Abstract: Provided are silicone elastomer particles that have higher oil absorbency than conventional products and are less prone to aggregation, making the particles superior in handling workability as a cosmetic raw material and imparting a superior tactile sensation and feel during use to a cosmetic product. Specifically, silicone elastomer particles, having a structure in which at least two silicon atoms in a silicone elastomer particle are crosslinked by a divalent organic group having a partial structure formed by radical polymerization of vinyl acetate, as expressed by —{CH2—CH(COOCH3)}t— (where t is 1 or more), as well as a use thereof, are provided. In particular, the silicone elastomer particles have a crosslinked structure that is active with respect to biodegradability. Therefore, primary particles thereof are expected to have a property of disintegrating with the generation of non-crosslinked siloxane molecules due to a decomposition reaction of microorganisms and the like in the natural world.

Abstract: Provided is a carboxylic acid co-modified organopolysiloxane that can stably and uniformly disperse various hydrophobic powders in an aqueous phase and has excellent functionality as a powder dispersant or the like. Compositions, such as topical agent compositions comprising the carboxylic acid co-modified organopolysiloxane, are also provided. The carboxylic acid co-modified organopolysiloxane is expressed by the following structural formula (1): where R1 is a C6 or lower hydrocarbon group or a hydrogen atom, R2 is a C6-30 monovalent hydrocarbon group, L1 is a specific organosilicon-containing organic group, Rc is a carboxyl group-containing organic group, R? is a group independently selected from the aforementioned R1, R2, L1 and Rc, but Rc and L1 are always included in the molecule.

Abstract: Provided is a co-modified organopolysiloxane that has excellent affinity and compatibility with a wide range of cosmetic product raw materials (particularly non-silicone oil agents such as fatty acid ester oils and the like), is less likely to cause thickening or inferior dispersion when used with powders, and can form favorable and stable slurries. The co-modified organopolysiloxane is expressed by structural formula (1) below, with an HLB value within a range of 0.5 to 2.0, and viscosity within a range of 200 to 1500 mPa·s. R2 is a monovalent hydrocarbon group having 6 to 30 carbon atoms, L1 is an organosilicon-containing organic group selected from silylalkyl groups having a carbosiloxy dendron structure and groups having a siloxane macromonomer structure, and Q is a hydrophilic group, which is a (poly)glycerin residual group or sugar alcohol residual group. The co-modified organopolysiloxane can be used as a powder dispersing agent or the like.

Abstract: Silicone particles having excellent dispersibility are provided via the method herein. A cosmetic material having excellent feeling of use, and a highly functional paint and an electronic material are also provided. The silicone particles include a siloxane as a component. A content of a hydrogen atom bonded to a silicon atom per unit mass is 300 ppm or less, or optionally is 20 ppm or less. In addition, the silicon atom in the siloxane as a component for the silicone particles is crosslinked with another silicon atom via an alkylene group having a carbon number of 4 to 20.

Abstract: Provided is a cosmetic composition with excellent storage stability, feel during use and ultraviolet light blocking effects, in which an inorganic ultraviolet light blocking agent comprising a hydrophobic fine particulate metal oxide, e.g., hydrophobic fine particulate zinc oxide can be uniformly and stably dispersed in an aqueous phase, and in which a reduction in viscosity of a formulation is suppressed even when the structure of the hydrophobic fine particulate metal oxide is dispersed in the aqueous phase. The cosmetic composition comprises (A) a carboxylic acid modified silicone having a specific structure, (B) a water-soluble thickening agent, (C) a basic compound, and (D) a hydrophobic fine particulate metal oxide. The cosmetic composition is useful as a sunscreen cosmetic composition.

Abstract: Provided is an oil-in-water cleansing cosmetic composition. The oil-in-water cleansing cosmetic composition comprises: (A) carboxylic acid-modified silicone that is liquid at 50° C.; (B) 3 to 80 mass % of an oil agent relative to the total mass of the cosmetic composition; (C) water; and (D) a basic compound. An amount of an ionic surfactant other than the carboxylic acid-modified silicone (A) that is liquid at 50° C. is 10 mass % or less relative to the total mass of the cosmetic composition. In general, the oil-in-water cleansing cosmetic composition quickly blends with makeup grime, has a high makeup removing effect, and has excellent stability.

Abstract: An oil-in-water emulsion cosmetic composition is provided. The cosmetic composition comprises a carboxylic acid modified silicone (A) that is liquid state at 50° C., an oil agent (B), water (C), and an oil-soluble film-forming agent (D). The oil-soluble film-forming agent (D) is present in a range of 0.01 to 5 mass % of the total mass of the cosmetic composition. The cosmetic composition according can provide a cosmetic film with high stability and excellent water resistance.

Abstract: Provided is a silicone resin coated silicone elastomer particle which can be easily produced on an industrial scale, has superior dispersibility and oil absorptivity in a curable organic resin such as an epoxy resin, and has superior workability due to low secondary aggregation compared to conventional silicone elastomer particles. Also provided are applications containing the particles such as organic resin additives, organic resins, coating compositions or coating agent compositions, and cosmetic compositions. The silicone resin coated silicone elastomer particles have part or all of their surface coated with a silicone resin made up of two types of siloxane units. The siloxane units are selected from D units represented by R2SiO2/2, T units represented by RSiO3/2, and Q units represented by SiO4/2. The particles also have a structure in which at least two silicon atoms in the particles are cross-linked by a silalkylene group with 2 to 20 carbon atoms.

Abstract: Provided is an oil-in-water emulsion cosmetic composition having a high UV protection or blocking effect (particularly, boost effect of SPF value) and excellent water resistance and the like of a film (e.g., cosmetic film) without impairing the tactile sensation or the feeling of use particular to the oil-in-water emulsion cosmetic composition. The oil-in-water emulsion cosmetic composition comprises: (A) a carboxylic acid-modified silicone in a liquid form at 50° C., (B) a vinyl-based polymer emulsion, (C) a basic compound, and (D) an inorganic UV protecting agent consisting of hydrophobic fine particulate metal oxide. The oil-in-water emulsion cosmetic composition is useful.

Abstract: An oil-in-water emulsion cosmetic composition is provided. The oil-in-water emulsion cosmetic composition comprises a carboxylic acid modified silicone (A) that has a specific chemical structure and is liquid at room temperature, an oil agent (B), and water (C). The oil-in-water emulsion cosmetic composition can provide a cosmetic film with high stability and excellent water resistance.

Abstract: An aqueous dispersion composition in which hydrophobic powders are stably and uniformly dispersed in an aqueous phase, which has excellent handling workability, and which can exhibit sufficient water repellency, water resistance, sebum resistance, and the like when compounded in a cosmetic composition or the like is provided. The aqueous dispersion composition contains at least (A) carboxylic acid-modified silicone in a liquid form at 50° C., (B) a hydrophobic powder, (C) a basic substance, and (D) water; and optionally (E) one or more alcohols selected from polyhydric alcohols and ethyl alcohols; wherein 80% by mass or more of a total composition is formed of the components (A) to (E), and component (B) is contained in a range of 10% to 70% by mass of the total composition, and component (A) is contained in a range of 5 to 30 parts by mass with respect to 100 parts by mass of component (B).

Abstract: A cosmetic composition is provided. The cosmetic composition comprises a carboxylic acid modified silicone (A) that has a specific chemical structure and is liquid at room temperature. The cosmetic composition also comprises an oil agent (B). The cosmetic composition generally provides a cosmetic film having excellent water resistance, and can be easily removed by normal soap and water.

Abstract: A treatment agent for a cosmetic powder is provided. The treatment agent contains a reactive organosiloxane represented by the following general formula (1) as a main ingredient: In general formula (1): each R1 is independently an alkyl group having 1 to 30 carbon atoms; each R2 is independently an alkyl group having 1 to 20 carbon atoms; R3 is a divalent alkylene group; n is an integer of 1 to 200; and p is an integer of 1 to 3. The treatment agent for a cosmetic powder of this disclosure is capable of imparting excellent lipophilicity. A cosmetic raw material having cosmetic effect and giving an excellent feeling of use, and a cosmetic are also provided.

Abstract: Silicone particles having excellent dispersibility are provided via the method herein. A cosmetic material having excellent feeling of use, and a highly functional paint and an electronic material are also provided. The silicone particles include a siloxane as a component. A content of a hydrogen atom bonded to a silicon atom per unit mass is 300 ppm or less, or optionally is 20 ppm or less. In addition, the silicon atom in the siloxane as a component for the silicone particles is crosslinked with another silicon atom via an alkylene group having a carbon number of 4 to 20.

Abstract: Silicone particles having excellent dispersibility are provided. A cosmetic material having excellent feeling of use, and a highly functional paint and an electronic material are also provided. The silicone particles include a siloxane as a component. A content of a hydrogen atom bonded to a silicon atom per unit mass is 300 ppm or less. In addition, the silicon atom in the siloxane as a component for the silicone particles is crosslinked with another silicon atom via an alkylene group having a carbon number of 4 to 20.

Abstract: Provided is an oil-including elastomer particle wherein at least two silicon atoms within the silicone elastomer particle are cross-linked through a silalkylene group with a carbon number of between 4 and 20, and having a structure that includes, in the silicone elastomer particle, an oil that is liquid at 40° C. In general, the mixture of oil and the cross-linking silicone composition can be cured in the form of emulsion particles. Also provided herein are uses of the oil-including elastomer particle and emulsion particles formed therefrom.

Abstract: Cured silicone particles are disclosed. The cured silicone particles are obtained by curing a curable silicone composition comprising at least components (A) through (C), wherein components (A) and (B) are polyorganosiloxanes having certain average formulas, and component (C) is a catalyst. The average particle size of the cured silicone particles is from 0.1 to 500 ?m. Related methods and a cosmetic material comprising the cured silicone particles are also disclosed.

Abstract: A treatment agent for a cosmetic powder is provided. The treatment agent contains a reactive organosiloxane represented by the following general formula (1) as a main ingredient: In general formula (1): each R1 is independently an alkyl group having 1 to 30 carbon atoms; each R2 is independently an alkyl group having 1 to 20 carbon atoms; R3 is a divalent alkylene group; n is an integer of 1 to 200; and p is an integer of 1 to 3. The treatment agent for a cosmetic powder of this disclosure is capable of imparting excellent lipophilicity. A cosmetic raw material having cosmetic effect and giving an excellent feeling of use, and a cosmetic are also provided.

Abstract: Silicone particles having excellent dispersibility are provided. A cosmetic material having excellent feeling of use, and a highly functional paint and an electronic material are also provided. The silicone particles include a siloxane as a component. A content of a hydrogen atom bonded to a silicon atom per unit mass is 300 ppm or less. In addition, the silicon atom in the siloxane as a component for the silicone particles is crosslinked with another silicon atom via an alkylene group having a carbon number of 4 to 20.

Abstract: A cosmetic composition is disclosed, which comprises: (A) 100 parts by weight of at least one vinyl polymer having at least one carbosiloxane dendrimer group in a side chain; (B) from 0.1 to 30 parts by weight of a surfactant; and (X) water; wherein an emulsified particle comprising at least component (A) and component (B) is in an aqueous phase; and wherein a weight average molecular weight of component (A) is at least 80000. By blending a vinyl polymer emulsion having a carbosiloxane dendrimer structure in an aqueous phase according to the present invention, a cosmetic that exhibits excellent softness, texture during usage and smoothness of finish, waterproofness, and makeup retaining properties can be provided.