); surfactants such as anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants; powders other than hydrophobized ultraviolet scattering agents; waxes other than the above; water-soluble polymers such as xanthan gum, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer; monohydric alcohols such as ethanol and propanol; polyhydric alcohols such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin, diglycerin, and polyglycerin; chelating agents; preservatives; fragrances; pH adjusters; moisturizers; cooling agents; conditioning agents, etc. may be included. Note that only one of these may be used alone or two or more may be used in combination.

[0104] As the water content, in the sunscreen cosmetic of the present invention, 5% by mass or more and 90% by mass or less is preferable, 7% by mass or more and 80% by mass or less is more preferable, 10% by mass or more and 70% by mass or less is further preferable, and 20% by mass or more and 70% by mass or less is particularly preferable.

[0105] The other liquid oil agents refer to those other than organic ultraviolet absorbers among the oil agents that are liquid at 25°C under 1 atm, and may be volatile oil agents or non-volatile oil agents. Also, only one kind may be used alone or two or more kinds may be used in combination. Note that the volatile oil agent is an oil agent that shows volatility at 25°C, and the non-volatile oil agent is an oil agent that does not show volatility at 25°C.

[0106] Examples of volatile oils include light isoparaffin, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, methyltrimethicone, decamethyltetrasiloxane, ethyltrisiloxane, volatile methylpolysiloxane, and the like. Examples of commercially available light isoparaffin include Isopar H (manufactured by ExxonMobil Chemical Co., Ltd.), isododecane (manufactured by Bayer AG), isohexadecane (manufactured by Unichema), IP Solvent 1620MU, IP Solvent 2028MU, IP Solvent 2835 (all manufactured by Idemitsu Kosan Co., Ltd.), and the like. Examples of commercially available decamethylcyclopentasiloxane include TFS405 (manufactured by Momentive Performance Materials Japan Co., Ltd.), SH245, DC345 (manufactured by Toray Dow Corning Co., Ltd.), KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. Examples of commercially available methyltrimethicone include Silicone TMF-1.5 (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. Examples of commercially available decamethyltetrasiloxane include KF-96L-1.5CS (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. Examples of commercially available ethyltrisiloxane include SILSOFT ETS (manufactured by Momentive Performance Materials Japan Co., Ltd.), and the like. Examples of commercially available volatile methylpolysiloxane include KF-96L-2CS (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like.

[0107] Examples of non-volatile oils include non-volatile hydrocarbon oils such as light liquid paraffin, liquid paraffin, heavy liquid isoparaffin, and squalane; non-volatile silicone oils such as non-volatile dimethylpolysiloxane and non-volatile methylphenylpolysiloxane; non-volatile fatty acid ester oils such as cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, and stearyl stearate; and alkyl (C12-15) benzoate. Examples of non-volatile fatty acid ester oils also include fatty acid triglycerides such as glyceryl tri(caprylic acid / capric acid) and glyceryl tri(2-ethylhexanoic acid); esters of fatty acids and neopentyl glycol such as neopentyl glycol dicaprate and neopentyl glycol diethylhexanoate; and polyhydric alcohol fatty acid ester oils. Examples of commercially available liquid paraffin include Pearl Rim 4 (manufactured by NOF Corporation). Examples of commercially available non-volatile dimethylpolysiloxane include KF-96A-10CS (manufactured by Shin-Etsu Chemical Co., Ltd.). Examples of commercially available isopropyl palmitate include Exceparl IPP (manufactured by Kao Corporation). Examples of commercially available alkyl (C12-15) benzoate include FINSOLV TN (manufactured by Innospec Active Chemicals). Examples of commercially available neopentyl glycol dicaprate include Estemol N-01 (manufactured by Nisshin Oillio Group, Ltd.).

[0108] The content of other liquid oils is preferably 0.5% by mass or more and 80% by mass or less, more preferably 1% by mass or more and 70% by mass or less, still more preferably 5% by mass or more and 60% by mass or less, and particularly preferably 5% by mass or more and 50% by mass or less in the sunscreen cosmetic of the present invention.

[0109] The dosage forms of the sunscreen cosmetic of the present invention include non-solid forms such as liquid, emulsion, cream, paste, and gel forms, with liquid, emulsion, and cream forms being preferred. In addition, as the sunscreen cosmetic of the present invention, an emulsion cosmetic is preferable. The type of emulsion is not particularly limited, and specific examples include oil-in-water type and water-in-oil type. Even in the case of an oil-in-water type, the sunscreen cosmetic of the present invention has excellent abrasion resistance and can obtain an ultraviolet ray protection effect when the coating film is rubbed.

[0110] In addition, the sunscreen cosmetic of the present invention can be applied to the skin (preferably the skin excluding the scalp, more preferably the face, body, hands and feet, etc.) and used as a sunscreen. The method of use is not particularly limited, but it is preferably applied by hand or an application tool. The sunscreen cosmetic of the present invention can be produced according to a conventional method. The sunscreen cosmetic of the present invention has good skin soothing properties, excellent abrasion resistance, and also excellent ultraviolet ray protection effect when the coating film is rubbed.

[0111] Regarding the above-described embodiments, the present invention further discloses the following sunscreen cosmetics and the like. <1> A sunscreen cosmetic containing the following components (A), (B) and (C). (A) Wax having a melting point of 55°C or higher: 0.05 to 1.5% by mass (B) (Meth)acrylic silicone resin (C) Ultraviolet ray shielding agent: 2.5 to 45% by mass

[0112] <2> The sunscreen cosmetic according to <1>, wherein the melting point of the wax of component (A) is preferably 57.5°C or higher, more preferably 60°C or higher, and preferably 140°C or lower, more preferably 125°C or lower, and particularly preferably 110°C or lower. <3> The sunscreen cosmetic according to <1> or <2>, wherein the wax of component (A) is preferably at least one selected from hydrocarbon waxes and silicone waxes, more preferably a combination of a hydrocarbon wax and a silicone wax, or a silicone wax, and particularly preferably a combination of a hydrocarbon wax and a silicone wax.

[0113] <4> The hydrocarbon wax is preferably at least one selected from mineral hydrocarbon waxes, petroleum hydrocarbon waxes, and synthetic hydrocarbon waxes, more preferably at least one selected from ozokerite, ceresin wax, paraffin wax, microcrystalline wax, Fischer-Tropsch wax, polyethylene wax, and α-olefins having 28 or more carbon atoms, still more preferably at least one selected from ceresin wax, paraffin wax, microcrystalline wax, and synthetic hydrocarbon waxes, and particularly preferably at least one selected from ceresin wax and synthetic hydrocarbon waxes, the sunscreen cosmetic according to any one of <1> to <3>. <5> The silicone wax is preferably an alkyl-modified silicone wax, more preferably at least one selected from alkylmethicone wax, alkyldimethylicone wax, and silsesquioxane resin wax, still more preferably at least one selected from alkylmethicone wax and silsesquioxane resin wax, and particularly preferably alkylmethicone wax, the sunscreen cosmetic according to any one of <1> to <4>.

[0114] <6> The content of component (A) in the sunscreen cosmetic of the present invention is preferably 0.075% by mass or more, more preferably 0.1% by mass or more, and in the sunscreen cosmetic of the present invention, is preferably 1.25% by mass or less, more preferably 1% by mass or less, the sunscreen cosmetic according to any one of <1> to <5>. <7> The content of component (A) in the sunscreen cosmetic of the present invention is preferably 0.075 to 1.25% by mass, more preferably 0.1 to 1% by mass, the sunscreen cosmetic according to any one of <1> to <5>.

[0115] <8> Component (B) is preferably at least one selected from (meth)acrylic polymers having a dendrimer-type siloxane structure in the side chain and (meth)acrylic-silicone graft copolymers, more preferably a (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain, the sunscreen cosmetic according to any one of <1> to <7>. <9> The (meth)acrylic polymer having a dendrimer-type siloxane structure in the side chain is preferably a (meth)acrylic polymer having a structural unit represented by the following formula (1), more preferably the dendrimer-type siloxane structure represented by D in formula (1) is represented by the following formula (2), and particularly preferably an (acrylates / methacrylic acid polytrimethylsiloxy)copolymer, the sunscreen cosmetic according to <8>.

[0116]

Chem.

[0117] 〔In formula (1), R 1 represents a hydrogen atom or a methyl group, R 2 represents an alkanediyl group having 1 to 10 carbon atoms, D represents a dendrimer-type siloxane structure.〕

[0118]

Chem.

[0119] 〔In formula (2), R 3 represents an alkyl group or an aryl group having 1 to 10 carbon atoms, X 1 represents the group where i = 1 among the silylalkyl groups represented by the following formula (3), * represents a bond.〕

[0120]

Chem.

[0121] 〔In formula (3), R 3 has the same meaning as described above, R 4 represents an alkanediyl group having 2 to 10 carbon atoms, R 5 represents an alkyl group having 1 to 10 carbon atoms, X i+1 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group, or a silylalkyl group similar to X i and, a i represents an integer of 0 to 3, * represents a bond.〕

[0122] <10> The (meth)acrylic-silicone-based graft copolymer is preferably at least one selected from (acrylates / dimethyl silicone) copolymer, (acrylates / ethylhexyl acrylate / dimethyl methacrylate) copolymer, (acrylates / stearyl acrylate / dimethyl methacrylate) copolymer, and (acrylates / behenyl acrylate / dimethyl methacrylate) copolymer, and the sunscreen cosmetic according to <8>.

[0123] <11> The content of component (B) in the sunscreen cosmetic of the present invention is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, particularly preferably 0.2% by mass or more, and preferably 10% by mass or less, more preferably 6% by mass or less, still more preferably 3% by mass or less, particularly preferably 1.5% by mass or less in the sunscreen cosmetic of the present invention, and the sunscreen cosmetic according to any one of <1> to <10>. <12> The content of component (B) in the sunscreen cosmetic of the present invention is preferably 0.01% by mass or more and 10% by mass or less, more preferably 0.05% by mass or more and 6% by mass or less, still more preferably 0.1% by mass or more and 3% by mass or less, still more preferably 0.1% by mass or more and 1.5% by mass or less, particularly preferably 0.2% by mass or more and 1.5% by mass or less, and the sunscreen cosmetic according to any one of <1> to <10>.

[0124] <13> The mass ratio of component (A) to component (B) [(A) / (B)] is preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.1 or more, even more preferably 0.4 or more, particularly preferably 0.55 or more, and is preferably 10 or less, more preferably 5 or less, still more preferably 2.5 or less, particularly preferably 1.5 or less. The sunscreen cosmetic according to any one of <1> to <12>. <14> The mass ratio of component (A) to component (B) [(A) / (B)] is preferably 0.01 or more and 10 or less, more preferably 0.05 or more and 5 or less, still more preferably 0.1 or more and 2.5 or less, even more preferably 0.4 or more and 1.5 or less, particularly preferably 0.55 or more and 1.5 or less. The sunscreen cosmetic according to any one of <1> to <12>.

[0125] <15> Component (C) is preferably at least one selected from a hydrophobized ultraviolet scattering agent and an ultraviolet absorber. The sunscreen cosmetic according to any one of <1> to <14>. <16> The hydrophobized ultraviolet scattering agent is preferably a hydrophobized fine particle metal oxide. The sunscreen cosmetic according to <15>. <17> The fine particle metal oxide is preferably one or more fine particle metal oxides selected from zinc oxide, titanium oxide, cerium oxide, iron oxide, and chromium oxide, more preferably one or more fine particle metal oxides selected from zinc oxide, titanium oxide, and cerium oxide, still more preferably one or more fine particle metal oxides selected from zinc oxide and titanium oxide, particularly preferably fine particle zinc oxide. The sunscreen cosmetic according to <16>. <18> The hydrophobic treatment is preferably at least one selected from fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment and silazane compound treatment, more preferably at least one selected from treatment with silicone or silicone resin, treatment with silane compound or silazane compound, and metal soap treatment, the sunscreen cosmetic according to any one of <15> to <17>.

[0126] <19> The ultraviolet absorber is preferably an organic ultraviolet absorber, more preferably at least one selected from benzoic acid-based ultraviolet absorbers, anthranilic acid-based ultraviolet absorbers, salicylic acid-based ultraviolet absorbers, cinnamic acid-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, triazine-based ultraviolet absorbers, and silicone-based ultraviolet absorbers, still more preferably at least one selected from cinnamic acid-based ultraviolet absorbers and triazine-based ultraviolet absorbers, the sunscreen cosmetic according to any one of <15> to <18>.

[0127] <20> The content of component (C) in the sunscreen cosmetic of the present invention is preferably 5% by mass or more, more preferably 7% by mass or more, particularly preferably 10% by mass or more, and in the sunscreen cosmetic of the present invention, preferably 40% by mass or less, more preferably 35% by mass or less, particularly preferably 30% by mass or less, the sunscreen cosmetic according to any one of <1> to <19>. <21> The content of component (C) in the sunscreen cosmetic of the present invention is preferably 5% by mass or more and 40% by mass or less, more preferably 7% by mass or more and 35% by mass or less, particularly preferably 10% by mass or more and 30% by mass or less, the sunscreen cosmetic according to any one of <1> to <19>.

[0128] <22> The mass ratio of component (A) to component (C) [(A) / (C)] is preferably 0.0005 or more, more preferably 0.001 or more, and preferably 1 or less, more preferably 0.7 or less, still more preferably 0.5 or less, and particularly preferably 0.3 or less. The sunscreen cosmetic according to any one of <1> to <21>. <23> The mass ratio of component (B) to component (C) [(B) / (C)] is preferably 0.0005 or more, more preferably 0.001 or more, particularly preferably 0.004 or more, and preferably 1.5 or less, more preferably 0.5 or less, still more preferably 0.1 or less, and particularly preferably 0.05 or less. The sunscreen cosmetic according to any one of <1> to <22>.

[0129] <24> Further, it contains (D) a silicone-based film-forming agent. The sunscreen cosmetic according to any one of <1> to <23>. <25> Component (D) is preferably at least one selected from poly(N-acylalkyleneimine) modified silicone, polyalkylsilsesquioxane, trimethylsiloxysilicic acid, and (trimethylsiloxysilicic acid / dimethiconol) copolymer, more preferably at least one selected from poly(N-acylalkyleneimine) modified silicone and polyalkylsilsesquioxane, and particularly preferably poly(N-acylalkyleneimine) modified silicone. The sunscreen cosmetic according to <24>. <26> The poly(N-acylalkyleneimine) modified silicone is preferably an organopolysiloxane in which a poly(N-acylalkyleneimine) segment composed of a repeating unit represented by the following general formula (9) is bonded to at least two silicon atoms of the organopolysiloxane segment constituting the main chain via an alkylene group containing a hetero atom. The number average molecular weight of the poly(N-acylalkyleneimine) segment is 500 to 4000, and the weight average molecular weight of the organopolysiloxane segment constituting the main chain is 10000 to 200000. The sunscreen cosmetic according to <25>.

[0130] [Chemical formula]

[0131] 〔In formula (9), R 41 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group or an aryl group, and t represents 2 or 3.〕

[0132] <27> The polyalkylsilsesquioxane is preferably an R 51 SiO 1.5 unit: 50 to 99 mol% and an R 52 3SiO 0.5 unit: a silicone resin containing 1 to 50 mol% (wherein R 51 and R 52 each independently represent a substituted or unsubstituted monovalent hydrocarbon group), more preferably one or more selected from polymethylsilsesquioxane and polypropylsilsesquioxane, and particularly preferably polypropylsilsesquioxane, the sunscreen cosmetic according to <25> or <26>.

[0133] <28> The content of component (D) in the sunscreen cosmetic of the present invention is preferably 0.0001% by mass or more, more preferably 0.0005% by mass or more, still more preferably 0.001% by mass or more, particularly preferably 0.005% by mass or more, and in the sunscreen cosmetic of the present invention, preferably 5% by mass or less, more preferably 1% by mass or less, still more preferably 0.5% by mass or less, particularly preferably 0.2% by mass or less, the sunscreen cosmetic according to any one of <24> to <27>. <29> The content of component (D) in the sunscreen cosmetic of the present invention is preferably 0.0001% by mass or more and 5% by mass or less, more preferably 0.0005% by mass or more and 1% by mass or less, still more preferably 0.001% by mass or more and 0.5% by mass or less, particularly preferably 0.005% by mass or more and 0.2% by mass or less, the sunscreen cosmetic according to any one of <24> to <27>.

[0134] <30> The content mass ratio of component (D) to component (C) [(D) / (C)] is preferably 0.00001 or more, more preferably 0.0001 or more, particularly preferably 0.001 or more, and is preferably 1 or less, more preferably 0.1 or less, particularly preferably 0.05 or less. The sunscreen cosmetic according to any one of <24> to <29>.

[0135] <31> Further, it contains one or more selected from water, liquid oil agents other than organic ultraviolet absorbers that are liquid at 25°C under 1 atm, surfactants, powders other than hydrophobized ultraviolet scattering agents, waxes other than those described above, water-soluble polymers, monohydric alcohols, polyhydric alcohols, chelating agents, preservatives, fragrances, pH adjusters, moisturizers, cooling agents, and conditioning agents. The sunscreen cosmetic according to any one of <1> to <30>. <32> The content of water in the sunscreen cosmetic of the present invention is preferably 5% by mass or more and 90% by mass or less, more preferably 7% by mass or more and 80% by mass or less, still more preferably 10% by mass or more and 70% by mass or less, particularly preferably 20% by mass or more and 70% by mass or less. The sunscreen cosmetic according to <31>. <33> The content of liquid oil agents other than organic ultraviolet absorbers that are liquid at 25°C under 1 atm in the sunscreen cosmetic of the present invention is preferably 0.5% by mass or more and 80% by mass or less, more preferably 1% by mass or more and 70% by mass or less, still more preferably 5% by mass or more and 60% by mass or less, particularly preferably 5% by mass or more and 50% by mass or less. The sunscreen cosmetic according to <31> or <32>.

[0136] <34> Preferably it is non-solid, more preferably liquid, emulsion, cream, paste or gel, particularly preferably liquid, emulsion or cream. The sunscreen cosmetic according to any one of <1> to <33>. <35> Preferably it is an emulsion cosmetic, more preferably an oil-in-water type emulsion cosmetic or a water-in-oil type emulsion cosmetic, particularly preferably an oil-in-water type emulsion cosmetic. The sunscreen cosmetic according to any one of <1> to <34>.

Examples

[0137] Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. In this example, various measurements and evaluations were performed by the following methods. Example 20 is a reference example.

[0138] · Evaluation method (1) Usability (goodness of skin soothing) Regarding skin soothing, sensory evaluation was performed by 10 professional panelists. The evaluation criteria are shown below. Note that "good skin soothing feeling" means that there is no slippery feeling during application, and after a certain period of time has passed after application and the skin condition has settled, there is no feeling of stickiness or greasiness on the skin. (Evaluation criteria for usability) AA: Nine or more panelists recognized that there was no slippery feeling during application and no feeling of stickiness or greasiness after application. A: Eight panelists recognized that there was no slippery feeling during application and no feeling of stickiness or greasiness after application. B+: Five to seven panelists recognized that there was no slippery feeling during application and no feeling of stickiness or greasiness after application. B-: Three to four panelists recognized that there was no slippery feeling during application and no feeling of stickiness or greasiness after application. C: Two or fewer panelists recognized that there was no slippery feeling during application and no feeling of stickiness or greasiness after application.

[0139] (2) UV protection effect, abrasion resistance Each cosmetic was uniformly applied to a PMMA plate so that it became 1.3 mg / cm 2 After that, it was naturally dried for 15 minutes, and the SPF was measured using an SPF analyzer (Optometrics, Labsphere UV-2000S) (SPF before friction). Then, using a friction tester (Tribomaster, Trinity-lab.Inc.), 2×2 cm 2A 100 g load was applied to the terminal with the cotton cloth, and the makeup application part of the PMMA plate was rubbed. The SPF after rubbing was measured with the above SPF analyzer (SPF after friction), and the SPF retention rate was calculated from the following formula to evaluate the abrasion resistance. It can be said that the higher the value of the SPF retention rate, the higher the abrasion resistance. (SPF retention rate (%)) = {(SPF after friction) / (SPF before friction)} × 100

[0140] (Examples 1 - 19 and Comparative Examples 1 - 4 oil-in-water emulsified cosmetics) The oil-in-water emulsified cosmetics of Examples 1 - 19 and Comparative Examples 1 - 4 were manufactured by a conventional method according to the formulations shown in Tables 1 - 4, and the usability (good skin feel), UV protection effect, and abrasion resistance were evaluated. The results are shown in Tables 1 - 4.

[0141]

Table 1

[0142]

Table 2

[0143]

Table 3

[0144]

Table 4

[0145] The symbols in the table indicate the following respectively. *1: AMS - C30 Cosmetic Wax (melting point: 73 - 77 °C, manufactured by Toray Dow Corning); a mixture of 54 mass% of alkyl (C30 - 45) methicone and 46 mass% of olefin (C30 - 45) *2: SW - 8005 C30 Resin Wax (melting point: 63 - 71 °C, manufactured by Toray Dow Corning) *3: Paraffin wax 155 (melting point: 69 °C, manufactured by Nippon Seiro Co., Ltd.) *4: Paraffin wax HNP-9 (Melting point: 75 °C, manufactured by Nippon Seiro Co., Ltd.) *5: Lip wax A-4 (Melting point: 92 - 104 °C, manufactured by Nippon Natural Products Co., Ltd.) *6: Multiwax W-445 S (Melting point: 76.7 - 82.4 °C, manufactured by SONNEBORN) *7: Ceresine wax SP-1020P (Melting point: 73.3 - 76.1 °C, manufactured by STRAHL&PITSCH) *8: 2503 COSMETIC WAX (Melting point: 28 - 35 °C, manufactured by Toray Dow Corning Co., Ltd.) *9: (Acrylates / methacrylic acid polytrimethylsiloxy) copolymer FA 4003 DM (manufactured by Toray Dow Corning Co., Ltd.) *10: (Acrylates / dimethyl silicone) copolymer KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.) *11: Prepared according to the description of Synthesis Example 1 in JP-A-2015-168663 *12: Polypropylsilsesquioxane 670 Fluid (manufactured by Toray Dow Corning Co., Ltd.)

[0146] (Example 20 Water-in-oil emulsion cosmetic) The water-in-oil emulsion cosmetic of Example 20 was produced by a conventional method according to the following formulation, and the usability (good skin feel), UV protection effect, and abrasion resistance were evaluated. The results are shown in Table 5.

[0147]

Table 5

Claims

1. An oil-in-water type emulsifying sunscreen cosmetic containing the following components (A), (B), (C) and (D), provided that it excludes an O / W sunscreen containing 1.0% by mass of hydrochloride of 3-[p-(4-aminomethylcyclohexylcarbonyl)phenyl]propionic acid, 0.5% by mass of microcrystalline wax, 0.5% by mass of beeswax, 0.5% by mass of (alkyl acrylate / dimethicone) copolymer, 1.0% by mass of t-butylmethoxybenzoyl methane, 3.0% by mass of ethylhexyl methoxycinnamate, 0.2% by mass of phenylbenzimidazole sulfonic acid, 6.0% by mass of fine particle titanium oxide, 2.0% by mass of fine particle zinc oxide and 0.5% by mass of crosslinked dimethicone. (A) Wax having a melting point of 55°C or higher: 0.05 to 1.5% by mass (B) (Meth)acrylic silicone resin (C) UV screening agent: 2.5 to 45% by mass (D) Silicone film-forming agent

2. An oil-in-water type emulsifying sunscreen cosmetic containing the following components (A), (B), (C) and (D). (A) Wax having a melting point of 55°C or higher: 0.05 to 1.5% by mass (B) (Meth)acrylic silicone resin (C) UV screening agent: 2.5 to 45% by mass (D) Poly(N-acylalkyleneimine) modified silicone

3. The sunscreen cosmetic according to claim 1 or 2, wherein the wax of component (A) is at least one selected from hydrocarbon waxes and silicone waxes.

4. The sunscreen cosmetic according to any one of claims 1 to 3, wherein component (B) is at least one selected from (meth)acrylic polymers having a dendrimer-type siloxane structure in the side chain and (meth)acrylic-silicone graft copolymers.

5. The sunscreen cosmetic according to any one of claims 1 to 4, wherein the content of component (B) is 0.01 to 10% by mass.

6. The sunscreen cosmetic according to any one of claims 1 to 5, wherein the content of component (B) is 0.1 to 3% by mass.

7. The sunscreen cosmetic according to claim 1, wherein the silicone film-forming agent (D) is poly(N-acylalkyleneimine) modified silicone.

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