Abstract: Grease composition contains (A) a straight-chain perfluoropolyether having a kinematic viscosity of 2-110 mm2/s at 40° C., (B) a branched perfluoropolyether having a kinematic viscosity of 2-100 mm2/s at 40° C., and (C) a fluorocarbon resin powder having a primary particle size of 1 ?m or less, wherein the contained amount of the fluorocarbon resin powder is 25-40 wt % with respect to the weight of the grease composition, and the weight ratio of the straight-chain perfluoropolyether (A) to the branched perfluoropolyether (B) is 15:85 to 70:30.

Abstract: An optical member resin sheet has excellent characteristics as an optical member and exhibits excellent performance even if used for a light-emitting device or the like. The optical member resin sheet is characterized in that the difference between the thickness of an end of the sheet and the thickness of the center of the sheet in the width direction of the sheet is within 5.0% of the total film thickness of the sheet; in that the thickness of the center of the sheet is in the range of 10-1000 ?m; in that the sheet area is 225 mm2 or more; and by containing at least one fluorescent substance or reflective material.

Abstract: A dual cure (condensation and free radical reaction) adhesive composition is useful for electronics applications.

Abstract: A dual cure (condensation and free radical reaction) adhesive composition is useful for electronics applications.

Abstract: Provided is a laminate having, on a substrate, a gel layer which is excellent in heat resistance, has low elastic modulus, low stress and is excellent in stress buffering properties and flexibility, is soft and excellent in holding property of electronic components before curing, and after curing, the gel layer is changed to a hard cured layer which is higher in shape retention and excellent in mold releasability than before curing, and a method for manufacturing the same. Also provided is a method for manufacturing an electronic component in which use of the laminate makes it difficult to cause problems such as deposits of silicone gel or a cured product thereof to a substrate or an electronic component, and makes it difficult to cause problems of defects or defective products of the electronic component. The laminate includes a curing reactive silicone gel layer on at least one type of substrate.

Abstract: A method for dehydrocoupling silanes and amines. The method comprises contacting: (a) an aliphatic amine; (b) a silane; and (c) a catalyst which is ZnX2, wherein X is alkyl, chloride, bromide, iodide, trifluoromethanesulfonate, bis(trifluoromethane)sulfonamide, tosylate, methanesulfonate or O3S(CF2)XCF3 wherein x is an integer from 1 to 10.

Abstract: A curable silicone composition for die bonding use contains at least (A) an organopolysiloxane having at least two alkenyl groups per molecule, (B) an organopolysiloxane having at least two siloxane units each represented by the formula: RHSiO (wherein R represents a monovalent hydrocarbon group having 1 to 12 carbon atoms and having no aliphatic unsaturated bond) per molecule, (C) a platinum-group metal-based catalyst for hydrosilylation reactions, (D) a hydrosilylation reaction inhibitor and (E) an adhesiveness-imparting agent, wherein the scorch time (ts1), which is defined in JIS K 6300-2, at a die bonding temperature is 20 to 60 seconds, and the 90% vulcanization time [tc(90)] with respect to the maximum torque value during the vulcanization time of 600 seconds is 300 to 500 seconds. The curable silicone composition for die bonding use according to the present invention can adhere a semiconductor chip to a support strongly.

Abstract: A silicone resin-linear co-polymer is disclosed. The silicone resin-linear copolymer includes a resinous structure having the general formula (1): (R1R2R3SiO1/2)x(R4SiO3/2)y ??(1) wherein each R1, R2, R3 and R4 is an independently selected substituted or unsubstituted hydrocarbyl group, with the proviso that in one molecular at least two of R1, R2, and R3 are aryl groups; and x and y are each from >0 to <1 such that x+y=1; and a linear structure having the general formula (2): (R5R6SiO2/2) ??(2) wherein R5 and R6 are each independently selected substituted or unsubstituted hydrocarbyl groups. End use applications and related methods of the silicone resin-linear copolymer are also disclosed.

Abstract: The first water repellent agent composition contains amino-modified silicone, a silicone resin, and a polyfunctional isocyanate compound. The second water repellent agent composition comprising dimethylpolysiloxane having a hydroxyl group and/or an alkoxy group having 1 to 3 carbon atoms, an amino group-containing silane coupling agent, a silicone resin, and a polyfunctional isocyanate compound.

Abstract: Silicone acrylate copolymer composition, namely, silicone resin-acrylate copolymers and methods of preparing the same. The silicone acrylate composition may include a silicone resin coupled with an acrylate polymer via a linking group. The silicone acrylate composition may be formed by preparing an acrylate or a (meth)acrylate functional resin and carrying out acrylate polymerization in the presence of a functionalized resin. A silane-functional acrylate polymer may be prepared, followed by a reaction to couple a resin to the silane-functional acrylate polymer. The resulting copolymer may then be used as desired, e.g., added to a silicone and acrylate mixture to create a non-separating blend.

Abstract: A curable composition comprises a cationic polymerizable material. The curable composition further comprises a diluent component comprising a silane compound having a single silicon-bonded cationic polymerizable group. A method of forming a cured article with the curable composition is also disclosed. The method comprises applying the curable composition on a substrate to form a film. The method further comprises curing the film on the substrate to form the cured article. The present invention also provides the cured article formed in accordance with the method.

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 silicone resin-linear copolymer is disclosed which has a resinous structure (A1) including R1SiO3/2 units, and a linear structure (A2) including repeated R22SiO2/2 units, wherein R1 is a propyl group and each R2 is an independently selected substituted or unsubstituted hydrocarbyl group, and wherein the resinous structure (A1) and the linear structure (A2) are bonded together in the silicone resin-linear copolymer via a siloxane bond.

Abstract: Described are hydrosilylation-curable polyorganosiloxane compositions containing sulfur, including hydrosilylation-curable polyorganosiloxane prepolymers and hydrosilylation-cured polyorganosiloxane polymer products made therefrom, as well as methods of preparing and using the same, devices comprising or prepared from the same, and sulfur-functional organosiloxanes useful therein.

Abstract: The present invention relates to a curable silicone composition comprising: (A) a diorganopolysiloxane having at least two alkenyl groups in a molecule, (B) at least two types of resinous organopolysiloxanes having different mass average molecular weights, (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, and (D) a hydrosilylation reaction catalyst. The curable silicone composition enables the production of an optical semiconductor device in which the marked viscosity elevation of the resulting composition can be inhibited, in which the fluidity and packing properties are outstanding and that has outstanding gas barrier properties when used as a sealant, and in which the device has outstanding initial optical output efficiency even when organopolysiloxane resin is blended in order to form cured product with moderate hardness and strength.

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: This relates to the coating of air bags, which are used for safety purposes to protect occupants of vehicles such as automobiles, and of air bag fabrics intended to be made into air bags. In particular the invention relates to the top coating of air bags and air bag fabrics which have been pre-coated with a cured organic resin coating composition. The top-coat is an anti-blocking coating composition comprising at least one solid lubricant dispersed in an organic polymer binder. A process for applying the top-coat is also described.

Abstract: A coating composition for a lubricating coating film includes: (A) a phenolic resin; (B) an epoxy resin having an epoxy equivalent weight of 600 to 4000; and (C) at least one type of solid lubricant. The epoxy equivalent weight is generally defined by the number average molecular weight per the number of epoxy groups in a single molecule. The coating composition has a weight ratio of component (A) to the total weight of component (A) and component (B) of at least 50 weight %. A lubricating coating film, formed from the coating composition, has a high level of flexibility on surfaces of various base materials.

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 complex prepared by combining a metal compound and an N-heterocyclic carbene has catalytic activity for condensation reaction of polyorganosiloxane compositions. The composition includes the complex, a silanol functional compound having an average per molecule of one or more silicon bonded hydroxy moieties.