Abstract: The present invention relates to a composition comprising: a) a polyorganosiloxane; b) filler particles; and c) a filler treating agent of Formula I: Formula I where R1, R2, m, n, p, and q are as defined herein. The composition is useful as a thermally conductive formulation.

Abstract: A method of preparing an organosilicon compound having at least one silicon-bonded carbinol group and/or at least one silanol group with a cytochrome P450 variant that facilitates the oxidization of a silicon-bonded hydrocarbyl group in the presence of an oxidant. The method includes combining the cytochrome P450 variant, an initial organosilicon compound having at least one silicon-bonded hydrocarbyl group, and a cofactor to give a reaction mixture, and exposing the reaction mixture to an oxidant to oxidize the silicon-bonded hydrocarbyl group of the initial organosilicon compound, thereby preparing the organosilicon compound having at least one silicon-bonded carbinol group and/or at least one silanol group. Cytochrome P450 variants suitable for use in the method are also disclosed, along with methods for engineering and optimizing the same. Nucleic acids encoding the cytochrome P450 variants and compositions, expression vectors, and host cells including the same are also disclosed.

Abstract: A silicone-polyether copolymer and methods for its preparation and use are disclosed. The silicone-polyether copolymer is useful in various applications including hair care compositions due to having a refractive index >1.46.

Abstract: A method of preparing a multifunctional organosilicon compound is provided. The method comprises reacting (A) an organosilanol compound comprising a functional moiety selected from alkoxysilyl moieties and acryloxy moieties and (B) a hydridosilane compound having at least two hydrolysable groups in the presence of (C) an acetate salt. A multifunctional organosilicon compound prepared according to the method is also provided.

Abstract: A silicone-polyether copolymer and methods for its preparation and use are disclosed. The silicone-polyether copolymer is useful as a foam control agent in a laundry detergent composition.

Abstract: The present invention relates to a composition comprising thermally conductive filler particles; a compound of Formula 1: and a compound of Formula 2: wherein R, R?, R?, R??; m; n; p; x; and y are defined herein. The composition of the present invention is useful as a thermally conductive composite that exhibits high thixotropy and polyorganosiloxane compatibility.

Abstract: A process for making an organosilicon compound is provided. The process involves isomerization and hydrosilylation starting with an internal olefinic compound and a silyl hydride compound. A catalyst composition including a Platinum hydrosilylation reaction catalyst and an Iridium (I)—ligand complex is capable of catalyzing the isomerization and hydrosilylation reactions.

Abstract: Various embodiments described herein are directed to a polymer composition comprising polyethylene and a reaction product of the copolymerization of the ethylene and (meth)acrylic ester functionalized polysiloxane, and optionally one or more units derived from a termonomer. Articles made from the polymer composition and methods of making the polymer composition are also described.

Abstract: A thermally conductive silicone composition comprises (A) 100 parts by mass of an alkenyl group-containing organopolysiloxane; (B) a mixture of components (B1) and (B2), where component (B1) is an organosilicon compound of 1 to 100 silicon atoms containing at least one phenylene structure and at least one silicon-bonded hydrogen atom per molecule, and component (B2) is an organohydrogenpolysiloxane containing an average of 2 to 4 silicon-bonded hydrogen atoms per molecule and having a viscosity of from 1 to 1,000 mPa·s at 25° C., but no phenylene structure in the molecule. The thermally conductive silicone composition further comprises (C) 400 to 3,500 parts by mass of a thermally conductive filler, (D) a siloxane macromonemer, and (E) a catalytic amount of a hydrosilylation reaction catalyst. A thermally conductive member comprising the thermally conductive silicone composition is also provided.

Abstract: A polyfunctional organohydrogensiloxane is prepared using a boron containing Lewis acid as catalyst. The polyfunctional organohydrogensiloxane may be formulated into release coating compositions. Alternatively, the polyfunctional organohydrogensiloxane may be further functionalized with a curable group to form a clustered functional organosiloxane. The clustered functional organosiloxane may be formulated into thermal radical cure adhesive compositions.

Abstract: A method for preparing a siloxane-(meth)acrylate macromonomer is provided. The method includes hydrosilylation, hydrolysis, and condensation. By-products of the method may be recycled to produce additional siloxane-(meth) acrylate macromonomer. An exemplary siloxane-(meth)acrylate macromonomer prepared by the method is 3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)propyl methacrylate.

Abstract: The present invention relates to a composition comprising one or more filler particles and a first treating agent of Formula 1; and a second treating agent of Formula 2; where R, R1, R2, R3, Y, x, y, and z are defined herein. The composition of the present invention is useful as a non-curable thermal grease that can achieve high thermal conductivities at dispensable and processable viscosities.

Abstract: Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20° C. to about 45° C. The reaction product is separated and washed with saturated alkali carbonate solution.

Abstract: Curable silicone elastomer compositions having enhanced adhesive properties with respect to a wide variety of substrates are described. The compositions described herein are provided with a phenylmethylpolysiloxane based additive which comprises at least one, alternatively at least two Si—H groups per molecule and at least one, alternatively at least two epoxide functional groups per molecule. Said phenylmethylpolysiloxane based additives provide resulting elastomers with improved heat-humidity stabilization.

Abstract: A branched polysiloxane compound and methods for its preparation are disclosed. The branched polysiloxane compound may be used as a heat transfer fluid.

Abstract: A carbamate-functional alkoxysilalkylenesilane compound and methods for its preparation and use are provided. The compound has formula (R12)N—C(?O)O—Si(R22)-D-Si(OR4)3, where R1 may be hydrogen, methyl, or ethyl; R2 may be methyl, R4 may be methyl, and each instance of D is a linear or branched alkylene group such as —CH2—CH2— and —CH(CH3)—. The compound may be used to cap silanol moieties in a silanol-functional polyorganosiloxane to produce a polyalkoxy-functional polyorganosiloxane. The polyalkoxy-functional polyorganosiloxane may be used as a crosslinker in a moisture curable room temperature vulcanizing (RTV) silicone composition.

Abstract: A multifunctional organosilicon compound is provided which has the general formula XSi([OSiR2]p-0-SiR2Y)a(R1)3-a— ln the formula, X is selected from H and ethylenically un saturated moieties; each Y independently comprises a functional moiety selected from alkoxysilyl moieties, acryloxy moieties, and epoxide moieties; each R is an independently selected hydrocarbyl group; each R1 is an independently selected hydrocarbyl group; subscript a is 1, 2, or 3; and each subscript b is independently 0, 1, or 2. A method of preparing the multifunctional organosilicon compound is also provided. The method comprises reacting (A) an organosilanol compound and (B) a silane compound having at least two hydrolysable groups. A functionalized siloxane compound prepared from the multifunctional organosilicon compound, a method of preparing the functionalized siloxane compound, and an adhesive comprising the functionalized siloxane compound are also provided.

Abstract: There is provided curable silicone elastomer compositions having enhanced adhesive properties with respect to a wide variety of substrates. The curable silicone elastomer compositions described herein are provided with a phenylmethylpolysiloxane based additive which comprises at least one, alternatively at least two Si—H groups per molecule and at least one, alternatively at least two anhydride functional groups per molecule. Said phenylmethylpolysiloxane based additives provide resulting elastomers with improved heat-humidity stabilization.

Abstract: A method for preparing functionalized polyorganosiloxanes is disclosed. The method includes 1) combining starting materials including A) a boron-containing Lewis acid catalyst, and B) an organosilicon compound having an average, per molecule of at least 1 silicon bonded groups of the formula —OR2; wherein each R2 is an independently selected monovalent hydrocarbon group of 1 to 6 carbon atoms, thereby forming a catalyzed mixture; and thereafter 2) adding the catalyzed mixture into a starting material including C) an organohydrogensiloxane having at least 1 silicon bonded hydrogen atom per molecule, thereby preparing a product comprising the functionalized polyorganosiloxane and a by-product comprising HR2.

Abstract: A branched organosilanol compound and method for its preparation are provided. The branched organosilanol compound may be used as a starting material in a method for preparing a functionalized polymer.