Abstract: [Problem] To provide a novel polymer, which fills trenches having narrow widths and high aspect ratios and can form a thicker film. [Means for Solution] The block copolymer comprises a linear or cyclic block A having a polysilane skeleton comprising 5 or more silicon and a block B having a polysilazane skeleton comprising 20 or more silicon.

Abstract: A two part curable composition comprising organosiloxane polymer; water; an organosilane such as hexamethyldisilazane (HMDS) or vinyltrimethoxysilane; crosslinker; adhesion promoter and catalyst; and optionally comprising plasticizer; colorant and filler. The first part can comprise organosiloxane polymer and water. The second part can comprise crosslinker; adhesion promoter and catalyst. Either or both parts can optionally further comprise an organosilane such as hexamethyldisilazane (HMDS) or vinyltrimethoxysilane; plasticizer; colorant and filler. Cured reaction products of the two part curable organosiloxane composition has good adhesion to metallic sealing surfaces and good resistance engine oil and other automotive fluids. Cured reaction products of the two part curable organosiloxane composition can surprisingly retain physical properties after long-term exposure to temperatures between 200° C. and 250° C. and can retain physical properties after exposure to temperatures between 250° C. to 300° C.

Abstract: Reaction system for preparing acetoxy function-bearing siloxanes having chain lengths of more than 3 silicon atoms, comprising silanes and/or siloxanes bearing alkoxy groups, silanes and/or siloxanes bearing acetoxy groups, silanes and/or siloxanes bearing hydroxy groups and/or simple siloxane cycles and/or DT cycles, and also a reaction medium comprising acetic anhydride, Brønsted acid and acetic acid, wherein Brønsted acids having a pKa ??1.30 are used, and wherein the acetic acid is present in the reaction system in amounts of 0.4 to 15.0 percent by weight, based on the reaction system, wherein the molar ratio of Brønsted acid used to acetic acid is in a defined range, with the proviso that either the sole use of trifluoromethanesulfonic acid and also of trifluoromethanesulfonic acid and acetic acid is excluded, and/or that the Brønsted acid used at least in part has a pKa between ?1.3 and >?13.5.

Abstract: Hyperbranched polydiorganosiloxane polyoxamide polymers are formed from reaction mixtures containing AXg and BZm compounds where either A or B is a siloxane-based group, and each X is either an oxalylamino-functional group or an amino-functional group, and each Z is either an amino-functional group or an oxylamino-functional group, such that upon reaction X and Z form an oxamide bond.

Abstract: A process of: providing a polyfunctional compound selected from polyisocyanate, polyacrylate, and polyepoxy; and reacting the polyfunctional compound with a hydroxyl- or amine-terminated silyl-containing compound. The polyfunctional compound and the silyl-containing compound are at least difunctional. A thermoset made by this process.

Abstract: The present application relates to a chemical compound comprising an aromatic core, or a carbocyclic, non-aromatic, core, wherein the aromatic core is a benzene ring or a biphenyl; the carbocyclic, non-aromatic core is a 5 to 7 membered ring. The core has covalently attached thereto: at least two anchoring groups, each anchoring group comprising an activated silane group, wherein the anchoring groups have the following general formula -A-(CH2)nSiY3 wherein A is a covalent bond or O, “n” is an integer from 1 to 3, and Y is independently a methoxy group or an ethoxy group; and at least one hydrophilic group extending from the core, the hydrophilic group comprising one or more hydrophilic polymer residues with a molecular composition of (aO+bN)/(cC+dS+eSi+fP)>0.

Abstract: The use of an organocarbonate-modified prepolymer having at least an average of 1.5 carbonate, thiocarbonate, carbamate or thiocarbamate groups bonded directly to the polymer backbone each via an oxygen atom, where each of these oxygen atoms has its origin in the reaction of a primary, secondary or tertiary hydroxyl group of the polymer backbone and a reactive compound selected from the group consisting of a diorganocarbonate, a diorganothiocarbonate, a cyclic carbonate, a cyclic thiocarbonate, an N,N-diheterocyclourea derivative and an N,N-diheterocyclothiourea derivative. Also, the preparation of the alkoxysilane polymers.

Abstract: The lightweight footwear of the present invention maintains excellent durability and improves heat resistance, so that contraction percentage due to a change with the passage of time is significantly low, rarely causing deformation, and thus, the lightweight footwear may be used in a high temperature and sanitary environment. In addition, the present invention solves the problem of the occurrence of premature foaming due to injection molding and a pattern on the appearance due to dispersion failure, thereby facilitating injection molding.

Abstract: The present invention brings about an increase in the thermal conductivity of an elastomer molded article over a preexisting value. The method according to the present invention is a method that uses at least one of a liquid crystalline polymer and a precursor therefor as a thermal conductivity modifier for an elastomer. That is, the thermal conductivity modifier for an elastomer according to the present invention contains at least one of a liquid crystalline polymer and a precursor therefor. The thermal conductivity modifier may contain only at least one of a liquid crystalline polymer and a precursor therefor or may contain at least one of a liquid crystalline polymer and a precursor therefor along with an additional component. The method and thermal conductivity modifier according to the present invention can bring about an increase in the thermal conductivity of an elastomer molded article over a preexisting value.

Abstract: The invention relates to a silane, to a rubber mixture comprising the silane and to a vehicle tire comprising the rubber mixture in at least one component.

Abstract: A reaction product containing a non-cyclic alkoxy-functional polysiloxane is produced by heating a reaction system, which contains a cyclic polyorganosiloxane of the formula [(R12SiO)2/2]n, where the subscript n is an integer of at least 4 and each R1 is an alkyl group or aryl group; a silane of the formula R2(4?m)Si(OR3)m, where the subscript m is an integer from 1 to 4, each R2 independently is an alkyl group or aryl group, a hydrocarbyl group or a halogenated hydrocarbyl group and each R3 independently is an alkyl group; and a catalyst system comprising a metal trifluoromethanesulfonate of the formula [M]+[CF3SO3]?, where M is a metal atom selected from sodium (Na) and potassium (K), and a Brønsted acid, wherein Brønsted acids having a pKa?3.0, preferably having a pKa?2.0, particularly preferably having a pKa??0.0 are used.

Abstract: Aqueous antimicrobial coating compositions are disclosed comprising at least one organosilane homopolymer, present as a distribution of polymer chain lengths, and optionally at least one amine. A method of preparing an antimicrobial coating comprises coating a surface with the aqueous antimicrobial coating composition and allowing the composition to dry into a film that exhibits residual antimicrobial efficacy against microorganisms even after mechanical abrasion of the coating. The organosilane homopolymer may comprise only 3-aminopropylsilanetriol homopolymer, mixtures of 3-aminopropylsilanetriol homopolymer, 3-chloropropylsilanetriol homopolymer and 3-(trihydroxysilyl)propyl dimethyloctadecyl ammonium chloride homopolymer, or any one of various unique organosilane homopolymers having multiple amine functionality.

Abstract: The present invention relates to a composition comprising an aqueous dispersion of polymeric composite microspheres comprising an aqueous dispersion of polymeric composite microspheres that comprise a polysiloxane and a polymer, as defined herein, and a suspension polymerization process for making the composition. The composition is useful for making defect free coatings with a relatively low coefficient of friction.

Abstract: The invention relates to a curable composition, containing (A) at least one polyorganosiloxane, which has at least one hydroxy group bound to a silicon atom, (B) at least one silane of the formula (1): Si(R1)m(R2)n(R3)4?(m+n)??(1), as defined herein, (C) at least one aminosilane, and (D) at least one tin compound, wherein the composition is free of epoxysilane and the molar ratio of the aminosilane to the tin compound is 1:1 to 50:1, as well as to the preparation and use thereof.

Abstract: Disclosed is a liquid polymerizable composition including a chain-growth polymerization dispersing monomer, a step-growth polymerization monomer system and inorganic nanoparticles homogeneously dispersed in the monomers, as well as its use for the preparation of a transparent polymeric material having a high refractive index and low haze and its use in the optical field.

Abstract: A method of coating at least one silica capillary using a novel dual ligand sol-gel sorbent and method of manufacture of such sorbent is provided herein. The dual ligand sol-gel sorbent provides superior enrichment effects through simultaneous exploitation of superhydrophobicity of one of the ligands and the ability of the other ligand to undergo ?-? interaction with hydrophobic aromatic analytes. Sorbent performance is enhanced both in terms of analyte enrichment and sorbent stability, such as pH stability and solvent stability.

Abstract: Equilibrated trifluoromethanesulfonic acid-acidified ?,?-diacetoxypolydimethylsiloxanes, processes for the production thereof and SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA and a process for the production thereof are described, wherein the production of SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structure type ABA is effected by reacting trifluoromethanesulfonic acid-acidified acetoxysiloxane with polyetherols optionally in the presence of bases and optionally in the presence of an inert solvent.

Abstract: A polysiloxazane compound including a repeating unit of the following general formula (1), and having a number average molecular weight of 500 to 100,000 as measured by gel permeation chromatography versus polystyrene standards, wherein R1 and R2 each independently represent a substituted or unsubstituted C1-C50 monovalent hydrocarbon group optionally containing a hetero atom, Xs each independently represent a methyl group, an oxygen atom, NH—SiX2, or (NH)(3-r)/2—SiR1R2r (R1 and R2 have the same meaning as provided above), or Xs are joined to one another to represent an oxygen atom, n is an integer of 0 to 8, when the number of NH—SiX2 is denoted by p, p satisfies 0?p/(2n+4)?0.5, r is an integer of 0, 1, or 2, and a and b are numbers satisfying 0<a?1, 0?b<1, and a+b=1.

Abstract: A polyolefin-polydiorganosiloxane block copolymer may be prepared by hydrosilylation reaction.

Abstract: A coating composition comprising epoxidized vegetable oil, an amine terminated polyamide and a silicone resin is disclosed. Substrates coated at least in part with such coatings are also disclosed.