Abstract: A production method for a liquid high purity sugar derivative-modified silicone or a composition thereof is disclosed. The method comprises the steps of: 1) capturing hydrophilic impurities in solid particles by causing an impurity containing composition containing liquid sugar derivative-modified silicone and the hydrophilic impurities derived from a sugar derivative to contact the solid particles, the sugar derivative being a hydrophilic modifier of the sugar derivative-modified silicone, and the solid particles being able to capture the hydrophilic impurities; and 2) separating the sugar derivative-modified silicone and the solid particles. The method is useful for production of the liquid high purity sugar derivative-modified silicone and the composition thereof on a commercial scale.

Abstract: A method of producing a glycerin derivative-modified silicone or a composition comprising the same, including a process that treats the glycerin derivative-modified silicone or the composition comprising the same with one or more type of acidic inorganic salt, which is solid at 25° C. and water soluble, and which is such that a pH at 25° C. of an aqueous solution prepared by dissolving 50 g of the acidic inorganic salt in 1 L of ion exchanged water is 4 or lower; and an external use preparation, cosmetic composition, or raw materials thereof that contain the low odor glycerin derivative-modified silicone obtained by the production method.

Abstract: The present invention relates to a monoalkenyl-containing glycerin derivative with purity of not less than 92% and electrical conductivity of not greater than 50 ?S/cm. The monoalkenyl-containing glycerin derivative can be manufactured by a manufacturing method comprising a step (A): a step of reacting a ketalized glycerin derivative and a monoalkenyl glycidyl ether in the presence of an inorganic base to obtain a ketal of monoalkenyl-containing glycerin derivative; a step (B): a step of purifying the ketal of monoalkenyl-containing glycerin derivative obtained in the step (A) by distillation; and a step (C): a step of hydrolyzing the ketal of monoalkenyl-containing glycerin derivative obtained in the step (B). The present invention is able to provide a high-purity monoalkenyl-containing glycerin derivative that was difficult in the past.

Abstract: The present invention relates to a glycerin derivative-modified organopolysiloxane elastomer comprising: as a hydrophilic group, a glycerin derivative group in which an average number of repetitions of glycerin units is in a range of 1.0 to 2.4, being free of an oxyalkylene structure having an average number of repetitions of an oxyalkylene unit of 2 or higher; and a crosslinked three-dimensional net-like structure having a carbon-silicon bond in a crosslinking part.

Abstract: An excellent oil-thickening or -gelling agent is provided. The agent is compatible with various oils and can freely control the form or viscosity of oily raw materials or cosmetics by changing the quantity thereof added. The agent contains a novel co-modified organopolysiloxane that contains both a group having a siloxane dendron structure and a hydrophilic group and that preferably has a degree of polymerization of 200 or more. A gel composition containing the co-modified organopolysiloxane is also provided. The gel composition is useful as a base that permits stable and easy preparation of cosmetics having various viscoelasticities and forms. An oil is kept in the form of a gel that has a viscoelasticity falling within the intermediate range between the viscoelasticity of liquid and that of solid. Cosmetics containing the thickening or gelling agent are also provided.

Abstract: A co-modified organopolysiloxane represented by General Formula (1): R2R12SiO(R12SiO)nSiR12Q, and a surfactant/dispersing agent, emulsifier for a water-in-oil emulsion, external use preparation and cosmetic composition comprising the same. In the formula, the R1 groups are monovalent hydrocarbon group having 1 to 12 carbon atoms, R2 is a monovalent hydrocarbon group having 13 to 30 carbon atoms, and Q is a sugar alcohol group-containing organic group or a diglycerin derivative group having an average number of repetitions of a glycerin unit of 1.1 to 2.9, n is a number in a range of 0 to 100.

Abstract: The present invention provides a co-modified organopolysiloxane having a specified chemical structure in which a sugar alcohol-modified group and a silylalkyl group having a siloxane dendron structure, and optionally a long-chain hydrocarbon group are present. The co-modified organopolysiloxane is blended, as a surfactant, a powder treatment agent, a gelling agent or the like, or as a cosmetic raw material together with powder (s), oil agent (s) or the like, in a preparation for external use, and in particular, a cosmetic.

Abstract: The present invention provides a cosmetic exhibiting superior feeling to the touch and a superior uniformity using a novel organopolysiloxane. The cosmetic contains a liquid organopolysiloxane having fluidity at 25° C. and having a crosslinked three-dimensional network structure. The aforementioned liquid organopolysiloxane has a loss factor, tan ?, at a shear frequency of 10 Hz, which is 1 or more.

Abstract: The present invention provides a glycerin-modified silicone which has an excellent emulsification/dispersion performance and thickening effect when used alone, particularly when the oil phase is a continuous phase. The present invention is a specific diglycerin derivative-modified silicone having a long-chain hydrocarbon group at a prescribed ratio in a molecule and having as a hydrophilic group only a diglycerin derivative group not having an oxyalkylene structure with an average value of the number of repetitions of oxyalkylene units of two or more; and a composition containing the diglycerin derivative-modified silicone.

Abstract: The present invention relates to an organopolysiloxane elastomer having a group having a siloxane dendron structure bonded to a silicon atom, and having a crosslinked structure that includes a carbon-silicon bond in the crosslinking portion, and relates to a glycerin derivative-modified organopolysiloxane elastomer having a siloxane dendron structure bonded to a silicon atom and a hydrophilic group bonded to a different silicon atom from the silicon atom, and having a crosslinked structure that includes a carbon-silicon bond in the crosslinking portion.

Abstract: The present invention relates to a monoalkenyl-containing glycerin derivative with purity of not less than 92% and electrical conductivity of not greater than 50 ?S/cm. The monoalkenyl-containing glycerin derivative can be manufactured by a manufacturing method comprising a step (A): a step of reacting a ketalized glycerin derivative and a monoalkenyl glycidyl ether in the presence of an inorganic base to obtain a ketal of monoalkenyl-containing glycerin derivative; a step (B): a step of purifying the ketal of monoalkenyl-containing glycerin derivative obtained in the step (A) by distillation; and a step (C): a step of hydrolyzing the ketal of monoalkenyl-containing glycerin derivative obtained in the step (B). The present invention is able to provide a high-purity monoalkenyl-containing glycerin derivative that was difficult in the past.

Abstract: The present invention relates to a manufacturing method for a liquid high-purity glycerin derivative-modified silicone, the method comprising: a step of adding, to a mixture containing a glycerin derivative-modified silicone and impurities, an organic wax having affinity with the impurities and having a higher melting point than the glycerin derivative-modified silicone, melting and mixing while heating, and introducing the impurities into the melted organic wax; a step of obtaining a solidified product of the organic wax by cooling the organic wax; and a step of performing solid-liquid phase separation on the glycerin derivative-modified silicone and the solidified product of the organic wax. With the present invention, it is possible to provide a useful method for stably producing a high-purity glycerin derivative-modified silicone on a commercial scale.

Abstract: The present invention relates to a method for producing a transparent or semi-transparent liquid glycerin derivative-modified silicone composition that comprises a hydration step of adding water to a liquid glycerin derivative-modified silicone or composition thereof. The present invention can provide a liquid glycerin derivative-modified silicone composition having a transparent or semi-transparent appearance can be provided.

Abstract: The present invention relates to a production method for a liquid high-purity organosilicon compound, the method comprising the steps of: adding, to a mixture containing an organosilicon compound selected from a group consisting of organomodified silcones and organomodified silanes and impurities, an organic wax having affinity with the impurities and having a higher melting point than the organosilicon compound, melting and mixing while heating, and introducing the impurities into the melted organic wax; obtaining a solidified product of the organic wax by cooling the organic wax; and performing solid/liquid phase separation on the organosilicon compound and the solidified product of the organic wax. With the present invention, it is possible to provide a useful method for producing a high-purity organosilicon compound stably and on a commercial scale.

Abstract: A novel organopolysiloxane copolymer is disclosed. The copolymer has excellent surface active power and exhibits excellent blending stability in cosmetic preparations and excellent feeling improvement characteristics in comparison to conventionally known polyether-modified silicones and silicone-containing alternating copolymers. The organopolysiloxane copolymer can be used in combination with various cosmetic formulation ingredients. The copolymer is an AB-type organopolysiloxane copolymer which has a silylalkyl group having a carbosiloxane dendrimer structure at one end of the molecular chain, and a hydrophilic segment at the other end. A method for producing the AB-type organopolysiloxane copolymer; a surfactant and a powder processing agent which are respectively composed of the organopolysiloxane copolymer; and a composition for external application and a cosmetic formulation which respectively contain the organopolysiloxane copolymer are also disclosed.

Abstract: A method of producing a glycerin derivative-modified silicone or a composition comprising the same, including a process that treats the glycerin derivative-modified silicone or the composition comprising the same with one or more type of acidic inorganic salt, which is solid at 25° C. and water soluble, and which is such that a pH at 25° C. of an aqueous solution prepared by dissolving 50 g of the acidic inorganic salt in 1 L of ion exchanged water is 4 or lower; and an external use preparation, cosmetic composition, or raw materials thereof that contain the low odor glycerin derivative-modified silicone obtained by the production method.

Abstract: A co-modified organopolysiloxane represented by General Formula (1): R2R12SiO(R12SiO)nSiR12Q, and a surfactant/dispersing agent, emulsifier for a water-in-oil emulsion, external use preparation and cosmetic composition comprising the same. In the formula, the R1 groups are monovalent hydrocarbon group having 1 to 12 carbon atoms, R2 is a monovalent hydrocarbon group having 13 to 30 carbon atoms, and Q is a sugar alcohol group-containing organic group or a diglycerin derivative group having an average number of repetitions of a glycerin unit of 1.1 to 2.9, n is a number in a range of 0 to 100.

Abstract: A diglycerin derivative-modified silicone, wherein the diglycerin derivative-modified silicone contains a long chain alkyl group as a lipophilic group in a molecule, does not have an oxyalkylene structure wherein an average value of the number of repetitions of the oxyalkylene unit is two or more, has only a glycerin derivative group with an average value of the number of repetitions of glycerin units of 1.1 to 2.9 as a hydrophilic group, and does not have other hydrophilic group in the molecule; a surfactant and dispersing agent, an emulsifier for a water-in-oil emulsion, an external use preparation, and a cosmetic composition containing the same.

Abstract: A co-modified organopolysiloxane having a viscosity at 25° C. of not more than 1,500 mPa·s, a group that has a siloxane dendron structure, a hydrophilic group, and expressed by the following general formula (1): R1aR2bL1cQdSiO(4-a-b-c-d)/2 (1). The invention also relates to a powder treatment agent, a powder in oil dispersion, an external use preparation (particularly a cosmetic composition) composition comprising the co-modified organopolysiloxane. In said general formula (1), R1 is a monovalent hydrocarbon group or a hydrogen atom; R2 is a monovalent hydrocarbon group having from 6 to 30 carbons; L1 is a silylalkyl group having a siloxane dendron structure; and Q is a hydrophilic segment.

Abstract: A liquid organopolysiloxane having fluidity at least 100° C., a silicon-bonded glycerin derivative group, and a crosslinked structure comprising a carbon-silicon bond at the crosslinking portion.