Abstract: The instant disclosure provides an organometallic compound of Formula I: wherein R is selected from —C1-10 alkyl or —C(O)C1-10 alkyl; R1 is selected from —C1-10 alkyl, —C(O)C1-10 alkyl, —C(O)C1-10 alkylN+RaRbCl?, —C(O)C1-10 alkylN(CO)Ra, —C1-10 alkylN+RaRbCl—, or —C1-10 alkylN(CO)Ra, wherein Ra, and Rb is independently selected from H, C6-12 aryl, C1-10 alkyl, C6-12 aryl, or C1-10 alkyl; R, and R1 can be taken together to form a monocyclic 6-8 membered ring; M is selected from Group VI-B metals; and m and n is independently 1 to 3. A process for obtaining the organometallic compound is also provided.

Abstract: Functionalized silicone polymers incorporating segments formed from medium-chain fatty acids are generally disclosed herein. Methods of using such compounds, for example, as surfactants, are also disclosed herein, as well as methods of making such compounds, for example, from medium-chain fatty acids derived from natural oils.

Abstract: A process of fabricating the waterproof coating may include selecting a textile material substrate, utilizing a sol-gel comprising a silane or silane derivative and metal oxide precursor to coat the substrate, and optionally coating the substrate with a hydrophobic chemical agent and/or other chemical agents to create a surface with nanoscopic or microscopic features. The process may utilize an all solution process or controlled environment for fabricating a fluorine-free waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment. The composition coatings for treating textile materials improve soil-resistance and stain-resistance of the textile materials while the compositions contain no fluorine-based chemicals. In addition, the composite solution may impart additional properties such as physical strength to the textile whilst retaining the original appearance.

Abstract: Doped glass scintillators and methods of fabricating the same are provided. Doped glass scintillators can be fabricated by a stereolithography process, and doping can be carried out before the green body composite formation so that homogeneity of the dopant is improved. The structures retain an amorphous structure through the fabrication process, and the vacuum sintering process assists with keeping the dopants in their luminescence-producing oxidation state.

Abstract: [Problem] To provide a film forming composition curable at low temperature and a film forming method using the same. [Means for Solution] A film forming composition comprising a polysilazane, an organic solvent and aspecific additive, and a film forming method comprising applying it on a substrate and curing. The specific additive is selected from the group consisting of (A) guanidines substituted by a hydrocarbylgroup, (B) crown ether amines containing oxygen and nitrogen as a member thereof, (C) cycloalkanes having an amino-substituted polycyclic structure, (D) oximes substituted by a hydrocarbyl group, and (E) imidazolines.

Abstract: Spherical organopolysiloxane resin particles with improved flow properties can be reproducibly obtained employing trialkoxysilanes having different hydrolysable chlorine contents by regulating pH in a first, acid hydrolysis step, and then adjusting pH in a second step to a desired value between 1 and 6. Particles are allowed to grow without agitation in a subsequent basic condensation step.

Abstract: A method for preparing a product includes combining starting materials including A) a siloxane oligomer having silicon bonded hydrogen atoms, B) an alkoxysilane having at least one aliphatically unsaturated group capable of undergoing hydrosilylation reaction and C) an iridium complex catalyst. The method can be used to produce a compound of formula (I). This compound can be used in a hydrosilylation reaction with a vinyl-functional polyorganosiloxane. The resulting product includes an ethyltrimethoxysilyl functional polyorganosiloxane useful in condensation reaction curable sealant compositions.

Abstract: The present invention relates to crosslinked silsesquioxane random copolymers absorbing both UVA and UVB although they contain only UVB absorbing chromophores, and methods preparing the same. Crosslinked polysilsesquioxane random copolymers prepared by the method of the present invention have good sensory and are safe as they are not absorbed into human body due to their high molecular weights. These polymers have desirable UV blocking function as they absorb wider range of UV including both UV B (280-320 nm) and UV A (320-400 nm) by excimer or exciplex formation between chromophores. Also, these polymers are useful for UV blocking cosmetics as they do not develop opaque white appearance in high concentration (30%).

Abstract: The present invention provides a perfluoro(poly)ether group containing silane compound of the formula (1): XRa?Rb?Rc???(1) wherein each symbols are as defined in the description.

Abstract: Provided is a method for producing an organopolysiloxane emulsion composition which contains an organopolysiloxane having a trialkyl group at a terminal thereof and having a viscosity of 50,000 mm2/s or more at 25° C., within a shorter time compared with the conventional methods. A method for producing an emulsion composition which contains an organopolysiloxane having a viscosity of 50,000 mm2/s or more at 25° C. and capped with a trialkylsilyl group, said method comprising: (I) emulsifying a mixture comprising (A) an organopolysiloxane, (B) a nonionic surfactant, (C) an anionic surfactant, (D-1) an acidic compound and (E-1) water to prepare an emulsion composition; (II) adding (D-2) an acidic compound and (E-2) water to the emulsion composition to perform emulsion polymerization; and (III) adding 0.001 part by mass or more of (F) a compound to the resultant product to perform emulsion polymerization again.

Abstract: A process of producing a silicone polymer includes hydrolyzing/condensating one or more compound in the presence of a base, thereby producing a silicone polymer that has an organic acid content of 0.0001 to 0.03 parts by weight with respect to 100 parts by weight of the silicone polymer. The process for producing a silicone polymer makes it possible to inhibit an increase in the molecular weight of a silicone polymer during high-temperature concentration in the steps of producing a silicone polymer.

Abstract: An object of the present invention is to improve the water dispersibility of the PVA-based resin and also to suppress the swelling of the PVA-based resin. The object is achieved by organic-inorganic composite particles, which have an average particle size of preferably 1 ?m to 3,000 ?m, including a polyvinyl alcohol-based resin and a component having a three-dimensional siloxane crosslinked structure that is derived from a hydrolysis-polycondensation product of an alkoxysilane and/or a low condensate thereof, wherein the alkoxysilane includes a T unit and/or a Q unit as a structural unit (s), and a Si content with respect to a total weight of the composite particles is 0.1 wt % or more and 23 wt % or less in terms of SiO2.

Abstract: There is provided an organopolysiloxane which is excellent in extensibility as well as solubility and dispersibility in water and lower alcohols. There is provided an organopolysiloxane with a poly(N-acylalkyleneimine) segment having a repeating unit represented by the following general formula (1): wherein R1 represents a hydrogen atom or an alkyl group, an aralkyl group, or an aryl group each having 1 to 22 carbon atoms, and n is 2 or 3, wherein the segment is bound to each of at least two silicon atoms of an organopolysiloxane segment as a main chain via an alkylene group containing a hetero atom, and wherein the number-average molecular weight of the segment is 800 to 1600, the mass ratio of the organopolysiloxane segment as a main chain and the poly(N-acylalkyleneimine) segment is 65/35 to 82/18, and the weight-average molecular weight of the organopolysiloxane segment as a main chain is 10,000 to 100,000.

Abstract: The present invention relates to coating compositions comprising A) alkoxy-functional arylpolysiloxanes and/or alkoxy-functional aryl-alkylpolysiloxanes, B) at least one crosslinking catalyst and optionally C) at least one alkoxysilane and D) optionally further auxiliaries and additives, where the fraction of the alkoxy groups is at least 10 wt %, based on the sum of components A) and C).

Abstract: The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolyzed to give silanol, bearing a tertiary amine functional group and the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine functional group.

Abstract: An underlayer film-forming composition used for an underlayer for a self-assembled film, including a polysiloxane and a solvent. The polysiloxane may be a hydrolysis-condensation product of a silane containing a phenyl group-containing silane, or a hydrolysis-condensation product of a silane containing a silane of Formula (1) in a ratio of 10 to 100% by mol relative to the total silane, or a hydrolysis-condensation product of silanes containing the silane of Formula (1), silane of Formula (2) [R4Si(R3)3 (2)], and silane of Formula (3) [Si(R5)4 (3)] in a ratio of silane of Formula (1): silane of Formula (2): silane of Formula (3) of 10 to 100:0 to 90:0 to 50 in terms of % by mol relative to the total silane.

Abstract: The present invention provides a silicone rubber-based curable composition with which a silicone rubber having excellent tensile strength and tear strength is obtained, a method for producing a silicone rubber using the silicone rubber-based curable composition, a silicone rubber, a molded article using the silicone rubber, and a tube for medical use formed from the molded article. The silicone rubber-based curable composition of the present invention is characterized in that it includes a vinyl group-containing organopolysiloxane (A), an organohydrogen polysiloxane (B), silica particles (C), a silane coupling agent (D), and platinum or a platinum compound (E).

Abstract: Described herein is a polydiorganosiloxane polyurethane, linear, block copolymer and methods of making thereof. The copolymers comprise soft segments that are polydioranosiloxane units and hard segments which are polyurethane residues.

Abstract: A silicon-containing compound having an alkoxysilyl-ethylene group at its terminal including at least one silyl-ethylene bond represented by the following structural formula (a) in one molecule, and according to this compound, a novel base polymer used in a room temperature-curable polyorganosiloxane composition capable of providing a cured product that is particularly excellent in rapid curability, storage stability and durability can be provided.

Abstract: An aryl group-containing siloxane composition is formed by introducing an alkaline earth-metal as a part of the reaction product of an organopolysiloxane having at least two alkenyl groups per molecule and an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule in the presence of a hydrosilylation catalyst, wherein at least one of the organopolysiloxanes includes an aryl group. The alkaline earth metal may be introduced via a heat stability composition or may alternatively be pre-reacted with the organopolysiloxane having at least two alkenyl groups per molecule. The aryl group-containing siloxane compositions may be utilized as an encapsulating layer for a light emitting device.

Abstract: The present invention relates to silicone copolymers of the formula (I) which are obtained by reaction of siloxanes having SiH groups with specific compounds having one or more groups reactive toward SiH groups, especially groups having C—C multiple bonds, and optionally at least one OH group, compositions comprising these silicone copolymers, a process for producing a polyurethane foam in which an appropriate silicone copolymer or a corresponding composition is used, polyurethane foam obtainable by the process, and articles comprising or consisting of a corresponding polyurethane foam.

Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient, reusable, and selective dehydrogenative silylation, crosslinking, and tandem dehydrogenative silylation-hydrogenation catalysts.

Abstract: A transition metal-containing compound having a tridentate chiral ligand bound to iron, cobalt, or nickel. The tridentate ligands are bound to the metal via nitrogen, phosphorus, and/or arsenic atoms. The tridentate ligand has a chiral group bound at least one of the nitrogen, phosphorus, and arsenic atoms, and a blocking group may be bound to another one of the nitrogen, phosphorus, and arsenic atoms. The transition metal-containing compound is useful for the catalyzing the asymmetric hydrogenation of olefins.

Abstract: The present invention relates to processes for the synthesis of saturated and unsaturated silahydrocarbons using iron-containing or cobalt-containing catalysts. The processes of the invention can produce tetraalkylsilanes, phenyltrialkylsilanes, substituted phenyltrialkylsilanes and their mixtures, which are useful as lubricants and hydraulic fluids, as well as alkyl alkenylsilanes, phenyl alkenylsilanes and substituted phenyl alkenylsilanes and their mixtures, which are useful in the synthesis of saturated silahydrocarbons and other organofunctional silanes.

Abstract: A functional fluorinated polyhedral oligomeric silsesquioxane (“F-POSS”). The F-POSS, has a chemical structure: where Rf represents a nonreactive organic group and at least one of R1 and R2 represents a chain comprising at least three carbon atoms.

Abstract: Curable composition providing, upon curing, an abrasion resistant, transparent, antistatic coating comprising: a) at least one conductive polymer, b) colloidal particles of at least one non-conductive oxide, c) at least one binder comprising at least one epoxysilane having at least two hydrolysable groups directly linked to the Si atom of the epoxysilane, and/or its hydrolysis product, said at least one conductive polymer and said colloidal particles of at least one non-conductive oxide being substantially not agglomerated, the content of said conductive polymer in the dry extract of said curable composition ranging from 0.1 to 10% by weight, preferably from 0.2 to 10% by weight and the content of the dry extract of said at least one epoxysilane in the dry extract of said curable composition ranging from 20 to 80% preferably 25 to 60% by weight based on the total weight of the dry extract.

Abstract: The present invention relates to a drainage aid composition and its use in pulp washing process. More particulary, this invention relates to drainage aid composition of silicone polyethers prepared via zinc catalized dehydrogenative coupling of alcohol terminated polyethers with silicone oligomers and polymers comprising of at least one silicon bonded hydrogen. The compostion of this invention exhibit excellent drainage properties.

Abstract: One purpose is to provide a silicone resin composition which provides a cured product having a large Abbe's number and a high brightness. A silicone resin composition including (A-1) an organopolysiloxane having a three-dimensional crosslinked structure, at least two alkenyl groups, and at least one monovalent aromatic hydrocarbon group bonded to a silicon atom, (A-2) a linear organopolysiloxane having alkenyl groups at at least both terminals of a molecular chain and at least one monovalent aromatic hydrocarbon group bonded to a silicon atom, (B-1) a linear organohydrogen polysiloxane having at least one silphenylene skeleton in a molecular chain and hydrosilyl groups at least both terminals of the molecular chain, in an amount such that a ratio of the number of the hydrosilyl groups in component (B-1) to a total number of the alkenyl groups in components (A-1) and (A-2) is 0.5 to 2, and (C) a hydrosilylation catalyst in a catalytic amount.

Abstract: [Object] To provide a photosensitive siloxane resin composition excellent in alkali-solubility and in sensitivity, and also to provide a pattern-formation method employing that. [Means] The present invention provides a photosensitive siloxane resin composition comprising: a siloxane resin having silanol groups or alkoxysilyl groups, a crown ether, a photosensitive material, and an organic solvent. This photosensitive composition is cast on a substrate, subjected to imagewise exposure, treated with an alkali aqueous solution, and cured to form a pattern.

Abstract: To provide an intermediate transfer belt for use in an electrophotographic apparatus, including as an outermost surface thereof: uniform convex regions formed by aligning independent spherical resin particles in a surface direction; and depressed regions formed of a lubricant layer which respectively lie between the convex regions.

Abstract: A composition is capable of curing via condensation reaction. The composition uses a new condensation reaction catalyst. The new condensation reaction catalyst is used to replace conventional tin catalysts. The composition can react to form a gum, gel, rubber, or resin.

Abstract: The present invention provides curable compositions comprising non-Sn organo-metal catalysts that accelerate the condensation curing of moisture curable silicones/non-silicones. In particular, the present invention provides Mn(III) complexes that are particularly suitable as replacements for organotin for sealant and RTV formulations. The Mn(III) complexes are comparable or superior to organotin such as DBTDL, superior to Mn(II) compounds, and exhibit certain behavior in the presence of components that allow for tuning or adjusting the cure characteristics of the present compositions and provide good adhesion and storage stability.

Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation and crosslinking catalysts.

Abstract: A substrate is surface treated using a composition for forming a film that comprises (A) an organoalkoxysilane, (B) an organopolysiloxane having a silicon-bonded hydrogen atom, and (C) a condensation reaction catalyst. This composition for forming a film can form a highly hydrophobic water repellent film provided with sufficient water shedding performance. It is possible to provide a highly hydrophobic substrate such as a heat dissipating body.

Abstract: Disclosed are a method for polymerizing polysilsesquioxane from a trialkoxysiloxane monomer, including: preparing an aqueous organic solution including a trialkoxysiloxane monomer, an organic solvent, water and a catalyst; and selectively preparing a polysilsesquioxane with a cage structure or a polysilsesquioxane with a ladder structure by adjusting the amount of the organic solvent or water in the aqueous organic solution, and a polysilsesquioxane with a cage structure or a polysilsesquioxane with a ladder structure prepared therefrom.

Abstract: Prepolymers having more than one alkoxysilyl function per chain end reactive towards epoxide groups as a constituent of curable compositions, and their use for producing adhesive-bonding and coating compositions, which may also be foamable, and also polymeric materials produced therefrom.

Abstract: The present invention relates to a method for preparing poly(organic oxidized silicon) particles having UV-absorbing groups, including reacting an organoalkoxysilane precursor having a UV-absorbing group selected from a group consisting of organotrialkoxysilane, diorganoalkoxysilane and a mixture thereof, in the presence of a base, with a silane compound selected from a group consisting of tetraalkoxysilane, alkyltrialkoxysilane, tetraalkoxysilane, aryltrialkoxysilane, dialkyldialkoxysilane, diaryldialkoxysilane, arylalkyldialkoxysilane and a mixture thereof, serving as a crosslinking regulator and UV stability enhancer, so as to prepare poly(organic oxidized silicon) particles selected from a group consisting of polysilsesquioxane, silsesquioxane-siloxane copolymer, silsesquioxane-silica copolymer, silsesquioxane-siloxane-silica copolymer and silsesquioxane-siloxane copolymer, having UV-absorbing groups.

Abstract: Compositions and methods for controlled polymerization and/or oligomerization of silane (and optionally cyclosilane) compounds, including those of the general formulae SinH2n and SinH2n+2, as well as halosilanes and arylsilanes, to produce soluble polysilanes, polygermanes and/or polysilagermanes having low levels of carbon and metal contaminants, high molecular weights, low volatility, high purity, high solubility and/or high viscosity. The polysilanes, polygermanes and/or polysilagermanes are useful as a precursor to silicon- and/or germanium-containing conductor, semiconductor and dielectric films.

Abstract: This disclosure relates to a polymer having the formula: wherein x is between 1 and about 100 an y is between about 99 and about 1, and x+Y=about 100. The disclosure also includes the use of the polymer in photovoltaic devices.

Abstract: A reaction product is formed utilizing a method that includes the step of combining a metal silicide and an aliphatic hydrocarbyl halide at a temperature of from 200° C. to 600° C. The aliphatic hydrocarbyl halide has the formula HaCbXc, wherein a is 0 or more, b is 1 or more, c is one or more, and X is halo. The method allows the reaction product to be formed in a predictable and controlled manner. Moreover, the components used in this method can be easily recycled and/or re-used in other processes.

Abstract: A mixture of at least two polyhedral oligomeric silsesquioxane (POSS) compounds is formed in the presence of rhenium on cerium(IV) oxide. The POSS compounds are formed utilizing a method that includes the step of combining (a) a trihalosilane, (b) hydrogen gas, and (c) the rhenium on cerium(IV) oxide, in a reactor at a temperature of from 250° C. to 600° C. to form the mixture. The trihalosilane has the formula RSiX3 wherein R is an alkyl group having from 1 to 4 carbon atoms, an aryl group, and wherein X is a halo atom. This method allows for the efficient, predictable, and accurate production of the POSS compounds with a minimized need for use of expensive separation techniques. In addition, this method produces the POSS compounds in commercially useful quantities as major reaction products thereby avoiding the need to run multiple reactions.

Abstract: There is disclosed a thermosetting composition for forming a silicon-containing film to form a silicon-containing film formed in a multilayer resist process used in lithography, including at least (A) a silicon-containing compound obtained by hydrolyzing and condensing a hydrolyzable silicon compound using an acid as a catalyst, (B) a thermal crosslinking accelerator (C) a monovalent or bivalent or more organic acid having 1 to 30 carbon atoms, (D) trivalent or more alcohol and (E) an organic solvent. There can be provided a composition for a silicon-containing film which can form a good pattern in a photoresist film, can form a silicon-containing film for an etching mask having a good dry etching resistance, can give a good storage stability and can be delaminated with a solution used in a delamination process in a multilayer resist process used for lithography, a substrate on which the silicon-containing film is formed, and further a method for forming a pattern.

Abstract: Disclosed is a method for producing a conjugated diene-based polymer capable of affording a polymer composition useful as a material for tires excellent in fuel economy. Specifically, there is disclosed a method comprising polymerizing monomer components comprising a conjugated diene compound and an aromatic vinyl compound using an alkali metal-based polymerization initiator in the presence of a hydrocarbon solvent and an ether compound represented by the following formula (1), wherein R represents an alkyl group having 1 to 8 carbon atoms.

Abstract: The present invention relates to an organopolysiloxane composition that can be vulcanized at room temperature into an elastomer that is crosslinked by polycondensation and that does not contain alkyltin-based catalysts and also to novel organopolysiloxane polycondensation catalysts.

Abstract: A method for easily producing high-purity polydimethylsilane or polydiphenylsilane, where by-products such as alkali metal salt and alkaline earth metal salt can be efficiently removed, is provided. Dimethyldichlorosilane or diphenyldichlorosilane is reacted with an alkali metal such as metal sodium and metal magnesium and/or an alkaline earth metal in an organic solvent such as toluene to obtain crude polydimethylsilane or crude polydiphenylsilane, methanol having dissolved therein an ether ester-type nonionic surfactant or a surfactant such as alkylbenzenesulfonate is added to the crude polydimethylsilane or the crude polydiphenylsilane to deactivate the remaining alkali metal and alkaline earth metal, and the crude polydimethylsilane or the crude polydiphenylsilane is washed with water in the presence of a surfactant to efficiently remove an alkali metal salt, an alkaline earth metal salt and the like, whereby high-purity polydimethylsilane or polydiphenylsilane is obtained.

Abstract: RTV-organopolysiloxane compositions are crosslinkable by polycondensation and are devoid of alkyltin-based catalysts; novel organopolysiloxane polycondensation catalysts are useful therefor.

Abstract: An organopolysiloxane which forms a cured product having a high refractive index, high transparency, and excellent heat resistance when subjected to a hydrosilylation reaction and which is represented by the following average unit formula: (R13SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d wherein, R1 are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; R2 is a group represented by R1 or a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group, but at least one of R1 or R2 in a molecule is an alkenyl group or a hydrogen atom, at least one R2 in a molecule is a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group; and a, b, c and d are numbers that satisfy: 0.01?a?0.8, 0?b?0.5, 0.2?c?0.9, 0?d<0.2 and a+b+c+d=1.

Abstract: The present invention relates to polyalkylsilsesquioxane particulates and a method of preparing the same, and more particularly provides the polyalkylsilsesquioxane particulates, of which moisture content is low, water repellency is high, and hygroscopic property in storage is low, and a method of preparing the same by end-capping silanol groups (SiOH) on the surface of the polyalkylsilsesquioxane particulates with alkyl groups by adding an alkoxytrialkylsilane having a triorganosilyl group thereto.

Abstract: The invention relates to new types of polyester-polysiloxane block copolymers, to processes for their preparation and to their use.

Abstract: One object of the present invention is to provide a method for preparing a polyorganosiloxane without using any catalyst having corrosivity and toxicity such as an alkaline earth metal catalyst in a condensation reaction of at least one organic silicon compound having a silanol group and/or an alkoxy silyl group. The present invention is a method for preparing a polyorganosiloxane, wherein the method includes a step of condensation reacting at least one organic silicon compound having at least one —OX group bonding to a silicon atom in the molecule, wherein X is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms, in the presence of a catalyst, wherein the catalyst is at least one selected from the group having hydroxides or oxides of elements in Groups 3-15 of the periodic table.