Abstract: Provided is: a thermally conductive silicone gel composition which has a high thermal conductivity, and is less likely to flow out and slip off/drop off from a surface on which the gel composition is placed, even when the composition that has not been cured is placed on a sloped surface or in a vertical direction, and has excellent gap-filling ability with respect to a heat dissipation part, etc., and excellent repairability if desired; a thermally conductive member comprising the thermally conductive silicone gel composition; and a heat dissipation structure using the same. The thermally conductive silicone gel composition comprises: (A) an alkenyl group-containing organopolysiloxane; (B) an organohydrogenpolysiloxane; (C) a catalyst for a hydrosilylation reaction; (D) a thermally conductive filler; (E) a silane-coupling agent; and (F) a specific organopolysiloxane having a hydrolyzable silyl group at one end thereof. The gel composition has certain viscosity properties as disclosed herein.

Abstract: A graphene-modified elastomer material and its preparation method. The elastomer material comprises a first component and a second component; the first component comprises isocyanate prepolymer obtained through reaction of polyol and isocyanate, and the isocyanate prepolymer has a —NCO content of 22-30%; the second component comprises the following components in parts by weight: 60-90 parts of polyetheramine, 1-10 parts of liquid amine chain extender, 1-5 parts of polytetrahydrofuran ether polyol, and 1-5 parts of graphenes. Through adjusting the —NCO content of the isocyanate prepolymer, increasing the hard segment content, and combining with the components in the second component, the invention ensures the elasticity of the polymer while improving its mechanical properties such as hardness and bending strength.

Abstract: The invention relates to curable coating compositions containing at least one surface modifying amphiphilic additive; and at least one siloxane-polyurethane coating composition. The invention also relates to methods of making and using the curable coating compositions of the invention. The invention also relates to objects coated with the curable coating composition of the invention. The invention also relates to methods for reducing or preventing biofouling of a surface exposed to an aqueous environment comprising the steps of coating the surface with the curable coating composition of the invention to form a coated surface, and curing the coating composition on the coated surface. The invention also relates to a marine fouling-release coating containing the curable coating composition of the invention.

Abstract: Polar silane linkers are provided that attach to resins to form silane-functionalized resins. The functionalized resins can be bound to hydroxyl groups on the surface of silica particles to improve the dispersibility of the silica particles in rubber mixtures. Further disclosed are synthetic routes to provide the silane-functionalized resins, as well as various uses and end products that benefit from the unexpected properties of the silane-functionalized resins. Silane-functionalized resins impart remarkable properties on various rubber compositions, such as tires, belts, hoses, brakes, and the like. Automobile tires incorporating the silane-functionalized resins are shown to possess excellent results in balancing the properties of rolling resistance, tire wear, and wet braking performance.

Abstract: A new class of compounds known as chalcogenosilacyclopentanes is described. These compounds are five-membered ring structures containing a silicon-selenium or silicon-tellurium bond, as shown in Formulas (I) and (II). In these compounds, the substituents on the silicon and on the ring carbons may be hydrogen, alkyl, alkoxy, aromatic, or ether groups. The chalcogenosilacyclopentane compounds undergo ring-opening reactions with hydroxyl and other protic functionalities and may be used to prepare substrates that are amenable to thin film deposition techniques such as ALD and CVD.

Abstract: The present invention relates to aspartic acid ester-functional polysiloxanes, their use in the manufacture of curable compositions using polyisocyanate crosslinkers, in particular, in the manufacture of coating compositions, cured compositions obtained from said curable compositions and articles comprising the cured compositions.

Abstract: A heat stable siloxane-imide copolymer and a curable silicone adhesive composition comprising such a siloxane-imide copolymer is shown and described herein. The composition includes an alkenyl silicone, a silicone hydride based cross linker, hydrosilylation catalyst and additives that is curable at relatively low temperatures and shows good heat stability.

Abstract: Disclosed are a composition comprising a silane compound having a fluorine-containing (poly)ether group represented by Formula 1, a film formed from the composition, a display device including the film, and an article including a coating product of the composition: Rf-(L1)p1(L)a-C(?O)NR-(L2)p2-Si(R1)(R2)(R3)?? Formula 1 wherein in Formula 1, R is -(L3)p3-Si(R4)(R5)(R6), L is —CH2— or —CH2—O—CH2—, Rf is a fluorine-containing (poly)ether group, and L1 to L3, p1 to p3, and R1 to R6 are the same as defined in the detailed description.

Abstract: Curable organopolysiloxane compositions and their cured products with superior properties are described as well as their uses as materials for optical devices, such as LEDs.

Abstract: A room temperature curable sealant/adhesive composition is disclosed. The room temperature curable sealant/adhesive composition comprises: A) one or more organopolysiloxanes; B) a hydrophilic material; C) a cross-linker; D) a titanate catalyst and/or a zirconate catalyst; and E) one or more optional ingredients. A silicone elastomer formed therefrom and related methods are also disclosed. In general, such compositions (upon several hours of contact with water) do not repel water, but rather retain and pick-up water and/or can be wetted by aqueous materials subsequent to exposure.

Abstract: A method for producing a carbinol-modified organosiloxane, which comprises steps (A) to (C), is an efficient production method whereby it becomes possible to reduce the production of a by-product of the reaction for the production of a terminal-carbinol-modified organosiloxane. (A) a step of supplying the following components (a) to (c) to a tubular reactor continuously: (a) an organohydrogensiloxane represented by formula (I) (wherein R1's independently represent a monovalent hydrocarbon group having 1 to 20 carbon atoms; and m represents an integer of 0 to 500); (b) a compound represented by formula (II): R2—Z—OH (wherein R2 represents a vinyl group or an allyl group; and Z represents a bivalent hydrocarbon group); and (c) a platinum catalyst in an amount of 0.005 ppm by mass or more and less than 1.

Abstract: The present invention provides a compounding agent which, when used in a rubber composition containing a reinforcing filler, exhibits excellent dispersibility, workability, toughness, low heat build-up, and wear resistance; and a rubber composition containing the compounding agent. A modified butadiene polymer of the present invention has a functional group containing a nitrogen atom and silicon atom at a terminal, a weight average molecular weight of the modified butadiene polymer being from 1000 to 15000, and a molecular weight distribution of the modified butadiene polymer being 2.0 or less.

Abstract: A light emitting device includes a light emitting element, a substrate which contains a conductive member containing silver having the light emitting element mounted, and a sealing member which covers the light emitting element, and the sealing member is made of a cured silicone composite containing the following components (A), (B), (C), and (D): (A) an organopolysiloxane containing at least two alkenyl groups each bonded to a silicon atom per one molecule; (B) an organohydrogenpolysiloxane containing at least two hydrogen atoms each bonded to a silicon atom per one molecule; (C) a hydrosilylation catalyst; and (D) a zinc silanolate represented by the following formula (1): In the formula (1), R1 to R7 each independently represent a linear, branched, or cyclic monovalent hydrocarbon group having 1 to 10 carbon atoms, which may be substituted by a fluorine atom, or each independently represent a hydroxy group or an alkoxy group; and m represents an integer of 1 or greater.

Abstract: To provide a flame retardant resin composition having excellent flame retardancy and excellent resin physical properties. There is provided a flame retardant resin composition, including: an aromatic polycarbonate resin; an inorganic filler; a phosphate ester flame retardant; an organic sulfonic acid flame retardant; a drip preventing agent; and a polyorganosiloxane-containing graft copolymer, in which a content of the aromatic polycarbonate resin is 40 to 95 pts.mass to 5 to 60 pts.mass of the inorganic filler, and a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts.mass, 0.01 to 2.5 pts.mass, 0.05 to 1.5 pts.mass, and 0 to 10 pts.mass to the total 100 pts.mass of the aromatic polycarbonate resin and the inorganic filler.

Abstract: A curable organopolysiloxane composition is provided. The composition can be easily processed into a film shape and has a high specific dielectric constant, high dielectric breakdown strength, and a low Young's modulus, allowing for a high energy density to be achieved, in addition to having excellent mechanical strength when used as a dielectric layer in a transducer. A fluoroalkyl group-containing curable organopolysiloxane composition, which can be cured by an addition reaction, comprises: an organopolysiloxane containing an alkenyl group and a fluoroalkyl group; an organohydrogen polysiloxane having SiH at both terminals of a molecular chain but not having a fluoroalkyl group; and a linear fluoroalkyl group-containing organohydrogen polysiloxane or a branched fluoroalkyl group-containing organohydrogen polysiloxane having T units.

Abstract: A composition and a method are provided for graphene reinforced polyethylene terephthalate (PET). Graphene nanoplatelets comprising a suitable initial surface area are added to a solvent for producing PET. In some embodiments, the solvent comprises ethylene glycol. The solvent and graphene nanoplatelets are sonicated to disperse the nanoplatelets within the solvent. The solvent and graphene nanoplatelets are centrifuged to remove nanoplatelet agglomerates within the solvent. A supernatant solution of dispersed graphene nanoplatelets and solvent is decanted and then used for in-situ polymerization of the graphene reinforced PET comprising a continuous matrix of PET with a dispersed graphene reinforcement phase. The graphene reinforcements comprise a minimal number of layers of two-dimensional mono-atomic carbon sheets. In some embodiments, the number of layers ranges between 1 layer and 7 layers.

Abstract: Provided is a polymer of the formula: and compositions comprising the same. The polymers comprise a cyclic unsaturated group (Z3) within the siloxane polymer backbone. The polymers have been found to exhibit good thermal conductivity and may find utility in a variety of applications.

Abstract: Processes are described for purifying acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, end-equilibrated acetoxysiloxanes, wherein the acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, acetic anhydride-containing and optionally acetic acid-containing equilibrated, preferably end-equilibrated acetoxysiloxane, which is optionally dissolved in an inert solvent, is contacted with a base, the precipitate is filtered off thereafter and then the filtrate obtained is optionally purified by distillation.

Abstract: A condensation curable silicone adhesive composition comprising a siloxane-imide base polymer, condensation curable organopolysiloxane crosslinker, a condensation catalyst and an additive is shown and described herein. The composition is curable at relatively room temperatures and shows good heat stability.

Abstract: Provided is a composition for the treatment of fibers, such as PAN precursor fibers. The finish composition includes a polysiloxane; an emulsifier; water; and a dicarboxylic acid having a pKa from 1 to 4, and boiling point from 200 to 400° C. The dicarboxylic acid may have the following formula: where R1 is absent or a saturated or unsaturated, linear or branched, aromatic substituted or unsubstituted, hydrocarbon group; Y1 and Y2 are independently hydrogen, nitrogen, oxygen, sulfur, phosphorus, C1-C6 alkyl group, or an alkoxy group; and X1 and X2 are independently one or more hydrogen atoms, a metal, a quaternary amine, or a hydrocarbon group having up to 6 carbon atoms, the hydrocarbon group being an alkyl group, an alkylene group, or an aromatic group, which may be branched or linear, and may optionally have one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus.