Abstract: The present invention relates to a sulfur-cross-linkable elastomeric composition that is useful for the manufacture of tires. This elastomeric composition is based on at least one isoprene elastomer (in particular natural rubber), a reinforcing inorganic filler (in particular, silica), and an (inorganic filler/isoprene elastomer) coupling agent. The coupling agent is a multifunctional polyorganosiloxane (POS), which comprises functions denoted as “Y” and “X”, wherein the Y function is at least one hydroxyl or hydrolyzable function grafted to the silicon atoms of the coupling agent and the X function is a group bearing at least one activated ethylene double bond and is grafted to the silicon atoms of the coupling agent. This POS is, in particular, a POS having an imide, acid or ester function, the ethylene double bond of which is activated by at least one adjacent carbonyl group (—C?O).

Abstract: A reinforced polytrimethylene terephthalate resin composition comprising a polytrimethylene terephthalate and an inorganic filler, wherein an amount of the inorganic filler falls within the range from 5 to 70% by weight based on a total weight of the resin composition, an amount of a grafting polytrimethylene terephthalate layer provided on a surface of the inorganic filler falls within the range from 0.1 to 2 parts by weight based on 100 parts by weight of the inorganic filler, and a melt viscosity measured at a resin temperature of 260° C. and a shear rate of 1 rad/sec of a resin component in the resin composition is not more than 600 Pa·s.

Abstract: Powder coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise one or more particles that have been modified to render the particles more surface active. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.

Abstract: A soft resin pellet is provided comprising at least one liquid (B) having a kinematic viscosity at 25° C. ranging from 0.5 to 100,000 cSt (centistokes) and a surface tension at 25° C. ranging from 10 to 50 dyn/cm, and at least one fine powder (C) of an average particle diameter of not more than 50 ?m, which fine powder adheres to the surface of pellets of at least one soft resin having a tensile modulus determined according to ASTM D-658 not higher than 1600 Mpa.

Abstract: A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base.

Abstract: The present invention provides a dental paste, methods of making and using the dental paste, and compositions prepared therefrom. The dental paste includes (a) a filler including porous, non-pyrogenic silica having a silane treated surface and being substantially free of heavy metals and (b) a filler including non-agregated primary silica particles, with the fillers being dispersed in a hardenable resin. Fillers including porous, non-pyrogenic silica, and methods of making and using the fillers, are also provided.

Abstract: The invention relates to the preparation of a suspension of precipitated silica in a silicone oil, this suspension being usable for the production of silicones crosslinkable by polyaddition or polycondensation (RTV elastomers). The object of the invention is to seek a compromise between on the one hand the cost and on the other hand the rheology and mechanical properties of the final RTVs. The invention achieves this object by providing a process for the preparation of a suspension of precipitated silica, treated with hexamethyldisilazane (HMDZ), in a crosslinkable silicone oil. This HMDZ is introduced in at least two fractions. The 1st fraction on the one hand corresponds to a proportion less than or equal to 15% by dry weight, based on the total amount of HMDZ, and on the other hand is first brought into contact with the precipitated silica and the water. The invention further relates to the production of a silicone elastomer composition from this suspension and to the composition thus obtained.

Abstract: Surface-coated hard material with a hardness (HV0.2)?10Gpa, the surface of which has a polysiloxane coating. Method for producing this, in which a hard grain is mixed with a polysiloxane, a polysiloxane emulsion, or a diluted polysiloxane emulsion. Use of a hard material of this type as a wear-reducing agent in lacquer coatings.

Abstract: An electromagnetic wave-absorbing composition is obtained by dispersing in a base polymer a magnetic powder coated with electrically insulating inorganic fines and optionally, a heat conductive powder. The composition has a high breakdown voltage, and can be applied to any adequate site within electronic equipment without a need to pay substantial attention to short-circuits.

Abstract: Corona resistant, high temperature polymeric materials are disclosed which are generally useful in high voltage wire insulation or similar type applications. The materials contain composite fillers having an organic component with excellent dispersion properties in certain organic solvents, depending upon the particular embodiment selected, and an inorganic ceramic oxide component generally having excellent corona resistance properties.

Abstract: A rocket motor insulation including an elastomer-based polymer is improved in its processability by the addition of silica particles treated with a hydrophobic coating. The insulation also preferably includes a metallic coagent cross-linker, which when used in combination with the hydrophobic silica particles increases the tear strength and the elasticity of the insulation, while at the same time not adversely affecting the bonding characteristics of the insulation.

Abstract: A silica-based material that includes a silica-based substrate and a polymerized organic material disposed thereon. The polymerized organic material is made from reactive organic moieties bonded to the silica-based substrate.

Abstract: A continuous process of preparing a heat-vulcanizable filled silicone composition, comprises mixing filler and high viscosity silicone polymer continuously in a first co-rotating intermeshing twin screw extruder; and compounding a filler and silicone polymer mixture from the first extruder in a second single shaft reciprocating extruder. Another continuous process of preparing a heat-vulcanizable filled silicone composition, comprises forming a premix? of filler and high viscosity silicone polymer; mixing the premix and additional high viscosity silicone polymer continuously in a co-rotating intermeshing twin screw extruder; and compounding a filler and silicone polymer mixture from the co-rotating intermeshing twin screw extruder in a second single shaft reciprocating extruder.

Abstract: This invention relates to a composition comprising (A) an ethylene-?-olefin having 3 to 20 carbon atoms-non-conjugated polyene copolymer, (B) a specific fine-powdered silicic acid and/or a silicate having a specific surface area of 5 to 500 m2/g (BET adsorption amount: ISO 5794/1, Annex D), (C) at least one kind of ?,?-unsaturated carboxylic acid metal salts, (D) an organic peroxide, further optionally (E) one antioxidant selected from sulfur-containing antioxidants, phenolic antioxidants and amine antioxidants, and/or (F) sulfur, and this invention relates to a rubber product obtainable by crosslinking the above composition.

Abstract: A process for preparing a composite material is disclosed wherein the process comprises: A) sizing a natural fiber with a reactive organosilane; B) mixing the sized natural fiber with a polyolefin resin; and C) adding a functionalized polyolefin coupling agent to the mixture of the sized natural fiber and the polyolefin resin to provide said composite material.

Abstract: An active energy ray-curable antistatic coating composition contains (A) inorganic oxide fine particles having a side chain having a molecular weight of at least 300 and having a functional group and (B) an antistatic agent containing at least a quaternary ammonium salt group-containing polymer, a quaternary ammonium salt group-containing silane coupling agent and/or a hydrolysis condensate of the silane coupling agent, and optionally contains (C) a polyfunctional (meth)acrylate having at least 3 (meth)acryloyl groups in a molecule.

Abstract: The present invention provides a process, which includes: coating at least a portion of a surface of at least one silica particle with at least one wax, wherein the coating is carried out in at least one gas at a temperature above the melting point of the wax and below the decomposition temperature of the wax, to obtain at least one wax-coated silica particle. Other embodiments of the present invention provides processes for impregnating the silica particle with wax and uses of the wax-coated or wax-impregnated particles.

Abstract: A marking (4, 5) is formed in an outer layer (3; 23; 43) comprising a polymer material with an inorganic main chain and with certain visual properties by at least one region (9; 29; 49) of the outer layer (3; 23; 43) of which at least one of the visual properties shows a deviation, visible to the human eye, from the same property in other regions (9; 29; 49?) of the outer layer (3; 23; 43). Since the marking (4, 5) is obtained by means of at least a locally changed visual property of material of the outer layer (3; 23; 43) itself, the marking (4, 5) does not constitute a substantial interruption of the outer layer (3; 23; 43), and the application of the marking (4, 5) does not cause any substantial unevennesses in the outer layer (3; 23; 43). The following are further described: an element having such an outer layer (3; 23; 43) and a method of applying such a marking (4, 5).

Abstract: The present invention provides a hydrophobic precipitated silica having the following properties: carbon content 1.0-8.0% methanol wettability ?20-55% reflectance >94% BET/CTAB ratio ??1 DBP absorption <250 g/100 g BET surface area ?50-110 m2/g CTAB surface area 100-150 m2/g Sears number <13. The present invention also provides methods for making and using the hydrophobic precipitated silica and articles and compositions which include the same.

Abstract: The invention is an insulation material which comprises a silicon based matrix and a plurality of non-metallic beads supported in the matrix. In one embodiment of the invention, the matrix comprises a platinum cured, addition cured silicon material and the beads comprise a mean diameter of less than about 60 microns and an isostatic strength of at least about 10,000 psi. The insulation material may be used in conjunction with subsea oil and gas production equipment, such as pipelines, wellheads and christmas trees.

Abstract: The present invention is directed to a composition comprising a white pigment or extended white pigment surface treated with a silane having at least one functional group capable of reacting with acids and anhydrides, at least one polymeric material and a compatibilizer. Once treated, the pigment has improved processability and dispersibility in polymeric materials. Silanizing the pigment also enhances the brightness (increase whiteness and reduce yellowness) of the pigment.

Abstract: The present invention provides a process, which includes: a) suspending: at least one filler selected from the group including silicatic filler, oxidic filler, and a mixture thereof, 0.5 to 7% by weight, based on the weight of the filler, of at least one polysiloxane hydrophobicizing agent, and 0.1 to 2% by weight, based on the weight of the filler, of at least one non-ionic surfactant, in water at a temperature of 10 to 60° C., to prepare a suspension having a solids content of 0.5 to 15% by weight, based on the weight of the suspension; b) contacting a rubber latex emulsion and the suspension, to prepare a mixture; c) contacting the mixture with at least one acid to lower the pH of the mixture to 2.

Abstract: A room temperature curable organopolysiloxane composition comprising (A) a diorganopolysiloxane end-capped with a hydroxy or alkoxy group, (B) a silane crosslinker, (C) an aluminum hydroxide powder surface treated with a silane, siloxane or silazane, and (D) a platinum catalyst is shelf stable and smoothly extrudable prior to curing, and cures into a silicone rubber having long-lasting self-extinguishing properties. The composition is best suited as an adhesive to electrical and electronic parts.

Abstract: The present invention relates to a tire with a carcass ply and/or circumferential carcass belt component comprised of a natural rubber-rich diene-based rubber composition which contains a dispersion of precipitated silica reinforcement, with coupling agent, to a substantial exclusion of carbon black.

Abstract: A photocurable dental restorative comprising (i) 100 parts by weight of a polymerizable monomer, (ii) 0.01 to 5 parts by weight of a photopolymerization initiator of acylphosphine oxide, and (iii) 200 to 1900 parts by weight of an inorganic filler, wherein the inorganic filler (iii) is a mixed filler of: (A) irregular-shaped inorganic particles having an average particle size of not smaller than 0.1 ?m but smaller than 1 ?m; (B) spherical inorganic particles having an average primary particle size of not smaller than 0.1 ?m but not larger than 5 ?m; and (C) fine inorganic particles having an average primary particle size of not larger than 0.1 ?m; which are so blended as to satisfy the following mass ratios {circle around (1)} to {circle around (3)}: {circle around (1)} mA/(mB+mC)=0.2 to 3 {circle around (2)} mB/(mB+mC)=0.5 to 0.99 {circle around (3)} mC/(mB+mC)=0.01 to 0.5 where mA, mB and mC are masses of the inorganic particles (A) to (C).

Abstract: Provided is a flame-retardant polycarbonate resin composition comprising (A) 100 parts by weight of a polycarbonate resin, (B) from 0.2 to 10 parts by weight of a core/shell type, grafted rubbery elastomer, (C) from 0.02 to 5 parts by weight of an organic alkali metal salt and/or an organic alkaline earth metal salt, and (D) from 0.02 to 3 parts by weight of a polyfluoro-olefin resin. Not containing a halogen compound for flame retardation, it has good flame retardancy, and its moldability, impact resistance, thermal stability, wet heat resistance and recyclability are all good.

Abstract: A rubber composition obtained by blending, into 100 parts by weight of a rubber, 10 to 100 parts by weight of carbon black surface-treated with a silane compound having an amino group (or groups), wherein at least 0.1 part by weight of the rubber ingredient is modified with maleic anhydride, whereby the heat buildup resistance and abrasion resistance of the rubber composition are enhanced and the scorch resistance is improved.

Abstract: With the hardener particle of the present invention, because siloxane or an alkoxy group is bonded to a central metal located on a surface, an adhesive prepared by dispersing the hardener particles in an epoxy resin together with a silane coupling agent hardly causes reaction between the hardener particles and the silane coupling agent at ambient temperature whereby the preserving property of the adhesive is high. Because no siloxane is bonded to metal chelate or metal alcoholate at the part other than the surface of the hardener particles, the hardener particles are broken when the adhesive is heated, and the metal chelate and the metal alcoholate on the part other than the surface of the hardener particles reacts with the silane coupling agent to form cation, thereby polymerizing the epoxy resin with the cation to harden the adhesive even at low temperature within shorter time.

Abstract: In a silicone rubber composition of the condensation curing type comprising a diorganopolysiloxane having at least two silicon-attached hydroxyl or hydrolyzable radicals as a base polymer, and a silane having at least two hydrolyzable radicals or a partial hydrolytic condensate thereof, at least 2 mol % of the entire substituent radicals attached to silicon atoms in the diorganopolysiloxane are monovalent hydrocarbon radicals having at least two carbon atoms. The cured composition has excellent non-staining and sealing properties, and when applied as a coating, filled into joints, or used as a solid gasket, it does not cause staining of the building, joints, or the area around joints.

Abstract: In fluorinated curable compositions comprising alkenyl group-bearing perfluoropolyethers as the base polymer to ensure chemical resistance and solvent resistance together with an organohydrogensiloxane and a platinum group metal catalyst, a hydrophobized silica fine powder is used in combination therewith to render the compositions thixotropic.

Abstract: A method for making a silicic acid containing rubber base composition includes providing composition ingredients of rubber, silicic acid, silane and additional additives except for vulcanization ingredients. First and second mixers separate from each other are provided wherein the ingredients except for the vulcanization ingredients can be mixed. All of the composition ingredients are introduced into the first mixer except for the vulcanization ingredients simultaneously or at time intervals. The composition ingredients introduced into the first mixer are mixed to a composition. The composition formed in the first mixer is transferred directly into the second mixer without an intermediate storage thereof. The transferred composition formed in the first mixer is mixed at least almost to completion in the second mixer with the temperature lying in the temperature range of 130° C. to 180° C.

Abstract: A release agent and a release liquid which are used for the manufacture of labels, double-sided tapes, etc., are disclosed. The release agent and the release liquid provide improved adhesion between a substrate and a release layer, and excellent peel strength betwveen the release layer and an adherent. The release agent includes a dispersion of a vinyl-modified colloidal silica, a dispersion of a platinum chelate catalyst, and a polysiloxane water-dispersible silicone emulsion. The release liquid is obtained by dispersing the release agent in water so as to have a solid content of 2.5˜30% by weight. The release film is produced by applying the release liquid on a substrate, followed by drying.

Abstract: The present invention relates generally to novel systems and methods for polymerizing nanoparticles within a polymer matrix and to novel methods for fabricating materials containing nanoparticles in a polymer matrix.

Abstract: When an air bag is prepared by laying a pair of silicone rubber-impregnated and/or coated base fabric pieces one on the other, with the coated surfaces of the pieces inside, and joining peripheral portions of the pieces together to form a bag, an addition curable silicone rubber composition which is loaded with aluminum hydroxide powder and cures into a silicone rubber having an elongation at break of at least 1000% is used as a sealer and applied to the peripheral portions of the base fabric pieces, thereby achieving improved adhesion therebetween.

Abstract: A coating composition and a pigment comprising a surface-treated clay mixture used therein, and, optionally, microspheres, in which the coating composition comprises a curable or hardenable resin system into which is dispersed the pigment. High build, corrosion resistant coating compositions are provided having high pigment content, which translates into lower material costs, attributable at least in part to the particle packing benefits derived from the unique clay mixture used as a filler.

Abstract: Functionalized silicas with 3-methacryloxypropylsilyl and/or glycidyloxypropylsilyl groups on the surface are prepared by mixing the silicas with the silane and heat-treating the mixture. The silicas are employed, for example, in solvent-containing coatings.

Abstract: A composition comprises the product obtained by homogeneously blending: (A) 100 parts by weight of a polyorganosiloxane containing at least two alkenyl radicals per molecule, (B) an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule in a quantity sufficient to provide from 0.5 to 3 silicon-bonded hydrogen atoms per alkenyl radical of (A), (C) from 50-2000 parts by weight of silver particles pre-treated with an organosilicon compound selected from the group consisting of (i) alkoxy group(s)-containing silanes and (ii) organosiloxanes, (D) a platinum catalyst, (E) up to 20 weight percent based on the weight of (A) of an organosilicon compound containing at least one silicon-bonded alkoxy group per molecule, and (F) from 0.001 to 5 parts by weight per 100 parts by weight of (A) of a cure inhibitor.

Abstract: A silicone rubber composition for use in rubber construction materials contains dispersed particles having a photocatalytic activity. The particles are surface-treated with a compound that can easily be deteriorated by the photocatalytic activity under outdoor exposure to ultraviolet light. Rubber construction materials made of the cured form of the composition, when exposed to ultraviolet light, undergo surface hydrophilization that endows them with excellent stain resistance, and also have excellent sealing properties. When the composition is applied as a coating, filled into joints, or used as a solid gasket, it does not cause staining of the building, joints, or the area around joints.

Abstract: A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base.

Abstract: A condensation curable silicone rubber composition is provided which is able to suppress increases in viscosity over time, has an adequate pot life and excellent mold releasability, and displays favorable urethane molding durability. The composition includes: (A) an organopolysiloxane represented by a general formula (I), wherein, each R1 represents, independently, a substituted or unsubstituted monovalent hydrocarbon group, and n represents a number which results in a viscosity at 25° C. of 100 to 500,000 mm2/s, with a viscosity at 25° C. of 100 to 500,000 mm2/s; (B) a surface-treated reinforcing fine silica powder with a specific surface area as measured by a BET method of at least 50 m2/g, and a tap density of 0.2 to 0.4 g/ml, which has undergone treatment with an organosilicon compound to produce a quantity of surface carbon of at least 2.5% by weight; and (C) a tin compound-based curing catalyst.

Abstract: The invention relates to a flameproof, essentially halogen-free polymer composition, containing the following: a) 100 parts by weight of a thermoplastic, cross-linkable or cross-linked, elastomeric and/or duroplastic polymer; b) 10 to 200 parts by weight of magnesium, calcium, zink and/or aluminiumhydroxide and/or their double hydroxides; c) 1 to 50 parts by weight of an organic intercalated sheet silicate.

Abstract: A filled silicone composition comprising (A) a curable silicone composition and (B) 5 to 60% (w/w) of a hydrophobic partially aggregated colloidal silica; and a cured silicone product comprising a reaction product of the filled silicone composition.

Abstract: The invention is an insulation material which comprises a silicon based matrix and a plurality of non-metallic beads supported in the matrix. In one embodiment of the invention, the matrix comprises a platinum cured, addition cured silicon material and the beads comprise a mean diameter of less than about 60 microns and an isostatic strength of at least about 10,000 psi. The insulation material may be used in conjunction with subsea oil and gas production equipment, such as pipelines, wellheads and christmas trees.

Abstract: Anionic electrodeposition coating compositions for forming matte films containing acrylic resin; alkoxysilyl group containing emulsified polymer produced by a multiple stage emulsion polymerization of unsaturated monomer in the presence of water and a emulsifier, wherein the unsaturated monomer containing alkoxysilyl group-containing unsaturated monomer is present in an amount of 5 to 40% by weight based on a total amount of all the unsaturated monomers used in the multiple stage emulsion polymerization; and crosslinking agent.

Abstract: To provide a fluorine-containing resin powder coating composition giving a fluorine containing resin coating film having a high whiteness, and various articles having on an outer surface thereof a coating of which has a high whiteness and can be produced by applying the fluorine-containing resin powder coating composition. The fluorine-containing resin powder coating composition is subjected To baking at 300° C. or more, and the fluorine-containing resin composition for forming the coating film comprises surface-treated rutile titanium oxide particles as a whitening agent.

Abstract: A stable modified metal oxide sol which contains from 2 to 50 wt %, as calculated as metal oxides, of particles (c) comprising colloidal particles (a) of a metal oxide having primary particle diameters of from 2 to 60 nm, as nuclei, and a coating material (b) consisting of colloidal particles of an acidic oxide coated on the surface of the particles (a), and which has primary particle diameters of from 2 to 100 nm.

Abstract: Thermoplastic molding compositions comprising, as substantive constituents A) from 5 to 95% by weight of a vinylaromatic polymer having a syndiotactic structure, B) from 2 to 50% by weight of an inorganic filler, C) from 1 to 45% by weight of an elastomeric, particulate graft polymer, D) from 1 to 10% by weight of a compatibilizer, and, where appropriate, E) from 1 to 45% by weight of an elastomeric particulate styrene-diene block copolymer whose diene fraction may have been completely or to some extent hydrogenated, and, where appropriate, F) from 1 to 35% by weight of a thermoplastic elastomer based on copolymers made from vinylaromatic monomers, dienes, and, where appropriate, 1,1-diphenylethylene, and, where appropriate, G) additives, where the total of the percentages by weight of A) to G) is 100.

Abstract: The invention is a polymer resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The polymer resin is capable of being formed into low-haze, high-clarity bottles and films possessing reduced coefficient of friction.

Abstract: A curable composition comprising (A) an organopolysiloxane having functional groups capable of condensation reaction at both molecular terminals thereof and (B-1) a hydrophobic silica and a hydrophilic silica. A curable composition comprising (A) an organopolysiloxane having functional groups capable of condensation reaction at both molecular terminals thereof and (B-2) a hydrophobic silica, wherein the hydrophobic silica (B-2) is thermally treated together with the organopolysiloxane (A).

Abstract: The invention provides a matt, thixotropic paint formulation comprising a resin system and a matting agent. The matting agent comprises a hydrophobic metal oxide, which has a surface moiety (i.e., one or more surface moieties) selected from the group consisting of trimethyl silyl, vinyl dimethyl silyl, acryl dimethyl silyl, and dimethyl silyl. Morever, the paint formulation is characterized by having thixotropic properties such that it does not sag at a notch height of about 75 &mgr;m when measured with an anti-sag meter after application to a substrate. The invention also provides a method of producing such a paint formulation. The invention further provides a substrate having a surface coated with the matt, thixotropic paint formulation of the invention.