Liquid composition

Abstract

To provide a liquid composition having high stability while containing an oil-soluble ultraviolet absorber.SOLUTION: A liquid composition containing (A) an oil-soluble ultraviolet absorber, (B) a polyglycerol fatty acid ester, (C) a polyoxyethylene hydrogenated castor oil and / or a polyoxyethylene fatty acid sorbitan, (D) at least one selected from the group consisting of the following (D-1) and (D-2) (D-1) a higher alcohol, (D-2) one or more surfactants selected from a sorbitan fatty acid ester and a glycerol fatty acid ester, and (E) water is prepared.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a liquid composition, and more particularly to a liquid composition containing an oil-soluble ultraviolet absorber. [Background technology]

[0002] Ultraviolet rays include ultraviolet A rays (UV-A), ultraviolet B rays (UV-B), and others. Of these, UV-A rays have a long wavelength and penetrate deep into the skin, causing effects such as denaturing collagen, and are known to be closely related to the development of age spots and wrinkles.

[0003] UV-B has a shorter wavelength and is blocked by the ozone layer and clouds compared to UV-A, so only about 10% of the total UV radiation reaches the earth. However, UV-B has high energy and can damage cells on the surface of the skin and cause inflammation.

[0004] As the effects of ultraviolet light on the skin become more clear, there is an increasing demand for topical compositions containing ultraviolet absorbers, and various topical compositions have been proposed (Patent Document 1, Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-17080 [Patent Document 2] Japanese Patent Application Publication No. 2019-94312 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a highly stable liquid composition containing an oil-soluble ultraviolet absorber. [Means for solving the problem]

[0007] As a result of extensive research into solving this problem, the present inventors have found that (A) an oil-soluble ultraviolet absorber; (B) a polyglycerin fatty acid ester; (C) polyoxyethylene hydrogenated castor oil and / or polyoxyethylene fatty acid sorbitan; (D-1) a higher alcohol, and / or (D-2) one or more surfactants selected from sorbitan fatty acid esters and glycerin fatty acid esters; and The present inventors have found that by preparing a liquid composition containing (E) water, a highly stable liquid composition can be obtained while still containing an oil-soluble UV absorber, and have thus completed the present invention.

[0008] That is, the present invention provides the following liquid compositions. Section 1. (A) an oil-soluble ultraviolet absorber; (B) polyglycerol fatty acid ester; (C) polyoxyethylene hydrogenated castor oil and / or polyoxyethylene fatty acid sorbitan; (D) At least one selected from the group consisting of the following (D-1) and (D-2): (D-1) Higher alcohol (D-2) one or more surfactants selected from sorbitan fatty acid esters and glycerin fatty acid esters; and (E)Water A liquid composition comprising: Section 2. Item 2. The liquid composition according to Item 1, wherein the polyglycerol fatty acid ester of component (B) has a degree of glycerol polymerization of 2 to 10. Section 3. Item 3. The liquid composition according to Item 1 or 2, wherein the component (C) contains at least polyoxyethylene hydrogenated castor oil, and the polyoxyethylene hydrogenated castor oil has a PEG chain length of 20 to 80. Section 4. Item 3. The liquid composition according to Item 1 or 2, wherein the component (D) contains at least a higher alcohol (D-1). Section 5. Item 3. The liquid composition according to Item 1 or 2, further comprising (F) an ultraviolet absorber dissolved or dispersed in the aqueous phase. Section 6. Item 3. The liquid composition according to item 1 or 2, having a viscosity of 300 mPa·s or less. Section 7. Item 3. The liquid composition according to Item 1 or 2, wherein the ethanol content is 10% by mass or less. Section 8. Item 3. The liquid composition according to item 1 or 2, for use by spraying. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a liquid composition that contains an oil-soluble ultraviolet absorber and yet has high stability. DETAILED DESCRIPTION OF THE INVENTION

[0010] In this specification, the unit of content "% by mass" is synonymous with "g / 100g".

[0011] As used herein, the term "liquid composition" refers to a composition for external use that can be applied to the skin and includes a sunscreen composition that has ultraviolet absorbing properties. Here, the term "sunscreen composition" includes, for example, a product that clearly indicates that it is a sunscreen, but even if it is not clearly indicated, it is acceptable as long as it is a liquid composition that has such a function.

[0012] The liquid composition of the present invention may be an emulsion composition, particularly an oil-in-water (O / W) type composition.

[0013] [Liquid composition] ((A) Oil-soluble UV absorber) The liquid composition of the present invention contains an oil-soluble UV absorber, which allows it to maintain its sunscreen effect. Specifically, it is resistant to sweat and water, prevents smearing after application, and, in combination with other ingredients, provides a highly stable and effective liquid composition. For example, the solubility in water or a pH-adjusted aqueous solution may be 1% by mass or less.

[0014] The oil-soluble ultraviolet absorbers may be used alone or in combination of two or more. The ultraviolet absorbers may be synthesized and used, or commercially available products may be used as they are.

[0015] Oil-soluble ultraviolet absorbers are not limited to, but can be divided into UVA ultraviolet absorbers that have relatively strong absorption in the UVA region and UVB ultraviolet absorbers that have relatively strong absorption in the UVB region, and either may be used or may be combined.

[0016] For example, the UVA ultraviolet absorber may be at least one selected from the group consisting of t-butyl methoxydibenzoylmethane, bisethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, and drometrizole trisiloxane.

[0017] For example, the UVB ultraviolet absorber may be at least one selected from the group consisting of ethylhexyl methoxycinnamate, ethylhexyl salicylate, homosalate, ethylhexyl triazone, octocrylene, and polysilicone-15.

[0018] The component (A) preferably contains both a UVA ultraviolet absorber and a UVB ultraviolet absorber.

[0019] In the liquid composition of the present invention, the content of component (A) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of imparting sufficient UV protection, the content of component (A) relative to the total amount of the liquid composition is 3% by mass or more, more preferably 4% by mass or more, and even more preferably 5% by mass or more. Furthermore, the content of component (A) relative to the total amount of the liquid composition is preferably 20% by mass or less, more preferably 18% by mass or less, even more preferably 15% by mass or less, and most preferably 13% by mass or less. The content of component (A) relative to the total amount of the liquid composition is preferably 3 to 20% by mass, more preferably 4 to 18% by mass, even more preferably 5 to 15% by mass, and most preferably 5 to 13% by mass.

[0020] The content of the UVA absorber in component (A) is preferably 1% by mass or more, more preferably 1.5% by mass or more, and is preferably 10% by mass or less, more preferably 7% by mass or less, more preferably 6% by mass or less, even more preferably 5% by mass or less, and even more preferably 4% by mass or less. The content of the UVB absorber in component (A) is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, and most preferably 4% by mass or more. The content of the UVB absorber is 20% by mass or less, preferably 15% by mass or less, more preferably 13% by mass or less, and even more preferably 12% by mass or less.

[0021] In the liquid composition of the present invention, the ratio of the content of the UVA ultraviolet absorber to the content of the UVB ultraviolet absorber in component (A) is preferably 0.5 parts by mass or more, more preferably 1 part by mass or more, even more preferably 1.5 parts by mass or more, and most preferably 2 parts by mass or more, per part by mass of the content of the UVA ultraviolet absorber, and is preferably 10 parts by mass or less, more preferably 7 parts by mass or less, even more preferably 6 parts by mass or less, and most preferably 5 parts by mass or less.

[0022] ((B) Polyglycerol fatty acid ester) The liquid composition of the present invention contains a polyglycerol fatty acid ester, which maintains the stability of the composition.

[0023] Here, the carbon chain length of the fatty acid contained in the polyglycerol fatty acid ester is not limited, but is preferably 12 or more, more preferably 14 or more, even more preferably 16 or more, and even more preferably 18 or more, and is preferably 22 or less.

[0024] Specific examples of such fatty acids include behenic acid, arachidic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, hydroxystearic acid, myristic acid, palmitic acid, lauric acid, capric acid, and caprylic acid.

[0025] Specific examples of fatty acids having a carbon chain length of 18 or more include behenic acid, arachidic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, and hydroxystearic acid, with stearic acid, isostearic acid, oleic acid, and hydroxystearic acid being preferred.

[0026] The polyglycerol fatty acid ester used in the present invention may be in a form in which one or more of such fatty acids are contained in one molecule. The number of fatty acids contained in one molecule is preferably 1 to 5, more preferably 2 to 5, and even more preferably 3 to 5, because this can improve water resistance without impairing stability and usability.

[0027] Examples of the hydrophobic group of the polyglycerol fatty acid ester containing two or more fatty acids include distearic acid, diisostearic acid, dioleic acid, dilinoleic acid, dihydroxystearic acid, tristearic acid, triisostearic acid, trioleic acid, trilinoleic acid, trihydroxystearic acid, tetrastearic acid, tetraisostearic acid, tetraoleic acid, tetralinoleic acid, tetrahydroxystearic acid, pentastearic acid, pentaisostearic acid, pentaoleic acid, pentalinoleic acid, and pentahydroxystearic acid.

[0028] The degree of polymerization of glycerin in the polyglycerol fatty acid ester is not limited, but is preferably 2 or more, preferably 4 or more, more preferably 6 or more, and may be 10 or more. The degree of polymerization of glycerin in the polyglycerol fatty acid ester is preferably 10 or less, more preferably 4 or more and 10 or less, and more preferably 6 or more and 10 or less.

[0029] The HLB of the polyglycerol fatty acid ester is preferably 14 or less, more preferably 12 or less, and even more preferably 10 or less. The HLB of the polyglycerol fatty acid ester may be 1 or more, preferably 2 or more, more preferably 3 or more, and even more preferably 4 or more.

[0030] Specific examples of polyglycerin fatty acid esters include, but are not limited to, polyglyceryl-10 caprate (HLB=16), polyglyceryl-4 laurate (HLB=10), polyglyceryl-6 laurate (HLB=13), polyglyceryl-10 laurate (HLB=15), polyglyceryl-10 myristate (HLB=15), polyglyceryl-2 isostearate (HLB=5), polyglyceryl-2 oleate (HLB=6), polyglyceryl-2 diisostearate (HLB=3), polyglyceryl-2 tetraisostearate (HLB=4), polyglyceryl-2 tetraisos ... B=1), Polyglyceryl-4 Stearate (HLB=8), Polyglyceryl-4 Isostearate (HLB=8), Polyglyceryl-4 Oleate (HLB=9), Polyglyceryl-4 Tristearate (HLB=5), Polyglyceryl-4 Triisostearate (HLB=5), Polyglyceryl-4 Trioleate (HLB=5), Polyglyceryl-4 Pentastearate (HLB=3), Polyglyceryl-4 Pentaisostearate (HLB=3), Polyglyceryl-4 Pentaoleate (HLB=3), Polyglyceryl-6 Stearate (HLB=3) LB=12), Polyglyceryl-6 Isostearate (HLB=11), Polyglyceryl-4 Oleate (HLB=12), Polyglyceryl-6 Distearate (HLB=8), Polyglyceryl-6 Diisostearate (HLB=8), Polyglyceryl-6 Dioleate (HLB=8), Polyglyceryl-6 Tristearate (HLB=7), Polyglyceryl-6 Triisostearate (HLB=7), Polyglyceryl-6 Trioleate (HLB=7), Polyglyceryl-6 Pentastearate (HLB=5), Polyglyceryl-6 Pentaisostearate Polyglyceryl-6 (HLB=5), Polyglyceryl-6 Pentaoleate (HLB=5), Polyglyceryl-10 Stearate (HLB=14), Polyglyceryl-10 Isostearate (HLB=14), Polyglyceryl-10 Oleate (HLB=13), Polyglyceryl-10 Distearate (HLB=12), Polyglyceryl-10 Diisostearate (HLB=11), Polyglyceryl-10 Dioleate (HLB=11), Polyglyceryl-10 Tristearate (HLB=10), Polyglyceryl-10 Triisostearate (HLB=10),Examples include polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, polyglyceryl-10 pentahydroxystearate (HLB=5), polyglyceryl-10 decaisostearate (HLB=4), polyglyceryl-10 decaoleate (HLB=3), and polyglyceryl-10 dodecabehenate (HLB=3).

[0031] Among them, Polyglyceryl-2 isostearate (HLB=5), Polyglyceryl-2 oleate (HLB=6), Polyglyceryl-2 diisostearate (HLB=3), Polyglyceryl-2 tetraisostearate (HLB=1), Polyglyceryl-4 stearate (HLB=8), Polyglyceryl-4 isostearate (HLB=8), Polyglyceryl-4 oleate (HLB=9), Polyglyceryl-4 tristearate (HLB=5), Polyglyceryl-4 triisostearate (HLB=5), Polyglyceryl-4 trioleate (HLB=5), Polyglyceryl-4 pentastearate (HLB=3), Polyglyceryl-4 pentaisostearate (HLB=3), Polyglyceryl-4 pentaoleate (HLB=3), Polyglyceryl-6 stearate (HLB=12), Polyglyceryl-6 isostearate (HLB=11), Polyglyceryl-4 oleate (HLB=12), Polyglyceryl-6 distearate (HLB=8), Polyglyceryl-6 diisostearate (HLB=8), Polyglyceryl-6 dioleate (HLB=8), Polyglyceryl-6 tristearate (HLB=7), Polyglyceryl-6 triisostearate (HLB=7), Polyglyceryl-6 trioleate (HLB=7), Polyglyceryl-6 pentastearate (HLB=5), Polyglyceryl-6 pentaisostearate (HLB=5), Polyglyceryl-6 pentaoleate (HLB=5), Polyglyceryl-10 stearate (HLB=14), Polyglyceryl-10 isostearate (HLB=14), Polyglyceryl-10 oleate (HLB=13), Polyglyceryl-10 distearate (HLB=12), Polyglyceryl-1 diisostearate 0 (HLB=11), Polyglyceryl-10 Dioleate (HLB=11), Polyglyceryl-10 Tristearate (HLB=10), Polyglyceryl-10 Triisostearate (HLB=10), Polyglyceryl-10 Trioleate (HLB=10), Polyglyceryl-10 Pentastearate (HLB=5), Polyglyceryl-10 Pentaisostearate (HLB=5), Polyglyceryl-10 Pentaoleate, Polyglyceryl-10 Pentahydroxystearate (HLB=5), Polyglyceryl-10 Decaisostearate (HLB=4),Polyglyceryl-10 decaoleate (HLB=3) or polyglyceryl-10 dodecabehenate (HLB=3) is preferred.

[0032] More preferred examples of polyglycerin fatty acid esters include polyglyceryl-4 stearate (HLB=8), polyglyceryl-4 isostearate (HLB=8), polyglyceryl-4 oleate (HLB=9), polyglyceryl-4 tristearate (HLB=5), polyglyceryl-4 triisostearate (HLB=5), polyglyceryl-4 trioleate (HLB=5), polyglyceryl-4 pentastearate (HLB=3), polyglyceryl-4 pentaisostearate (HLB=3), and pentaisostearate. Polyglyceryl-4 oleate (HLB=3), Polyglyceryl-6 stearate (HLB=12), Polyglyceryl-6 isostearate (HLB=11), Polyglyceryl-4 oleate (HLB=12), Polyglyceryl-6 distearate (HLB=8), Polyglyceryl-6 diisostearate (HLB=8), Polyglyceryl-6 dioleate (HLB=8), Polyglyceryl-6 tristearate (HLB=7), Polyglyceryl-6 triisostearate (HLB=7), Polyglyceryl trioleate Glyceryl-6 (HLB=7), Polyglyceryl-6 Pentastearate (HLB=5), Polyglyceryl-6 Pentaisostearate (HLB=5), Polyglyceryl-6 Pentaoleate (HLB=5), Polyglyceryl-10 Stearate (HLB=14), Polyglyceryl-10 Isostearate (HLB=14), Polyglyceryl-10 Oleate (HLB=13), Polyglyceryl-10 Distearate (HLB=12), Polyglyceryl-10 Diisostearate (HLB=11), Polyglyceryl Dioleate at least one selected from the group consisting of polyglyceryl-10 tristearate (HLB=11), polyglyceryl-10 triisostearate (HLB=10), polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, and polyglyceryl-10 pentahydroxystearate (HLB=5); More preferably, polyglyceryl-6 stearate (HLB=12), polyglyceryl-6 isostearate (HLB=11), polyglyceryl-4 oleate (HLB=12), polyglyceryl-6 distearate (HLB=8), polyglyceryl-6 diisostearate (HLB=8), polyglyceryl-6 dioleate (HLB=8), polyglyceryl-6 tristearate (HLB=7), polyglyceryl-6 triisostearate (HLB=7), polyglyceryl-6 trioleate (HLB=7), polyglyceryl-6 pentastearate (HLB=5), polyglyceryl-6 pentaisostearate (HLB=5), polyglyceryl-6 pentaoleate (HLB=5), polyglyceryl-10 stearate (HLB=14), isostearate, polyglyceryl-6 oleate (HLB=5), ... at least one selected from the group consisting of polyglyceryl-10 tearate (HLB=14), polyglyceryl-10 oleate (HLB=13), polyglyceryl-10 distearate (HLB=12), polyglyceryl-10 diisostearate (HLB=11), polyglyceryl-10 dioleate (HLB=11), polyglyceryl-10 tristearate (HLB=10), polyglyceryl-10 triisostearate (HLB=10), polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, and polyglyceryl-10 pentahydroxystearate (HLB=5); Even more preferred are polyglyceryl-6 stearate (HLB=12), polyglyceryl-6 isostearate (HLB=11), polyglyceryl-4 oleate (HLB=12), polyglyceryl-6 distearate (HLB=8), polyglyceryl-6 diisostearate (HLB=8), polyglyceryl-6 dioleate (HLB=8), polyglyceryl-6 tristearate (HLB=7), polyglyceryl-6 triisostearate (HLB=7), polyglyceryl-6 trioleate (HLB=7), polyglyceryl-6 pentastearate (HLB=5), polyglyceryl-6 pentaisostearate (HLB=5), polyglyceryl-6 pentaoleate (HLB=5), polyglyceryl-10 stearate (HLB=14), iso at least one selected from the group consisting of polyglyceryl-10 stearate (HLB=14), polyglyceryl-10 oleate (HLB=13), polyglyceryl-10 distearate (HLB=12), polyglyceryl-10 diisostearate (HLB=11), polyglyceryl-10 dioleate (HLB=11), polyglyceryl-10 tristearate (HLB=10), polyglyceryl-10 triisostearate (HLB=10), polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, and polyglyceryl-10 pentahydroxystearate (HLB=5); Particularly preferred are polyglyceryl-6 distearate (HLB=8), polyglyceryl-6 diisostearate (HLB=8), polyglyceryl-6 dioleate (HLB=8), polyglyceryl-6 tristearate (HLB=7), polyglyceryl-6 triisostearate (HLB=7), polyglyceryl-6 trioleate (HLB=7), polyglyceryl-6 pentastearate (HLB=5), polyglyceryl-6 pentaisostearate (HLB=5), polyglyceryl-6 pentaoleate (HLB=5), polyglyceryl-10 distearate (HLB=12), diglyceryl-6 oleate (HLB=10), polyglyceryl-6 pentastearate (HLB=5), polyglyceryl-6 pentaoleate (HLB=5), polyglyceryl-6 oleate (HLB=10 ... at least one selected from the group consisting of polyglyceryl-10 isostearate (HLB=11), polyglyceryl-10 dioleate (HLB=11), polyglyceryl-10 tristearate (HLB=10), polyglyceryl-10 triisostearate (HLB=10), polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, and polyglyceryl-10 pentahydroxystearate (HLB=5); Polyglyceryl-6 tristearate (HLB=7), Polyglyceryl-6 triisostearate (HLB=7), Polyglyceryl-6 trioleate (HLB=7), Polyglyceryl-6 pentastearate (HLB=5), Polyglyceryl-6 pentaisostearate (HLB=5), Polyglyceryl-6 pentaoleate (HLB=5), Polyglyceryl-10 tristearate (HLB=10), Triisostearate At least one selected from the group consisting of polyglyceryl-10 isostearate (HLB=10), polyglyceryl-10 trioleate (HLB=10), polyglyceryl-10 pentastearate (HLB=5), polyglyceryl-10 pentaisostearate (HLB=5), polyglyceryl-10 pentaoleate, and polyglyceryl-10 pentahydroxystearate (HLB=5) is most preferred.

[0033] In the liquid composition of the present invention, the content of component (B) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of improving stability, the content of component (B) relative to the total amount of the liquid composition is 0.2% by mass or more, more preferably 0.4% by mass or more, and even more preferably 1% by mass or more. From the viewpoint of improving the feel during use, the content of component (B) relative to the total amount of the liquid composition is preferably 7% by mass or less, more preferably 5% by mass or less, even more preferably 4% by mass or less, and most preferably 3% by mass or less. From the viewpoint of improving the feel during use, the content of component (B) relative to the total amount of the liquid composition is preferably 0.2 to 7% by mass, more preferably 0.4 to 5% by mass, even more preferably 1 to 4% by mass, and most preferably 1 to 3% by mass.

[0034] In the liquid composition of the present invention, the ratio of the content of component (B) to component (A) is preferably 0.02 parts by mass or more, more preferably 0.05 parts by mass or more, even more preferably 0.1 parts by mass or more, and most preferably 0.15 parts by mass or more, per part by mass of component (A). The content of component (B) is preferably 1 part by mass or less, more preferably 0.7 parts by mass or less, even more preferably 0.5 parts by mass or less, even more preferably 0.4 parts by mass or less, and most preferably 0.3 parts by mass or less, per part by mass of component (A). The ratio of the content of component (B) to component (A) is, for example, preferably 0.02 to 1 part by mass, more preferably 0.05 to 0.7 parts by mass, more preferably 0.05 to 0.5 parts by mass, even more preferably 0.1 to 0.4 parts by mass, and most preferably 0.15 to 0.3 parts by mass, per part by mass of component (A).

[0035] ((C) Polyoxyethylene hydrogenated castor oil and / or polyoxyethylene fatty acid sorbitan) The liquid composition of the present invention contains a polyglycerol fatty acid ester, which maintains the stability of the composition.

[0036] Here, the chain length of PEG contained in the polyoxyethylene hydrogenated castor oil is not limited, but is preferably 20-80, more preferably 30-60, and even more preferably 40-60.

[0037] Specific examples of polyoxyethylene hydrogenated castor oils include, but are not limited to, one or more selected from the group consisting of PEG-20 hydrogenated castor oil, PEG-25 hydrogenated castor oil, PEG-30 hydrogenated castor oil, PEG-35 hydrogenated castor oil, PEG-40 hydrogenated castor oil, PEG-45 hydrogenated castor oil, PEG-50 hydrogenated castor oil, PEG-55 hydrogenated castor oil, PEG-60 hydrogenated castor oil, and PEG-80 hydrogenated castor oil.

[0038] Specific examples of polyoxyethylene fatty acid sorbitan include, but are not limited to, one or more selected from the group consisting of polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, PEG-6 sorbitan stearate, PEG-6 sorbitan oleate, PEG-40 sorbitan oleate, and PEG-20 sorbitan isostearate.

[0039] In the liquid composition of the present invention, the content of component (C) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of improving stability, the content of component (C) relative to the total amount of the liquid composition is 0.2% by mass or more, more preferably 0.4% by mass or more, and even more preferably 1% by mass or more. From the viewpoint of improving the feel during use, the content of component (C) relative to the total amount of the liquid composition is preferably 10% by mass or less, more preferably 7% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less. From the viewpoint of improving the feel during use, the content of component (C) relative to the total amount of the liquid composition is preferably 0.2 to 10% by mass, more preferably 0.4 to 7% by mass, even more preferably 1 to 5% by mass, and even more preferably 1 to 3% by mass.

[0040] In the liquid composition of the present invention, the ratio of the content of component (C) to component (A) is preferably 0.02 parts by mass or more, more preferably 0.05 parts by mass or more, even more preferably 0.1 parts by mass or more, and most preferably 0.15 parts by mass or more, per 1 part by mass of component (A). The content of component (C) is preferably 1.5 parts by mass or less, more preferably 1.3 parts by mass or less, even more preferably 1 part by mass or less, even more preferably 0.7 parts by mass or less, and most preferably 0.6 parts by mass or less, per 1 part by mass of component (A). The ratio of the content of component (C) to component (A) is, for example, preferably 0.02 to 1.5 parts by mass, more preferably 0.05 to 1 part by mass, more preferably 0.05 to 0.7 parts by mass, even more preferably 0.1 to 0.7 parts by mass, and most preferably 0.15 to 0.6 parts by mass, per 1 part by mass of component (A).

[0041] In the liquid composition of the present invention, the ratio of the content of component (B) to component (C) is preferably 0.1 parts by mass or more, more preferably 0.2 parts by mass or more, more preferably 0.3 parts by mass or more, even more preferably 0.4 parts by mass or more, and most preferably 0.5 parts by mass or more per part by mass of component (C), in order to obtain a highly stable and favorable emulsified state. The content of component (B) is preferably 10 parts by mass or less, more preferably 8 parts by mass or less, even more preferably 5 parts by mass or less, even more preferably 3 parts by mass or less, and most preferably 2 parts by mass or less per part by mass of component (C). The ratio of the content of component (B) to component (C) is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 8 parts by mass, more preferably 0.2 to 5 parts by mass, even more preferably 0.3 to 3 parts by mass, and most preferably 0.5 to 2 parts by mass per part by mass of component (C).

[0042] ((D) Higher alcohol and / or sorbitan fatty acid ester and glycerin fatty acid ester) The liquid composition of the present invention contains (D-1) a higher alcohol and (D-2) one or more selected from the group consisting of a sorbitan fatty acid ester and a glycerin fatty acid ester, thereby maintaining the stability of the composition. That is, the component D may be one or more selected from D-1, one or more selected from D-2, or a combination of one or more selected from each of D-1 and D-2. Although not limited thereto, it is preferable to contain the component D-1.

[0043] ((D-1) Higher alcohol) Specific examples of higher alcohols include, but are not limited to, one or more selected from the group consisting of behenyl alcohol, stearyl alcohol, isostearyl alcohol, and cetyl alcohol, of which behenyl alcohol and / or stearyl alcohol are preferred.

[0044] ((D-2) One or more surfactants selected from sorbitan fatty acid esters and glycerin fatty acid esters) Specific examples of the one or more surfactants selected from sorbitan fatty acid esters and glycerin fatty acid esters include, but are not limited to, one or more selected from the group consisting of sorbitan stearate, sorbitan isostearate, sorbitan oleate, glyceryl stearate, and glyceryl isostearate, of which sorbitan stearate and / or glyceryl stearate are preferred.

[0045] In the liquid composition of the present invention, the content of component (D) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of a balance between improved stability and a good usability, the content of component (D) relative to the total amount of the liquid composition is 0.1% by mass or more, and more preferably 0.2% by mass or more. From the viewpoint of improving the usability, the content of component (D) relative to the total amount of the liquid composition is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1.5% by mass or less, and even more preferably 1% by mass or less. From the viewpoint of improving the usability, the content of component (D) relative to the total amount of the liquid composition is preferably 0.1 to 3% by mass, more preferably 0.2 to 2% by mass, even more preferably 0.2 to 1.5% by mass, and even more preferably 0.2 to 1% by mass.

[0046] In the liquid composition of the present invention, the content of component (D-1) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of a balance between improved stability and a good usability, the content of component (D-1) relative to the total amount of the liquid composition is 0.1% by mass or more, more preferably 0.2% by mass or more. From the viewpoint of improving the usability, the content of component (D-1) relative to the total amount of the liquid composition is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1.5% by mass or less, and even more preferably 1% by mass or less. From the viewpoint of improving the usability, the content of component (D-1) relative to the total amount of the liquid composition is preferably 0.1 to 3% by mass, more preferably 0.2 to 2% by mass, even more preferably 0.2 to 1.5% by mass, and even more preferably 0.2 to 1% by mass.

[0047] In the liquid composition of the present invention, the ratio of the content of component (D) to component (A) is preferably 0.01 parts by mass or more, more preferably 0.02 parts by mass or more, per 1 part by mass of component (A). The content of component (D) is preferably 0.5 parts by mass or less, more preferably 0.3 parts by mass or less, and even more preferably 0.2 parts by mass or less, per 1 part by mass of component (A). The ratio of the content of component (D) to component (A) is, for example, preferably 0.01 to 0.5 parts by mass, more preferably 0.02 to 0.3 parts by mass, and even more preferably 0.02 to 0.2 parts by mass, per 1 part by mass of component (A).

[0048] ((E)Wed) The liquid composition of the present invention contains (E) water, which maintains the stability and good feel of the composition when used.

[0049] In the liquid composition of the present invention, the content of component (E) relative to the total amount of the liquid composition is appropriately set based on the balance with other components. From the viewpoint of a balance between improved stability and a good usability, the content of component (E) relative to the total amount of the liquid composition is 40% by mass or more, more preferably 50% by mass or more, and even more preferably 60% by mass or more. From the viewpoint of an improved usability, the content of component (E) relative to the total amount of the liquid composition is preferably 95% by mass or less, more preferably 90% by mass or less, and even more preferably 85% by mass or less. From the viewpoint of an improved usability, the content of component (E) relative to the total amount of the liquid composition is preferably 40 to 95% by mass, more preferably 50 to 90% by mass, and even more preferably 60 to 85% by mass.

[0050] ((F) UV absorber dissolved or dispersed in aqueous phase) The liquid composition of the present invention may optionally contain components other than the above-mentioned components (A), (B), (C), (D), and (E). A preferred example of such a component is (F) an ultraviolet absorber dissolved or dispersed in the aqueous phase.

[0051] (F) The ultraviolet absorber dissolved or dispersed in the aqueous phase may be dissolved in the aqueous phase or may be dispersed as a solid.

[0052] (F) When the ultraviolet absorber is dissolved or dispersed in the aqueous phase, the organic ultraviolet absorber may be blended in the form of a powder.

[0053] Specific examples of the UV absorber (F) dissolved or dispersed in the aqueous phase include, but are not limited to, one or more selected from the group consisting of phenylbenzimidazole sulfonic acid, terephthalylidene dicamphor sulfonic acid, methylenebis(benzyl)benzotriazolyltetramethylbutylphenol, and tris(biphenyl)triazine. Specific examples of the raw material include, but are not limited to, a raw material containing the UV absorber alone (Parsol HS (DSM)), a raw material containing the UV absorber dissolved in a solvent (Uvinul TS Hydro (BASF)), or a raw material containing the UV absorber dispersed in a dispersion medium using a dispersant (Tinosorb M (BASF), Tinosorb A2B (BASF)). Component (F) may be dissolved or dispersed in the aqueous phase in the final composition.

[0054] For example, when the liquid composition of the present invention is used by spraying, the ultraviolet absorber dissolved or dispersed in the aqueous phase (F) is preferably an ultraviolet absorber dissolved in the aqueous phase, and is preferably phenylbenzimidazole sulfonic acid and / or terephthalylidene dicamphor sulfonic acid, in order to prevent pump clogging. For example, phenylbenzimidazole sulfonic acid in combination with sodium hydroxide or triethanolamine, and / or terephthalylidene dicamphor sulfonic acid dissolved in water can be used as component (F).

[0055] In the liquid composition of the present invention, the content of component (F) relative to the total amount of the liquid composition is preferably 0.1 to 5 mass %, more preferably 0.5 to 4 mass %, and even more preferably 1 to 3 mass % in terms of the content of the ultraviolet absorber, from the viewpoint of a balance between imparting sufficient ultraviolet protection ability and a refreshing feel when used. Note that the content of component (F) in this application refers to the content of the ultraviolet absorber itself, excluding solvents, dispersion media, and dispersants.

[0056] (thickener) The liquid composition of the present invention may optionally contain a thickener in addition to the components (A), (B), (C), (D), and (E).

[0057] Typical examples of thickeners that can be preferably used in the present invention include, but are not limited to, acrylic acid-based thickeners, sugar-based thickeners, and / or clay-based thickeners.

[0058] Specific preferred examples of the acrylic acid-based thickener include one or more selected from the group consisting of acrylates / C10-30 alkyl acrylate crosspolymer, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, acrylamide / ammonium acrylate copolymer, acrylates / beheneth-25 methacrylate sodium crosspolymer, polyacrylate crosspolymer-6, polyacrylate-13, acrylic acid / acryloyldimethyltaurate / dimethylacrylamide crosspolymer, acrylates / steareth-20 itaconate copolymer, ammonium acryloyldimethyltaurate / vinylpyrrolidone copolymer, sodium acrylate / acryloyldimethyltaurate / dimethylacrylamide crosspolymer, steareth-10 allyl ether acrylates copolymer, PEG-240 / decyltetradeceth-20 / HDI copolymer, carboxyvinyl polymer, and polyacrylamide.

[0059] Specific preferred examples of the sugar-based thickener include one or more selected from the group consisting of xanthan gum, hydroxypropyl methylcellulose, hydroxyethyl cellulose, hydrophobized hydroxypropyl methylcellulose, gellan gum, and sclerotium gum.

[0060] Specific preferred examples of the clay-based thickener include one or more selected from the group consisting of bentonite, ionite, and montmorillonite.

[0061] These thickeners may be used alone or in combination of two or more types. When these thickeners are used, it is possible to particularly improve the feel when used and further improve stability.

[0062] Increasing the content of thickeners may result in increased viscosity and squeaking, so the content of acrylic thickeners and / or sugar-based thickeners is preferably 1% by mass or less, more preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, even more preferably 0.2% by mass or less, even more preferably 0.1% by mass or less, and most preferably substantially none (for example, 0.01% by mass or less or 0).

[0063] The content of clay-based thickener is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, even more preferably 0.1% by mass or less, and preferably substantially none (for example, 0.01% by mass or less or 0).

[0064] The total content of thickener is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.3% by mass or less, even more preferably 0.2% by mass or less, even more preferably 0.1% by mass or less, and most preferably substantially none (for example, 0.01% by mass or less or 0).

[0065] (ethanol) The liquid composition of the present invention can be a stable composition with a refreshing feel when used without containing ethanol. In particular, for the purpose of reducing irritation, the ethanol content is preferably 10% by mass or less, more preferably 6% by mass or less, and even more preferably 3% by mass or less. The ethanol content can be 1% by mass or less, or even 0.

[0066] (Physiologically active substances, etc.) The liquid composition of the present invention may contain, in addition to the above-mentioned components (A), (B), (C), (D), and (E), for example, an antioxidant, a whitening active ingredient, and various pharmacologically active ingredients and physiologically active ingredients in combination, as long as the effects of the present invention are not impaired.

[0067] (Other bases or carriers) The liquid composition of the present invention may contain a known base or carrier used in cosmetics or quasi-drugs, provided that the effects of the present invention are not impaired. The base or carrier may be used alone or in combination of two or more.

[0068] (additives) The liquid composition of the present invention can contain known additives added to cosmetics and quasi-drugs, such as preservatives, pH adjusters, chelating agents, stabilizers, irritation reducers, antiseptics, colorants, etc., within the scope of not impairing the effects of the present invention. The additives can be used alone or in combination of two or more.

[0069] Examples of preservatives and antiseptics include benzoic acid, sodium benzoate, dehydroacetic acid, sodium dehydroacetate, isobutyl parahydroxybenzoate, isopropyl parahydroxybenzoate, butyl parahydroxybenzoate, ethyl parahydroxybenzoate, propyl parahydroxybenzoate, benzyl parahydroxybenzoate, methyl parahydroxybenzoate, phenoxyethanol, etc. Among these, methyl parahydroxybenzoate, propyl parahydroxybenzoate, and phenoxyethanol are preferred.

[0070] Examples of pH adjusters include inorganic acids (hydrochloric acid, sulfuric acid, phosphoric acid, polyphosphoric acid, boric acid, etc.), organic acids (lactic acid, acetic acid, citric acid, sodium citrate, tartaric acid, malic acid, succinic acid, sodium succinate, oxalic acid, gluconic acid, fumaric acid, propionic acid, acetic acid, aspartic acid, ε-aminocaproic acid, glutamic acid, aminoethylsulfonic acid, etc.), gluconolactone, ammonium acetate, inorganic bases (sodium bicarbonate, sodium carbonate, potassium hydroxide, sodium hydroxide, calcium hydroxide, magnesium hydroxide, etc.), organic bases (monoethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine, lysine, etc.), etc. Among these, succinic acid, sodium succinate, citric acid, sodium citrate, triethanolamine, potassium hydroxide, and sodium hydroxide are preferred.

[0071] Examples of chelating agents include ethylenediaminetetraacetic acid (edetic acid), ethylenediaminetetraacetate (sodium salt (sodium edetate: Japanese Pharmacopoeia, EDTA-2Na, etc.), potassium salt, etc.), phytic acid, gluconic acid, polyphosphoric acid, and metaphosphoric acid. Of these, sodium edetate is preferred.

[0072] The stabilizer may include butylhydroxyanisole.

[0073] Examples of irritation reducers include licorice extract, sodium alginate, and 2-methacryloyloxyethyl phosphorylcholine.

[0074] Examples of colorants include inorganic pigments and natural dyes.

[0075] (viscosity) The liquid composition of the present invention is preferably, but not limited to, stable, without separation, while having a relatively low viscosity and a refreshing feel when used. From the viewpoint of providing a refreshing feel when used, the viscosity of the liquid composition of the present invention, when measured at 25°C using a Brookfield viscometer, is typically 1 to 300 mPa·s, preferably 1 to 200 mPa·s, more preferably 1 to 100 mPa·s, even more preferably 1 to 50 mPa·s, even more preferably 1 to 20 mPa·s, even more preferably 1 to 15 mPa·s, and most preferably 1 to 10 mPa·s. For example, viscosity can be measured by placing a sample in a 100 mL screw tube (40 mm × 120 mm) and measuring the viscosity 60 seconds after the start of measurement using a Brookfield viscometer with a spindle rotor (M1) at a rotation speed of 100 rpm.

[0076] (Form of formulation) The liquid composition of the present invention can be prepared by, for example, mixing and stirring the components according to a conventional method.

[0077] The liquid composition of the present invention is not particularly limited in its pharmaceutical form, and can take any known form as a cosmetic or quasi-drug. Examples of such known forms include solutions, suspensions, emulsions, creams, gels, liniments, lotions, aerosols, powders, poultices, sheets in which a sheet such as a nonwoven fabric is impregnated with a pharmaceutical solution, and lip emulsions. Among these, solutions, suspensions, emulsions, creams, gels, and lotions are preferred due to their pleasant feel when used. The liquid composition of the present invention is more preferably used in the form of a mist contained in a spray container, a lotion, or a sheet in which a nonwoven fabric is impregnated. While not limited thereto, the liquid composition of the present invention is particularly preferably a mist contained in a spray container.

[0078] (container) The material of the container for containing the liquid composition of the present invention is not particularly limited, but examples include polyethylene terephthalate, polypropylene, polyethylene (HDPE, LDPE, LLDPE, etc.), ABS resin, ethylene vinyl alcohol resin, polystyrene, glass, metal (aluminum, etc.), and mixtures thereof.

[0079] (Application) The liquid composition of the present invention can be applied to the arms, face, legs, scalp, hair, neck, chest, back skin, or the whole body.It can be in a form with reduced irritation, for example, for babies, infants, children, those with weak skin, sensitive skin, dry skin, sensitive skin, or troubled skin.For example, when used as a mist agent contained in a spray container, it can be sprayed directly on the face.

[0080] The liquid composition of the present invention has an ultraviolet absorbing function, and can be a liquid composition having, for example, a high SPF (Sun Protection Factor) value, which is a protection index against ultraviolet B rays (UV-B), or a high PA (Protection Grade of UVA) value, which is a protection index against ultraviolet A rays (UV-A).

[0081] The liquid composition of the present invention can be used as a sunscreen regardless of the contents of the product. The liquid composition of the present invention can also be used in applications requiring water resistance. Furthermore, the liquid composition of the present invention can also be used in applications requiring sustained UV protection. [Example]

[0082] Next, the present invention will be specifically explained by way of examples, but the present invention is not limited to the following examples. The unit of the amount of each component in Tables 1 to 4 is mass %.

[0083] Liquid compositions having the compositions shown in Tables 1 to 4 were prepared according to conventional methods. Specifically, each component was weighed and heated to dissolve. Then, the aqueous phase was added to the oil phase, stirred with a magnetic stirrer, and cooled to room temperature to prepare a homogeneous composition.

[0084] (Test Example 1) Stability evaluation test The compositions of each example and comparative example listed in Tables 1 to 4 were visually evaluated immediately after preparation. Then, 20 g of each was filled into a glass physical property bottle with a capacity of 30 g and placed in a thermo-hygrostat. After one month at 40°C or one week at 60°C, the container was removed from the thermo-hygrostat, and the condition of the composition was visually evaluated. The viscosity of the formulations in the examples was approximately 6 to 10 mPa·s. <Evaluation criteria> ◎ White or cloudy, properly emulsified 〇 The emulsion is maintained overall, but there is slight settling. △ Most of the emulsion is maintained, but slight separation is observed. × Clear separation of the water and oil phases or excessive sedimentation

[0085] [Table 1] It was confirmed that all of the compositions of the examples were highly stable. In particular, the stability was extremely excellent when PEG-hydrogenated castor oil with a PEG chain length of 30 to 60 was used as component (C). Here, the content of component (F) in the table indicates the amount of phenylbenzimidazole sulfonic acid itself.

[0086] [Table 2] It was confirmed that all of the compositions of the examples were highly stable. In particular, when a polyglycerol fatty acid ester having a degree of glycerol polymerization of 6 to 10 was used as component (B), the stability was extremely excellent. The content of component (F) in the table indicates the amount of phenylbenzimidazole sulfonic acid itself.

[0087] [Table 3] It was confirmed that all of the compositions of the examples were highly stable. In particular, when a higher alcohol was used as component (D), the stability was extremely excellent. The content of component (F) in the table indicates the amount of phenylbenzimidazole sulfonic acid itself.

[0088] [Table 4] It was confirmed that all of the compositions of the examples were highly stable. Furthermore, it was confirmed that they were not sticky when applied to the skin and provided a refreshing feeling when used. The content of component (F) in the table indicates the amount of phenylbenzimidazole sulfonic acid or terephthalylidene dicamphor sulfonic acid itself.

[0089] (Test Example 1: Evaluation of UV absorption ability) Each composition of the Examples and Comparative Examples was uniformly applied to a polymethyl methacrylate (PMMA) plate at a concentration of 1.3 mg / cm2 and allowed to dry in the dark for 15 minutes. The UV absorption spectrum was then measured using a UV-visible spectrophotometer (UV-2450, manufactured by Shimadzu Corporation). For example, the area under the absorbance curve (AUC) from 290 to 400 nm was compared with that of a blank formulation to calculate the UV absorption spectrum increase (enhancement effect). The formula is as follows: Increase rate of ultraviolet absorption spectrum = [(AUC of each example) / (AUC of each comparative example)] × 100 (%). Note that the ultraviolet absorption spectrum can also be measured at multiple different points on the same PMMA plate and the average value taken. Furthermore, by plotting the rate of increase in the ultraviolet absorption spectrum against the concentration of a specific ultraviolet absorber and determining the slope using the least squares method, the efficiency of the ultraviolet absorber's effect of increasing the ultraviolet absorption spectrum can be evaluated.

Claims

1. (A) an oil-soluble ultraviolet absorber; (B) polyglycerol fatty acid ester; (C) polyoxyethylene hydrogenated castor oil and / or polyoxyethylene fatty acid sorbitan; (D) At least one selected from the group consisting of the following (D-1) and (D-2): (D-1) Higher alcohol (D-2) one or more surfactants selected from sorbitan fatty acid esters and glycerin fatty acid esters; and (E) Water A liquid composition comprising:

2. 2. The liquid composition according to claim 1, wherein the polyglycerol fatty acid ester of component (B) has a degree of glycerol polymerization of 2 to 10.

3. 3. The liquid composition according to claim 1, wherein the component (C) contains at least polyoxyethylene hydrogenated castor oil, and the PEG chain length of the polyoxyethylene hydrogenated castor oil is 20 to 80.

4. The liquid composition according to claim 1 or 2, wherein the component (D) comprises at least a higher alcohol (D-1).

5. The liquid composition according to claim 1 or 2, further comprising (F) an ultraviolet absorber dissolved or dispersed in the aqueous phase.

6. 3. The liquid composition according to claim 1, wherein the viscosity is 300 mPa·s or less.

7. The liquid composition according to claim 1 or 2, wherein the ethanol content is 10% by mass or less.

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