Film-forming agent for application and kit including said forming agent

Abstract

The purpose of the present invention is to provide a film-forming agent for application which contains an oil-soluble ultraviolet absorber and is capable of forming a film that exhibits excellent ultraviolet protection performance.　A film-forming agent for application according to the present disclosure contains a first agent containing a crosslinkable component as a constituent of a film and a second agent containing a catalyst for crosslinking the crosslinkable component. The first agent and / or the second agent contains an unsaturated organopolysiloxane having a phenyl group and a vinyl group. The first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains an oil-soluble ultraviolet absorber. In the unsaturated organopolysiloxane having a phenyl group and a vinyl group, the ratio of the number of moles of the phenyl group to the number of moles of the vinyl group is 0.40 or less.

Description

Coating-type film-forming agent and kit containing said agent

[0001] The present disclosure relates to a paint-on film-forming agent and a kit containing the agent.

[0002] There are known topical film-forming agents that can be applied to the body surface to form a film that can correct wrinkles, scars, and the like.

[0003] Patent Document 1 discloses a composition for in situ formation of a layer on the skin surface of a subject, the composition comprising one or more crosslinkable polymers, and an artificial skin comprising a layer formed from the composition.

[0004] Special table 2019-503396 publication

[0005] It has been found that when an oil-soluble ultraviolet absorber is blended with a coating-type film-forming agent such as that described in Patent Document 1, the resulting film may not exhibit suitable ultraviolet protection performance.

[0006] Therefore, an object of the present disclosure is to provide a paint-on film-forming agent that contains an oil-soluble UV absorber and is capable of forming a film that exhibits excellent UV protection performance.

[0007] Aspect 1: A paint-on film-forming agent comprising a first agent containing a crosslinkable reactive component that forms a film, and a second agent containing a catalyst that crosslinks the crosslinkable reactive component, wherein the first agent and / or the second agent contain an unsaturated organopolysiloxane having a phenyl group and a vinyl group, and the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains an oil-soluble ultraviolet absorber, and the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a ratio of the number of moles of the phenyl group to the number of moles of the vinyl group of 0.40 or less. Aspect 2 The forming agent according to Aspect 1, wherein the first agent comprises at least one selected from the group consisting of a first unsaturated organopolysiloxane and a first hydride-functionalized polysiloxane; when the first agent comprises only the first unsaturated organopolysiloxane of the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent comprises the second hydride-functionalized polysiloxane; when the first agent comprises only the first hydride-functionalized polysiloxane of the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent comprises the second unsaturated organopolysiloxane; and at least one of the first unsaturated organopolysiloxane and the second unsaturated organopolysiloxane comprises the unsaturated organopolysiloxane having a phenyl group and a vinyl group. <Aspect 3> The former according to Aspect 1 or 2, wherein the oil-soluble UV absorber comprises an UV absorber having an IOB of 0.10 or more. <Aspect 4> The former according to any one of Aspects 1 to 3, wherein the first agent comprises the unsaturated organopolysiloxane having a phenyl group and a vinyl group and the oil-soluble UV absorber. <Aspect 5> The former according to any one of Aspects 1 to 4, wherein the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a ratio of the number of moles of the phenyl group to the number of moles of the vinyl group of 0.0040 or more. <Aspect 6> The former according to any one of Aspects 1 to 5, wherein the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a weight average molecular weight of 100,000 or less.<Aspect 7> The former according to any one of Aspects 1 to 6, wherein the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains a silicone oil. <Aspect 8> The former according to any one of Aspects 1 to 7, wherein the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains inorganic particles. <Aspect 9> The former according to any one of Aspects 1 to 8, wherein the unsaturated organopolysiloxane having a phenyl group and a vinyl group is at least one selected from the group consisting of a vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer, a vinyl-terminated polyphenylmethylsiloxane, and a vinylphenylmethyl-terminated vinylphenylsiloxane-phenylmethylsiloxane copolymer. Aspect 10: The forming agent according to any one of Aspects 2 to 9, wherein the first hydride-functionalized polysiloxane and the second hydride-functionalized polysiloxane are non-terminally and / or terminally hydrogenated organopolysiloxanes. Aspect 11: The forming agent according to aspect 10, wherein the first hydride-functionalized polysiloxane and the second hydride-functionalized polysiloxane are at least one selected from the group consisting of hydride-terminated polydimethylsiloxane, hydride-terminated polyphenyl-(dimethylhydrosiloxy)siloxane, hydride-terminated methylhydrosiloxane-phenylmethylsiloxane copolymer, trimethylsiloxy-terminated methylhydrosiloxane-dimethylsiloxane copolymer, polymethylhydrosiloxane, trimethylsiloxy-terminated polyethylhydrosiloxane, triethylsiloxane, methylhydrosiloxane-phenyloctylmethylsiloxane copolymer, and methylhydrosiloxane-phenyloctylmethylsiloxane terpolymer. Aspect 12: The forming agent according to any one of aspects 1 to 11, wherein the catalyst is at least one selected from the group consisting of a platinum catalyst, a rhodium catalyst, and a tin catalyst.Aspect 13: The forming agent according to Aspect 12, wherein the catalyst is a platinum catalyst, and the platinum catalyst is at least one selected from the group consisting of a platinum carbonylcyclovinylmethylsiloxane complex, a platinum divinyltetramethyldisiloxane complex, a platinum cyclovinylmethylsiloxane complex, and a platinum octanaldehyde / octanol complex. Aspect 14: A kit, wherein the first and second parts of the forming agent according to any one of Aspects 1 to 13 are contained in separate containers, or are contained separately in each compartment of a container having two or more compartments.

[0008] According to the present disclosure, it is possible to provide a paint-type film-forming agent that contains an oil-soluble UV absorber and is capable of forming a film that exhibits excellent UV protection performance.

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present disclosure is not limited to the following embodiments, and various modifications can be made within the scope of the present invention.

[0010] The paint-on film-forming agent of the present disclosure comprises a first agent containing a crosslinkable reactive component that constitutes a film, and a second agent containing a catalyst that crosslinks the crosslinkable reactive component, wherein the first agent and / or the second agent contains an unsaturated organopolysiloxane having a phenyl group and a vinyl group, and the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains an oil-soluble ultraviolet absorber, and the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a ratio of the number of moles of phenyl groups to the number of moles of vinyl groups of 0.40 or less.

[0011] Without being limited by theory, the principle of action that enables the spreadable film-forming agent of the present disclosure to contain an oil-soluble UV absorber and to form a film that exhibits excellent UV protection performance is believed to be as follows.

[0012] The paint-on film-forming agent described in Patent Document 1 typically contains unsaturated organopolysiloxanes, which are also considered oils. Therefore, it was expected that if an oil-soluble UV absorber was used, the resulting film would exhibit good UV protection performance. However, it was found that even if an oil-soluble UV absorber was used, the resulting film sometimes did not exhibit good UV protection performance.

[0013] The present inventors have unexpectedly discovered that when an unsaturated organopolysiloxane containing phenyl groups and vinyl groups, in which the phenyl groups are contained in a specific ratio, is used as the unsaturated organopolysiloxane, and when an oil-soluble ultraviolet absorber is used, the resulting film exhibits excellent ultraviolet protection performance.

[0014] Although unsaturated organopolysiloxanes containing phenyl and vinyl groups do not themselves have excellent UV protection properties, the films obtained using such materials are still able to exhibit excellent UV protection properties, which is believed to be due to the compatibility of the unsaturated organopolysiloxane and the UV absorber in the film-forming agent.

[0015] Even when using the unsaturated organopolysiloxane that does not have phenyl groups in a specific proportion, it is believed that the oil-soluble UV absorber does not bleed out from the film, and therefore remains in the film.However, in this system, the oil-soluble UV absorber has poor compatibility, is not uniformly dispersed in the film, and exists locally as a single unit, so it is believed that the UV protection performance is not fully exhibited.On the other hand, when using the unsaturated organopolysiloxane that has phenyl groups in a specific proportion, the influence of this specific proportion of phenyl groups makes the oil-soluble UV absorber easy to mix, and as a result, the oil-soluble UV absorber is uniformly dispersed in the film, and therefore it is believed that the UV protection performance is improved.

[0016] Conventional sunscreen cosmetics have had the problem of peeling off, for example, when applied to the skin due to sweat or rubbing. The apply-type film-forming agent of the present disclosure can form a film by applying the agent to the skin, for example, and crosslinking, and the resulting crosslinked film is more resistant to peeling off due to rubbing, etc., than films obtained by applying conventional sunscreen cosmetics to the skin. Therefore, it is believed that the apply-type film-forming agent of the present disclosure, which can exhibit good UV protection performance, can also contribute to solving the peeling-off problem that conventional sunscreen cosmetics have had.

[0017] Furthermore, when conventional sunscreen cosmetics are to be removed from the skin, for example, it is necessary to wash the skin off using a cleanser or the like. On the other hand, the film formed by the spread-type film-forming agent of the present disclosure has a crosslinked structure and therefore has superior film strength compared to films without a crosslinked structure. As a result, unlike films formed by conventional sunscreen cosmetics, this film has the advantage of being easily peelable from the skin, for example.

[0018] The definitions of terms used in this disclosure are as follows:

[0019] In the present disclosure, a "body correction coating" refers to a coating that is intended to provide a natural skin appearance when applied to a subject's skin. Here, "natural skin appearance" means that when applied to the skin, the body correction coating will provide similar or identical performance to at least one of the appearance, feel, and texture of real skin, e.g., the treated skin may provide the physical properties (e.g., elasticity and firmness) of real (e.g., natural) skin.

[0020] In this disclosure, "body correction" refers to masking, concealing, or covering a subject's body imperfections or skin imperfections to visually and / or tactilely improve the body or skin imperfections, but does not include methods of surgery, treatment, or diagnosis of humans. Here, "body imperfections" can refer to, for example, areas of a subject's body that a subject perceives as a blemish or flaw, or that a person skilled in the art, such as a dermatologist, aesthetician, or plastic surgeon, would consider to be a blemish or flaw. "Body imperfections" include skin imperfections and loose soft tissues of the body (e.g., loose or sagging skin, looseness of the breasts, buttocks, abdomen, chin, neck, etc.). "Skin imperfections" also include those items of a subject's skin that a subject perceives as a blemish or flaw. Examples of skin imperfections include nevus flammeus or nevus flame (e.g., hemangioma simplex or midline nevus flammeus), melasma, wrinkles, age spots, acne, moles, scars, tattoos, birthmarks, skin deformities, birthmarks, sun damage, aging, uneven skin tone, loose skin, rough skin, hyperpigmentation, enlarged pores, telangiectasia, redness, shine, cellulite, stretch marks, or loss of skin elasticity.

[0021] In this disclosure, "viscosity" refers to a measure of the resistance of a fluid to being deformed by either shear stress or tensile stress. For example, the viscosity of the first and second parts of a paint-on film-forming agent affects the thickness, spreadability, and uniformity and / or evenness of the layer formed on a substrate. Viscosity can be measured using dynamic viscosity (also known as absolute viscosity, typical units are Pa s, poise, P, cP) or kinematic viscosity (typical units are cm ２ / s, Stokes, St, or cst), where kinematic viscosity is dynamic viscosity divided by the density of the measured fluid. Viscosity ranges for the components disclosed herein are generally provided by each component supplier in units of kinematic viscosity (e.g., cst) measured using a rheometer or a Cannon-Fenske tube viscometer, although fluid viscosity can also be measured using, for example, a rheometer (e.g., a linear shear rheometer or a dynamic shear rheometer) or a viscometer (a viscometer, also called a capillary viscometer or a rotational viscometer).

[0022] In the present disclosure, "crosslinking" also encompasses the concept generally referred to as "curing."

[0023] In the present disclosure, the term "target site" refers to a site (for example, skin) to which UV protection performance is to be imparted.

[0024] <<Apply-on Film-Forming Agent>> The apply-on film-forming agent (sometimes simply referred to as a "former") of the present disclosure comprises a first agent containing a crosslinkable component that constitutes a film, and a second agent containing a catalyst that crosslinks the crosslinkable component, wherein the first agent and / or the second agent contains an unsaturated organopolysiloxane having a phenyl group and a vinyl group, and the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains an oil-soluble UV absorber, and the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a ratio of the number of moles of phenyl groups to the number of moles of vinyl groups of 0.40 or less.

[0025] The film obtained by the application-type film-forming agent of the present disclosure may be a body-correcting film having a body-correcting function, or may be a film without a body-correcting function. The film obtained by the application-type film-forming agent of the present disclosure can improve the strength (e.g., toughness) of the film, and therefore can also improve the body-correcting function. Therefore, the application-type film-forming agent of the present disclosure can be suitably used as an application-type body-correcting film-forming agent.

[0026] <First Agent> The paint-type film-forming agent of the present disclosure includes a first agent that contains a crosslinkable component that forms a film.

[0027] The first agent may contain the above-mentioned unsaturated organopolysiloxane having phenyl groups and vinyl groups, which contains phenyl groups in a specific ratio (sometimes simply referred to as "unsaturated organopolysiloxane having phenyl groups and vinyl groups"). Since the first agent contains crosslinkable reactive components that constitute the coating and can form the final coating, if the first agent contains an oil-soluble UV absorber together with the unsaturated organopolysiloxane having phenyl groups and vinyl groups, the UV protection performance of the resulting coating can be further improved.

[0028] (Unsaturated organopolysiloxane having phenyl groups and vinyl groups) In the unsaturated organopolysiloxane having phenyl groups and vinyl groups, the mole number of phenyl groups relative to the mole number of vinyl groups is preferably 0.37 or less, 0.35 or less, 0.33 or less, 0.30 or less, 0.27 or less, 0.25 or less, or 0.23 or less, from the viewpoints of the strength of the obtained coating, compatibility with the oil-soluble UV absorber, and UV protection performance, and is also preferably 0.0040 or more, 0.0045 or more, 0.0050 or more, 0.0070 or more, 0.010 or more, more than 0.010, 0.011 or more, 0.012 or more, 0.013 or more, or 0.014 or more. Here, the mole number of vinyl groups and phenyl groups in the unsaturated organopolysiloxane is １ It can be measured by a relative quantitative method using H-NMR (nuclear magnetic resonance).

[0029] From the viewpoints of compatibility with oil-soluble UV absorbers, UV protection performance, etc., the unsaturated organopolysiloxane having phenyl groups and vinyl groups preferably has a weight-average molecular weight of 100,000 or less, 80,000 or less, 60,000 or less, 50,000 or less, or 40,000 or less, more preferably 30,000 or less, 29,000 or less, 28,000 or less, or 27,000 or less, and preferably 5,000 or more, 6,000 or more, 7,000 or more, or 8,000 or more, and more preferably 9,000 or more, 9,300 or more, or 9,500 or more. Here, the term "weight-average molecular weight" in the present disclosure refers to the weight-average molecular weight in terms of polystyrene as measured by gel permeation chromatography.

[0030] The unsaturated organopolysiloxane having phenyl groups and vinyl groups may have a viscosity of 100 to 200,000 cst at 25° C. The lower limit of this viscosity may be 200 cst or more, 300 cst or more, 400 cst or more, or 500 cst or more. The upper limit of the viscosity may be 150,000 cst or less, 100,000 cst or less, 80,000 cst or less, or 60,000 cst or less.

[0031] The unsaturated organopolysiloxane having phenyl groups and vinyl groups is not particularly limited, and examples thereof include at least one selected from the group consisting of vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer, vinyl-terminated polyphenylmethylsiloxane, and vinylphenylmethyl-terminated vinylphenylsiloxane-phenylmethylsiloxane copolymer. Among these, from the viewpoints of compatibility with oil-soluble UV absorbers, UV protection performance, etc., it is preferable that the unsaturated organopolysiloxane having phenyl groups and vinyl groups includes a vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer.

[0032] In some embodiments, the first agent of the present disclosure contains at least one crosslinkable component selected from the group consisting of a first unsaturated organopolysiloxane and a first hydride-functionalized polysiloxane. From the viewpoint of obtaining a good coating, when the first agent contains only the first unsaturated organopolysiloxane of the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent in the forming agent of the present disclosure preferably contains the second hydride-functionalized polysiloxane. Also, when the first agent contains only the first hydride-functionalized polysiloxane of the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent preferably contains the second unsaturated organopolysiloxane. From the viewpoint of obtaining a better coating, it is preferable that the first agent contains both the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane. At least one of the first unsaturated organopolysiloxane and the second unsaturated organopolysiloxane contains the above-mentioned unsaturated organopolysiloxane having a phenyl group and a vinyl group.

[0033] The dosage form of the first agent is not particularly limited, and may be, for example, a single-phase system composed of an oil phase, a non-emulsified oil-in-water or water-in-oil two-phase system, or a two-phase system composed of an oil-in-water emulsion composition or a water-in-oil emulsion composition. Here, a single-phase system composed of an oil phase is typically an anhydrous form. In the present disclosure, "anhydrous" not only refers to a composition that does not contain water, but also refers to a low water content, i.e., 10% by mass or less, 5% by mass or less, 2% by mass or less, 1% by mass or less, 0.1% by mass or less, or 0.01% by mass or less. Furthermore, a non-emulsified two-phase system may include a water-in-oil composition in which water droplets are forcibly dispersed in an oil-containing dispersion medium by shaking a liquid in a state where the water and oil have separated, or an oil-in-water composition in which oil droplets are forcibly dispersed in a water-containing dispersion medium.

[0034] These formulations can be prepared appropriately by conventional methods using a crosslinkable component and, optionally, known materials such as oil, emulsifier, and water, as described below.

[0035] Since the first agent is applied to a target site (e.g., skin) by application or the like, it preferably has a glass transition temperature equal to or lower than body temperature from the viewpoint of application performance. For example, the glass transition temperature can be 37°C or lower, 25°C or lower, 10°C or lower, or 0°C or lower. There is no particular restriction on the lower limit of the glass transition temperature, but it can be, for example, -30°C or higher, -20°C or higher, or -10°C or higher. Here, "glass transition temperature" refers to the temperature at which a transition from a solid state to a liquid state occurs, and can be measured, for example, using a differential scanning calorimeter (DSC) in accordance with ASTM D3418-03.

[0036] (First Unsaturated Organopolysiloxane) The first unsaturated organopolysiloxane may be an organopolysiloxane having an unsaturated moiety, such as one or more organopolysiloxanes having at least two carbon-carbon double bonds or at least one carbon-carbon triple bond in the molecule. Such unsaturated organopolysiloxanes are preferably one or more organopolysiloxanes having an average of at least two alkenyl functional groups (e.g., vinyl functional groups) and a viscosity of 1,000 to 2,000,000 cst at 25°C. In this disclosure, "unsaturated moiety" refers to a moiety having a "carbon-carbon double bond" or a "carbon-carbon triple bond," which may also be simply referred to as a "double bond" and a "triple bond." The first unsaturated organopolysiloxane may be used alone or in combination of two or more types.

[0037] Such organopolysiloxanes may contain unsaturation (double or triple bond moieties) in the terminal units of the polymer, in the non-terminal monomer units of the polymer, or a combination thereof.

[0038] In one embodiment, the double bond-containing monomer units in the first unsaturated organopolysiloxane, particularly the other unsaturated organopolysiloxane other than the unsaturated organopolysiloxane having a phenyl group and a vinyl group (sometimes simply referred to as the “other unsaturated organopolysiloxane”), may be spaced apart, on average, by 40 monomer units or more, 200 monomer units or more, 400 monomer units or more, 1,000 monomer units or more, or 2,000 monomer units or more.

[0039] In one embodiment, the unsaturated moiety content of the first unsaturated organopolysiloxane, particularly the other unsaturated organopolysiloxane, can be 0.001 mmol / g or more, 0.005 mmol / g or more, 0.010 mmol / g or more, 0.050 mmol / g or more, or 0.10 mmol / g or more, and can be 5.0 mmol / g or less, 3.0 mmol / g or less, 1.0 mmol / g or less, 0.50 mmol / g or less, 0.40 mmol / g or less, 0.30 mmol / g or less, 0.25 mmol / g or less, 0.20 mmol / g or less, or 0.15 mmol / g or less. The approximate molar amount of unsaturated moiety in such organopolysiloxanes can be calculated based on the average molecular weight of the organopolysiloxane.

[0040] In one embodiment, the first unsaturated organopolysiloxane, particularly the other unsaturated organopolysiloxane, can have a viscosity of 500 to 2,000,000 cst at 25° C. The lower limit of the viscosity can be 700 cst or more, 1,000 cst or more, 3,000 cst or more, 5,000 cst or more, 10,000 cst or more, 20,000 cst or more, 40,000 cst or more, 60,000 cst or more, 80,000 cst or more, 100,000 cst or more, 125,000 cst or more, or 150,000 cst or more. The upper limit of the viscosity can be 1,000,000 cst or less, 500,000 cst or less, 450,000 cst or less, 400,000 cst or less, 350,000 cst or less, 300,000 cst or less, 250,000 cst or less, 200,000 cst or less, 180,000 cst or less, 170,000 cst or less, or 165,000 cst or less.

[0041] In one embodiment, the first unsaturated organopolysiloxane, particularly the other unsaturated organopolysiloxane, can have an average molecular weight of 30,000 Da to 500,000 Da. The lower limit of the average molecular weight is preferably 35,000 Da or more, 40,000 Da or more, 50,000 Da or more, 60,000 Da or more, 72,000 Da or more, 84,000 Da or more, 96,000 Da or more, or 100,000 Da or more, and more preferably 140,000 Da or more or 150,000 Da or more. The upper limit of the average molecular weight is preferably 200,000 Da or less, 190,000 Da or less, 180,000 Da or less, or 170,000 Da or less, more preferably 160,000 Da or less, and even more preferably 155,000 Da or less. The average molecular weight in the present disclosure can be determined by gel permeation chromatography (GPC).

[0042] As the first unsaturated organopolysiloxane, for example, at least one unsaturated organopolysiloxane selected from the group consisting of the above-mentioned unsaturated organopolysiloxanes having a phenyl group and a vinyl group, and other unsaturated organopolysiloxanes, can be used.

[0043] Other unsaturated organopolysiloxanes that can be used as the first unsaturated organopolysiloxane include, for example, at least one unsaturated organopolysiloxane selected from the group consisting of organopolysiloxanes having vinyl groups, vinyl-terminated organopolysiloxanes, and organopolysiloxanes having vinylated branched chains.

[0044] Specific examples of other unsaturated organopolysiloxanes include vinyl-terminated polydimethylsiloxane, vinyl-terminated trifluoropropylmethylsiloxane-dimethylsiloxane copolymer, vinyl-terminated diethylsiloxane-dimethylsiloxane copolymer, vinylmethylsiloxane-dimethylsiloxane copolymer, trimethylsiloxy-terminated vinylmethylsiloxane-dimethylsiloxane copolymer, silanol-terminated vinylmethylsiloxane-dimethylsiloxane copolymer, vinylmethylsiloxane homopolymer, vinyl T-structure polymer, vinyl Q-structure polymer, monovinyl-terminated polydimethylsiloxane, vinylmethylsiloxane terpolymer, and vinylmethoxysilane homopolymer. The first unsaturated organopolysiloxane can be used alone or in combination. Of these, vinyl-terminated polydimethylsiloxane is preferred, and vinyl dimethicone (divinyl dimethicone) is more preferred. In this disclosure, the term "terminal" refers to either one terminal or both terminals. When distinguishing between these, they can be expressed as, for example, "single vinyl end" and "double vinyl end".

[0045] The amount of unsaturated organopolysiloxane in the first agent can be 5.0% by mass or more, 10% by mass or more, 20% by mass or more, 25% by mass or more, 30% by mass or more, 35% by mass or more, or 40% by mass or more, relative to the entire first agent, and can be 90% by mass or less, 85% by mass or less, 80% by mass or less, 75% by mass or less, 70% by mass or less, 65% by mass or less, 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, or 40% by mass or less.

[0046] When the first agent contains an unsaturated organopolysiloxane having a phenyl group and a vinyl group as the unsaturated organopolysiloxane, the amount of the unsaturated organopolysiloxane having a phenyl group and a vinyl group may be 40% by mass or more, 50% by mass or more, 60% by mass or more, 70% by mass or more, 80% by mass or more, or 90% by mass or more, relative to the total amount of the unsaturated organopolysiloxane, from the viewpoints of compatibility with the oil-soluble UV absorber, UV protection performance, etc., and may be 100% by mass or less or less than 100% by mass.

[0047] (First hydride-functionalized polysiloxane) The first hydride-functionalized polysiloxane is not particularly limited, and examples thereof include polysiloxanes having a hydride-functionalized moiety, such as compounds of the following formula 1. The first hydride-functionalized polysiloxanes can be used alone or in combination of two or more types:

[0048] In formula 1, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ are each independently hydrogen, C １－２０ Alkyl, C ２－２０ Alkenyl, C ５－１０ aryl, hydroxyl, or C １－２０ alkoxy, and m and n are each independently an integer from 10 to 6,000. １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ At least one of is hydrogen.

[0049] In some embodiments, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ, R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ At least one of these is hydrogen, and the rest are C １－２０ It is alkyl.

[0050] In some embodiments, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ At least two of the groups are hydrogen (eg, two Si—H units per functionalized hydridopolysiloxane molecule).

[0051] In other embodiments, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ At least three of the groups are hydrogen (eg, three Si—H units per functionalized hydridopolysiloxane molecule).

[0052] In some embodiments, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ at least two of which are hydrogen (e.g., two Si—H units per functionalized hydridopolysiloxane molecule), and the remainder are C １－２０ It is alkyl.

[0053] In other embodiments, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R６ｂ , R ７ｂ , R ８ｂ , R ９ｂ and R １０ｂ at least three of which are hydrogen (e.g., three Si—H units per functionalized hydridopolysiloxane molecule), and the remainder are C １－２０ It is alkyl.

[0054] In some embodiments, R ４ｂ , R ５ｂ , R ９ｂ and R １０ｂ at least two of which are hydrogen (e.g., two Si—H units per functionalized hydridopolysiloxane molecule), and the remainder are C １－２０ It is alkyl.

[0055] In other embodiments, R ４ｂ , R ５ｂ , R ９ｂ and R １０ｂ at least three of which are hydrogen (e.g., three Si—H units per functionalized hydridopolysiloxane molecule), and the remainder are C １－２０ It is alkyl.

[0056] In some embodiments, the sum of m and n is an integer from 10 to 1,300, from 10 to 1,100, from 10 to 600, from 15 to 500, from 15 to 400, from 20 to 300, from 20 to 200, from 25 to 100, from 25 to 75, from 30 to 50, or from 40 to 45.

[0057] In some embodiments, the first hydride-functionalized polysiloxane may include a non-terminally and / or terminally hydrogenated organopolysiloxane, which is composed of one or more organopolysiloxanes having at least two Si—H units in the molecule, preferably one or more organopolysiloxanes having an average of at least two Si—H units and having a viscosity of 2 to 100,000 cst at 25° C.

[0058] In one embodiment, the organopolysiloxane having Si—H units may contain such Si—H units in terminal units of the polymer, in non-terminal monomer units of the polymer, or a combination thereof. Among these, it is preferable that the Si—H units are contained in non-terminal monomer units of the polymer. In this case, the first hydride-functionalized polysiloxane may be alkyl-terminated. For example, in Formula 1, R ２ｂ and R ７ｂ One or both of １－２０ It may also be alkyl.

[0059] In one embodiment, in Formula 1, R １ｂ , R ２ｂ , R ３ｂ , R ６ｂ , R ７ｂ and R ８ｂ One, two, three, four, five or six of １－２０ It may also be alkyl.

[0060] In one embodiment, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ and R １０ｂ are C １－２０ Alkyl, for example, C １ alkyl (e.g., methyl), and R ９ｂ may be hydrogen.

[0061] In one embodiment, R １ｂ , R ２ｂ , R ３ｂ , R ４ｂ , R ５ｂ , R ６ｂ , R ７ｂ , R ８ｂ and R ９ｂ are C １－２０ Alkyl, for example, C １ alkyl (e.g., methyl), and R １０ｂ may be hydrogen.

[0062] In some embodiments, the Si—H-containing monomer units in the organopolysiloxane may be separated, on average, by at least 1 monomer unit, at least 2 monomer units, at least 5 monomer units, at least 10 monomer units, at least 20 monomer units, at least 40 monomer units, at least 200 monomer units, at least 400 monomer units, at least 1,000 monomer units, or at least 2,000 monomer units.

[0063] In certain embodiments, the Si—H content of the organopolysiloxane having Si—H units can be 0.10 mmol / g or more, 0.50 mmol / g or more, 1.0 mmol / g or more, 2.0 mmol / g or more, 3.0 mmol / g or more, or 4.0 mmol / g or more, and can be 20 mmol / g or less, 10 mmol / g or less, 9.0 mmol / g or less, 8.0 mmol / g or less, 7.0 mmol / g or less, 6.0 mmol / g or less, or 5.0 mmol / g or less. The approximate molar amount of Si—H units in the organopolysiloxane can be calculated based on the average molecular weight of the organopolysiloxane.

[0064] In one embodiment, the first hydride-functionalized polysiloxane can have a viscosity of 2 to 500,000 cst at 25° C. The lower limit of the viscosity is preferably 3 cst or more, 4 cst or more, 5 cst or more, 10 cst or more, 12 cst or more, 15 cst or more, 20 cst or more, 25 cst or more, or 30 cst or more, and more preferably 40 cst or more. The upper limit of the viscosity is preferably 200,000 cst or less, 100,000 cst or less, 50,000 cst or less, 20,000 cst or less, 10,000 cst or less, 5,000 cst or less, 2,000 cst or less, or 1,000 cst or less, and more preferably 500 cst or less. The viscosity of the hydride-functionalized polysiloxane is particularly preferably in the range of 45 to 100 cst, or 45 to 50 cst at 25°C.

[0065] In some embodiments, the hydride-functionalized polysiloxane can have an average molecular weight of 400 to 500,000 Da, with the lower limit of such average molecular weight being preferably at least 500 Da, at least 800 Da, at least 900 Da, at least 1,000 Da, at least 1,200 Da, at least 1,400 Da, at least 1,600 Da, at least 1,800 Da, at least 2,000 Da, or at least 2,200 Da, and more preferably at least 2,300 Da. The upper limit of the average molecular weight is preferably 250,000 Da or less, 140,000 Da or less, 100,000 Da or less, 72,000 Da or less, 62,700 Da or less, 60,000 Da or less, 50,000 Da or less, 49,500 Da or less, 36,000 Da or less, 28,000 Da or less, 25,000 Da or less, 20,000 Da or less, 15,000 Da or less, 10,000 Da or less, 5,000 Da or less, or 4,000 Da or less, and more preferably 2,500 Da or less.

[0066] The first hydride-functionalized polysiloxane may be, but is not limited to, at least one selected from the group consisting of hydride-terminated polydimethylsiloxane, hydride-terminated polyphenyl-(dimethylhydrosiloxy)siloxane, hydride-terminated methylhydrosiloxane-phenylmethylsiloxane copolymer, trimethylsiloxy-terminated methylhydrosiloxane-dimethylsiloxane copolymer, polymethylhydrosiloxane, trimethylsiloxy-terminated polyethylhydrosiloxane, triethylsiloxane, methylhydrosiloxane-phenyloctylmethylsiloxane copolymer, and methylhydrosiloxane-phenyloctylmethylsiloxane terpolymer. Among these, hydride-terminated polydimethylsiloxane is preferred, and hydrogen dimethicone is more preferred.

[0067] The amount of the first hydride-functionalized polysiloxane in the first agent is not particularly limited, and can be, for example, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, or 4.5% by mass or more, relative to the entire first agent, and can be 50% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, 8.0% by mass or less, or 5.0% by mass or less.

[0068] The second agent constituting the apply-type film-forming agent of the present disclosure contains a catalyst that crosslinks the crosslinkable component in the first agent described above. The second agent of the present disclosure may also contain the unsaturated organopolysiloxane having phenyl groups and vinyl groups described above.

[0069] (Catalyst) The catalyst is not particularly limited, and may be, for example, any substance capable of causing, promoting, or initiating a physical and / or chemical crosslinking reaction of the unsaturated organopolysiloxane and hydride-functionalized polysiloxane, which are crosslinkable reactive components constituting the coating. The catalyst may or may not undergo permanent physical and / or chemical changes during or at the end of the process.

[0070] Examples of catalysts include, but are not limited to, metal catalysts that can initiate and / or accelerate crosslinking at or below body temperature, such as Group VIII metal catalysts, for example, platinum catalysts, rhodium catalysts, palladium catalysts, cobalt catalysts, nickel catalysts, ruthenium catalysts, osmium catalysts, and iridium catalysts, and Group IVA metal catalysts, for example, germanium catalysts and tin catalysts. Of these, platinum catalysts, rhodium catalysts, and tin catalysts are preferred. The catalysts can be used alone or in combination.

[0071] Platinum catalysts include, for example, platinum carbonylcyclovinylmethylsiloxane complexes, platinum divinyltetramethyldisiloxane complexes, platinum cyclovinylmethylsiloxane complexes, platinum octanaldehyde / octanol complexes, and other Pt(0) catalysts such as Karstedt's catalyst, platinum-alcohol complexes, platinum-alkoxide complexes, platinum-ether complexes, platinum-aldehyde complexes, platinum-ketone complexes, platinum-halogen complexes, platinum-sulfur complexes, platinum-nitrogen complexes, platinum-phosphorus complexes, platinum-carbon double bond complexes, platinum-carbon triple bond complexes, platinum-imido complexes, platinum-amide complexes, platinum-ester complexes, platinum-phosphate ester complexes, platinum-thiol ester complexes, platinum lone pair complexes, platinum-aromatic complexes, platinum π-electron complexes, and combinations thereof. Among these, at least one selected from the group consisting of platinum carbonylcyclovinylmethylsiloxane complex, platinum divinyltetramethyldisiloxane complex, platinum cyclovinylmethylsiloxane complex, and platinum octanaldehyde / octanol complex is preferred.

[0072] Rhodium catalysts include, for example, tris(dibutylsulfide)rhodium trichloride and rhodium trichloride hydrate.

[0073] Examples of tin catalysts include tin(II) octoate, tin(II) neodecanoate, dibutyltin diisooctylmaleate, di-n-butylbis(2,4-pentanedionate)tin, di-n-butylbutoxychlorotin, dibutyltin dilaurate, dimethyltin dineodecanoate, tin dimethylhydroxy(oleate), and tin(II) oleate.

[0074] Among these catalysts, platinum catalysts are more preferred, and platinum divinyltetramethyldisiloxane complexes (sometimes referred to as "platinum divinyldisiloxanes") are particularly preferred.

[0075] The amount of catalyst blended in the second agent is not particularly limited and may be appropriately adjusted depending on the required coating performance, etc. For example, the amount of catalyst blended may be 0.001% by mass or more, 0.005% by mass or more, or 0.010% by mass or more, and may be 5.0% by mass or less, 3.0% by mass or less, 1.0% by mass or less, 0.10% by mass or less, or 0.050% by mass or less, relative to the total amount of the second agent.

[0076] The dosage form of the second agent of the present disclosure is not particularly limited, and may be, for example, a single-phase system constituted of an oil phase in an anhydrous form, a non-emulsified oil-in-water or water-in-oil two-phase system, or a two-phase system constituted in the form of an oil-in-water emulsion composition or a water-in-oil emulsion composition.

[0077] These formulations can be prepared by conventional methods using a catalyst and, optionally, known materials such as oil, emulsifier, and water, as described below.In addition, silicone oil can be used as the oil, and the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane that can be used in the first agent described above can also be used as this silicone oil.In this case, in order to distinguish from the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane in the first agent, the unsaturated organopolysiloxane and the hydride-functionalized polysiloxane in the second agent can be referred to as the second unsaturated organopolysiloxane and the second hydride-functionalized polysiloxane.

[0078] In one embodiment, the second unsaturated organopolysiloxane, particularly the unsaturated organopolysiloxane other than the unsaturated organopolysiloxane having a phenyl group and a vinyl group, can have a viscosity of 50 to 165,000 cst at 25°C. The upper limit of this viscosity is preferably 150,000 cst or less, 100,000 cst or less, 80,000 cst or less, 50,000 cst or less, 30,000 cst or less, or 10,000 cst or less, and particularly preferably 5,000 cst or less, 2,000 cst or less, or 1,000 cst or less, and most preferably 500 cst or less. The lower limit of this viscosity is preferably 70 cst or more, 100 cst or more, 130 cst or more, or 150 cst or more.

[0079] <Oil-Soluble UV Absorber> In the apply-type film-forming agent of the present disclosure, at least the first and / or second agent containing an unsaturated organopolysiloxane having a phenyl group and a vinyl group contains an oil-soluble UV absorber. Here, when the unsaturated organopolysiloxane having a phenyl group and a vinyl group is contained in, for example, only one of the first or second agents, an oil-soluble UV absorber may or may not be blended with the agent that does not contain such an unsaturated organopolysiloxane. Also, when the unsaturated organopolysiloxane having a phenyl group and a vinyl group is contained in both the first and second agents, the oil-soluble UV absorber only needs to be contained in at least one of the first and second agents. Therefore, in the present disclosure, the phrase "the first and second agents containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contain an oil-soluble UV absorber" means that the oil-soluble UV absorber is contained in at least one of the first and second agents. The oil-soluble UV absorbers can be used alone or in combination of two or more. In the present disclosure, the term "oil-soluble" refers to the ability to dissolve in the oil in the first agent and / or the second agent in which the UV absorber is blended.

[0080] Among oil-soluble UV absorbers, UV absorbers with an IOB of 0.10 or more are preferred from the viewpoints of compatibility with unsaturated organopolysiloxanes having phenyl groups and vinyl groups, and UV protection performance. The IOB value of such UV absorbers can be, for example, 0.10 or more, 0.11 or more, 0.12 or more, or 0.13 or more, and can be 0.50 or less, 0.45 or less, or 0.40 or less. Here, the IOB value is an abbreviation for Inorganic / Organic Balance (inorganic / organic ratio), and is a value representing the ratio of inorganic value to organic value, and is an index indicating the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. The "inorganic value" and "organic value" are set according to the type of atom or functional group, such as 20 for one carbon atom in a molecule and 100 for one hydroxyl group. The IOB value of an organic compound can be calculated by integrating the "inorganic values" and "organic values" of all atoms and functional groups in the organic compound (see, for example, "Organic Conceptual Diagram - Fundamentals and Applications" by Yoshio Koda, pp. 11-17, Sankyo Publishing, 1984).

[0081] Examples of UV absorbers with an IOB of 0.10 or greater include organic UV absorbers such as ethylhexyl methoxycinnamate, octocrylene, polysilicone-15, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, bisethylhexyloxyphenol methoxyphenyl triazine, diethylaminohydroxybenzoyl hexyl benzoate, oxybenzone-3, methylene bisbenzotriazolyl tetramethylbutylphenol, homosalate, ethylhexyl salicylate (sometimes referred to as "octyl salicylate"), cresyl methoxycinnamate, drometrizole trisiloxane, and phenylene bis-diphenyl triazine. Among these, from the viewpoints of compatibility with unsaturated organopolysiloxanes having phenyl and vinyl groups, and UV protection performance, at least one selected from the group consisting of octocrylene, t-butyl methoxydibenzoylmethane, homosalate, and ethylhexyl salicylate is preferred.

[0082] The amount of the oil-soluble UV absorber to be blended is not particularly limited, and can be appropriately blended depending on the required UV protection performance. The amount of the oil-soluble UV absorber to be blended can be, for example, 1.0 mass% or more, 3.0 mass% or more, 5.0 mass% or more, 7.0 mass% or more, 10 mass% or more, 13 mass% or more, 15 mass% or more, 17 mass% or more, or 20 mass% or more relative to the total of the first or second agent, and can be 40 mass% or less, 37 mass% or less, 35 mass% or less, 33 mass% or less, 30 mass% or less, or 25 mass% or less.

[0083] <Optional Components> The paint-on film-forming agent of the present disclosure can contain various components in the first and / or second parts as appropriate, provided that the effects of the present disclosure are not adversely affected. These optional components can also be added to the first and / or second parts containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group. The optional components can be used alone or in combination of two or more.

[0084] The optional components are not particularly limited, and examples thereof include feel modifiers, tack modifiers, spreadability enhancers, diluents, adhesion modifiers, oils, emulsifiers (surfactants), inorganic particles, organic particles, water, humectants, preservatives, coloring materials (e.g., pigments, dyes, and colorants), pearling agents, matting agents, beads, cloth, rubber materials (e.g., rubber sheets made of silicone rubber, etc.), components that thicken the aqueous or oil phase (thickeners), protective colloids, skin permeation enhancers, optical modifiers, scattering agents, adsorbents, magnetic materials, gas transport modifiers, liquid transport modifiers, pH modifiers, sensitization modifiers, and aesthetic modifiers.

[0085] Other examples of the skin-soothing agents include moisturizers, skin protectants, skin soothing agents, skin whitening agents, skin brighteners, skin emollients, skin smoothing agents, skin bleaching agents, skin exfoliating agents, skin tightening agents, beauty agents, vitamins, antioxidants, cell signaling agents, cell regulating agents, cell interacting agents, skin tanning agents, anti-aging agents, anti-wrinkle agents, spot reducers, alpha-hydroxy acids, beta-hydroxy acids, and cosmetic agents such as ceramides; and also include pain relievers, analgesics, anti-pruritics, anti-acne agents (e.g., beta-hydroxy acids, salicylic acid, benzoyl peroxide), anti-inflammatory agents, ... Included are therapeutic agents such as histamines, corticosteroids, NSAIDs (nonsteroidal anti-inflammatory drugs), antiseptics, antibiotics, antibacterials, antifungals, antivirals, antiallergics, anti-irritants, insect repellents, phototherapy agents, blood clotting agents, antineoplastic agents, immune system enhancers, immune system suppressants, coal tar, anthralin, fluocinonide, methotrexate, cyclosporine, pimecrolimus, tacrolimus, azathioprine, fluorouracil, ceramides, counterirritants, and skin cooling compounds; and also, for example, antioxidants, vitamins, vitamin D ３ These may include analogs, retinoids, minerals, mineral oil, petrolatum, fatty acids, plant extracts, polypeptides, antibodies, proteins, sugars, humectants, and emollients.

[0086] Some of the main optional ingredients will now be described in detail below.

[0087] (Oils) Examples of oils include liquid oils, solid oils, waxes, hydrocarbon oils, ester oils, silicone oils, and polar oils other than the oil-soluble UV absorbers described above. The oils may be non-volatile or volatile. Oils may be used alone or in combination. Here, "volatile" refers to oils that exhibit a volatile content of more than 5% when left at 105°C under atmospheric pressure for 3 hours. Such volatile content can also be defined as 10% or more, 20% or more, 40% or more, 50% or more, 60% or more, 80% or more, or 100%. Alternatively, the boiling point at 1 atmosphere (101.325 kPa) can be used as an indicator of volatility. This boiling point can be 250°C or less, 240°C or less, or 230°C or less, or 80°C or more, 100°C or more, 120°C or more, 150°C or more, or 160°C or more. In addition, in the present disclosure, "non-volatile" refers to a material that exhibits a volatile content of 5% or less when left at 105°C for 3 hours.

[0088] For example, silicone oils other than the above-mentioned unsaturated organopolysiloxanes and hydride-functionalized polysiloxanes can be used as the silicone oil. Examples of such silicone oils include linear silicones such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, and methylhydrogenpolysiloxane; and cyclic silicones such as diphenylsiloxyphenyltrimethicone, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Silicone oils are easily compatible with unsaturated organopolysiloxanes having phenyl groups and vinyl groups, and can therefore be suitably incorporated into the first and / or second agents containing unsaturated organopolysiloxanes having phenyl groups and vinyl groups.

[0089] The amount of oil (e.g., silicone oil) blended is not particularly limited and can be appropriately blended depending on, for example, the type of formulation used, the required film strength, etc. The amount of oil (e.g., silicone oil) blended can be, for example, 5.0% by mass or more, 7.0% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 23% by mass or more, 25% by mass or more, 27% by mass or more, or 30% by mass or more relative to the entire first or second agent, and can be 60% by mass or less, 57% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 25% by mass or less, or 20% by mass or less.

[0090] (Inorganic Particles) At least one of the first and second agents in the paint-on film-forming agent of the present disclosure may contain inorganic particles. In particular, blending inorganic particles with the first and / or second agents containing an unsaturated organopolysiloxane having phenyl and vinyl groups and an oil-soluble UV absorber can further improve UV protection performance. The inorganic particles can be used alone or in combination of two or more types.

[0091] From the viewpoint of further improving UV protection performance, the inorganic particles are preferably inorganic oxide particles. As the inorganic particles, only hydrophobized particles (hydrophobic inorganic particles) or only untreated particles (e.g., hydrophilic inorganic particles) may be used, or hydrophobized particles (hydrophobic inorganic particles) and untreated particles (e.g., hydrophilic inorganic particles) may be used in combination.

[0092] Examples of inorganic oxides constituting the inorganic oxide particles include zinc oxide, titanium oxide, aluminum oxide, and silicon oxide (e.g., fumed silica and anhydrous silica). Among these, from the viewpoint of further improving UV protection performance, at least one selected from the group consisting of silicon oxide, titanium oxide, and zinc oxide is preferred, and silicon oxide is more preferred.

[0093] The hydrophobic inorganic particles (hydrophobic inorganic particles) can typically be inorganic particles that have been hydrophobized with a surface treatment agent. The hydrophobization treatment is not particularly limited, and examples thereof include at least one treatment selected from the group consisting of silylation treatment, dimethylsilylation treatment, and trimethylsilylation treatment.

[0094] From the viewpoint of further improving UV protection performance, the blending amount of inorganic particles (e.g., inorganic oxide particles or hydrophobized inorganic oxide particles) can be, for example, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, 4.5% by mass or more, or 5.0% by mass or more relative to the total of the first agent or the second agent, and can be 20% by mass or less, 15% by mass or less, 10% by mass or less, 7.0% by mass or less, or 5.0% by mass or less.

[0095] (Emulsifier) ​​As the emulsifier, for example, anionic, cationic, amphoteric, or nonionic emulsifiers can be used. The emulsifiers can be used alone or in combination of two or more. Here, the emulsifier in the present disclosure refers to an agent having an emulsifying function (surface activity), and can also include agents generally referred to as surfactants.

[0096] Specifically, the emulsifier may be at least one selected from the group consisting of hydrocarbon surfactants, silicone surfactants, and amphiphilic powders.

[0097] Examples of hydrocarbon surfactants include polyoxyethylene alkyl ethers, polyoxyethylene steryl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid esters, glycol fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, and polyglycerin fatty acid esters.

[0098] Examples of silicone surfactants include polyether-modified silicones and alkyl-co-modified polyether-modified silicones.

[0099] The amount of emulsifier is not particularly limited, and may be, for example, 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, or 0.2% by mass or more relative to the total amount of the first agent or the second agent from the viewpoint of emulsion stability, etc. The upper limit of the amount of emulsifier is not particularly limited, and may be, for example, 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, 1.0% by mass or less, or 0.5% by mass or less.

[0100] (Water) The water is not particularly limited, and for example, water used in cosmetics or quasi-drugs can be used, such as ion-exchanged water, distilled water, ultrapure water, and tap water.

[0101] The amount of water to be added is not particularly limited, and can be adjusted appropriately depending on, for example, the type of formulation to be used.

[0102] <<Method of Using a Coat-in-Type Film-Forming Agent>> The method of using the coat-in-type film-forming agent of the present disclosure is not particularly limited and may include, for example, any of the following steps. Note that, since such a method can also be used to apply makeup to the face, for example, the method can also be referred to as a makeup method. Furthermore, the method of using the coat-in-type film-forming agent of the present disclosure does not include methods of surgery, treatment, or diagnosis of humans: applying a first agent to a target site to form a first agent layer, and then applying a second agent on the first agent layer to form a film, or applying a second agent to a target site to form a second agent layer, and then applying the first agent on the second agent layer to form a film, or mixing the first agent and the second agent to prepare a mixture, and then applying the mixture to the target site to form a film.

[0103] From the viewpoint of obtaining a uniform coating with little unevenness, a preferred method of use is to apply the first agent to the target site to form a first agent layer, and then apply the second agent onto this first agent layer and crosslink it to form a coating. Here, the materials described above can be used for the first agent and the second agent in the same way.

[0104] This method may be performed only once, or may be performed multiple times (e.g., two or more times, or three or more times) on the formed film. When performed multiple times, the method may include, for example, any of the following operations: applying a first agent to the formed film to form a first agent layer, and then applying a second agent on the first agent layer to further form a film, or applying a second agent to the formed film to form a second agent layer, and then applying the first agent on the second agent layer to further form a film, or mixing the first agent and the second agent to prepare a mixture, and then applying the mixture to the formed film to further form a film.

[0105] In some embodiments, a cosmetic may be applied to the target area before applying the first agent, the second agent, or a mixture containing the first agent and the second agent to the target area; a first agent may be applied to the target area to form a first agent layer, a cosmetic may be applied on the first agent layer, and then the second agent may be applied to cover the cosmetic; a second agent may be applied to the target area to form a second agent layer, a cosmetic may be applied on the second agent layer, and then the first agent may be applied to cover the cosmetic; or a film may be formed, and then a cosmetic may be applied to the film.

[0106] The cosmetic is not particularly limited, and examples thereof include skin care cosmetics such as serum, lotion, and emulsion, sunscreen cosmetics (sunscreen cosmetics), base cosmetics, or makeup cosmetics such as foundation, gloss, lipstick, eye shadow, and nail polish, or cosmetics that combine two or more of the functions of these cosmetics.

[0107] In some embodiments, the method of using the topical film-forming agent of the present disclosure can also be used as a cosmetic treatment. For example, when skin is exposed to dryness, moisture is unknowingly lost, and the stratum corneum on the skin surface may not be able to maintain its moisture content. When the skin lacks moisture, it is unable to effectively produce the moisturizing components (natural moisturizing factors (NMFs)) that it produces itself. As a result, the barrier function and moisturizing function of the skin surface are weakened, making the skin more susceptible to damage, which is thought to lead to a loss of moisture and skin roughness.

[0108] On the other hand, for example, when a film made from the applied film-forming agent of the present disclosure is applied to the skin, it can protect the skin from harmful ultraviolet rays and, due to the occlusion effect of the film (the effect of preventing moisture loss from the skin), can effectively moisturize the skin. As a result, for example, the skin's own production of moisturizing ingredients is improved and malfunctions in turnover in the stratum corneum are alleviated, making skin problems such as roughness less likely to occur and improving the cosmetic effect. Note that the term "cosmetic method" refers to applying the applied film-forming agent of the present disclosure to a target site to form a film and improve the condition of the target site (e.g., skin), and is different from methods of surgery, treatment, or diagnosis of humans.

[0109] There are no particular limitations on the method for applying the first or second agent to the target area, the cosmetic application layer, or the first or second agent layer, and for example, methods such as spreading with fingers, spray application, and transfer can be used.

[0110] Furthermore, for example, when the first agent and / or the second agent are separated into water and oil, it is preferable to shake these agents to forcibly form a two-phase system (oil-in-water type or water-in-oil type) from the viewpoints of the crosslinking reactivity between the first agent and the second agent, the dispersibility of the oil-soluble UV absorber in the coating, and the like.

[0111] The topical film-forming agent of the present disclosure can be applied to any part of the body, for example, the surface of the skin. The topical film-forming agent of the present disclosure can be appropriately applied to, for example, the head (e.g., scalp), face (e.g., lips, eyes, nose, cheeks, forehead), neck, ears, hands, arms, legs, feet, chest, abdomen, back, buttocks, nails, and body hair (e.g., hair, eyelashes, eyebrows, beard).

[0112] <Kit Including a Coating-Type Film-Forming Agent> The coating-type film-forming agent of the present disclosure can be provided as a kit including the first and second agents that constitute the coating agent. In addition to the first and second agents, the kit may also include optional components such as components that facilitate application of the first agent to the target site, or the various cosmetics described above, or the kit may be used in combination with optional components.

[0113] Examples of optional components include an instruction manual, a spatula-shaped applicator, a brush, a cotton swab, a cutter, scissors, the various cosmetics described above, a remover for removing the formed film from the target site, a mirror, etc. Here, the "instruction manual" can include not only a general instruction manual attached in the form of a document to the kit, but also, for example, an instruction manual printed on a packaging container that contains the kit or a packaging container such as a tube for injecting the first agent, etc.

[0114] In some embodiments, the kit may be configured so that the first and second agents are not in contact with each other, for example, by containing the first and second agents in separate containers or in separate compartments of a container having two or more compartments, and the contained agents may be configured to be applied one at a time or to be mixed together before or at the time of use.

[0115] In one embodiment, the kit can be used in combination with a remover for removing the formed film from the target site. Here, "use in combination" includes using the kit and the remover as an integrated unit, i.e., including the remover in the kit, or using the kit and the remover separately. For example, since it is possible to provide a spreadable film-forming agent and remover that are optimal for each individual, it is preferable to use a kit including a spreadable film-forming agent in combination with a separate remover.

[0116] <Remover> The film formed on the target site by the applied film-forming agent of the present disclosure can be suitably removed from the target site using the specific remover shown below. When the specific remover of the present disclosure is used, the strength of the film is not reduced, so the film can be peeled off from the target site in one go without breaking. For example, when removing conventional sunscreen cosmetics from the skin after application, it is necessary to wash them off with a cleanser or the like. In contrast, the film formed by the applied film-forming agent of the present disclosure does not require such work, and the film exhibiting UV protection performance can be more easily peeled off from the target site (e.g., skin).

[0117] In some embodiments, a remover suitable for use in removing a film formed by the paint-on film-forming agent of the present disclosure contains at least one oil selected from the group consisting of a hydrocarbon oil having a weight-average molecular weight of 300 or more and 800 or less, and a polar oil having a weight-average molecular weight of 260 or more and 400 or less. From the viewpoint of effectively removing the film, it is preferable to use such a hydrocarbon oil and a polar oil in combination.

[0118] (Hydrocarbon Oil) From the viewpoint of suitably removing the film, the weight average molecular weight of the hydrocarbon oil is preferably 320 or more or 350 or more, and more preferably 380 or more, and is preferably 750 or less or 700 or less, and more preferably 690 or less. The hydrocarbon oils may be used alone or in combination of two or more kinds.

[0119] The type of hydrocarbon oil is not particularly limited, and examples thereof include liquid paraffin (mineral oil), olefin oligomers and hydrogenated products thereof (for example, hydrogenated polydecene), and squalane.

[0120] The amount of hydrocarbon oil blended is not particularly limited, and from the viewpoint of effectively removing the film, it can be, for example, 1.0 mass% or more, 5.0 mass% or more, 10 mass% or more, 20 mass% or more, or 30 mass% or more relative to the total amount of the composition constituting the remover. The upper limit of the blended amount is not particularly limited, and can be, for example, 100 mass% or less, less than 100 mass%, 80 mass% or less, 70 mass% or less, 60 mass% or less, or 50 mass% or less.

[0121] (Polar Oil) From the viewpoint of favorable film removal, the weight average molecular weight of the polar oil is preferably 265 or more or 270 or more, and preferably 390 or less, 380 or less, or 370 or less. From the viewpoint of favorable film removal, the IOB value of the polar oil is preferably 0.12 or more or 0.13 or more, and preferably 1.48 or less, 1.47 or less, or 1.46 or less. The polar oils can be used alone or in combination of two or more.

[0122] The type of polar oil is not particularly limited, and examples thereof include ester oils, such as isopropyl myristate (IOB value = 0.18), ethylhexyl ethylhexanoate (IOB value = 0.20), alkyl (C12-15) benzoate (IOB value = 0.18), diethylhexyl succinate (IOB value = 0.32), neopentyl glycol diheptanoate (IOB value = 0.33), caprylic / capric triglyceride (IOB value = 0.28), PPG-3 dipivalate (IOB value = 1.46), and octyl palmitate (IOB value = 0.13).

[0123] The amount of polar oil is not particularly limited, and for example, from the viewpoint of favorable removal of the film, it can be 1.0 mass% or more, 5.0 mass% or more, 10 mass% or more, 15 mass% or more, or 20 mass% or more relative to the total amount of the composition constituting the remover. The upper limit of the amount is not particularly limited, and can be, for example, 100 mass% or less, less than 100 mass%, 80 mass% or less, 70 mass% or less, 60 mass% or less, or 50 mass% or less.

[0124] (Optional Components) The remover of the present disclosure can be appropriately blended with various components as long as they do not adversely affect the film removal effect. Examples of various components include surfactants (emulsifiers), moisturizers, thickeners, water-soluble polymers, oil-soluble polymers, film-forming agents, higher fatty acids, sequestering agents, lower alcohols, higher alcohols, polyhydric alcohols, denatured alcohols, various extracts, sugars, amino acids, organic amines, polymer emulsions, chelating agents, UV absorbers, pH adjusters, skin nutrients, vitamins, water-soluble agents applicable to pharmaceuticals, quasi-drugs, cosmetics, etc., buffers, anti-fading agents, antioxidants, preservatives, dispersants, propellants, fillers, pigments, dyes, colorants, fragrances, water, and other oils other than those mentioned above. The optional components can be used alone or in combination of two or more.

[0125] The remover of the present disclosure may contain oils other than the above-mentioned hydrocarbon oils and polar oils.However, silicone oils may reduce the strength of the film, and as a result, may reduce the film removal performance.Therefore, from the viewpoint of effectively removing the film, the blending amount of silicone oil is preferably 10 mass % or less, 5.0 mass % or less, 1.0 mass % or less, 0.5 mass % or less, or 0.1 mass % or less relative to the total amount of the composition constituting the remover, and more preferably, silicone oil is not contained in the composition constituting the remover.

[0126] <Method of Using Remover> There are no particular limitations on how the remover can be used. In general, the remover can be applied to part or all of the film formed on the target area and then optionally rubbed. The film can then be removed by pulling it off with the fingers or the like.

[0127] <<Film>> <Thickness>> The thickness of the film formed using the above-described application-type film-forming agent of the present disclosure is not particularly limited and can be appropriately adjusted taking into consideration, for example, UV protection performance, breathability, invisibility, occlusion to the target site (e.g., skin), aesthetics, etc. The film thickness can be, for example, 0.5 μm or more, 1 μm or more, 10 μm or more, 30 μm or more, or 40 μm or more. There is no particular limit on the upper limit of the thickness, but it can be, for example, 150 μm or less, 100 μm or less, 90 μm or less, 80 μm or less, 70 μm or less, 60 μm or less, or 50 μm or less. Here, the thickness can be defined as the average value calculated by measuring the thickness of any portion of the film five times using a high-precision digimatic micrometer (MDH-25MB, manufactured by Mitutoyo Corporation).

[0128] <UV Protection Performance> Films formed using the above-described apply-type film-forming agent of the present disclosure can exhibit excellent UV protection performance (UV absorption ability). Such performance can be evaluated by the rate of improvement in UV protection performance calculated using the integrated absorbance value described below. The films of the present disclosure can exhibit an improvement rate of more than 130%, 135% or more, 140% or more, 143% or more, 145% or more, 147% or more, or 150% or more. The upper limit of such an improvement rate can be, for example, 250% or less, 230% or less, or 200% or less.

[0129] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these. Hereinafter, unless otherwise specified, the blending amounts are expressed in mass %. Furthermore, the evaluation methods described in the examples are not limited to the forming agents and films formed by the forming agents described in the examples, but can also be used for the above-mentioned forming agents and films formed by the forming agents.

[0130] <Evaluation Tests> The following tests were carried out using the test samples obtained by the manufacturing methods described below. The results are shown in Table 2.

[0131] <Film Formation Test> The first and second agents of the test sample were applied to the back of the hand in that order, and after 5 minutes, the applied area was touched with a finger to check whether a film that would not peel off when touched with a finger had formed. In the table, if such a film was formed, it was marked as "pass," and if such a film was not formed, it was marked as "fail."

[0132] <UV Protection Test> The first agent of the test sample was applied to a measurement plate (S plate) (5 x 5 cm V-groove PMMA plate, SPFMASTER-PA01) at a concentration of 1 mg / cm. ２ The amount of the second agent of the test sample was dropped onto the surface of the test piece and spread evenly with a finger to form a first agent layer. ２ The amount of the solution was dropped onto the plate and spread evenly with a finger to form a film. The absorbance of the formed film was measured using a Hitachi U-3500 model recording spectrophotometer. An uncoated plate was used as a control. The absorbance (Abs) was calculated using the following formula 2, and the measured values ​​from 280 nm to 400 nm were integrated to obtain the integrated absorbance value: Abs = -log(T / To) Formula 2 T: transmittance of the sample, To: transmittance of the uncoated plate

[0133] From the obtained integrated absorbance values ​​of the samples, the improvement rate of UV protection performance relative to the control sample was calculated using the following formula 3. Note that the higher the improvement rate, the better the UV protection performance. The sample of Comparative Example 4 was used as the control sample. The sample of Comparative Example 1 did not contain a UV absorber, and the samples of Comparative Examples 2 and 3 were unable to form a film, so the UV protection test was not performed: Improvement rate of UV protection performance (%) = [integrated absorbance value of sample] / [integrated absorbance value of control sample] × 100 ... formula 3

[0134] Test Example Each test sample in this test example was prepared according to the following method. In this test example, the influence of an oil-soluble UV absorber on an unsaturated organopolysiloxane having phenyl groups and vinyl groups was investigated. The results are shown in Table 2. In Table 2, "Mw" refers to the weight average molecular weight, and "moles of phenyl groups / moles of vinyl groups" refers to the moles of phenyl groups relative to the moles of vinyl groups in the unsaturated organopolysiloxane having phenyl groups.

[0135] Comparative Example 1 (First Agent) A first agent was prepared by uniformly mixing 24.3 parts by mass of vinyl dimethicone having a viscosity of 165,000 cst as the first unsaturated organopolysiloxane, 4.7 parts by mass of hydrogen dimethicone as the first hydride-functionalized polysiloxane, and 71.0 parts by mass of volatile dimethicone.

[0136] (Second Agent) The ingredients in Table 1 were mixed uniformly to prepare a second agent.

[0137]

[0138] Examples 1 to 9 and Comparative Examples 2 to 8 First agents were prepared in the same manner as in Comparative Example 1, except that the components and their amounts in the first agent were changed to those shown in Table 2. The same second agent as in Comparative Example 1 was used.

[0139]

[0140] <Results> As is clear from the results in Table 2, it was found that, for example, Examples 1 to 9, which used an unsaturated organopolysiloxane containing phenyl groups in a specific proportion, had improved UV protection performance compared to Comparative Examples 5 to 7, which used an unsaturated organopolysiloxane that did not contain phenyl groups, and Comparative Example 8, which used an unsaturated organopolysiloxane that did not contain phenyl groups in a specific proportion.

Claims

1. A coating-type film-forming agent comprising a first agent containing a crosslinking reactive component that constitutes a coating, and a second agent containing a catalyst that crosslinks the crosslinking reactive component, wherein the first agent and / or the second agent contain an unsaturated organopolysiloxane having a phenyl group and a vinyl group, and the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contain an oil-soluble ultraviolet absorber, and the unsaturated organopolysiloxane having a phenyl group and a vinyl group has a ratio of the number of moles of the phenyl group to the number of moles of the vinyl group of 0.40 or less.

2. The forming agent according to claim 1, wherein the first agent comprises at least one selected from the group consisting of a first unsaturated organopolysiloxane and a first hydride-functionalized polysiloxane; when the first agent comprises only the first unsaturated organopolysiloxane among the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent comprises the second hydride-functionalized polysiloxane; when the first agent comprises only the first hydride-functionalized polysiloxane among the first unsaturated organopolysiloxane and the first hydride-functionalized polysiloxane, the second agent comprises the second unsaturated organopolysiloxane; and at least one of the first unsaturated organopolysiloxane and the second unsaturated organopolysiloxane comprises the unsaturated organopolysiloxane having a phenyl group and a vinyl group.

3. The forming agent according to claim 1 or 2, wherein the oil-soluble ultraviolet absorber comprises an ultraviolet absorber having an IOB of 0.10 or more.

4. The forming agent according to claim 1 or 2, wherein the first agent comprises the unsaturated organopolysiloxane having a phenyl group and a vinyl group and the oil-soluble ultraviolet absorber.

5. The forming agent according to claim 1 or 2, wherein the unsaturated organopolysiloxane having phenyl groups and vinyl groups has a ratio of the number of moles of phenyl groups to the number of moles of vinyl groups of 0.0040 or more.

6. The forming agent according to claim 1 or 2, wherein the weight average molecular weight of the unsaturated organopolysiloxane having a phenyl group and a vinyl group is 100,000 or less.

7. The forming agent according to claim 1 or 2, wherein the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains a silicone oil.

8. The forming agent according to claim 1 or 2, wherein the first agent and / or the second agent containing the unsaturated organopolysiloxane having a phenyl group and a vinyl group contains inorganic particles.

9. The forming agent according to claim 1 or 2, wherein the unsaturated organopolysiloxane having a phenyl group and a vinyl group is at least one member selected from the group consisting of vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer, vinyl-terminated polyphenylmethylsiloxane, and vinylphenylmethyl-terminated vinylphenylsiloxane-phenylmethylsiloxane copolymer.

10. The forming agent of claim 2, wherein the first hydride-functionalized polysiloxane and the second hydride-functionalized polysiloxane are non-terminally and / or terminally hydrogenated organopolysiloxanes.

11. The forming agent of claim 10, wherein the first hydride-functionalized polysiloxane and the second hydride-functionalized polysiloxane are at least one selected from the group consisting of hydride-terminated polydimethylsiloxane, hydride-terminated polyphenyl-(dimethylhydrosiloxy)siloxane, hydride-terminated methylhydrosiloxane-phenylmethylsiloxane copolymer, trimethylsiloxy-terminated methylhydrosiloxane-dimethylsiloxane copolymer, polymethylhydrosiloxane, trimethylsiloxy-terminated polyethylhydrosiloxane, triethylsiloxane, methylhydrosiloxane-phenyloctylmethylsiloxane copolymer, and methylhydrosiloxane-phenyloctylmethylsiloxane terpolymer.

12. The forming agent according to claim 1 or 2, wherein the catalyst is at least one selected from the group consisting of platinum catalysts, rhodium catalysts, and tin catalysts.

13. The forming agent according to claim 12, wherein the catalyst is a platinum catalyst, and the platinum catalyst is at least one selected from the group consisting of platinum carbonylcyclovinylmethylsiloxane complex, platinum divinyltetramethyldisiloxane complex, platinum cyclovinylmethylsiloxane complex, and platinum octanaldehyde / octanol complex.

14. A kit, in which the first and second agents in the forming agent according to claim 1 or 2 are contained in separate containers, or are contained separately in each compartment of a container having two or more compartments.

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