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: 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: 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 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: The present invention provides a novel organopolysiloxane in which a rich hydrophilic property is exhibited, not only superior miscibility with a hydrophilic component and but also a hydrophobic property are exhibited, and superior miscibility with both a silicone oil and a non-silicone oil such as a hydrocarbon oil, an ester oil or the like, and provide various usages of the aforementioned novel organopolysiloxane by developing the superior characteristics thereof such as good surface activity power, a distinctive sensation during use, increased stability and the like. A co-modified organopolysiloxane having a specified chemical structure in which a sugar alcohol-modified group and a long-chain hydrocarbon group are present in one molecule is produced.

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.

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: 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: 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: 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 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 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 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 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 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 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.

Abstract: The present invention has an objective to provide a surface treatment agent which is safe with no generation of hydrogen, can be suitably used in a surface treatment of powder(s), exhibits good compatibility with other raw materials of cosmetics, and therefore, can improve a dispersing property and stability of powder(s) contained in a cosmetic, as well as provide a powder which has been subjected to a surface treatment with the aforementioned powder treatment agent, and a cosmetic raw material and a cosmetic which are produced by blending them, exhibit superior storage stability, have a superior outer appearance, and exhibit a superior sensation during use. A sugar alcohol-modified organopolysiloxane having a specified structure is used in the powder treatment.