Compositions, cosmetics, two-part compositions, and kits, as well as methods for producing silicone.

Abstract

To provide a composition that can be applied uniformly and has high stability. [Solution] One embodiment of the composition according to the present disclosure is a powdered or solid composition comprising an unsaturated organopolysiloxane and oil-absorbing particles, wherein the unsaturated organopolysiloxane has a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C, and the mass percentage of water is 5% by mass or less.

Description

[Technical Field]

[0001] This disclosure relates to compositions, cosmetics, two-component compositions, and kits, as well as methods for producing silicone. [Background technology]

[0002] Traditionally, there has been a demand for cosmetics with high unevenness correction effects that make skin irregularities such as pores and fine lines, as well as scars, less noticeable and make the skin appear smoother. Therefore, there is a desire for cosmetics such as foundations and primers that have high unevenness correction effects.

[0003] For example, a water-in-oil cosmetic composition for correcting uneven skin texture has been proposed, which is excellent in both concealing and transparency, concealing and making skin irregularities such as pores less noticeable, while simultaneously providing a high intra-skin light propagation effect by allowing more light to pass through the cosmetic film, thereby suppressing the generation of shadows caused by unevenness. This composition contains 1.0 to 3.0% by mass of spherical titanium dioxide with an average particle size of 200 to 400 nm, 0.2 to 1.0% by mass of dimethicone crosspolymer, 0.5 to 2.0% by mass of silica with an average particle size of 10 to 50 nm, 25 to 70% by mass of oil, and water (see Patent Document 1).

[0004] Furthermore, an oily cosmetic has been proposed that, despite having a matte finish, spreads smoothly, has high uniformity, offers excellent makeup retention, and provides excellent moisturizing properties, containing (A) a gel composition of organopolysiloxane elastomer partially or completely crosslinked by vinyl groups, pre-dispersed in an oil, (B) a gel composition of organopolysiloxane elastomer partially or completely crosslinked by oxyethylene groups, pre-dispersed in an oil, (C) 10 to 40% by mass of an oil that is semi-solid at 20°C, (D) aerosolized anhydrous silicic acid, and (E) spherical hollow inorganic powder with an average particle size of 3 to 25 μm and an oil absorption capacity of 80 ml / 100 g (see Patent Document 2).

[0005] Furthermore, organopolysiloxanes having a specific structure containing a hydride group (Si-H group) have been proposed for use in cosmetics and exhibiting excellent makeup longevity (see Patent Document 3). [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2014-129261 [Patent Document 2] Japanese Patent Publication No. 2019-14670 [Patent Document 3] Patent No. 6560151 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] In view of the above, one aspect of the present disclosure aims to provide a composition that can be applied uniformly and has high stability. [Means for solving the problem]

[0008] To solve the above problems, one embodiment of the composition according to the present disclosure is a powdered or solid composition comprising an unsaturated organopolysiloxane and oil-absorbing particles, wherein the unsaturated organopolysiloxane has a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C, and the mass percentage of water is 5% by mass or less. [Effects of the Invention]

[0009] According to one aspect of this disclosure, a composition that can be uniformly applied and has high stability can be provided. [Modes for carrying out the invention]

[0010] The embodiments of this disclosure will be described in detail below. However, the embodiments are not limited to the following description and can be modified as appropriate without departing from the gist of this disclosure. Furthermore, in this specification, the "~" indicating a numerical range means that the numbers before and after it are included as the lower and upper limits, respectively, unless otherwise specified.

[0011] (composition) [Composition according to the first embodiment] The composition according to the first embodiment includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane has, for example, a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C. In the above composition, the mass percentage of water is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition.

[0012] The composition according to the first embodiment may further contain a hydride-functionalized polysiloxane, a catalyst for promoting the reaction between the unsaturated bonds contained in the unsaturated organopolysiloxane and the hydride groups contained in the hydride-functionalized polysiloxane, and water, and may further contain other components such as additives as needed.

[0013] The prior art, for example, the compositions described in Patent Documents 1 to 3, have the problem that they do not adequately satisfy the uniformity and stability of the coating.

[0014] Therefore, the present inventors conducted diligent research and found that a composition comprising an unsaturated organopolysiloxane and oil-absorbing particles, wherein the unsaturated organopolysiloxane has a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C, and the mass percentage of water is 5% by mass or less, can be uniformly applied and is a highly stable composition.

[0015] Normally, compositions containing unsaturated organopolysiloxanes can become sticky. However, according to one aspect when the composition of the composition according to the first embodiment meets the above-described conditions, the oil-absorbing particles are in a state of absorbing oil from the unsaturated organopolysiloxane. Therefore, the above composition is in powder form and exhibits a smooth texture. For example, when the above composition is applied to a surface in the presence of a catalyst to promote the reaction between the unsaturated bonds contained in the hydride-functionalized polysiloxane and the unsaturated organopolysiloxane and the hydride groups contained in the hydride-functionalized polysiloxane, the texture of the composition according to the first embodiment is smooth when applied, and it can be applied uniformly to the surface.

[0016] Furthermore, when a force greater than the holding force of the oil-absorbing particles and / or the adsorption force of the unsaturated organopolysiloxane is applied to the unsaturated organopolysiloxane held by the oil-absorbing particles, the unsaturated organopolysiloxane is released from the oil-absorbing particles. The composition according to the first embodiment contains an unsaturated organopolysiloxane having a specific kinematic viscosity. Therefore, during and / or after application of the composition according to the first embodiment to the coating target, the unsaturated organopolysiloxane can be appropriately released from the oil-absorbing particles. This allows for the favorable formation of a reaction product of the unsaturated organopolysiloxane. The above reaction product is generated, for example, in a crosslinking reaction or hydrosilylation reaction between a hydride-functionalized polysiloxane and an unsaturated organopolysiloxane.

[0017] In this disclosure, "subject," "object to be coated," "object," "object to be coated," and "body" mean an animal or object to which the composition according to the first embodiment is applied.

[0018] In this disclosure, “reactants” include the results of polymerization reactions that occur during crosslinking reactions or interactions of hydrosilylation-reactive components. That is, reactants may have a film-like form that is visible to the naked eye, or a form that is not visible to the naked eye. Although not bound by theory, crosslinking reactions or crosslinking reactions of hydrosilylation-reactive components and the resulting film formation are characterized by a phase transition from a viscous sol state of the mixture to a continuously bonded polymer state, preferably a film state. Crosslinking reactions are also referred to as curing reactions.

[0019] The time from the mixing of crosslinking reactivity to the formation of the reactants can be determined by methods known in the art, for example, by rheological measurements using small-amplitude vibrational shear, or by continuous evaluation of the viscoelasticity of the crosslinking reactivity mixture as it reacts during the crosslinking reaction process. Viscoelasticity can be determined, for example, by evaluating the elastic modulus (G'), viscosity (G''), and loss tangent (tanδ). The time from the mixing of crosslinking reactivity to the formation of the reactants can be determined, for example, by using a rheometer to determine the crossover time between the elastic modulus (G') and viscosity (G'') and the time when the loss tangent (tanδ) is independent of frequency.

[0020] There are no particular restrictions on the time from when the crosslinking reactivity is mixed until the reactant is formed, but examples include within 5 minutes, within 4 minutes, within 3 minutes, within 2 minutes, or within 1 minute. Among these, it is preferable that the time from when the crosslinking reactivity is mixed until the reactant is formed be within 3 minutes, and more preferably between 10 seconds and 3 minutes.

[0021] When the reactant formed by the composition according to the first embodiment is a film, there are no particular restrictions on the film thickness of the reactant, and it can be appropriately selected according to the purpose. For example, the lower limit can be 1 μm or more, 5 μm or more, 10 μm or more, 30 μm or more, 50 μm or more, 70 μm or more, 90 μm or more, 100 μm or more, 110 μm or more, 120 μm or more, 130 μm or more, 140 μm or more, or 150 μm or more. There are also no particular restrictions on the upper limit of the film thickness of the film formed by the composition according to the first embodiment, and it can be 300 μm or less, 250 μm or less, or 200 μm or less. The upper and lower limits of the film thickness of the reactant formed by the composition according to the first embodiment can be appropriately combined, for example, 1 μm to 300 μm, 5 μm to 300 μm, 10 μm to 300 μm, 30 μm to 300 μm, 50 μm to 300 μm, 70 μm to 300 μm, 90 μm to 300 μm, 100 μm to 300 μm, 110 μm to 250 μm, 120 μm to 250 μm, 130 μm to 200 μm, 140 μm to 200 μm, or 150 μm to 200 μm.

[0022] When the composition according to the first embodiment is used as a cosmetic, for example, a face powder or powder foundation, the reactant can typically be applied to the entire face. In this case, if the film is thick, the entire face may feel tight due to the crosslinking shrinkage of the film. Therefore, in such cases, it is preferable to thin the film thickness of the reactant to 30 μm or less, 10 μm or less, or 5 μm or less.

[0023] In this disclosure, the thickness of the film made by the composition according to the first embodiment is defined as the average value calculated by measuring the thickness of any part of the film peeled off from the object to be coated five times using a high-precision digital micrometer (MDH-25MB, manufactured by Mitutoyo Corporation).

[0024] As will be described in detail later, the hydride-functionalized polysiloxane may be included in the composition according to the first embodiment (hereinafter sometimes referred to as "the first composition"), or it may be included in a second composition separate from the first composition. The catalyst may also be included in the first composition, or it may be included in a second composition separate from the first composition, but it is preferable that it be included in the second composition.

[0025] In this disclosure, "first composition" and "second composition" refer to compositions containing components that react with each other, but the numbers are used separately for convenience and do not prescribe an order of application. Therefore, the second composition may be applied on top of the first composition, or the first composition may be applied on top of the second composition, but it is preferable to apply the first composition on top of the second composition.

[0026] <Unsaturated organopolysiloxanes> The kinematic viscosity of the unsaturated organopolysiloxane at 20°C is preferably between 100 cSt and 4,000 cSt, and more preferably between 200 cSt and 3,000 cSt. If the kinematic viscosity of the unsaturated organopolysiloxane at 20°C is less than 100 cSt, the uniformity and stability of the coating will be poor, and stickiness will occur during coating. If the kinematic viscosity of the unsaturated organopolysiloxane at 20°C exceeds 3,000 cSt, the uniformity of the coating will be poor, reactants will not be easily generated, and the film formation rate will decrease. On the other hand, when the kinematic viscosity of the unsaturated organopolysiloxane at 20°C is between 100 cSt and 4,000 cSt, the oil-absorbing particles absorb the unsaturated organopolysiloxane, resulting in excellent uniformity and stability of coating, and a smooth feel during application. At the same time, the pressure applied during application causes the oil-absorbing particles to release the unsaturated organopolysiloxane in appropriate amounts, improving the film formation rate.

[0027] The kinematic viscosity of unsaturated organopolysiloxanes at 20°C can be measured using a known viscometer.

[0028] For unsaturated organopolysiloxane, when 10 g of unsaturated organopolysiloxane is mixed with 5 g of silica at 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, the mass of the separated unsaturated organopolysiloxane, denoted as X g, is preferably greater than 0 and less than 0.2, as calculated using the following formula 1, from the viewpoint of coating uniformity. The lower limit of the release ratio A may be 0.005 or 0.01. In the calculation of formula 1, the mass of unsaturated organopolysiloxane may be 10 g, rounded to the first decimal place. The mass of silica may be 5 g, rounded to the first decimal place. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

[0029] The average particle size of the silica used in deriving the above release ratio A may be 1 μm or more and 10 μm or less. Preferably, the average particle size is 3 μm or more and 7 μm or less. Silica having the above average particle size is easy to handle and the mixing process can be completed in a relatively short time. The above average particle size refers to the particle size (area circle equivalent particle size) when converted to a circular particle having the same area as the projected area of ​​the particle observed with a transmission electron microscope. The area circle equivalent particle size is derived as the average value of 10 or more particles. The oil absorption amount [mL - boiled linseed oil / 100g - silica] of the silica used in deriving the above release ratio A is preferably 100 or more and 150 or less. The above oil absorption amount is measured in accordance with JIS-K5101:2004 Part 13 "Oil absorption amount - Section 2: Boiled linseed oil method". The silica used in deriving the above release ratio A is preferably hydrophobic porous silica particles that have been surface-treated with dimethicone. For example, SA-SB-300 (average particle size: 5 μm) manufactured by Miyoshi Chemical Co., Ltd. is used as the silica used to derive the release ratio A.

[0030] Furthermore, when the unsaturated organopolysiloxane is separated by centrifugation at a centrifugal acceleration of 1,000 G for 5 minutes, after mixing 10 g of unsaturated organopolysiloxane with 5 g of oil-absorbing particles under conditions of 20°C (this step may be referred to as the "mixing step"), and the mass of the separated unsaturated organopolysiloxane is Y g, it is preferable that the release ratio B of the unsaturated organopolysiloxane, calculated based on the following formula 2, is greater than 0 and less than 0.2, in order to obtain a smooth feel when applied. The lower limit of the release ratio B may be 0.005 or 0.01. Note that in the calculation of formula 2, the mass of the unsaturated organopolysiloxane may be 10 g when rounded to the first decimal place. Also, the mass of the oil-absorbing particles may be 5 g when rounded to the first decimal place. [Formula 2] Release ratio of unsaturated organopolysiloxanes B = Y / 10

[0031] When the average particle size of the oil-absorbing particles used to derive the above release ratio B is around 30 μm, it may take a relatively long time for oil absorption to be completed in the mixing step of the oil-absorbing particles and unsaturated organopolysiloxane. Therefore, when the average particle size of the oil-absorbing particles used to derive the above release ratio B exceeds 25 μm, instead of the mixing step in the above procedure, a step of mixing 10 g of unsaturated organopolysiloxane with 10 g of oil-absorbing particles under conditions of 20°C may be adopted. Note that the above average particle size refers to the particle size (area circle equivalent particle size) when converted to a circular particle having the same area as the projected area of ​​the particle observed with a transmission electron microscope. The area circle equivalent particle size is derived as the average value of 10 or more particles.

[0032] There are no particular limitations on unsaturated organopolysiloxanes having a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C. Examples include organopolysiloxanes having at least two carbon-carbon double bonds in the molecule, and organopolysiloxanes having at least one carbon-carbon triple bond in the molecule. Among these, one or more organopolysiloxanes having an average of at least two alkenyl groups (e.g., vinyl groups) are preferred as unsaturated organopolysiloxanes.

[0033] In this disclosure, "unsaturated portion" means a portion having a "carbon-carbon double bond" and a "carbon-carbon triple bond," which may be simply referred to as "double bond" and "triple bond." Unsaturated organopolysiloxanes may be used individually or in combination of two or more.

[0034] Unsaturated organopolysiloxanes may contain unsaturated portions (double or triple bond portions) in the terminal units of the polymer, in the non-terminal monomer units of the polymer, or in combination thereof.

[0035] There are no particular restrictions on the double bond-containing monomer units in the unsaturated organopolysiloxane; on average, they may be separated 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.

[0036] There are no particular restrictions on the content of the unsaturated portion of the unsaturated organopolysiloxane, but examples of lower limits include 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. Similarly, there are no particular restrictions on the upper limit of the content of the unsaturated portion of the unsaturated organopolysiloxane, but examples of upper limits include 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 upper and lower limits for the content of the unsaturated portion of unsaturated organopolysiloxanes can be combined as appropriate, for example, 0.001 mmol / g to 5.0 mmol / g, 0.001 mmol / g to 3.0 mmol / g, 0.001 mmol / g to 1.0 mmol / g, 0.001 mmol / g to 0.50 mmol / g, 0.001 mmol / g to 0.40 mmol / g, 0.005 mmol / g to 0.30 mmol / g, 0.010 mmol / g to 0.25 mmol / g, 0.050 mmol / g to 0.20 mmol / g, or 0.10 mmol / g to 0.15 mmol / g. The content (approximate molar amount) of the unsaturated portion in an unsaturated organopolysiloxane can be calculated based on the volume-average molecular weight of the unsaturated organopolysiloxane.

[0037] There are no particular restrictions on the volume-average molecular weight of unsaturated organopolysiloxanes. For example, the lower limits include 30,000 Da or more, 35,000 or more, 40,000 or more, 50,000 or more, 60,000 or more, 72,000 Da or more, 84,000 Da or more, 96,000 Da or more, 100,000 Da or more, 140,000 Da or more, and 150,000 Da or more. The upper limits for the volume-average molecular weight of unsaturated organopolysiloxanes include 500,000 Da or less, 200,000 Da or less, 190,000 Da or less, 180,000 Da or less, 170,000 Da or less, 160,000 Da or less, and 155,000 Da or less. The upper and lower limits of the volume-average molecular weight of unsaturated organopolysiloxanes can be combined as appropriate. For example, they can be 30,000 Da to 500,000 Da, 35,000 to 500,000 Da, 40,000 to 500,000 Da, 50,000 to 500,000 Da, 60,000 to 500,000 Da, 72,000 Da to 200,000 Da, 84,000 Da to 190,000 Da, 96,000 Da to 180,000 Da, 100,000 Da to 170,000 Da, 140,000 Da to 160,000 Da, 150,000 Da to 155,000 Da, and so on. The volume-average molecular weight of unsaturated organopolysiloxanes can be determined by gel permeation chromatography (GPC).

[0038] As the unsaturated organopolysiloxane, for example, at least one unsaturated organopolysiloxane selected from the group consisting of organopolysiloxanes having vinyl groups, vinyl-terminated organopolysiloxanes, and organopolysiloxanes having vinyl-terminated branched chains can be used.

[0039] Specific examples of unsaturated organopolysiloxanes include vinyl-terminated polydimethylsiloxane, vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer, vinyl-terminated polyphenylmethylsiloxane, vinylphenylmethyl-terminated vinylphenylsiloxane-phenylmethylsiloxane copolymer, vinyl-terminated trifluoropropylmethylsiloxane-dimethylsiloxane copolymer, vinyl-terminated diethylsiloxane-dimethylsiloxane copolymer, vinyl-methylsiloxane-dimethylsiloxane copolymer, trimethylsiloxy-terminated vinylmethylsiloxane-dimethylsiloxane copolymer, silanol-terminated vinylmethylsiloxane-dimethylsiloxane copolymer, vinyl methylsiloxane homopolymer, vinyl T-structure polymer, vinyl Q-structure polymer, monovinyl-terminated polydimethylsiloxane, vinyl methylsiloxane terpolymer, and vinyl methoxysilane homopolymer. These may be used individually or in combination of two or more types. Among these, vinyl-terminated polydimethylsiloxane is preferred as the unsaturated organopolysiloxane, and vinyl dimethicone (divinyldimethicone) is more preferred.

[0040] In this disclosure, "end" means either a single end or both ends. When distinguishing between them, for example, "vinyl single end" and "vinyl double end" may be used.

[0041] The ratio of the mass of unsaturated organopolysiloxane to the mass of the composition according to the first embodiment is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 0.5% by mass or more and 10% by mass or less, more preferably 1% by mass or more and 8% by mass or less, and even more preferably 2% by mass or more and 5% by mass or less. When the ratio of the mass of unsaturated organopolysiloxane to the mass of the composition according to the first embodiment is 0.5% by mass or more, a reaction product can be suitably formed when used together with a crosslinking reaction or hydrosilylation reactive component. Furthermore, when the ratio of the mass of unsaturated organopolysiloxane to the mass of the composition according to the first embodiment is 10% by mass or less, the composition according to the first embodiment can be applied uniformly, has high stability, and provides a smooth feel when applied.

[0042] There are no particular restrictions on the ratio of the mass of unsaturated organopolysiloxane to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles, and it can be appropriately selected depending on the purpose, but 0.3% to 40% by mass is preferred, 0.5% to 35% by mass is more preferred, and 1% to 30% by mass is even more preferred. When the ratio of the mass of unsaturated organopolysiloxane to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles is 0.3% by mass or more, the reaction product can be suitably formed when used together with a crosslinking reaction or hydrosilylation reactive component. Furthermore, when the ratio of the mass of unsaturated organopolysiloxane to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles is 40% by mass or less, the composition according to the first embodiment can be applied uniformly, has high stability, and provides a smooth feel when applied.

[0043] <Oil-absorbing particles> The oil-absorbing particles absorb unsaturated organopolysiloxane before use of the composition according to the first embodiment, improving its stability and enhancing the uniformity of the coating. Furthermore, when applying the composition according to the first embodiment, the oil-absorbing particles release the absorbed unsaturated organopolysiloxane due to the pressure applied during coating, thereby accelerating the reaction product generation rate, preferably the film formation rate.

[0044] In this disclosure, "stability" of the composition according to the first embodiment means the state in which the oil-absorbing particles in the composition according to the first embodiment absorb and retain the unsaturated organopolysiloxane in the composition according to the first embodiment. In other words, good, excellent, or improved stability of the composition according to the first embodiment means that the retention capacity of the unsaturated organopolysiloxane by the oil-absorbing particles is high, excellent, or improved, and / or that the adsorption capacity of the unsaturated organopolysiloxane to the oil-absorbing particles is high, excellent, or improved. As described above, the unsaturated organopolysiloxane retained by the oil-absorbing particles is released by the pressure applied during coating and seeps out of the composition according to the first embodiment, thereby improving the film formation rate. Therefore, the "stability" of the composition according to the first embodiment is an effect that occurs in the state before coating, for example, in the state during storage.

[0045] There are no particular restrictions on the amount of oil absorbed by the oil-absorbing particles, and it can be appropriately selected depending on the purpose, but it is preferably 50 mL / 100 g or more, and more preferably 100 mL / 100 g or more. There are no particular restrictions on the upper limit of the amount of oil absorbed by the oil-absorbing particles, but from the standpoint of stability, for example, it can be set to 200 mL / 100 g or less, preferably 150 mL / 100 g or less.

[0046] Here, the amount of oil absorbed by oil-absorbing particles can be measured in accordance with JIS-K5101:2004 Part 13 "Oil absorption - Section 2: Boiled linseed oil method". Specifically, boiled linseed oil is added to the sample while kneading it until the entire sample forms a single mass. The amount of oil absorbed is expressed as the volume (mL) of boiled linseed oil per 100g of the sample when the entire sample forms a single mass.

[0047] The oil-absorbing particles may be inorganic or organic, and may be surface-treated. Examples of oil-absorbing particles include silica, perlite, boron nitride, magnesium carbonate, magnesium hydroxide, kaolin, talc, mica, polyamide resin powder, (meth)acrylic resin powder, silicone resin powder, and metal soap powder. These may be used individually or in combination of two or more. Among these, silica, silicone resin powder, and mica are preferred as oil-absorbing particles in terms of uniformity of application, stability, oil absorption, and oil release, and silica and silicone resin powder are more preferred in terms of uniformity of application.

[0048] Examples of polyamide resins include nylon. Examples of silicone resin powders include (vinyl dimethicone / methicone silsesquioxane) crosspolymer. Examples of metal soap powders include zinc myristate, calcium palmitate, and aluminum stearate.

[0049] There are no particular restrictions on the shape of the oil-absorbing particles; for example, spherical or plate-shaped particles can be used. Plate-shaped particles can improve the adhesion of the oil-absorbing particles to the coating surface.

[0050] In this disclosure, the term "plate-like" may also include shapes referred to as "flaky" or "flat." The oil-absorbing particles may consist of particles of the same shape, or spherical and plate-like particles may be used in combination.

[0051] There are no particular restrictions on the average particle size of the oil-absorbing particles, and they can be appropriately selected depending on the purpose. However, the upper limit is preferably 100 μm or less, more preferably 70 μm or less, and even more preferably 50 μm or less. There are no particular restrictions on the lower limit of the average particle size of the oil-absorbing particles, and they can be appropriately selected depending on the purpose. For example, they can be 1 nm or more, 10 nm or more, 100 nm or more, 500 nm or more, 800 nm or more, 1 μm or more, etc. The upper and lower limits of the average particle size of the oil-absorbing particles can be appropriately combined. For example, they can be 1 nm to 100 μm, 10 nm to 100 μm, 100 nm to 100 μm, 500 nm to 70 μm, 800 nm to 50 μm, 1 μm to 50 μm, etc.

[0052] In the composition according to the first embodiment, the average particle diameter of the oil-absorbing particles refers to the particle diameter (area circle equivalent particle diameter) when converted to a circular particle having the same area as the projected area of ​​the particles observed with a transmission electron microscope. The area circle equivalent particle diameter is defined as the average value of 10 or more particles.

[0053] There are no particular restrictions on the ratio of the mass of oil-absorbing particles to the mass of the composition according to the first embodiment, and it can be appropriately selected depending on the purpose, but 20% by mass or more and 85% by mass or less is preferred, 25% by mass or more and 80% by mass or less is more preferred, and 30% by mass or more and 75% by mass or less is even more preferred. When the ratio of the mass of oil-absorbing particles to the mass of the composition according to the first embodiment is 20% by mass or more, the composition according to the first embodiment can be applied uniformly, has high stability, and provides a smooth feeling when applied. Furthermore, when the ratio of the mass of oil-absorbing particles to the mass of the composition according to the first embodiment is 85% by mass or less, when used together with a crosslinking reaction or hydrosilylation reactive component, a reaction product can be suitably formed.

[0054] There are no particular restrictions on the ratio of the mass of oil-absorbing particles to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles, and it can be appropriately selected depending on the purpose, but 40% by mass or more and less than 100% by mass is preferred, 45% by mass or more and 95% by mass or less is more preferred, and 50% by mass or more and 90% by mass or less is even more preferred. When the ratio of the mass of oil-absorbing particles to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles is 40% by mass or more, the composition according to the first embodiment can be applied uniformly, has high stability, and provides a smooth feel when applied. Furthermore, when the ratio of the mass of oil-absorbing particles to the total mass of the unsaturated organopolysiloxane and oil-absorbing particles is less than 100% by mass, the reaction product can be suitably formed when used together with a crosslinking reaction or hydrosilylation reactive component.

[0055] <Water> In the composition according to the first embodiment, the mass percentage of water is 5% by mass or less. In the composition according to the first embodiment, there are no particular restrictions as long as the mass percentage of water is 5% by mass or less and the composition can be in powder or solid form. Furthermore, the composition according to the first embodiment may not contain water (i.e., the mass percentage of water in the composition is 0% by mass).

[0056] There are no particular restrictions on the type of water used; for example, water used in cosmetics or quasi-drugs can be used. For example, ion-exchanged water, distilled water, ultrapure water, tap water, etc., can be used. These may be used individually or in combination of two or more types.

[0057] <Hydride-functionalized polysiloxane> The composition according to the first embodiment may contain a hydride-functionalized polysiloxane. A hydride-functionalized polysiloxane is a polysiloxane having a hydride group (Si-H group). There are no particular restrictions on the hydride-functionalized polysiloxane, and examples include compounds represented by the following general formula (1).

[0058] [ka]

[0059] In the aforementioned general 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 selected from the group consisting of hydrogen, alkyl having 1 to 20 carbon atoms, alkenyl having 2 to 20 carbon atoms, aryl having 5 to 10 carbon atoms, hydroxyl, or alkoxy having 1 to 20 carbon atoms, and m and n are each independently an integer of 10 to 6,000. Provided that at least one of R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , R 9b , and R 10b is hydrogen.

[0060] In the present disclosure, "independently" means that R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , R 9b , and R 10b may each be the same or different.

[0061] In some embodiments, R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , R 9b , and R 10bAt least one of them is hydrogen, and the rest are alkyl groups with 1 to 20 carbon atoms.

[0062] 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 them are hydrogen atoms (for example, hydride-functionalized polysiloxanes have two Si-H groups per molecule).

[0063] 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 them are hydrogen atoms (for example, hydride-functionalized polysiloxanes have three Si-H groups per molecule).

[0064] 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 atoms are hydrogen (for example, hydride-functionalized polysiloxanes have two Si-H groups per molecule), and the rest are alkyl groups with 1 to 20 carbon atoms.

[0065] Other embodiments, R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , R9b , and R 10b At least three of them are hydrogen atoms (for example, hydride-functionalized polysiloxanes have three Si-H groups per molecule), and the rest are alkyl groups with 1 to 20 carbon atoms.

[0066] In some embodiments, R 4b , R 5b , R 9b , and R 10b At least two of the atoms are hydrogen (for example, hydride-functionalized polysiloxanes have two Si-H groups per molecule), and the rest are alkyl groups with 1 to 20 carbon atoms.

[0067] Other embodiments, R 4b , R 5b , R 9b , and R 10b At least three of them are hydrogen atoms (for example, hydride-functionalized polysiloxanes have three Si-H groups per molecule), and the rest are alkyl groups with 1 to 20 carbon atoms.

[0068] In some embodiments, the sum of m and n is an integer between 10 and 1,300, 10 and 1,100, 10 and 600, 15 and 500, 15 and 400, 20 and 300, 20 and 200, 25 and 100, 25 and 75, 30 and 50, or 40 and 45.

[0069] In some embodiments, examples of hydride-functionalized polysiloxanes include organopolysiloxanes that are hydrogenated at the non-terminal and / or terminal ends, and consist of one or more organopolysiloxanes having at least two Si-H groups in the molecule, preferably one or more organopolysiloxanes having an average of at least two Si-H groups and a viscosity of 2 cSt to 100,000 cSt at 20°C.

[0070] In some embodiments, the hydride-functionalized polysiloxane may comprise such Si-H groups at the terminal units of the polymer, at the non-terminal monomer units of the polymer, or a combination thereof. Among these, the Si-H groups are preferably comprised in the non-terminal monomer units of the polymer. The hydride-functionalized polysiloxane in this case may be alkyl-terminated. For example, in the aforementioned general formula (1), R 2b and R 7b one or both of may be alkyl having 1 to 20 carbon atoms.

[0071] In one embodiment, in the aforementioned general formula (1), R 1b , R 2b , R 3b , R 6b , R 7b , and R 8b one, two, three, four, five, or six of may be alkyl having 1 to 20 carbon atoms.

[0072] In one embodiment, R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , and R 10b are each independently alkyl having 1 to 20 carbon atoms, for example, alkyl having 1 carbon atom (e.g., methyl), and R 9b may be hydrogen.

[0073] In one embodiment, R 1b , R 2b , R 3b , R 4b , R 5b , R 6b , R 7b , R 8b , and R 9b are each independently alkyl having 1 to 20 carbon atoms, for example, alkyl having 1 carbon atom (e.g., methyl), and R 10b may be hydrogen.

[0074] In one embodiment, the Si-H group-containing monomer units in the hydride-functionalized polysiloxane may be spaced apart on average by 1 monomer unit or more, 2 monomer units or more, 5 monomer units or more, 10 monomer units or more, 20 monomer units or more, 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.

[0075] There are no particular restrictions on the Si-H group content of hydride-functionalized polysiloxanes. For example, the lower limit 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. The upper limit for the Si-H group content of hydride-functionalized polysiloxanes can be, for example, 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 groups in hydride-functionalized polysiloxanes can be calculated based on the average molecular weight of the hydride-functionalized polysiloxanes. Furthermore, there are no particular restrictions on the combination of the upper and lower limits for the Si-H group content of the hydride-functionalized polysiloxane; they can be combined as appropriate. For example, they can be 0.10 mmol / g or more and 20 mmol / g or less, 0.10 mmol / g or more and 10 mmol / g or less, 0.50 mmol / g or more and 9.0 mmol / g or less, 1.0 mmol / g or more and 8.0 mmol / g or less, 2.0 mmol / g or more and 7.0 mmol / g or less, 3.0 mmol / g or more and 6.0 mmol / g or less, or 4.0 mmol / g or more and 5.0 mmol / g or less.

[0076] The kinematic viscosity of hydride-functionalized polysiloxane at 20°C is not particularly limited, but is preferably between 2 cSt and 500,000 cSt. The lower limit of the kinematic viscosity of hydride-functionalized polysiloxane is preferably 3 cSt or higher, 4 cSt or higher, 5 cSt or higher, 10 cSt or higher, 12 cSt or higher, 15 cSt or higher, 20 cSt or higher, 25 cSt or higher, 30 cSt or higher, 40 cSt or higher, or 45 cSt or higher. The upper limit of the kinematic viscosity of hydride-functionalized polysiloxane 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, 1,000 cSt or less, 500 cSt or less, 100 cSt or less, or 50 cSt or less. Furthermore, there are no particular restrictions on the combination of the upper and lower limits of the kinematic viscosity of hydride-functionalized polysiloxanes at 20°C; they can be combined as appropriate. Examples include 3 cSt to 200,000 cSt, 4 cSt to 100,000 cSt, 5 cSt to 50,000 cSt, 10 cSt to 20,000 cSt, 12 cSt to 10,000 cSt, 15 cSt to 5,000 cSt, 20 cSt to 2,000 cSt, 25 cSt to 1,000 cSt, 30 cSt to 500 cSt, 40 cSt to 100 cSt, 40 cSt to 50 cSt, or 45 cSt to 50 cSt. Among these, the kinematic viscosity of hydride-functionalized polysiloxane at 20°C is preferably 40 cSt to 100 cSt, more preferably 40 cSt to 50 cSt, and more preferably 45 cSt to 50 cSt.

[0077] There are no particular restrictions on the volume-average molecular weight of the hydride-functionalized polysiloxane, but it is preferably between 400 Da and 500,000 Da. The lower limit of the volume-average molecular weight of the hydride-functionalized polysiloxane is preferably 500 Da or more, 800 Da or more, 900 Da or more, 1,000 Da or more, 1,200 Da or more, 1,400 Da or more, 1,600 Da or more, 1,800 Da or more, 2,000 Da or more, 2,200 Da or more, or 2,300 Da or more. Furthermore, it is more preferable that the upper limit of the volume-average molecular weight of the hydride-functionalized polysiloxane be 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, 4,000 Da or less, or 2,500 Da or less. Furthermore, there are no particular restrictions on the combination of the upper and lower limits of the volume-average molecular weight of hydride-functionalized polysiloxanes; they can be combined as appropriate. For example, 500 Da to 250,000 Da, 500 Da to 140,000 Da, 500 Da to 100,000 Da, 500 Da to 72,000 Da, 500 Da to 62,700 Da, 500 Da to 60,000 Da, 500 Da to 50,000 Da, 8 Examples include 00Da to 49,500Da, 900Da to 36,000Da, 1,000Da to 28,000Da, 1,200Da to 25,000Da, 1,400Da to 20,000Da, 1,600Da to 15,000Da, 1,800Da to 10,000Da, 2,000Da to 5,000Da, 2,200Da to 4,000Da, or 2,300Da to 2,500Da.

[0078] Specific examples of hydride-functionalized polysiloxanes include 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 copolymer. These may be used individually or in combination of two or more. Among these, hydride-terminated polydimethylsiloxane is preferred as the hydride-functionalized polysiloxane, and hydrogen dimethicone is more preferred.

[0079] There are no particular restrictions on the mass ratio of the hydride-functionalized polysiloxane to the mass of the composition according to the first embodiment, but the upper limit is preferably 10% by mass or less, and more preferably 5% by mass or less. There are also no particular restrictions on the lower limit of the mass ratio of the hydride-functionalized polysiloxane to the mass of the composition according to the first embodiment, and can be, for example, 1% by mass or more, 2% by mass or more, or 3% by mass or more. The upper and lower limits of the mass ratio of the hydride-functionalized polysiloxane to the mass of the composition according to the first embodiment can be combined as appropriate, for example, 1% by mass or more and 10% by mass or less, 2% by mass or more and 10% by mass or less, 2% by mass or more and 5% by mass or less, or 3% by mass or more and 5% by mass or less.

[0080] <Catalyst> The composition according to the first embodiment may include a catalyst to promote the reaction between the unsaturated bonds contained in the unsaturated organopolysiloxane and the Si-H groups contained in the hydride-functionalized polysiloxane.

[0081] The catalyst is not particularly limited as long as it can promote the reaction between unsaturated bonds (e.g., vinyl groups, etc.) contained in unsaturated organopolysiloxanes and Si-H groups contained in hydride-functionalized polysiloxanes. Examples include any substance capable of causing physical and / or chemical crosslinking or hydrosilylation reactions to unsaturated bonds and / or Si-H groups, promoting crosslinking or hydrosilylation reactions, and / or initiating crosslinking or hydrosilylation reactions. The catalyst may or may not undergo permanent physical and / or chemical changes during or at the end of the process.

[0082] There are no particular restrictions on such catalysts, but it is preferable that the catalyst can induce a crosslinking reaction at a temperature below body temperature, promote the crosslinking reaction, and / or initiate the crosslinking reaction (for example, a metal catalyst). The metal catalyst preferably contains at least one of the following: a transition metal (i.e., an element from groups 3 to 11 or from groups 3 to 12), a metal from group VIII (an element from groups 8 to 10 of the long periodic table), and a metal from group IVA. The metal catalyst may also contain at least one metal selected from the group consisting of iron group elements, manganese group elements, and platinum group elements. The metal catalyst may be the metal itself or a complex of the metal.

[0083] Examples of Group VIII metal catalysts include platinum catalysts, rhodium catalysts, palladium catalysts, iron catalysts, cobalt catalysts, nickel catalysts, manganese catalysts, ruthenium catalysts, osmium catalysts, and iridium catalysts. Examples of Group IVA metal catalysts include germanium catalysts and tin catalysts. These may be used individually or in combination of two or more. Among these, platinum catalysts, rhodium catalysts, or tin catalysts are preferred. Examples of iron catalysts include iron complexes having pincer ligands.

[0084] Examples of platinum catalysts include Speier catalysts (H2PtCl6), Ashby catalysts, platinum carbonylcyclovinylmethylsiloxane complexes, platinum divinyltetramethyldisiloxane complexes, platinum cyclovinylmethylsiloxane complexes, platinum octanealdehyde / octanol complexes, and other Pt(0) catalysts. Examples of other Pt(0) catalysts include Karstedt catalysts, 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-imide complexes, platinum-amide complexes, platinum-ester complexes, platinum-phosphate ester complexes, platinum-thiol ester complexes, platinum lone pair complexes, platinum-aromatic complexes, and platinum π-electron complexes. These may be used individually or in combination of two or more. Among these, at least one selected from the group consisting of platinum carbonylcyclovinylmethylsiloxane complex, platinum divinyltetramethyldisiloxane complex, platinum cyclovinylmethylsiloxane complex, and platinum octanealdehyde / octanol complex is preferred as the platinum catalyst.

[0085] Examples of rhodium catalysts include tris(dibutylsulfide)rhodium trichloride and rhodium trichloride hydrate. These may be used individually or in combination of two or more.

[0086] Examples of tin catalysts include tin(II) octanoate, tin(II) neodecanoate, dibutyltin diisooctyl maleate, di-n-butylbis(2,4-pentanedionate)tin, di-n-butylbutoxychlorotin, dibutyltin dilaurate, dimethyltin dineodecanoate, dimethylhydroxy(oleate)tin, and tin(II) oleate. These may be used individually or in combination of two or more.

[0087] Among these, platinum catalysts are preferred, platinum complex catalysts are more preferred, and Karstedt catalysts, platinum divinyltetramethyldisiloxane complexes, and Ashby catalysts are particularly preferred.

[0088] There are no particular restrictions on the ratio of the mass of the catalyst to the mass of the composition according to the first embodiment. For example, the upper limit can be 5.0% by mass or less, 3.0% by mass or less, 1.0% by mass or less, 0.50% by mass or less, 0.10% by mass or less, or 0.050% by mass or less. Similarly, there are no particular restrictions on the lower limit of the ratio of the mass of the catalyst to the mass of the composition according to the first embodiment. For example, it can be 0.001% by mass or more, 0.005% by mass or more, or 0.010% by mass or more. The upper and lower limits of the ratio of the mass of the catalyst to the mass of the composition according to the first embodiment can be appropriately combined, for example, 0.001% by mass or more and 5.0% by mass or less, 0.001% by mass or more and 3.0% by mass or less, 0.005% by mass or more and 1.0% by mass or less, 0.005% by mass or more and 0.50% by mass or less, 0.010% by mass or more and 0.10% by mass or less, or 0.010% by mass or more and 0.050% by mass or less.

[0089] <Other ingredients> The composition according to the first embodiment may contain other components in addition to those described above. There are no particular limitations on the other components, and they can be appropriately selected depending on the purpose. Examples include texture modifiers, tack modifiers, spreadability enhancers, diluents, adhesion modifiers, oils other than unsaturated organopolysiloxanes, emulsifiers (surfactants), humectants, preservatives, colorants other than oil-absorbing particles (e.g., dyes), fabrics, rubber materials (e.g., rubber sheets made of silicone rubber, etc.), components that thicken the aqueous or oil phase (e.g., thickeners), protective colloids, skin permeability enhancers, optical modifiers, scattering agents, adsorbents, magnetic materials, gas transport modifiers, liquid transport modifiers, pH modifiers, sensitizers, aesthetic modifiers, antioxidants, vitamins, vitamin D3 analogs, retinoids, minerals, mineral oil, petrolatum, fatty acids, plant extracts, polypeptides, antibodies, proteins, sugars, humectants, and emollients.

[0090] Furthermore, the composition according to the first embodiment may also contain, as other components, cosmetic agents such as moisturizers, UV absorbers, skin protectants, skin soothing agents, skin whitening agents, skin glossing agents, skin softeners, skin smoothing agents, skin bleaching agents, skin exfoliants, skin tightening agents, cosmetic agents, vitamins, antioxidants, cell signaling agents, cell regulators, cell interaction agents, skin sunscreens, anti-aging agents, wrinkle inhibitors, spot reducers, α-hydroxy acids, β-hydroxy acids, ceramides, etc.

[0091] Furthermore, the composition according to the first embodiment may also contain, as other components, therapeutic agents such as pain relievers, analgesics, antipruritic agents, antiacids (e.g., β-hydroxy acids, salicylic acid, benzoyl peroxide, etc.), anti-inflammatory agents, antihistamines, corticosteroids, NSAIDs (e.g., nonsteroidal anti-inflammatory drugs, etc.), preservatives, antibiotics, antibacterial agents, antifungal agents, antiviral agents, antiallergic agents, anti-irritants, insect repellents, phototherapy agents, blood coagulants, antineoplastic agents, immune system enhancers, immune system suppressants, coal tar, anthraline, fluocinonide, methotrexate, cyclosporine, pimecrolimus, tacrolimus, azathioprine, fluorouracil, ceramides, counter-irritants, and skin cooling compounds.

[0092] In the composition according to the first embodiment, these other components may be used individually or in combination of two or more.

[0093] -emulsifier- In the composition according to the first embodiment, the emulsifier refers to an agent having emulsifying function (surfactant activity), and can also include agents generally referred to as surfactants.

[0094] There are no particular restrictions on the emulsifier used; for example, anionic, cationic, amphoteric, or nonionic emulsifiers can be used. These may be used individually or in combination of two or more.

[0095] Specifically, examples of emulsifiers include at least one selected from the group consisting of hydrocarbon surfactants, silicone surfactants other than hydride-functionalized polysiloxanes, and amphiphilic powders.

[0096] 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.

[0097] Examples of silicone-based surfactants other than hydride-functionalized polysiloxanes include polyether-modified silicones such as PEG-9 polydimethylsiloxyethyl dimethicone, PEG-10 dimethicone, PO / EO-modified silicones (e.g., PEG / PPG-19 / 19 dimethicone), and dimethicone / (PEG-10 / 15) crosspolymer; polyglycerin-alkyl copolymerized silicones such as bisbutyl dimethicone polyglyceryl-3 and cetyl PEG / PPG-10 / 1 dimethicone; and carboxy-modified silicones such as carboxydecyl trisiloxane. Note that "PEG" and "PPG" mean polyethylene glycol and polypropylene glycol, respectively. Also, "PO" and "EO" mean propylene oxide and ethylene oxide, respectively.

[0098] There are no particular restrictions on the ratio of the mass of the emulsifier to the mass of the composition according to the first embodiment, but from the viewpoint of emulsification stability, it can be 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.2% by mass or more, 1.0% by mass or more, or 2.0% by mass or more. There are also no particular restrictions on the upper limit of the ratio of the mass of the emulsifier to the mass of the composition according to the first embodiment, but it can be 10% by mass or less, 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, or 2.0% by mass or less. The upper and lower limits of the ratio of the mass of the emulsifier to the mass of the composition according to the first embodiment can be combined as appropriate, for example, 0.01% to 10% by mass, 0.01% to 5.0% by mass, 0.01% to 4.0% by mass, 0.01% to 3.0% by mass, 0.01% to 2.0% by mass, 0.05% to 10% by mass, 0.05% to 5.0% by mass, 0.05% to 4.0% by mass, 0.05% to 3.0% by mass, 0.05% to 2.0% by mass, 0.1% to 10% by mass, 0.1% to 5.0% by mass, 0.1% to 4.0% by mass. 0.1 mass% to 3.0 mass%, 0.1 mass% to 2.0 mass%, 0.2 mass% to 10 mass%, 0.2 mass% to 5.0 mass%, 0.2 mass% to 4.0 mass%, 0.2 mass% to 3.0 mass%, 0.2 mass% to 2.0 mass%, 1.0 mass% to 10 mass%1. Examples include 0 mass% to 5.0 mass%, 1.0 mass% to 4.0 mass%, 1.0 mass% to 3.0 mass%, 1.0 mass% to 2.0 mass%, 2.0 mass% to 20 mass%, 2.0 mass% to 5.0 mass%, 2.0 mass% to 4.0 mass%, 2.0 mass% to 3.0 mass%.

[0099] -Oil- Other than unsaturated organopolysiloxanes, there are no particular restrictions on the oils, and examples include silicone oils, hydrocarbon oils, polar oils, liquid oils and fats, solid oils and fats, waxes, and ester oils. These may be used individually or in combination of two or more. Here, if the composition according to the first embodiment contains a hydride-functionalized polysiloxane, it is preferable to simultaneously contain other oils or oily bases other than the hydride-functionalized polysiloxane.

[0100] The oil may be a non-volatile oil or a volatile oil.

[0101] In this disclosure, "volatile oil" means oil in which 10 g of oil is precisely measured, placed in a screw-cap bottle (50 mL, manufactured by Maruemu Co., Ltd.), and left at atmospheric pressure and 105°C for 3 hours, and the volatile content exceeds 5% by mass. Therefore, the volatile content of the volatile oil may be 10% or more by mass, 20% or more by mass, 40% or more by mass, 50% or more by mass, 60% or more by mass, 80% or more by mass, or 100% by mass, and there is no particular upper limit.

[0102] In this disclosure, "non-volatile" means a solvent in which 10 g of oil is precisely weighed, placed in a screw-cap bottle (50 mL, manufactured by Maruemu Co., Ltd.), and left at atmospheric pressure and 105°C for 3 hours, and the volatile content is 5% by mass or less. Therefore, the volatile content of a non-volatile oil may be 1% by mass or more, or 0% by mass, and there is no particular limit to its lower limit.

[0103] The volatile content of the oil can be calculated using the following formula 3, where "A1" is the mass of the oil initially measured, and "B1" is the mass of the oil remaining after being left for 3 hours at atmospheric pressure and 105°C under the conditions described above. [Formula 3] Volatile content of oil [mass %] = (A1 - B1) / A1 × 100

[0104] Alternatively, the boiling point at 1 atmosphere (101.325 kPa) can be used as a guideline for volatility. This boiling point can be 250°C or below, 240°C or below, or 230°C or below, and can also be 80°C or above, 100°C or above, 120°C or above, 150°C or above, or 160°C or above.

[0105] There are no particular restrictions on the silicone oil used, and it can be appropriately selected depending on the purpose. Examples include acyclic silicone oils and cyclic silicone oils. Examples of acyclic silicone oils include linear silicone oils and branched silicone oils. These may be used individually or in combination of two or more types.

[0106] Examples of cyclic silicone oils include cyclotetrasiloxane and cyclopentasiloxane.

[0107] Examples of volatile acyclic silicone oils include linear silicone oils such as dimethylpolysiloxane (sometimes called "dimethicone") and divinyldisiloxane, which have a kinematic viscosity of 5 cSt or less; and branched silicone oils such as methyltrimethicone, tris(trimethylsilyl)methylsilane, and tetrakis(trimethylsilyl)silane.

[0108] Examples of dimethicone with a kinematic viscosity of 5 cSt or less include dimethicone (kinematic viscosity: 0.65 cSt), dimethicone (kinematic viscosity: 1.5 cSt), dimethicone (kinematic viscosity: 1 cSt), dimethicone (kinematic viscosity: 2 cSt), dimethicone (kinematic viscosity: 3 cSt), dimethicone (kinematic viscosity: 4 cSt), and dimethicone (kinematic viscosity: 5 cSt).

[0109] Examples of non-volatile silicone oils include chain-like silicones such as dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane (diphenylsiloxyphenyl trimethicone), and methylhydrogenpolysiloxane, which have a kinematic viscosity of 6 cSt or higher.

[0110] There are no particular restrictions on the hydrocarbon oils used, and they can be appropriately selected depending on the purpose. Examples include volatile hydrocarbon oils such as hydrogenated polyisobutene, undecane, tridecane, isododecane, alkanes with 9 to 12 carbon atoms, and isohexadecane; and non-volatile hydrocarbon oils such as liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, and olefin oligomers. These may be used individually or in combination of two or more.

[0111] As long as the oil is a volatile polar oil, there are no particular restrictions, and it can be appropriately selected depending on the purpose. Examples include ester oils.

[0112] Examples of non-volatile polar oils include polar oils with an IOB of 0.10 or higher. Examples of such polar oils include isopropyl myristate (IOB value = 0.18), octyl palmitate (IOB value = 0.13), isopropyl palmitate (IOB value = 0.16), butyl stearate (IOB value = 0.14), hexyl laurate (IOB value = 0.17), myristyl myristate (IOB value = 0.11), decyl oleate (IOB value = 0.11), isononyl isononanoate (IOB value = 0.20), and isotridecyl isononanoate (IOB value = 0.1 5) Cetyl ethylhexanoate (IOB value = 0.13), pentaerythrityl tetraethylhexanoate (IOB value = 0.35), diethylhexyl succinate (IOB value = 0.32), dioctyl succinate (IOB value = 0.36), glycol distearate (IOB value = 0.16), glyceryl diisostearate (IOB value = 0.29), neopentyl glycol dicaprate (IOB value = 0.25), diisostearyl malate (IOB value = 0.28), triisostearate Methylolpropane (IOB value = 0.16), Glyceryl tri-2-ethylhexanoate (triethylhexanoin) (IOB value = 0.35), Trimethylolpropane trioctanoate (IOB value = 0.33), Trimethylolpropane triisostearate (IOB value = 0.16), Diisobutyl adipate (IOB value = 0.46), N-lauroyl-L-glutamic acid-2-octyldodecyl ester (IOB value = 0.29), 2-hexyldecyl adipate (IOB value = 0.16) Examples include diisopropyl sebacate (IOB value = 0.40), ethylhexyl methoxycinnamate (IOB value = 0.28), 2-ethylhexyl palmitate (IOB value = 0.13), 2-ethylhexyl ethylhexanoate (IOB value = 0.2), triisostearin (IOB value = 0.16), PPG-3 dipivalate (IOB value = 0.52), and tri(caprylic / capric acid) glyceryl (IOB value = 0.33), cetyl 2-ethylhexanoate (IOB value = 0.13).

[0113] Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, peach kernel oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, elm oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, cinnamon oil, Japanese tuni oil, jojoba oil, wheat germ oil, and triglycerin.

[0114] Examples of solid fats and oils include cocoa butter, coconut oil, horse fat, hydrogenated coconut oil, palm oil, beef tallow, sheep fat, hydrogenated beef tallow, palm kernel oil, pork fat, beef bone fat, Japanese wax kernel oil, hydrogenated oil, beef tallow, Japanese wax, and hydrogenated castor oil.

[0115] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, privet wax, whale wax, montan wax, rice bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, isopropyl lanolin fatty acid, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, and POE hydrogenated lanolin alcohol ether.

[0116] Furthermore, UV absorbers that can be considered as oils can also be used. For example, UV absorbers with an IOB of 0.10 or higher, specifically organic UV absorbers such as ethylhexyl methoxycinnamate, octocrylene, polysilicone-15, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, bis-ethylhexyloxyphenol methoxyphenyl triazine, diethylamino hydroxybenzoyl hexyl benzoate, oxybenzone-3, methylene bisbenzotriazolyltetramethylbutylphenol, homosalate, ethylhexyl salicylate, and octyl salicylate.

[0117] There are no particular restrictions on the ratio of the mass of oil to the mass of the composition according to the first embodiment, and it can be appropriately blended depending on the type of dosage form used, the required film strength, etc. For example, the upper limit can be 85% by mass or less, 80% by mass or less, 75% by mass or less, 70% by mass or less, 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass or less, or 35% by mass or less. Similarly, there are no particular restrictions on the lower limit of the ratio of the mass of oil to the mass of the composition according to the first embodiment, and it can be 5% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, or 30% by mass or more. The upper and lower limits of the ratio of the mass of oil to the mass of the composition according to the first embodiment can be appropriately combined, for example, 5% to 85% by mass, 5% to 80% by mass, 10% to 75% by mass, 10% to 70% by mass, 15% to 60% by mass, 20% to 55% by mass, 25% to 50% by mass, 30% to 45% by mass, 30% to 40% by mass, or 30% to 35% by mass.

[0118] <<Applications>> The composition according to the first embodiment can be suitably used as a composition for forming a reactant, preferably a film, on an object such as skin. Therefore, the composition according to the first embodiment is also a film-forming agent used for film formation, and this film-forming agent is also included in the scope of this disclosure.

[0119] There are no particular limitations on the objects to which the composition according to the first embodiment can be applied, and examples include skin, electronic devices, and optical components. Among these, the composition according to the first embodiment can be suitably applied to skin. As for skin, it can be applied to any part of the surface of the skin on any part of the animal's body, that is, any part on the body surface, such as the head, face (lips, eyes, nose, cheeks, forehead, etc.), neck, ears, hands, arms, legs, feet, chest, abdomen, back, and buttocks. In this disclosure, skin also includes nails, which are formed when the keratin of the epidermis of the skin changes and hardens.

[0120] Furthermore, the composition according to the first embodiment is used to form a reactant, preferably a film, by a crosslinking reaction or hydrosilylation reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, in the presence of a catalyst to promote the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane.

[0121] The composition according to the first embodiment is not particularly limited in its use and can be appropriately selected according to the purpose. Examples include sunscreen cosmetics, base cosmetics, makeup cosmetics (e.g., foundation, face powder, lip gloss, lipstick, eyeshadow, nail polish, etc.), skincare cosmetics (e.g., serum, lotion, emulsion, etc.), or cosmetics that combine two or more of the functions of these cosmetics. Among these, the composition according to the first embodiment is suitable for use as a foundation or face powder because it is a powder or solid composition.

[0122] For example, conventional foundations or face powders are primarily applied by first applying a base makeup product to the skin, but they have problems such as makeup breakdown over time and secondary adhesion to clothing or masks. Therefore, when such problems occur, it is necessary to reapply the makeup. In contrast, when the composition according to the first embodiment is used as a foundation or face powder, and a composition containing a crosslinking reaction or hydrosilylation reactive component that crosslinks with an unsaturated organopolysiloxane, preferably a composition containing a hydride-functionalized polysiloxane, is used as a base makeup product, a uniform reactant, preferably a film, can be formed on the skin, making makeup breakdown and secondary adhesion less likely. Furthermore, since the reactant produced by the composition according to the first embodiment has higher strength than the coating film produced by conventional base makeup compositions, such problems and the need for reapplying makeup can be reduced or suppressed. In addition, the film produced by the composition according to the first embodiment has fewer defects such as color changes and also exhibits excellent long-lasting performance.

[0123] Furthermore, by forming a reactant on the skin using the composition according to the first embodiment, the skin can be well moisturized by the occlusion effect of the reactant (the effect of preventing moisture from escaping from the skin). As a result, for example, the production function of moisturizing components (natural moisturizing factors: NMF) that the skin itself produces is improved, and the abnormality of turnover in the stratum corneum is also improved, so skin problems such as roughness become less likely to occur, and the beauty effect can be enhanced.

[0124] Therefore, the composition according to the first embodiment can also be used as a cosmetic agent for the skin. In this disclosure, "cosmetic agent" means a substance used to apply the composition according to the first embodiment to the skin to form a film and beautify the condition of the skin, or a substance used to beautify the condition of the skin.

[0125] Furthermore, for example, the composition according to the first embodiment can be used as a protective film for electronic devices such as semiconductors or optical components such as optical lenses by forming a film on them.

[0126] There are no particular restrictions on the animals to which the composition according to the first embodiment can be applied. Examples include humans, monkeys, pigs, cattle, sheep, goats, dogs, cats, mice, rats, and birds, but it can be preferably applied to humans.

[0127] [[How to use]] The method of using the composition according to the first embodiment is not particularly limited as long as it can form a reactant, but the method for producing silicone described later in this disclosure can be suitably applied.

[0128] The reactant formed by the composition according to the first embodiment is mainly formed by a crosslinking reaction or hydrosilylation reaction between the unsaturated bonds contained in the unsaturated organopolysiloxane contained in the composition and optionally a hydride group contained in the hydride-functionalized polysiloxane contained in the composition, preferably by a crosslinking reaction or hydrosilylation reaction between the vinyl group contained in the unsaturated organopolysiloxane contained in the composition and optionally a hydride group contained in the hydride-functionalized polysiloxane contained in the composition. If the hydride-functionalized polysiloxane is not contained in the composition according to the first embodiment, it is preferably contained in another composition for reaction with the composition.

[0129] The bonds formed by the crosslinking or hydrosilylation reaction may connect polymer chains to a three-dimensional network. These bonds preferably have a long-chain branched structure, forming a continuous, insoluble network or gel. The crosslinking or hydrosilylation reaction is preferably carried out using a catalyst to promote the reaction between unsaturated bonds in a saturated organopolysiloxane and hydride groups in a hydride-functionalized polysiloxane. The use of a catalyst in the crosslinking or hydrosilylation reaction offers advantages such as reduced by-product formation in the formation of the three-dimensional network and a denser bond site and network structure. If the catalyst is not included in the composition according to the first embodiment, it is preferably included in another composition for reaction with that composition.

[0130] If the composition according to the first embodiment contains a hydride-functionalized polysiloxane, the catalyst is preferably contained in another composition. In this case, the composition containing the catalyst that reacts with the composition according to the first embodiment preferably contains a volatile oil, and more preferably a volatile silicone oil. Furthermore, the composition containing the catalyst preferably contains inorganic particles, and more preferably titanium dioxide and silica (for example, Aerosil®, manufactured by Eponic).

[0131] [Composition according to the second embodiment] A composition according to the second embodiment includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica at 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, the mass of the unsaturated organopolysiloxane separated is X g, and the release ratio A of the unsaturated organopolysiloxane, calculated based on the following formula 1, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

[0132] As described above, the average particle diameter of the silica used in deriving the above release ratio A may be 1 μm or more and 10 μm or less. Preferably, the average particle diameter is 3 μm or more and 7 μm or less. The above average particle diameter refers to the particle diameter (area circle equivalent particle diameter) when converted to a circular particle having the same area as the projected area of ​​the particle observed with a transmission electron microscope. The area circle equivalent particle diameter is derived as the average value of 10 or more particles. Preferably, the oil absorption amount of the silica used in deriving the above release ratio A [mL - boiled linseed oil / 100g - silica] is 100 or more and 150 or less. The above oil absorption amount is measured in accordance with JIS-K5101:2004 Part 13 "Oil absorption amount - Section 2: Boiled linseed oil method". Preferably, the silica used in deriving the above release ratio A is hydrophobic porous silica particle that has been surface-treated with dimethicone. For example, SA-SB-300 (average particle size: 5 μm) manufactured by Miyoshi Chemical Co., Ltd. is used as the silica used to derive the release ratio A.

[0133] The composition according to the first embodiment has as a component an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C, whereas the composition according to the second embodiment has as a component an unsaturated organopolysiloxane release ratio A calculated based on Formula 1 that is greater than 0 and less than 0.2. Except for this difference, the composition according to the second embodiment may have the same configuration as the composition according to the first embodiment.

[0134] [Composition according to the third embodiment] The composition according to the third embodiment includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane is obtained by mixing 10 g of unsaturated organopolysiloxane with 5 g of oil-absorbing particles at 20°C (this step may be referred to as the "mixing step"), and then centrifuging the mixture at a centrifugal acceleration of 1,000 G for 5 minutes. When the mass of the separated unsaturated organopolysiloxane is Y g, the release ratio B of the unsaturated organopolysiloxane, calculated based on the following formula 2, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or solid composition. In the calculation of formula 2, the mass of the unsaturated organopolysiloxane may be 10 g when rounded to the first decimal place. Furthermore, the mass of the oil-absorbing particles should be 5g when rounded to the first decimal place. [Formula 2] Release ratio of unsaturated organopolysiloxanes B = Y / 10

[0135] When the average particle size of the oil-absorbing particles used to derive the above release ratio B is around 30 μm, it may take a relatively long time for oil absorption to be completed in the mixing step of the oil-absorbing particles and unsaturated organopolysiloxane. Therefore, when the average particle size of the oil-absorbing particles used to derive the above release ratio B is greater than 25 μm, instead of the mixing step in the above procedure, a step of mixing 10 g of unsaturated organopolysiloxane with 10 g of oil-absorbing particles under conditions of 20°C may be adopted. Note that the above average particle size refers to the particle size (area circle equivalent particle size) when converted to a circular particle having the same area as the projected area of ​​the particle observed with a transmission electron microscope. The area circle equivalent particle size is derived as the average value of 10 or more particles.

[0136] The composition according to the first embodiment has as a component an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt or more and 4,000 cSt or less under conditions of 20°C, whereas the composition according to the third embodiment has as a component an unsaturated organopolysiloxane release ratio B calculated based on formula 2 that is greater than 0 and less than 0.2. Except for this difference, the composition according to the third embodiment may have the same configuration as the composition according to the first embodiment.

[0137] (Two-part composition) A two-component composition according to one embodiment of the present disclosure comprises a first composition comprising a catalyst for promoting the reaction between unsaturated bonds of an unsaturated organopolysiloxane and hydride groups of a hydride-functionalized polysiloxane, and a second composition comprising the composition of the present disclosure, wherein at least one of the first composition and the second composition further comprises the hydride-functionalized polysiloxane.

[0138] In one embodiment, a two-component composition is formed by mixing a first composition and a second composition, which results in a crosslinking or hydrosilylation reaction between the unsaturated bonds in the unsaturated organopolysiloxane contained in the second composition and the hydride groups in the hydride-functionalized polysiloxane contained in the first or second composition, thereby forming a reaction product, preferably a film. At this time, since the first composition contains a catalyst, the crosslinking or hydrosilylation reaction between the unsaturated bonds in the unsaturated organopolysiloxane and the hydride groups in the hydride-functionalized polysiloxane is suitably induced, promoted, and / or initiated.

[0139] <First composition> The first composition includes a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane. The catalyst is as described in the <Catalyst> section of the composition according to the first embodiment of this disclosure.

[0140] There are no particular restrictions on the ratio of the mass of the catalyst to the mass of the first composition, and it can be appropriately selected depending on the purpose. The first composition may consist only of the catalyst (i.e., the ratio of the mass of the catalyst to the mass of the first composition is 100% by mass).

[0141] The first composition may further contain a hydride-functionalized polysiloxane. The hydride-functionalized polysiloxane is as described in the <Hydride-functionalized Polysiloxane> section of the composition according to the first embodiment of this disclosure. If the first composition consists only of a catalyst, the hydride-functionalized polysiloxane is included in the second composition.

[0142] The first composition may further contain, if necessary, other components besides the catalyst and hydride-functionalized polysiloxane. Examples of other components include those listed in the section "Other Components" of the composition according to the first embodiment of this disclosure. Among these, the first composition preferably further contains particles other than oil-absorbing particles (for example, particles that do not have the oil-absorbing properties described above in relation to the oil-absorbing particles) and oils other than unsaturated organopolysiloxane.

[0143] There are no particular restrictions on particles other than oil-absorbing particles, but it is preferable that they include inorganic particles, and more preferably titanium dioxide, iron oxide, zinc oxide, etc. These may be used individually or in combination of two or more.

[0144] As oil components other than unsaturated organopolysiloxanes, for example, those listed under the "Other Components" section of the composition according to the first embodiment of this disclosure can be used.

[0145] <Second composition> The second composition comprises the composition of the Disclosure and may further contain other components as needed. The composition of the Disclosure contained in the second composition may be the composition according to the first embodiment of the Disclosure, the composition according to the second embodiment of the Disclosure, the composition according to the third embodiment of the Disclosure, or a composition having features of any two or more embodiments.

[0146] As described above, a composition according to the first embodiment of this disclosure comprises, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane has, for example, a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C. In the above composition, the mass percentage of water is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition.

[0147] As described above, a composition according to the second embodiment of this disclosure comprises, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane is such that, when Xg is the mass of the unsaturated organopolysiloxane separated when 10g of the unsaturated organopolysiloxane is mixed with 5g of silica at 20°C and then centrifuged at a centrifugal acceleration of 1,000G for 5 minutes, the release ratio A of the unsaturated organopolysiloxane, calculated based on the following formula 1, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition. Details of the method for deriving the release ratio A may be as described above. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

[0148] As described above, the composition according to the third embodiment of this disclosure includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane is obtained by mixing 10 g of unsaturated organopolysiloxane with 5 g of oil-absorbing particles under conditions of 20°C, and then centrifuging the mixture at a centrifugal acceleration of 1,000 G for 5 minutes. When the mass of the separated unsaturated organopolysiloxane is Y g, the release ratio B of the unsaturated organopolysiloxane, calculated based on the following formula 2, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition. Details of the method for deriving the release ratio B may be as described above. [Formula 2] Release ratio of unsaturated organopolysiloxanes B = Y / 10

[0149] There are no particular restrictions on the ratio of the mass of the composition disclosed to the mass of the second composition, and it can be appropriately selected depending on the purpose. The second composition may consist solely of the composition disclosed (i.e., the ratio of the mass of the composition disclosed to the mass of the second composition is 100% by mass).

[0150] The second composition may further contain a hydride-functionalized polysiloxane. The hydride-functionalized polysiloxane is as described in the section <Hydride-functionalized Polysiloxane> of the composition according to the first embodiment of this disclosure. If the second composition consists solely of the composition of this disclosure, the hydride-functionalized polysiloxane is included in the first composition.

[0151] [[How to use]] There are no particular restrictions on the order in which the first and second compositions are applied to the object to be coated. The order can be appropriately selected depending on the purpose. The first composition may be applied to the object to be coated, and the second composition may be applied on top of the first composition. Alternatively, the second composition may be applied to the object to be coated, and the first composition may be applied on top of the second composition. Among these, since the composition of this disclosure that the second composition contains is a powder or solid composition, applying the second composition on top of the first composition is preferable from the viewpoint of uniform coating and the generation of a uniform reactant.

[0152] For example, when applying a two-component composition according to one embodiment to the skin, other cosmetics other than the first and second compositions may be applied to the target area of ​​the skin before applying the first or second composition to the skin; the first composition may be applied to the target area of ​​the skin to form a coating of the first composition, and after applying other cosmetics on the coating of the first composition, the second composition may be applied to cover the other cosmetics; the second composition may be applied to the target area of ​​the skin to form a coating of the second composition, and after applying other cosmetics on the coating of the second composition, the first composition may be applied to cover the other cosmetics; or, a film may be formed on the skin by the first and second compositions, and then other cosmetics may be applied to the film.

[0153] For example, the first composition can be used as a base coat, and the second composition can be used as a foundation or face powder.

[0154] There are no particular restrictions on the mass ratio [first composition / second composition] when applying the first composition and the second composition to the coating target, and it can be appropriately selected depending on the purpose. For example, it can be 0.5 to 2 or 2 to 0.5. By setting the mass ratio [first composition / second composition] to 0.75 to 1.25, a reactant, preferably a film, can be formed.

[0155] (Method of manufacturing silicone) [Method for manufacturing silicone according to the first embodiment] A method for producing silicone according to the first embodiment of this disclosure includes, for example, (A) placing either the first composition or the second composition on the surface of an object, and (B) placing the other of the first composition or the second composition in contact with the one of the first composition or the second composition placed in (A). In the above embodiment, the first composition includes, for example, a catalyst. The catalyst may be a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane. In the above embodiment, the second composition includes, for example, an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C, and oil-absorbing particles. In the above embodiment, the second composition may be a powder or solid composition having a water content of 5% by mass or less.

[0156] The above manufacturing method includes, for example, (C) placing a hydride-functionalized polysiloxane simultaneously with or after placing the first composition, or simultaneously with or after placing the second composition. The above manufacturing method also includes, for example, (D) reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce silicone on the surface of the object. The method for producing silicone according to the first embodiment of this disclosure may further include other processes as needed.

[0157] In the method for producing silicone according to the first embodiment of this disclosure, the second composition can preferably be the composition according to the first embodiment of this disclosure. Furthermore, the first and second compositions can preferably be the two-component compositions of this disclosure.

[0158] <(A) Arranging either the first composition or the second composition, and (B) Arranging the other of the first composition or the second composition> -Place the first composition- Placing the first composition involves, for example, placing the first composition, which contains a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, on the surface of an object.

[0159] The catalyst is as described in the section <Catalyst> of the composition according to the first embodiment of this disclosure.

[0160] The object is the object to which the first composition, the second composition, and the catalyst are applied, and examples include skin, electronic devices, and optical components. Among these, the object is preferably skin.

[0161] - Place the second composition - Placing the second composition involves placing a powdered or solid second composition containing an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C, oil-absorbing particles, and a water content of 5% by mass or less. In one embodiment, placing the second composition includes placing the second composition on top of the first composition placed on the surface of an object. This ensures that the first and second compositions are in contact on the surface of the object. In another embodiment, placing the second composition includes placing the second composition on the surface of an object.

[0162] The second composition is as described in the section (Composition) according to the first embodiment of this disclosure.

[0163] When the object is skin, applying the second composition includes, for example, applying a cosmetic containing the second composition onto the first composition placed on the surface of the skin. There are no particular limitations on the cosmetic, and examples include sunscreen cosmetics, primer cosmetics, makeup cosmetics (e.g., foundation, gloss, lipstick, eyeshadow, nail polish, etc.), skincare cosmetics (e.g., serum, lotion, emulsion, etc.), or cosmetics that combine two or more of the functions of these cosmetics. Among these, foundation or face powder is preferred as the cosmetic containing the second composition.

[0164] <(C) Hydride-functionalized polysiloxane should be placed> The placement of the hydride-functionalized polysiloxane is done simultaneously with or after the placement of the first composition, or simultaneously with or after the placement of the second composition.

[0165] When the hydride-functionalized polysiloxane is placed simultaneously with the placement of the first composition, the hydride-functionalized polysiloxane may be placed alone or in a composition different from the first composition, simultaneously with the first composition, or the hydride-functionalized polysiloxane may be pre-mixed into the first composition before placement.

[0166] When the hydride-functionalized polysiloxane is added after the first composition is added, it is preferable to add the hydride-functionalized polysiloxane alone or in a composition different from the first composition after the first composition is added. In this case, it is preferable to add the hydride-functionalized polysiloxane before adding the second composition.

[0167] When the hydride-functionalized polysiloxane is placed simultaneously with the placement of the second composition, the hydride-functionalized polysiloxane may be placed alone or in a composition different from the second composition, or the hydride-functionalized polysiloxane may be pre-mixed into the second composition before placement.

[0168] When the hydride-functionalized polysiloxane is added after the second composition is added, it is preferable to add the hydride-functionalized polysiloxane alone or in a composition different from the second composition after the second composition is added.

[0169] In arranging the first composition, arranging the second composition, and arranging the hydride-functionalized polysiloxane, there are no particular restrictions on the amounts of the first composition, the second composition, and the hydride-functionalized polysiloxane used, and they can be appropriately selected according to the purpose. The entire amount prepared in the preparation described later may be used, or only a portion thereof may be used.

[0170] <(D) Manufacturing silicone> The process of creating silicone involves reacting the unsaturated bonds of an unsaturated organopolysiloxane with the hydride groups of a hydride-functionalized polysiloxane to produce silicone on the surface of an object.

[0171] There are no particular restrictions on the temperature and time required for producing silicone; they can be appropriately selected depending on the type of catalyst. If the catalyst causes a crosslinking reaction at temperatures below body temperature, silicone can be produced at room temperature (25°C ± 5°C). Furthermore, if the material is skin (body surface), a film can be formed at body temperature.

[0172] The resulting silicone is a composition containing a three-dimensionally crosslinked silicone elastomer. The prepared silicone includes both a visually observable film-like form and a form that is not visually observable, as described in the section on compositions in this disclosure.

[0173] If the fabricated silicone is in the form of a film, there are no particular restrictions on its film thickness, size, etc., and these can be appropriately selected according to the purpose.

[0174] There are no particular restrictions on the lower limit of the film thickness of the silicone film; for example, it can be 1 μm or more, 5 μm or more, 10 μm or more, 30 μm or more, 50 μm or more, 70 μm or more, 90 μm or more, 100 μm or more, 110 μm or more, 120 μm or more, 130 μm or more, 140 μm or more, or 150 μm or more. There are no particular restrictions on the upper limit of the film thickness of the silicone film. For example, the upper and lower limits of the film thickness can be set to 300 μm or less, 250 μm or less, or 200 μm or less. These can be combined as appropriate. Examples include 1 μm to 300 μm, 5 μm to 300 μm, 10 μm to 300 μm, 30 μm to 300 μm, 50 μm to 300 μm, 70 μm to 300 μm, 90 μm to 300 μm, 100 μm to 300 μm, 110 μm to 250 μm, 120 μm to 250 μm, 130 μm to 200 μm, 140 μm to 200 μm, or 150 μm to 200 μm.

[0175] <Other processing> Other processing methods are not particularly limited and may include, for example, preparing the first composition, the second composition, the hydride-functionalized polysiloxane, and other components as needed.

[0176] Preparation may involve purchasing commercially available versions of the first composition, the second composition, and the hydride-functionalized polysiloxane, as well as other components as needed, or it may involve preparing or synthesizing the first composition, the second composition, and the hydride-functionalized polysiloxane, as well as other components as needed, by known methods. The first composition, the second composition, and the hydride-functionalized polysiloxane, as well as other components as needed, are as described in the (Compositions) section of this disclosure.

[0177] [[Application]] The method for producing silicone according to the first embodiment of this disclosure can be suitably used as a method for forming silicone on the surface of an object, preferably the surface of skin, the surface of an electronic device, etc. When the object is skin, the method for producing silicone according to the first embodiment can be suitably used as a cosmetic method.

[0178] Furthermore, if the object is skin, the method for manufacturing silicone according to the first embodiment can also be used as a cosmetic method. In this disclosure, "cosmetic method" means applying silicone to skin to form and beautify the condition of the skin or a method for beautifying the condition of the skin, and is different from a method of surgery, treatment, or diagnosis of a human being.

[0179] [Method for manufacturing silicone according to the second embodiment] A method for producing silicone according to a second embodiment of this disclosure includes, for example, (A) placing either the first composition or the second composition on the surface of an object, and (B) placing the other of the first composition or the second composition in contact with the one of the first composition or the second composition placed in (A). In the above embodiment, the first composition includes, for example, a catalyst. In the above embodiment, the catalyst may be a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane. In the above embodiment, the second composition includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above embodiment, the second composition may be a powder or solid composition having a water content of 5% by mass or less. The above-mentioned unsaturated organopolysiloxane is selected or blended such that, when X g is the mass of the unsaturated organopolysiloxane separated by mixing 10 g of the unsaturated organopolysiloxane with 5 g of silica under conditions of 20°C and then centrifuging at a centrifugal acceleration of 1,000 G for 5 minutes, the release ratio A of the unsaturated organopolysiloxane, calculated according to the following formula 1, is, for example, greater than 0 and less than 0.2. The details of the method for deriving the release ratio A may be as described above. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

[0180] The above manufacturing method includes, for example, (C) placing a hydride-functionalized polysiloxane simultaneously with or after placing the first composition, or simultaneously with or after placing the second composition. The above manufacturing method also includes, for example, (D) reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce silicone on the surface of the object. The method for producing silicone according to the second embodiment of this disclosure may further include other processes as needed.

[0181] The silicone manufacturing method according to the first embodiment has as a component an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C, whereas the silicone manufacturing method according to the second embodiment has as a component an unsaturated organopolysiloxane release ratio A calculated based on formula 1 that is greater than 0 and less than 0.2. Except for this difference, the silicone manufacturing method according to the second embodiment may have the same configuration as the silicone manufacturing method according to the first embodiment.

[0182] [Method for manufacturing silicone according to the third embodiment] A method for producing silicone according to a third embodiment of this disclosure includes, for example, (A) placing either the first composition or the second composition on the surface of an object, and (B) placing the other of the first composition or the second composition in contact with the one of the first composition or the second composition placed in (A). In the above embodiment, the first composition includes, for example, a catalyst. In the above embodiment, the catalyst may be a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane. In the above embodiment, the second composition includes, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above embodiment, the second composition may be a powder or solid composition having a water content of 5% by mass or less. The above-mentioned unsaturated organopolysiloxane and oil-absorbing particles are selected or blended such that, when Yg is the mass of unsaturated organopolysiloxane separated after mixing 10g of unsaturated organopolysiloxane with 5g of oil-absorbing particles under conditions of 20°C and centrifugation at a centrifugal acceleration of 1,000G for 5 minutes, the release ratio B of the unsaturated organopolysiloxane, calculated according to the following formula 2, is, for example, greater than 0 and less than 0.2. The details of the method for deriving the release ratio B may be as described above. [Formula 2] Release ratio of unsaturated organopolysiloxanes B = Y / 10

[0183] The above manufacturing method includes, for example, (C) placing a hydride-functionalized polysiloxane simultaneously with or after placing the first composition, or simultaneously with or after placing the second composition. The above manufacturing method also includes, for example, (D) reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce silicone on the surface of the object. The method for producing silicone according to the third embodiment of this disclosure may further include other processes as needed.

[0184] The silicone manufacturing method according to the first embodiment has as a component an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C, whereas the silicone manufacturing method according to the third embodiment has as a component an unsaturated organopolysiloxane release ratio B calculated based on formula 2 being greater than 0 and less than 0.2. Except for this difference, the silicone manufacturing method according to the third embodiment may have the same configuration as the silicone manufacturing method according to the first embodiment.

[0185] (kit) A kit according to one embodiment of the present disclosure comprises a composition of the present disclosure, a first document describing a method of using the composition, and / or a second document describing a uniform resource locator of the first document, wherein the method of using the composition described in the first document includes at least a portion of a method for producing the silicone of the present disclosure. The kit according to one embodiment may further comprise other components as needed.

[0186] In the kit of this disclosure, the second composition may be the composition according to the first embodiment of this disclosure, the composition according to the second embodiment of this disclosure, the composition according to the third embodiment of this disclosure, or a composition having features of any two or more embodiments. Furthermore, the kit of this disclosure may comprise the two-component composition of this disclosure as the first and second compositions.

[0187] In this disclosure, "kit" means that each component of the kit exists independently. For example, a kit is not limited to cases where a component containing at least one of the compositions according to the first and second embodiments of this disclosure, and other components as needed, are manufactured and sold as an integrated unit. For example, even if a kit consists of a component containing at least one of the compositions according to the first, second, and third embodiments of this disclosure, and other components as needed, manufactured and sold independently, it is included in the kit of this disclosure if it is assumed that the component containing at least one of the compositions according to the first, second, and third embodiments of this disclosure, and other components as needed, will be used in combination, or if it substantially induces the combined use of the component containing at least one of the compositions according to the first, second, and third embodiments of this disclosure, and other components as needed.

[0188] <<Composition>> In a kit according to one embodiment, the composition according to the first embodiment of the present disclosure comprises, as described above, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane has, for example, a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C. In the above composition, the mass percentage of water is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition.

[0189] Furthermore, in a kit according to one embodiment, the composition according to the second embodiment of this disclosure includes, as described above, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica at 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, the mass of the separated unsaturated organopolysiloxane is X g, and the release ratio A of the unsaturated organopolysiloxane, calculated based on the following formula 1, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition. Details of the method for deriving the release ratio A may be as described above. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

[0190] Furthermore, in a kit according to one embodiment, the composition according to the third embodiment of this disclosure includes, as described above, for example, an unsaturated organopolysiloxane and oil-absorbing particles. In the above composition, the unsaturated organopolysiloxane is obtained by mixing 10 g of unsaturated organopolysiloxane with 5 g of oil-absorbing particles under conditions of 20°C, and then centrifuging at a centrifugal acceleration of 1,000 G for 5 minutes. When the mass of the separated unsaturated organopolysiloxane is Y g, the release ratio B of the unsaturated organopolysiloxane, calculated based on the following formula 2, is, for example, greater than 0 and less than 0.2. In the above composition, the proportion of water by mass is, for example, 5% by mass or less. The above composition is, for example, a powder or a solid composition. Details of the method for deriving the release ratio B may be as described above. [Formula 2] Release ratio of unsaturated organopolysiloxanes B = Y / 10

[0191] In a kit according to one embodiment, at least one of the compositions according to the first embodiment, the second embodiment, and the third embodiment of the present disclosure may further contain a catalyst for promoting the reaction between the unsaturated bonds contained in the hydride-functionalized polysiloxane and the unsaturated organopolysiloxane and the hydride groups contained in the hydride-functionalized polysiloxane, and may further contain other components as needed.

[0192] In one embodiment of the kit, it is preferable that at least one of the compositions according to the first embodiment, the second embodiment, and the third embodiment of the disclosure contains a hydride-functionalized polysiloxane, and that a catalyst for promoting the reaction between the unsaturated bonds in the unsaturated organopolysiloxane and the hydride groups in the hydride-functionalized polysiloxane is included as a separate composition.

[0193] <<Document 1>> The first document is a document describing a method for manufacturing the silicone of the present disclosure. In addition to general documents attached in the form of papers within the kit, the first document may also include, for example, a package container containing the kit, a tube for injecting at least one of the compositions according to the first embodiment of the present disclosure, the composition according to the second embodiment, and the composition according to the third embodiment, etc., with instructions printed on it.

[0194] <<Second Document>> The second document is a document that lists the uniform resource locators from the first document. There are no particular restrictions on the format of the uniform resource locators.

[0195] <<Other components>> Other components include, for example, at least one of the compositions according to the first embodiment, the second embodiment, and the third embodiment of this disclosure, preferably further including a member for applying a catalyst, a cutter, scissors, various cosmetics to be used before using the kit, a silicone remover for removing the silicone formed using the kit from the application surface, a mirror, and the like.

[0196] In one embodiment, the kit may contain a container for the composition according to the first embodiment of the disclosure, a container for the composition according to the second embodiment of the disclosure, a container for the composition according to the third embodiment of the disclosure, a container for the hydride-functionalized polysiloxane or a composition containing the same, and a container for the catalyst or a composition containing the same, each contained in separate containers or in each compartment of a container having two or more compartments. This prevents contact between the components. Furthermore, these contained agents may be configured to be applied one at a time, or they may be configured to be mixed together before or during use.

[0197] -Component for applying the composition- The composition according to the first embodiment, the composition according to the second embodiment, and the composition according to the third embodiment of this disclosure, preferably further, is not particularly limited and can be appropriately selected depending on the purpose. Examples include puffs, sprayers, sponges, brushes, silicone spatulas or brushes. The kit may contain only one of these, or two or more. By providing two or more, an appropriate application tool can be selected depending on the application target, especially the area of ​​the body surface.

[0198] -Silicone remover- A silicone remover included in a kit according to one embodiment is a silicone remover for removing silicone formed by at least one of the compositions according to the first embodiment, the second embodiment, and the third embodiment of this disclosure. In one embodiment, the silicone formed using the kit can be used in combination with a silicone remover for removing the silicone from the coated object. Here, "used in combination" includes using the kit and the silicone remover as a single unit, i.e., encapsulating the silicone remover within the kit, or using the kit and the silicone remover separately.

[0199] Using the kit of this disclosure, silicone formed on an object, particularly on the body surface, can be suitably removed from the object without damaging the silicone by using the specific silicone remover described below.

[0200] A suitable silicone remover used to remove silicone formed using the kit of this disclosure preferably contains at least one selected from the group consisting of hydrocarbon oils with a weight-average molecular weight of 300 to 800 and polar oils with a weight-average molecular weight of 260 to 400, and more preferably uses both hydrocarbon oils and polar oils in combination from the viewpoint of effectively removing silicone.

[0201] --Hydroxide oil-- The weight-average molecular weight of the hydrocarbon oil is preferably 320 or more, 350 or more, more preferably 380 or more, and preferably 750 or less, 700 or less, and more preferably 690 or less, from the viewpoint of suitably removing silicone. The hydrocarbon oil can be used alone or in combination of two or more types. Here, "weight-average molecular weight" in this disclosure refers to the weight-average molecular weight in terms of polystyrene as measured by gel permeation chromatography.

[0202] There are no particular restrictions on the type of hydrocarbon oil; examples include liquid paraffin (mineral oil), olefin oligomers and their hydrogenated products (e.g., hydrogenated polydecene), and squalane.

[0203] There are no particular restrictions on the ratio of hydrocarbon oil to the total mass of the silicone remover. For example, from the viewpoint of suitably removing silicone, it can be 1.0% by mass or more, 5.0% by mass or more, 10% by mass or more, 20% by mass or more, or 30% by mass or more. There are also no particular restrictions on the upper limit of the ratio of hydrocarbon oil to the total mass of the silicone remover. For example, it can be 100% by mass or less, less than 100% by mass, 80% by mass or less, 70% by mass or less, 60% by mass or less, or 50% by mass or less. The upper and lower limits of the ratio of hydrocarbon oil to the total mass of the silicone remover can be combined as appropriate.

[0204] --Polar oil-- From the viewpoint of effectively removing silicone, the weight-average molecular weight of the polar oil is preferably 265 or higher or 270 or higher at the lower limit, and preferably 390 or lower, 380 or lower, or 370 or lower at the upper limit. From the viewpoint of effectively removing silicone, the IOB value of the polar oil is preferably 0.12 or higher or 0.13 or higher at the lower limit, and preferably 1.48 or lower, 1.47 or lower, or 1.46 or lower at the upper limit. The polar oil may be used alone or in combination of two or more types.

[0205] Here, the IOB value is an abbreviation for Inorganic / Organic Balance, and it is a value that represents the ratio of inorganic value to organic value, and serves as an indicator of the degree of polarity of an organic compound. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. For each of the "inorganic value" and "organic value," for example, one carbon atom in a molecule has an "organic value" of 20, and one hydroxyl group has an "inorganic value" of 100. The "inorganic value" and "organic value" are set according to each atom or functional group, and the IOB value of an organic compound can be calculated by summing the "inorganic value" and "organic value" of all atoms and functional groups in the organic compound (see, for example, Yoshio Koda, "Organic Concept Diagram - Fundamentals and Applications," pp. 11-17, Sankyo Publishing, 1984).

[0206] There are no particular restrictions on the type of polar oil; for example, ester oils can be used. Specific examples include isopropyl myristate (IOB value = 0.18), ethylhexyl ethylhexanoate (IOB value = 0.20), alkyl benzoate (12-15 carbon atoms) (IOB value = 0.18), diethylhexyl succinate (IOB value = 0.32), neopentyl glycol diheptanoate (IOB value = 0.33), caprylic / capric triglyceride (IOB value = 0.28), and PPG-3 dipivalate (IOB value = 1.46), octyl palmitate (IOB value = 0.13), etc. These may be used individually or in combination of two or more.

[0207] There are no particular restrictions on the ratio of the mass of polar oil to the total mass of the silicone remover. For example, from the viewpoint of suitably removing silicone, the lower limit can be 1.0% by mass or more, 5.0% by mass or more, 10% by mass or more, 15% by mass or more, or 20% by mass or more. There are also no particular restrictions on the upper limit of the ratio of the mass of polar oil to the total mass of the silicone remover. For example, it can be 100% by mass or less, less than 100% by mass, 80% by mass or less, 70% by mass or less, 60% by mass or less, or 50% by mass or less.

[0208] --Other ingredients-- Silicone removers may contain other components besides hydrocarbon oils and polar oils. There are no particular limitations on the other components in a silicone remover, and examples include surfactants (emulsifiers), humectants, thickeners, water-soluble polymers, oil-soluble polymers, silicone-forming agents, higher fatty acids, metal ion chelating 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 oils other than hydrocarbon oils and polar oils. These may be used individually or in combination of two or more.

[0209] Silicone removers may contain oils other than hydrocarbon oils and polar oils. However, silicone oils may reduce the strength of silicone, which may result in a decrease in the silicone removal performance. Therefore, from the viewpoint of suitably removing silicone, the mass percentage of silicone oil is preferably 10% by mass or less, 5.0% by mass or less, 1.0% by mass or less, 0.5% by mass or less, or 0.1% by mass or less, relative to the total mass of the silicone remover, and it is more preferable that silicone oil is not included in the composition constituting the silicone remover.

[0210] --Instructions for using silicone remover-- There are no particular restrictions on how silicone removers are used. Generally, silicone removers can be applied to part or all of the silicone formed on an object and used by rubbing or other means as desired. The silicone can then be removed by pulling it off with your fingers or other means.

[0211] [[Application]] A kit according to one embodiment can be suitably used as a kit for forming silicone on skin, electronic devices, or objects. Specific examples are the same as those described in the (Composition) section of the first embodiment of this disclosure. [Examples]

[0212] The embodiments will be described in more detail below with reference to examples and comparative examples, but the embodiments are not limited to these examples and comparative examples. In the examples and comparative examples, unless otherwise specified, the amounts of each ingredient are expressed as "mass%" relative to the mass of the composition.

[0213] (Example 1) <Preparation of the first composition> The first composition was prepared based on the composition and proportions listed in Table 1. Specifically, 66.5% vinyl dimethicone (Andisil® VS200, AB Specialty Silicones) with a kinematic viscosity of 200 cSt as an unsaturated organopolysiloxane at a final concentration, and 33.5% hydrophilic silica (Sunsphere L-51, average particle size: 5 μm, manufactured by AGC SI-TEC Co., Ltd.) as oil-absorbing particles were manually mixed, and then mixed for 120 seconds using a stirring and defoaming device (Mazelstar, manufactured by Kurabo Industries Ltd.) to prepare the first composition. The obtained first composition of Example 1 was in powder form.

[0214] (Examples 2-14 and Comparative Examples 1-14) The first compositions of Examples 2-14 and Comparative Examples 1-14 were prepared in the same manner as in Example 1, except that the composition and amounts were changed as shown in Tables 2-4, respectively, in the preparation of the first composition of Example 1. The obtained first compositions of Examples 2-14 and Comparative Examples 1-14 were all in powder form.

[0215] The product information for each ingredient used is as follows: -Unsaturated organopolysiloxane- • Vinyl dimethicone with a kinematic viscosity of 50 cSt (Andisil® VS50, AB Specialty Silicones) • Vinyl dimethicone with a kinematic viscosity of 5000 cSt (Andisil® VS5000, AB Specialty Silicones) -Oil-absorbing particles- • Hydrophilic silica (average particle size: 1 μm to 2 μm) • Hydrophobic silica (dimethicone treated) (SA-SB-300, average particle size: 5 μm, manufactured by Miyoshi Chemical Co., Ltd.) • (Vinyl dimethicone / methicone silsesquioxane) crosspolymer (KSP-100, average particle size: 5 μm, manufactured by Shin-Etsu Silicone Co., Ltd.) • (Vinyl dimethicone / methicone silsesquioxane) crosspolymer (KSP-102, average particle size: 30 μm, manufactured by Shin-Etsu Silicone Co., Ltd.) • Synthetic mica (average particle size: 3 μm) • Natural mica (average particle size: 3μm)

[0216] (Preparation Example 1) <Preparation of the second composition> A second composition was prepared by uniformly mixing 5% of hydrogen dimethicone (Andisil® XL-11, kinematic viscosity: 45 cSt, manufactured by AB Specialty Silicones) as a hydride-functionalized polysiloxane and 2% of platinum catalyst (Karstedt's catalyst, 1,000 cSt, SILTECH K-VP, manufactured by Siltech) at their respective final concentrations using a disperser (Labo-Solution®, manufactured by Primix Corporation) at 3,000 rpm.

[0217] [Evaluation Method] The first compositions prepared in Examples 1-14 and Comparative Examples 1-14 were evaluated for "release of unsaturated organopolysiloxane after 5 minutes" and "stability" using the following methods. Furthermore, the first and second compositions prepared in Examples 1-14 and Comparative Examples 1-14 were evaluated for "film formation rate" and "uniformity of coating." The evaluation results are shown in Tables 1-4.

[0218] <Evaluation of release property of unsaturated organopolysiloxane after 5 minutes> 15 g of the first composition (containing 10 g of unsaturated organopolysiloxane and 5 g of oil-absorbent particles) was placed in a centrifuge tube, and centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes. The mass of the obtained supernatant was weighed. The supernatant separated by centrifugation corresponds to the unsaturated organopolysiloxane released from the oil-absorbent particles. Let Y g be the mass of the unsaturated organopolysiloxane separated in the first composition, and the release ratio B of the unsaturated organopolysiloxane was determined based on the following formula 2. [Formula 2] Release ratio B of unsaturated organopolysiloxane = Y / 10

[0219] Further, from the release ratio B, the release property of the unsaturated organopolysiloxane after 5 minutes was evaluated based on the following evaluation criteria. Evaluations A and B are within the practically applicable range. - Evaluation criteria for "release property of unsaturated organopolysiloxane after 5 minutes" - A: Release ratio B is 5% or more and 15% or less B: Release ratio B is 1% or more and less than 5%, or more than 15% and less than 20% C: Release ratio B is less than 1% or 20% or more

[0220] <Evaluation of stability> 20 g of the first composition was placed in a 100 mL capacity vial, the lid was closed for sealing, and the vial was allowed to stand at 25°C for 7 days. After 7 days, one professional evaluator performed visual confirmation, and the stability of the first composition was evaluated based on the following evaluation criteria. Evaluations A and B are within the practically applicable range. - Evaluation criteria for "stability" - A: The first composition maintains a powdery state, and there is no change in appearance B: No separation of the unsaturated organopolysiloxane is observed, but slight wetting of the powder properties of the first composition is observed C: Separation of the unsaturated organopolysiloxane can be confirmed

[0221] <Evaluation of film-forming rate and coating uniformity> <<Preparation of Membrane>> -Preparation Step- A natural rubber sheet (THERABAND, manufactured by Sakai Medical Co., Ltd.) was attached to a methyl methacrylate (PMMA) plate to produce Substrate A having a square surface with dimensions of 5 cm in length × 5 cm in width. A square application area of 3 cm in length × 3 cm in width was determined at the central portion on Substrate A, and the peripheral region of Substrate A outside the application area was masked with masking tape. In addition, two polypropylene films with a thickness of 0.2 mm and dimensions of about 31 cm in length × about 22 cm in width were prepared. A square opening of 3 cm in length × 3 cm in width was formed in the central portion of each of these films (the region corresponding to the application area of Substrate A).

[0222] -Application of Second Composition- Substrate A was placed on a flat, horizontal surface. Further, one of the two films described above (Film B) was placed on Substrate A such that the opening of Film B aligned with the application region of Substrate A. Next, 200 mg of the second composition prepared in Preparation Example 1 was poured into the inside of the opening of Film B. In addition, using a glass slide with dimensions of about 26 mm in length × about 76 mm in width × about 1.3 mm in thickness, the second composition overflowing from the opening of Film B was removed, so that the upper surface of the second composition was adjusted to be flat.

[0223] -Application of First Composition- The second film (Film C) was placed on Film B such that the opening of Film C aligned with the opening of Film B (that is, the application region of the second composition on Substrate A). Next, 200 mg of each of the first compositions prepared in Examples 1 to 14 and Comparative Examples 1 to 14 was applied to the inside of the opening of Film C using a puff. Further, using the glass slide described above, the first composition leaking from the opening of Film C was removed, so that the upper surface of the first composition was adjusted to be flat.

[0224] -Formation of Membrane- Films B and C, and the masking tape were removed from substrate A. Next, substrate A, coated with the first and second compositions, was placed on a hot plate at 32°C. More specifically, substrate A was placed on the hot plate such that the side of substrate A opposite to the side coated with the first and second compositions was in contact with the heating surface of the hot plate. Under conditions of a relative humidity of 35±5%, substrate A was left on the hot plate for 5 minutes to allow the reaction of the first and second compositions to proceed and to dry the film obtained by the reaction.

[0225] <<Evaluation of film deposition rate>> One expert evaluator began counting time from the moment the first composition was applied onto the second composition during the coating process of the first composition, and during the film formation process, visually observed the film formation and measured the time until the film was formed. Based on the measured time results, the film formation rate was evaluated according to the evaluation criteria below. Evaluations A and B represent the range that is particularly practical for applications forming a visible film mainly composed of silicone. -Evaluation Criteria for "Film Deposition Rate"- A: The time from the start of applying the first composition to the second composition until a film is formed is 300 seconds or less. B: The time from the start of application of the first composition onto the second composition until a film is formed is between 300 seconds and 600 seconds or less. C: The time from the start of application of the first composition onto the second composition until a film is formed exceeds 600 seconds, or no film is formed.

[0226] <<Evaluation of coating uniformity>> Ten expert evaluators visually confirmed the uniformity of the application of the first composition during the coating process. In the sensory evaluation, each expert evaluator visually inspected the powder of the first composition after application and evaluated the degree of unevenness and unevenness of the powder. Each expert evaluator evaluated either the unevenness or unevenness of the powder of the first composition on a four-point scale: "none," "little" (acceptable), "somewhat," and "present." Based on the results of the sensory evaluation, the uniformity of the application was evaluated according to the evaluation criteria below. Ratings A and B represent the range of practical usability. - Evaluation criteria for "uniformity of application" - A: Seven or more out of ten people answered "none" or "few." B: Between 4 and 6 out of 10 people answered "none" or "few." C: Three or fewer out of ten people answered "none" or "few."

[0227] [Table 1]

[0228] [Table 2]

[0229] [Table 3]

[0230] [Table 4]

[0231] Examples of the types of disclosures include the following: <1> Unsaturated organopolysiloxanes and Oil-absorbing particles and Includes, The unsaturated organopolysiloxane has a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C. The mass proportion of water is 5% by mass or less, and the composition is in a powdery or solid form. <2> The unsaturated organopolysiloxane as described above is Under the condition of 20°C, after mixing 10 g of the unsaturated organopolysiloxane with 5 g of silica, and then performing centrifugation for 5 minutes at a centrifugal acceleration of 1,000 G, when the mass of the unsaturated organopolysiloxane separated is defined as X g, the release ratio A of the unsaturated organopolysiloxane calculated based on the following formula 1 is more than 0 and less than 0.2, which is the composition according to the above <1>. [Formula 1] Release ratio A of unsaturated organopolysiloxane = X / 10 <3> The unsaturated organopolysiloxane as described above is Under the condition of 20°C, after mixing 10 g of the unsaturated organopolysiloxane with 5 g of the oil-absorbent particles, and then performing centrifugation for 5 minutes at a centrifugal acceleration of 1,000 G, when the mass of the unsaturated organopolysiloxane separated is defined as Y g, the release ratio B of the unsaturated organopolysiloxane calculated based on the following formula 2 is more than 0 and less than 0.2, which is the composition according to the above <1> or <2>. [Formula 2] Release ratio B of unsaturated organopolysiloxane = Y / 10 <4> The oil absorption amount of the oil-absorbent particles is 50 mL / 100 g or more, which is the composition according to any one of the above <1> to <3>. <5> The mass ratio of the unsaturated organopolysiloxane to the total mass of the unsaturated organopolysiloxane and the oil-absorbent particles is 0.3% by mass or more and 40% by mass or less, which is the composition according to any one of the above <1> to <4>. <6> The mass ratio of the oil-absorbent particles to the total mass of the unsaturated organopolysiloxane and the oil-absorbent particles is 40% by mass or more and 100% by mass or less, which is the composition according to any one of the above <1> to <5>. <7> The ratio of the mass of the unsaturated organopolysiloxane to the mass of the composition is 0.5% by mass or more and 10% by mass or less. <1> from <6> The composition is one of the items described in any one of the following paragraphs. <8> The ratio of the mass of the oil-absorbing particles to the mass of the composition is 20% by mass or more and 85% by mass or less. <1> from <7> The composition is one of the items described in any one of the following paragraphs. <9> The composition is a film-forming agent, <1> from <8> The composition is one of the items described in any one of the following paragraphs. <10> The following is used to form a film by a crosslinking reaction or hydrosilylation reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, in the presence of a catalyst to promote the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, <9> The composition is as described above. <11> The above further comprises a hydride-functionalized polysiloxane. <1> from <9> The composition is one of the items described in any one of the following paragraphs. <12> The ratio of the mass of the hydride-functionalized polysiloxane to the mass of the composition is 10% by mass or less. <11> The composition is as described above. <13> Unsaturated organopolysiloxanes and Oil-absorbing particles and Includes, The aforementioned unsaturated organopolysiloxane is When 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica under conditions of 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, if the mass of the separated unsaturated organopolysiloxane is X g, then the release ratio A of the unsaturated organopolysiloxane, calculated based on the following formula 1, is greater than 0 and less than 0.2. The composition is in powder or solid form and contains 5% by mass or less of water. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10 <14> The aforementioned <1> from <13> A cosmetic containing the composition described in any one of the items. <15> A first composition comprising a catalyst for promoting the reaction between the unsaturated bonds of an unsaturated organopolysiloxane and the hydride groups of a hydride-functionalized polysiloxane, The aforementioned <1> from <10> A second composition comprising the composition described in any one of the following items, Includes, At least one of the first composition and the second composition is a two-component composition further comprising the hydride-functionalized polysiloxane. <16> The first composition further comprises particles other than the oil-absorbing particles, <15> It is a two-component composition as described above. <17> The first composition further comprises an oil other than the unsaturated organopolysiloxane, <15> or <16> It is a two-component composition as described above. <18> The method involves placing a first composition containing a catalyst to promote the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane on the surface of an object, and placing a second composition in powder or solid form containing an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C, oil-absorbing particles, and a water content of 5% by mass or less. The hydride-functionalized polysiloxane is arranged simultaneously with or after the arrangement of the first composition, or simultaneously with or after the arrangement of the second composition. The process involves reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce a silicone on the surface of the object, This is a method for producing silicone, which includes [the specified ingredient]. <19> The method involves placing a first composition containing a catalyst to promote the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane on the surface of an object, and placing a second composition in powder or solid form containing an unsaturated organopolysiloxane whose release ratio A, calculated based on the following formula 1, is greater than 0 and less than 0.2, when the mass of the unsaturated organopolysiloxane separated when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica under conditions of 20°C and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes is X g, and oil-absorbing particles, with a water content of 5% by mass or less. The hydride-functionalized polysiloxane is arranged simultaneously with or after the arrangement of the first composition, or simultaneously with or after the arrangement of the second composition. The process involves reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce a silicone on the surface of the object, This is a method for producing silicone, which includes [the specified ingredient]. <20> The object is skin, <18> or <19> This is a method for producing silicone as described above. <21> The aforementioned <1> from <13> A composition according to any one of the items, A first document describing the method of using the composition, and / or a second document describing the uniform resource locator of the first document, Equipped with, The method of using the composition described in the first document is the <18> or <19> This is a kit that includes at least part of the method described in [the document].

[0232] As described above, this disclosure has been explained based on specific embodiments and examples, but these embodiments and examples are merely presented as examples, and this disclosure is not limited to the above embodiments and examples. The above embodiments can be implemented in various other forms, and various combinations, omissions, substitutions, additions, modifications, etc., are possible without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents.

Claims

1. Unsaturated organopolysiloxanes and Oil-absorbing particles, Includes, The unsaturated organopolysiloxane has a kinematic viscosity of 100 cSt or more and 4,000 cSt or less at 20°C. A powdered or solid composition in which the mass percentage of water is 5% by mass or less.

2. The aforementioned unsaturated organopolysiloxane is The composition according to claim 1, wherein, when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica under conditions of 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, the mass of the unsaturated organopolysiloxane separated is X g, and the release ratio A of the unsaturated organopolysiloxane calculated based on the following formula 1 is greater than 0 and less than 0.

2. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

3. The aforementioned unsaturated organopolysiloxane is The composition according to claim 1, wherein, when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of the oil-absorbing particles under conditions of 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, the mass of the unsaturated organopolysiloxane separated is Y g, and the release ratio B of the unsaturated organopolysiloxane calculated based on the following formula 2 is greater than 0 and less than 0.

2. [Formula 2] Release ratio of unsaturated organopolysiloxane B = Y / 10

4. The composition according to claim 1, wherein the amount of oil absorbed by the oil-absorbing particles is 50 mL / 100 g or more.

5. The composition according to claim 1, wherein the ratio of the mass of the unsaturated organopolysiloxane to the total mass of the unsaturated organopolysiloxane and the oil-absorbing particles is 0.3% by mass or more and 40% by mass or less.

6. The composition according to claim 1, wherein the ratio of the mass of the oil-absorbing particles to the total mass of the unsaturated organopolysiloxane and the oil-absorbing particles is 40% by mass or more and less than 100% by mass.

7. The composition according to claim 1, wherein the ratio of the mass of the unsaturated organopolysiloxane to the mass of the composition is 0.5% by mass or more and 10% by mass or less.

8. The composition according to claim 1, wherein the ratio of the mass of the oil-absorbing particles to the mass of the composition is 20% by mass or more and 85% by mass or less.

9. The composition according to claim 1, wherein the composition is a film-forming agent.

10. The composition according to claim 9, used to form a film by a crosslinking reaction or hydrosilylation reaction between an unsaturated bond of the unsaturated organopolysiloxane and a hydride group of the hydride-functionalized polysiloxane, in the presence of a catalyst to promote the reaction between the unsaturated bond of the unsaturated organopolysiloxane and the hydride group of the hydride-functionalized polysiloxane.

11. The composition according to claim 1, further comprising a hydride-functionalized polysiloxane.

12. The composition according to claim 11, wherein the ratio of the mass of the hydride-functionalized polysiloxane to the mass of the composition is 10% by mass or less.

13. Unsaturated organopolysiloxanes and Oil-absorbing particles, Includes, The aforementioned unsaturated organopolysiloxane is When 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica under conditions of 20°C, and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes, if the mass of the separated unsaturated organopolysiloxane is X g, then the release ratio A of the unsaturated organopolysiloxane, calculated based on the following formula 1, is greater than 0 and less than 0.

2. A powdered or solid composition in which the mass percentage of water is 5% by mass or less. [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

14. A cosmetic comprising the composition according to any one of claims 1 to 13.

15. A first composition comprising a catalyst for promoting the reaction between the unsaturated bonds of an unsaturated organopolysiloxane and the hydride groups of a hydride-functionalized polysiloxane, A second composition comprising the composition according to any one of claims 1 to 10, Includes, A two-component composition comprising at least one of the first composition and the second composition further comprising the hydride-functionalized polysiloxane.

16. The two-component composition according to claim 15, wherein the first composition further comprises particles other than the oil-absorbing particles.

17. The two-component composition according to claim 15, wherein the first composition further comprises an oil other than the unsaturated organopolysiloxane.

18. (A) Placing either (a) a first composition containing a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, or (b) a second composition in powder or solid form containing an unsaturated organopolysiloxane having a kinematic viscosity of 100 cSt to 4,000 cSt at 20°C, oil-absorbing particles, and having a water content of 5% by mass or less, on the surface of an object. (B) Arrange the other of the first composition and the second composition so as to be in contact with either the first composition or the second composition arranged in (A), (C) Simultaneously or after the placement of the first composition, or simultaneously or after the placement of the second composition, the hydride-functionalized polysiloxane is placed. (D) Reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce silicone on the surface of the object, A method for producing silicone, including

19. (A) Placing either (a) a first composition containing a catalyst for promoting the reaction between the unsaturated bonds of the unsaturated organopolysiloxane and the hydride groups of the hydride-functionalized polysiloxane, and (b) a second composition in powder or solid form containing an unsaturated organopolysiloxane whose release ratio A, calculated based on the following formula 1, is greater than 0 and less than 0.2, when the mass of the unsaturated organopolysiloxane separated when 10 g of the unsaturated organopolysiloxane is mixed with 5 g of silica at 20°C and then centrifuged at a centrifugal acceleration of 1,000 G for 5 minutes is X g, and oil-absorbing particles, with a water content of 5% by mass or less, on the surface of an object. (B) Arrange the other of the first composition and the second composition so as to be in contact with either the first composition or the second composition arranged in (A), (C) Simultaneously or after the placement of the first composition, or simultaneously or after the placement of the second composition, the hydride-functionalized polysiloxane is placed. (D) Reacting the unsaturated bonds of the unsaturated organopolysiloxane with the hydride groups of the hydride-functionalized polysiloxane to produce silicone on the surface of the object, A method for producing silicone, including [Formula 1] Release ratio of unsaturated organopolysiloxane A = X / 10

20. The method for producing silicone according to claim 18 or 19, wherein the object is skin.

21. A composition according to any one of claims 1 to 13, A first document describing a method of using the composition, and / or a second document describing the uniform resource locator of the first document, Equipped with, A kit comprising at least a part of the method of use of the composition described in the first document, according to claim 18 or 19.

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