Abstract: The present invention relates to a curable silicone composition which is a hydrosilylation reaction curable silicone composition for sealing, coating, or adhering of an optical semiconductor element, and includes at least one type of compound selected from triazole-based compounds with the exception of benzotriazole. The curable silicone composition, for example, includes (A) an organopolysiloxane having at least 2 aliphatic unsaturated hydrocarbon groups per molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, (C) at least one type of compound selected from among triazole-based compounds with the exception of non-substituted benzotriazole, and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product having excellent transparency and thermal shock resistance, and the optical semiconductor device utilizing the composition has excellent reliability.

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 relates to a curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in a molecule; (B) an organopolysiloxane represented by a general formula; (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule; (D) a phosphor; and (E) a hydrosilylation reaction catalyst, to a cured product obtained by curing said composition, and to an optical semiconductor device in which a light emitting element is sealed or coated with a cured product of the aforementioned composition. The curable silicone composition has excellent fluidity and cures to form a cured product in which phosphors are homogeneously dispersed and which has a high refractive index.

Abstract: A co-modified organopolysiloxane having a group having a siloxane dendron structure and a group containing a saccharide component (e.g. a sugar lactone amide alkyl group) is disclosed. The present invention also provides a method for producing the co-modified organopolysiloxane, as well as a surface treatment agent, a powder treatment agent, a powder composition, a powder-in-oil dispersion, a preparation for external use, and the like containing the co-modified organopolysiloxane.

Abstract: The present invention relates to a manufacturing method for an organopolysiloxane-polyoxyalkylene block copolymer obtained by condensation reaction of a polyoxyalkylene compound having a particular chemical structure and an organopolysiloxane having a particular chemical structure. The manufacturing method according to the present invention can enable an easy manufacturing of a high molecular weight organopolysiloxane-polyoxyalkylene block copolymer and provide an organopolysiloxane-polyoxyalkylene block copolymer where an amount of volatile cyclic polysiloxane produced as a by-product is small.

Abstract: The present invention relates to a use of an acid in a manufacture of an organopolysiloxane through a condensation reaction of a silicon-containing compound containing a silicon-bonded hydroxyl group and a silicon-containing compound containing a silicon-bonded aminoxy group. Particularly, the present invention relates to a low-odor composition including such an organopolysiloxane. The composition according to the present invention can have little odor caused by a by-product produced via the condensation reaction described above.

Abstract: A liquid aryl group-containing polyorganosiloxane comprising an arylsiloxy unit represented by RSiO3/2 (wherein R is an aryl group), wherein: the arylsiloxy unit constitutes from 20 to 50 mol % of all the siloxy units constituting the polymer, and an average number of moles of aryl groups per 1 mole of Si atoms in the molecule is within a range of 1.20 to 1.65. A composition with an oil agent of the same, wherein the overall refractive index of the composition is not less than 1.45, and an overall viscosity at 25° C. of the composition is in a range from 100 to 100,000 mPa·s.

Abstract: A composite cured silicone powder comprising: (A) a cured silicone powder having an average particle size of 0.1 to 500 ?m, (B) an inorganic fine powder coated on the surface of said cured silicone powder and (C) a monohydric or polyhydric alcohol with a boiling point of at least 150° C. coating on the surface of component (A) and/or component (B). The composite cured silicone powder that has an excellent flowability, hydrophilicity, and dispersibility. And, this invention also relates to a production method of the composite, which is characterized by mixing components (A) to (C) under the condition of mechanical shearing.

Abstract: The present disclosure relates to compositions comprising: an organosilane having the formula: (R I)(3-n) (R2O)SiR3O(CH2CH2O)a(C3H6O)b R4 wherein: n is 1 or 2; a?1, b may vary from 0 to 30, with the proviso a?b; R1 is a hydrocarbon group containing 1 to 12 carbon atoms; R2 is hydrogen or an alkyl group containing 1 to 6 carbon atoms; R3 is a divalent hydrocarbon group containing 2 to 12 carbon atoms; and R4 is hydrogen, R1, or an acetyl group; and at least one of a thermoplastic resin, a thermoset resin, and an elastomer. The present organosilane compositions may be useful for treating various surfaces to render them, among other things, more hydrophilic.

Abstract: The present invention relates to a polysiloxane composition which contains (A) at least one type of organopolysiloxane that contains at least two unsaturated aliphatic hydrocarbon groups in the molecule, (B) at least one type of organohydrogenpolysiloxane that contains at least two silicon-bonded hydrogen atoms in the molecule, (C) a hydrosilylation reaction catalyst, and (D) inorganic particles which have a major axis to minor axis ratio of 1 to 1.5 and in which the proportion of particles having a diameter of 50 ?m or greater is 5 wt. % or less of the total quantity of particles, and which satisfies prescribed conditions. The polysiloxane composition of the present invention has good processability and can provide a hard cured product having an extremely low coefficient of thermal expansion after curing.

Abstract: The present invention relates to a curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in a molecule and represented by the average unit formula; (B) a straight chain organopolysiloxane having at least two alkenyl groups in a molecule and having no silicon-bonded hydrogen atoms; (C) an organosiloxane i) represented by the general formula, an organopolysiloxane (C2) having at least two silicon-bonded hydrogen atoms in a molecule and represented by the average unit formula, or a mixture of components (C1) and (C2); and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product having a high refractive index and a low gas permeability.

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 has an objective to provide a silicone elastomer composition in which a cured product thereof is flexible, which provides a silicone elastomer with a small hardness change even due to thermal aging, and in which superior adhesive properties with respect to other silicone elastomers and superior curing properties are exhibited. The objective of the present invention can be achieved by a silicone elastomer composition comprising: (A) an organopolysiloxane having two or more silicon atom-bonded alkenyl groups on average in a molecule, in which the content of the alkenyl group is less than 0.2% by weight with respect to the amount of component (A); (B) an organopolysiloxane having two or more silicon atom-bonded hydrogen atoms on average in a molecule, in which the amount of the silicon atom-bonded hydrogen atoms in component (B) ranges from 2.

Abstract: A cosmetic and a topical skin preparation comprising a higher alcohol-modified silicone (A) with the following general formula (1) wherein R1 is, e.g., an alkyl group; P is a monovalent organic group that contains the Si—O bond or is a long-chain monovalent hydrocarbyl group; at least one Q is a higher alcohol modifying group (—(C10-C30)-OH); and (m1+m2+m3) is a number in the range from 0 to 55 and most favorably (m1+m2+m3) is 1.

Abstract: To provide a coating agent composition that cures to form a transparent film that exhibits a high water repellency, a high durability, and an excellent adhesiveness to substrate. A coating agent composition that characteristically comprises (A) an acrylic copolymer obtained by the radical copolymerization of (A1) 1 mole silane compound represented by the general formula: CH2?C(R1)—COO-Q-SiR2n(OR3)3-n, (A2) 3.70 to 6.20 moles of at least one compound that contains a vinyl polymerizable unsaturated bond, and (A3) 1.05 to 1.80 moles of a siloxysilane compound represented by general formula (2): CH2?C(R1)—COO-Q-Si(OSiR43)3 at an molar ratio (A1)/{(A1)+(A2)+(A3)}=0.11 to 0.17; and (B) a condensation reaction catalyst.

Abstract: The present invention relates to a method of manufacturing an integrated piece comprising a convex cured product and a substrate, the method comprising a step of: depositing dropwise or dispensing a curable silicone composition onto the pre-heated substrate, the composition reaching a torque value of 1 dN·m within 60 seconds from immediately after beginning measurement as measured using a curelastometer according to JIS K 6300-2, at the temperature to which the substrate is heated, and having a viscosity at said temperature of at least 0.05 Pa·s. The method allows for the efficient manufacture of a hemispherical, hemicylindrical, dome-shaped, or similar convex cured product upon a substrate using a curable silicone composition.

Abstract: The present invention relates to a surface-treatment agent for powders for use in cosmetics, including a specific polymer having a specified carbosiloxane dendrimer structure, as well as a cosmetic comprising a powder which has been treated with the above surface-treatment agent. The surface-treated powder does not generate hydrogen, and therefore is safe. Further the surface-treated powder can exhibits, good compatibility with other cosmetic raw materials, and thereby, the stability of the formulation in cosmetics can be improved. The surface-treated powder can provide cosmetics with good water resistance, good sebum resistance, good glossiness, a good tactile sensation, good adhesive properties to hair and/or skin, or the like. The cosmetic can also have superior surface protective properties, a superior outer appearance, and/or a superior sensation during use.

Abstract: The present invention relates to microparticles comprising: at least one type of a platinum-based catalyst; and a thermoplastic polyolefin resin with a Z-average (Mz) of a weight average molecular weight (Mw) of at least 2500 and Mz/Mw of not more than 2.0, wherein the platinum-based catalyst is dispersed in the thermoplastic polyolefin resin. The microparticles make it possible to obtain a one-component curable organopolysiloxane composition having characteristics such as excellent storage stability.

Abstract: The present invention relates to a novel organopolysiloxane having a specified structure and a cosmetic containing the aforementioned organopolysiloxane. The novel organopolysiloxane according to the present invention is volatile, possesses stability at low temperature, provides superior glossiness, and has a superior property with respect to miscibility with a UV-ray absorber, and which is useful as a replacement of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, or methyltrimethicone. The cosmetic according to the present invention can provide superior feeling to the touch during use and a superior outer appearance. Furthermore, a degree of freedom in blending various components such as UV-ray absorbers into the cosmetic according to the present invention is increased.

Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.