Abstract: The present invention relates to a polycarbonate resin composition comprising (A) 100 parts by weight of a polycarbonate resin and (B) 0.001 to 20 parts by weight of a siloxane compound which is a polyorganosiloxane having such a structure that at least (1) an aromatic hydrocarbon group, (2) an aliphatic or aromatic organic group having at least one carboxylic acid ester linkage, ether linkage or mixture thereof, and (3) a phosphorus atom-containing group, are bonded to the silicon atoms therein.

Abstract: A polymer compound having a silicon ester moiety is provided. The silicon ester moiety is located at one end of the polymer compound. The polymer compound contains as polymerized units ethylenically unsaturated monomer and at least one functional group that is pendant to the polymer backbone of the polymer compound. The polymer compound is useful for modifying the surface properties of inorganic substrates. Also provided are a method of preparing the polymer compound and an inorganic substrate that has been treated with the polymer compound.

Abstract: Oligomeric organosilanes useful in rubber mixtures are built up from the two structural units A and B, according to formula I The oligomeric organosilanes are produced by mixing and then co-oligomerizing the monomeric compounds of the structure types I and II

Abstract: The invention relates to novel crosslinkable copolymers of formula wherein the variables are as defined in the claims. The copolymers of the invention are especially useful for the manufacture of biomedical moldings, for example ophthalmic moldings such as in particular contact lenses.

Abstract: The present invention provides relates to a crosslinkable, proton-conducting membrane having a crosslinked structure, excellent in heat resistance, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature, characterized by comprising (a) an organic/inorganic hybrid structure (A) covalently bonded to 2 or more silicon-oxygen crosslinks and, at the same time, having a carbon atom, and (b) an acid containing structure (B) having an acid group, covalently bonded to a silicon-oxygen crosslink and having an acidic group; and provides a fuel cell using the same membrane.

Abstract: Methylene dithiepane silanes according to Formula I in which R1 is a saturated or unsaturated aliphatic or alicyclic hydrocarbon radical with 1 to 10 carbon atoms, which can be interrupted by one or more oxygen and/or sulphur atoms and can contain one or more ester, carbonyl, amide and/or urethane groups, or is an aromatic or heteroaromatic hydrocarbon radical with 6 to 18 carbon atoms, the hydrocarbon radicals being able to be substituted or unsubstituted; R2 has one of the meanings given for R1 or is absent; R3 has one of the meanings given for R1 or is absent; R4 is equal to —(CHR6)n—, —Y—CO—NH—(CHR6)n—, —Y—CO—NH—R5—, —(CHR6)n—S—R5—, —S—R5—, —CO—O—R5— or is absent, with n being equal to 1 to 4, R6 is hydrogen, C1 to C10 alkyl or C6 to C10 aryl, R5 has one of the meanings given for R1 and Y stands for an O or S atom or is absent; with R5 and R6 being abl

Abstract: The present invention relates to an energy absorbent medium which is compliant and conformable in the absence of an applied force, and stiffens in response to the rate of an applied force to dissipate energy. The medium comprises a blend of a polymer and a lubricant incompatible with the polymer to produce a conformable absorbent which exhibits dilatant (shear thickening) characteristics under high rates of force or stress. The polymer has reformable sacrificial chemical bonds which are broken under a high rate of deformation and which reform under static conditions. Suitable polymers for the invention include polyborosiloxanes. Applications for the medium include absorbent for sports padding, athletic equipment, motor vehicle seats, bulletproof vests, medical equipment, industrial equipment, weaponry, and playing fields.

Abstract: The invention relates to sulfur-containing oligosiloxanes which are liquid at −25-100° C., processes for their preparation and their use in silica-containing rubber mixtures which can be crosslinked with sulfur.

Abstract: Heat-stable poly(ethynylene phenylene ethynylene polysiloxene(silylene)) polymers preferably of determined molecular mass, optionally bearing at the end of the chain groups derived from a chain-limiting agent.

Abstract: A substantially aqueous emulsion and a coated product made with the emulsion are disclosed. The emulsion comprises, or is produced by combining, at least one fluorocarbon silane, a hydrolyzed product of the fluorocarbon silane, or combinations thereof; a silicon-containing compound; and a surfactant. The coated product can comprise a substrate, an undercoat layer, and an emulsion layer.

Abstract: This invention relates to chemical compositions comprising one or more urethane oligomers of at least two repeating units selected from the group consisting of fluorine-containing urethane oligomers and long-chain hydrocarbon-containing urethane oligomers. These urethane oligomers comprise the reaction product of (a) one or, more polyfunctional isocyanate compounds; (b) one or more polyols; (c) one or more monoalcohols selected from the group consisting of fluorochemical monoalcohols, optionally substituted long-chain hydrocarbon monoalcohols, and mixtures thereof; (d) one or more silanes; and optionally (e) one or more water-solubilizing compounds comprising one or more water-solubilizing groups and at least one isocyanate-reactive hydrogen containing group. The chemical compositions of the present invention can be applied as coatings and these coatings can impart stain-release characteristics and resist being worn-off due to wear and abrasion.

Abstract: Disclosed are compounds comprising both disulfide functionality and electron donor functionality or alkoxy siloxane functionality, and curable compositions comprising compounds comprising both disulfide functionality and electron donor functionality, or electron acceptor functionality, or alkoxy siloxane functionality.

Abstract: This invention relates to a dual curing silicone composition with an enhanced depth of cure. This composition incorporates an acylphosphine oxide or diacylphosphine oxide, the compatibility of which with the silicone is promoted through the use of a polar carrier. The composition may also include a second photoinitiator that is different than the acylphosphine oxide.

Abstract: The present invention relates to a low dielectric substance essential for a next generating electrical device such as a semiconductor device having high performance and high density, and particularly to a process for preparing a low dielectric organosilicate polymer, a hydrolysis condensation product of a carbon-bridged oligomer; a process for manufacturing an insulating film using an organosilicate polymer prepared by the process; and an electrical device comprising an insulating film prepared by the process The organosilicate polymer prepared according the process of the present invention is thermally stable, and has good film-forming properties, excellent mechanical strength and crack resistance, and the film manufactured therefrom has excellent insulating properties, film uniformity, dielectric properties, crack resistance, and mechanical strength.

Abstract: Molecular weight-enlarged, homogeneously soluble ligands are provided that are especially useful for hydrogenation catalysts, wherein the ligands contain homochiral active centers of bis(3,4-diarylphosphinyl)pyrrolidines, and their use in producing cataylsts for enantioselective reactions, as well as the catalysts thus produced.

Abstract: Disclosed is an organic domain/inorganic domain hybrid material comprising: an organic domain comprising at least one water-soluble or water-dispersible organic polymer having a plurality of functional groups, and an inorganic domain, the organic domain and the inorganic domain being ionically bonded to each other through the functional groups of the organic polymer to form an ionically crosslinked structure, the inorganic domain comprising a plurality of inorganic bridges, each of which independently comprises at least one silicon atom, at least two oxygen atoms and at least two divalent metal atoms, wherein the weight ratio of the organic domain to the inorganic domain is at least 1.0.

Abstract: A composition and method for making a silicone composition is provided which comprises at least one polysiloxane or silicone resin containing at least one linker, and at least one molecular hook.

Abstract: Oligomeric organosilanes useful in rubber mixtures are built up from the two structural units A and B, according to formula I 1

Abstract: This invention relates to chemical compositions comprising one or more urethane oligomers of at least two repeating units selected from the group consisting of fluorine-containing urethane oligomers and long-chain hydrocarbon-containing urethane oligomers. These urethane oligomers comprise the reaction product of (a) one or more polyfunctional isocyanate compounds; (b) one or more polyols; (c) one or more monoalcohols selected from the group consisting of fluorochemical monoalcohols, optionally substituted long-chain hydrocarbon monoalcohols, and mixtures thereof; (d) one or more silanes; and optionally (e) one or more water-solubilizing compounds comprising one or more water-solubilizing groups and at least one isocyanate-reactive hydrogen containing group. The chemical compositions of the present invention can be applied as coatings and these coatings can impart stain-release characteristics and resist being worn-off due to wear and abrasion.

Abstract: A room temperature-curing organopolysiloxane composition including (A) 100 parts by weight of at least one of two specific organopolysiloxanes; (B) 0.1 to 30 parts by weight of a silane compound having in its molecule an average of at least two Si-bonded hydrolyzable groups and in which the remaining Si-bonded group(s) is/are a group(s) selected from the group consisting of methyl, ethyl, propyl, vinyl and phenyl groups; a partial hydrolysis-condensation product thereof; or a mixture of these; and (C) 0.1 to 10 parts by weight of a mixture of siloxanes having degrees of polymerization of 2 to 10. The mixture of siloxanes is a partial hydrolysis-condensation product of a silane compound having a group selected from amino, epoxy, mercapto, acryloyl and methacryloyl groups each bonded to the silicon atom through a carbon atom and having a Si-bonded hydrolyzable group. The composition has superior adhesion to various resins.

Abstract: Sulfur-functional polyorganosiloxanes corresponding to the general formula I with substituents as described in the specification, corresponding to the general formula I 1

Abstract: A water and mud repellant compound is provided for frictionally engaged rubber surfaces, such as treads, and, in particular, to a compound for use in the manufacture of a rubber track belt on a mobile track system of a tractor.

Abstract: A high energy radiation-curable composition comprising a partial hydrolysis-condensation product of (A) a mixture of an alkoxy containing organopolysiloxane and alkoxysilanes and (B) a multifunctional acrylate, and a resin molding coated with the composition. The composition forms coatings of superior curability, water repellency, water resistance, oil repellency, transparency, flexibility, and scratch resistance, especially on resin moldings.

Abstract: A method is provided for making emulsion polymerized silicone rubber having an average particle size of from about 400 nm to 2 microns and grafts thereof. Thermoplastic blends having improved weatherability and impact strength are also provided based on the use of a thermoplastic organic polymer and a graft of such emulsion polymerized silicone rubber as an impact modifier.

Abstract: This invention provides a process for the manufacture of organopolysiloxane compositions, an in particular sealants, comprising mixing a polymer, preferably silicone, a surface active filler, an organosilane such as a cross-linker, a catalyst and an adhesion promoter, in which the organosilane (iii) is mixed with surface active filler (ii) prior to the introduction of the adhesion promoter. The resulting sealant compositions have improved adhesion properties.

Abstract: A method of treating a metal substrate by applying a coating of a silane composition having at least one substantially unhydrolyzed aminosilane having one or more secondary or tertiary groups. Methods of adhering a polymer (such as rubber) to a metal substrate are also provided.

Abstract: A composition and method for making a silicone composition is provided which comprises at least one polysiloxane or silicone resin containing at least one linker and either one or two molecular hooks.

Abstract: The present invention relates to a process for preparing multifunctionalized polyorganosiloxanes (POSs) comprising alkoxyl functional siloxyl units and siloxyl units each having an SH functional group, which consists in introducing the SH functional group by the reaction of H2S on a precursor POS of formula: A—(RXSiO)a—(RYSiO)b—B where R is especially a C1-C6 alkyl radical, X is a C1-C15 alkoxyl radical, Y is a C2-C30 hydrocarbon group which includes an ethylenically unsaturated group from which the SH functionality derives, a is a number ranging from 1 to 150, b is a number ranging from 1 to 150, the number a+b ranging from 2 to 300 and A and B are terminal groups which are selected respectively, from, in particular, on the one hand (R)3SiO— radicals taken alone or as mixtures with (R)2XSiO— and/or R(X)2SiO— and/or (X)3SiO— radicals and on the other hand —Si(R)3 radicals taken alone or as mixtures with —SiX(R)2 and/or —Si(X)2R and/or —Si(

Abstract: The invention concerns a novel cross-linkable composition and its use for preparing novel polyurethane films. The cross-linkable composition comprises (a) 20 to 50 wt. % of polyisocyanate, (b) 50 to 80 wt. % of acrylic oligomer containing hydroxyl groupings whose content in weight relative to the acrylic oligomer is between 2.5 and 4.5% and (c) 1 to 10 wt. % of a silicon fluid of formula (1).

Abstract: Polymers comprising recurring units of formula (1) are provided wherein R1 is a straight, branched or cyclic divalent C1-20 hydrocarbon group or a bridged cyclic hydrocarbon group, R is hydrogen atom or an acid labile group, 0≦m≦3, 0≦n≦3 and 0≦m+n≦6.

Abstract: A fluorine-containing polymer, having a number-average molecular weight of 500 to 100,000 and represented by the following general formula Rf—(OC3F6)a—(OC2F4)b—(OCF2)c—X—Y—Z—MPnRm−n or PnRm−nM—Z—Y—X—(OC3F6)a—(OC2F4)b—(OCF2)c—X—Y—Z—MPnRm−n (wherein Rf is a perfluoroalkyl group; a, b and c independently represent 0 or a number equal to or greater than 1, with the proviso that the sum of a, b and c is at least 1; X is a group represented by the formula: —(O)d—(CF2)e—(CH2)f—; Y is a divalent polar group; Z is a group represented by the formula: —(CH2)g—; M is a metal atom; R is a hydrocarbon group; P is a hydrolyzable polar group; m is an integer equal to “(valency of M)−1”; and n is an integer of 1 to m), exhibits excellent stainproof property against oily dirt and can form on a substrate a stainproof layer having an excellent stainproof pro

Abstract: Oligomeric organosilanepolysulfanes which are built up from the three structural units A and/or B and/or C, in which Y=H, CN, —(CH2)nSiRR1R2; n=1-8, R, R1, R2 and R3, independently, represent H, (C1-C4)alkyl, (C1-C4)alkoxy, halogen or a OSiR1R2R3 group; x, as a statistical average, is 1-6, z, as a statistical average, is 2-6, n is 1-8 and o, p and q are each a whole, positive number between 1 and 40 where o+p+q may be ≧2 and <40, with the proviso that at least one structural unit A or B is present, and their use in rubber mixtures and to produce molded items, in particular pneumatic tires.

Abstract: Disclosed are polyhedral organosilicon compounds which are possible to be polymerized and can form a film excellent in adhesiveness to a substrate, having a high hardness, a high transparency and having water and oil repellency, and comprise organofluoro groups or both of organofluoro groups and reactive functional groups, the compounds being soluble in an organic solvent and stable. Organosilicon compounds which have perfluoroalkyl groups or both perfluoroalkyl groups and reactive functional groups and which have a polyhedral structure have the following formulas of (I), (II) and (III): [Rf1—X1—(CH2)a—SiO1.5]m  (I) [Rf1—X1—(CH2)a—SiO1.5]m[Rf2—(X2)c—(CH2)b—SiO1.5]n  (II) [Rf1—X1—(CH2)a—SiO1.5]m[R—(X2)c—(CH2)b—SiO1.

Abstract: Silicone mold release compositions which are a stable blend of hydrophobic-modified organopolysiloxane and an aminoorgano- or mercaptoorgano-functional organopolysiloxane, or a solution in organic solvent of a stable or unstable blend, provide exceptional mold release properties while retaining paintability of molded parts.

Abstract: Provided are novel, electropolymerizable monomers of the formulae: wherein R1, R2 and R3 are selected from the group consisting of —H, —O(CH2)nCH3, wherein n has a value of 0 to 11 and m has a value of 1 to 4, and wherein no more than one of R2 and R3 is —H. Also provided are polymers resulting from the electropolymerization of these monomers.

Abstract: Terminally functionalized silicone polymers prepared using protected functionalized initiators and processes for preparing the same. The silicone polymers includes protected, functionalized silicone polymers, such as mono-functional, homotelechelic, heterotelechelic, macromonomer, and radial polymers. The protected functionalized polymers can be optionally deprotected to afford functionalized silicone polymers.

Abstract: Provided is a novel mercaptomethylphenyl group-containing diorganopolysiloxane compound represented by the following Formula (1): wherein R1 represents methyl or phenyl; R2 represents a linear or branched alkyl group having 1 to 6 carbon atoms, a phenyl group or A; l represents an integer of 0 to 500; m represents an integer of 0 to 1,000; n represents an integer of 0 to 500; p represents an integer of 0 to 2; and A is a group represented by Formula (2): wherein X represents a linear or branched alkylene group having 2 to 20 carbon atoms; at least one of R3, R4, R5, R6 and R7 represents mercaptomethyl, and the remaining groups each represent a hydrogen atom or a linear or branched alkyl group having 1 to 20 carbon atoms.

Abstract: Radiation-curable compositions, having high elongation at break and toughness after cure can include the following pre-mixture components: a) a polymer, oligomer or monomer having at least one (meth)acrylate functional group; b) an oligomer or monomer, exclusive of (meth)acrylate functional groups, having an ethylenically unsaturated functional group; and c) an elongation promoter; wherein the composition, after radiation-cure, has an elongation at break of at least about 200%. Glass substrates and optical fibers are coated with the radiation-curable composition. Monofilament fiber or a plurality of fiber filaments, such as sewing thread, are coated with the radiation-curable binder composition, which after cure, demonstrates high elongation at break.

Abstract: The present invention relates to boron-containing carbosilanes, a process for their preparation, boron-containing oligo- or polycarbosilazanes, a process for their preparation and their use and silicon borocarbonitride ceramics and a process for their preparation.

Abstract: The invention provides a polyorganosiloxane catalyst with both of a sulfonic acid group-containing hydrocarbon group and a mercapto group-containing hydrocarbon group, wherein the total amount of the sulfonic acid group-containing hydrocarbon group and the mercapto group-containing hydrocarbon group is within a range of 0.3 to 2.0 &mgr;mol per unit surface area (1 m2) of the polyorganosiloxane catalyst. The catalyst of the invention is highly active for the reaction to produce bisphenol A from acetone and phenol, with the deterioration of the catalyst under extreme suppression.

Abstract: A shelf-stable water-borne dispersion or solution that cures rapidly and at low temperatures when coated onto a substrate can be prepared with an aqueous-based solution or stable aqueous dispersion of a polymer having a backbone containing pendant silanol groups which are sufficiently neutralized to inhibit silanol condensation.

Abstract: A modified polyisocyanate which has a high emulsifying/dispersing ability in aqueous resin compositions (solution or dispersion) and can be used advantageously as a curing agent or cross-linking agentis disclosed. The modified polyisocyanate is comprised of a reaction product of a polyisocyanate (an aliphatic or alicyclic polyisocyanate such as 1,6-diisocyanate hexane or a derivative thereof) with one of the following components (1) to (3): (1) a nonionic emulsifying agent which contains active hydrogen atoms reactive with isocyanate group, has a hydrophile-lipophile balance (HLB) value of 17 or less and contains 15 to 35 in average of ethylene oxide units in one molecule, (2) a polyoxyalkylene alkylaryl ether which contains active hydrogen atoms, has an HLB value of from 5 to 17 and contains ethylene oxide unit and (3) a nonionic emulsifying agent which contains active hydrogen atoms and a coupling agent (e.g.

Abstract: A curable composition comprising (A) a fluorinated organic silicon compound of the formula: Z—R1—Rf—R1—Z wherein Rf is a divalent fluorinated polyether group, R1 is a divalent hydrocarbon group, and Z is a silyl or siloxane group terminated with OH, (B) an organic silicon compound as a crosslinking agent, and (C) a condensation accelerator is curable to depth at room temperature even in the absence of moisture.

Abstract: A coating composition comprising (A) a hydrolyzate or partial condensate, or both, of an organosilane compound represented by the following formula (1), (R1)nSi(OR2)4−n  (1) wherein R1 is a hydrogen atom or a monovalent organic group having 1-8 carbon atoms, R2 is an alkyl group having 1-5 carbon atoms or an acyl group having 1-6 carbon atoms, and n is an integer from 0 to 2, (B) at least one ultraviolet ray absorbing component selected from the group consisting of fine semiconductor particles, semiconductor sols, and organic compounds having ultraviolet ray absorbing capability, and (C1) water and/or an organic solvent. The coating composition exhibits excellent storage stability and produces coating films with good appearance, superior adhesion properties, weather resistance, high hardness, and superb UV absorbing capability.

Abstract: Macroporous, strong-acid polysiloxane ion exchange resins which have been converted to the silver or mercury form are utilized to remove iodides from non-aqueous organic media. In a particularly preferred method, hexyl iodide is removed from acetic acid.

Abstract: Water-soluble, i.e. easily dispersible, amino-functional polyorganosiloxanes obtained by radical polymerization of vinyl compounds containing amino or ammonium groups onto polyorganosiloxanes which contain at least one mercapto group. They are suitable as textile finishing aids, surfactants and emulsifiers.

Abstract: The invention relates to organopolysiloxanes with dye residues comprising units of the general formula R1a(RO)bAcR2dSiO(4−a−b−c−d)/2  (I) wherein R can be identical or different and is hydrogen atom or monovalent, substituted or unsubstituted hydrocarbon radical, R1 can be identical or different and is hydrogen atom or monovalent, SC-bonded hydrocarbon radical, R2 can be identical or different and is substituted, monovalent, Si—C bonded hydrocarbon radical, A can be identical or different and is a radical of a water-soluble organic dye containing at least one of sulfonic acid groups, sulfonate groups, or metal complexes thereof, a is 0, 1, 2, or 3, b is 0, 1, 2 or 3, d is 0, 1, 2, or 3 and c is 0, 1 or 2 with the proviso that the sum of a, b, c and d is less than or equal to 3, the organopolysiloxanes have at least one radical, and, in the units of the formula (I) where c is other than 0, d is 0.

Abstract: A polysiloxane composition comprising (A) a polysiloxane having a group represented by the formula (I): ≡Si—OR  (I) wherein, R is a C1 to C18 substituted or unsubstituted monovalent hydrocarbon group or ether bond containing an organic group; and (B) at least 1 ppm of (a) a compound having an N, P, S, Sn, or As component or (b) an acetylene alcohol and a rubber composition containing the same. Specific polysiloxanes (A) contain both formula (I): ≡Si—OR as well as Si—H.

Abstract: A method for the preparation of hydrophobic precipitated silica. The method comprises contacting an aqueous suspension of a hydrophilic precipitated silica with (1) a catalytic amount of an acid and (2) an organosilicon compound in the presence of (3) a water-miscible organic solvent in an amount sufficient to facilitate reaction of the hydrophilic precipitated silica with the organosilicon compound to form a hydrophobic precipitated silica.

Abstract: A group fo liquid crystalline compounds defined by formulas (1) and (2) including polymers, monomers, oligomers and intermediates for their preparation. Also included are symmetric and non-symmetric poly(dimethylsiloxy) compounds having end groups derived from Formulas (1) and (2).