Abstract: A viscous liquid vibration damping composition containing (A) 30-95 weight percent of a viscous liquid, and (B) 5-70 weight percent of at least two solid powders having different average particle diameters, where the difference between the respective average particle diameters of the two solid powders is at least 10 &mgr;m. These viscous liquid vibration damping compositions are superior in vibration damping properties, and possess a stable vibration damping characteristic that is not significantly affected by temperature changes.

Abstract: A viscous liquid vibration damping composition containing (A) 30-95 weight percent of a viscous liquid, and (B) 5-70 weight percent of at least two solid powders having different average particle diameters, where the difference between the respective average particle diameters of the two solid powders is at least 10 &mgr;m. These viscous liquid vibration damping compositions are superior in vibration damping properties, and possess a stable vibration damping characteristic that is not significantly affected by temperature changes.

Abstract: A water repellent for application to glass, comprising disilazane with the general formula in which n and n′ are the same or different integers having values from 2 to 20, and water-repellent glass whose surface has been treated with said water repellent.

Abstract: A curable silicone resin composition contains (A) 100 parts by weight of a silicone resin having condensation-reactive group, (B) 1 to 100 parts by weight of an inorganic fine powder, (C) 0.5 to 50 parts by weight of a silazane compound; and (D) an arbitrary amount of an organic solvent. The curable silicone resin composition cures to form a cured coating film with excellent water-repellent properties.

Abstract: Resin composition for powder paints, that has an excellent curability and excellent electrostatic properties (wraparound) and that provides cured coatings having an excellent appearance, weathering resistance, and mechanical properties, comprising (A) epoxy-functional branched organopolysiloxane and (B) a compound bearing a functional group reactive with the epoxy group, wherein the component (A)/component (B) weight ratio is from 2/98 to 98/2, or comprising (A) epoxy-functional branched organopolysiloxane, (3) a compound bearing a functional group reactive with the epoxy group, and (C) a compound bearing a functional group reactive with the functional group in component (B), wherein the component (A)/(component (B)+component (C)) weight ratio is from 2/98 to 98/2.

Abstract: An organopolysiloxane composition for viscous fluid couplings permits little torque variation even when used at a high temperature for an extended period of time. The organopolysiloxane composition comprises an organopolysiloxane liquid with a viscosity of 100 to 1,000,000 sq. mm/s and a platinum compound in an amount such that the amount of platinum metal relative to the liquid is 0.1 to 1,000 ppm. The organopolysiloxane liquid is typically a trimethylsiloxy-endblocked polydimethylsiloxane.

Abstract: Organosiloxane compositions exhibiting excellent vibration damping properties comprise(A) from 70 to 99.9 weight percent of a liquid polyorganosiloxane,(B) from 0.1 to 10 weight percent of hollow particles of a thermoplastic organic resin, and(C) from 0 to 20 weight percent of a thickener.

Abstract: There is disclosed a water-repellent powder which is prepared by (A) coating the surface of a deliquescent powder with a curable silicone-based formation agent; and (B) curing said formation agent to provide a silicone-based cured film on said powder. Preferably, the deliquescent powder is selected from the group consisting of ammonium acetate, potassium acetate and sodium acetate.

Abstract: A water repellent for application to glass, comprising disilazane with the general formula ##STR1## in which n and n' are the same or different integers having values from 2 to 20, and water-repellent glass whose surface has been treated with said water repellent.

Abstract: There is disclosed a heat resistant organopolysiloxane composition comprising:(A) 100 parts by weight of an organopolysiloxane having a viscosity of 100 to 1,000,000 centistokes at 25.degree. C.;(B) 0.001 to 10 parts by weight of a reaction product of an alkali metal silanolate compound with cerium chloride or a cerium carboxylate; and(C) a diorganopolysiloxane having silicon-bonded hydrogen groups only at its molecular chain terminals, component (C) being present in a quantity sufficient to provide 1 to 10,000 parts per million of silicon-bonded hydrogen based on the total weight of said composition.

Abstract: Organosiloxane compositions exhibiting excellent vibration damping properties comprise(A) from 70 to 99.9 weight percent of a liquid polyorganosiloxane,(B) from 0.1 to 10 weight percent of hollow particles of a thermoplastic organic resin, and(C) from 0 to 20 weight percent of a thickener.

Abstract: There is disclosed a heat-resistant agent which exhibits good solubility in various organopolysiloxanes and which confers superior heat-resistance thereto, said heat-resistant agent having the formula ##STR1## wherein R.sup.2 is independently selected from hydrocarbon or halogenated hydrocarbon groups having 1 to 10 carbon atoms, R.sup.1 is independently selected from R.sup.2 or a eugenol residue, m is an integer having an average value of 5 to 500 and n is an integer having an average value of 0 to 500, with the proviso that there is at least one eugenol residue in the molecule. Also disclosed is a composition comprising an organopolysiloxane and the above described heat-resistant agent.

Abstract: The present invention provides silicone resin-coated carrier particles used in two-component dry-process developers for electrophotographic processes. The present invention also provides a method for preparing carrier particles using a mixture of two silicone resin compositions.

Abstract: Toner compositions for electrostatic copiers containing siloxane resins with difunctional and trifunctional siloxane units as charge regulating agents are releasable, and have very stable charging properties with respect to temperature and humidity. When the siloxane units of the resin contain aminofunctional hydrocarbon radicals, haloalkyl radicals, or residues derived from organophosphorus esters, the presence of prior art charge regulators is not required.

Abstract: An optical matching oil that is immune to timewise variations in its refractive index, that undergoes little increase in viscosity below room temperature, and that also resists crystallization below room temperature. The optical matching oil is based on an organosilicon compound with the following general formula ##STR1## wherein R is selected from the group consisting of methyl, vinyl, and 2-methylphenethyl with the proviso that at least one R group is the 2-methylphenethyl group.

Abstract: An organocyclosiloxane having utility as a coupling agent is disclosed, said organocyclosiloxane having the general formula ##STR1## wherein R.sup.1 is independently selected from monovalent hydrocarbon groups having 1 to 8 carbons, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl, methacryloxyalkyl, N-(trialkylsilyl)aminoalkyl, (hydroxyphenyl)alkyl and haloalkyl, x is 1 to 6 and y is 1 to 6, with the proviso that x+y is an integer having a value of 3 to 8.

Abstract: An organocyclosiloxane having utility as a coupling agent is disclosed said organocyclosiloxane having the general formula ##STR1## wherein R.sup.1 is independently selected from monovalent hydrocarbon groups having 1 to 8 carbons, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl, methacryloxyalkyl, N-(trialkylsilyl)aminoalkyl (hydroxyphenyl)alkyl and haloalkyl x is 1 to 6 and y is 1 to 6, with the proviso that x+y is an integer having a value of 3 to 8.

Abstract: A two-step process for the preparation of a silicone resin-modified phenolic resin is disclosed wherein an alkoxysilane-modified phenolic resin is first prepared by reacting an alkoxysilane with a phenolic resin. In a subsequent step, the alkoxysilane-modified phenolic resin is hydrolyzed and condensed by heating and stirring it with water. The resulting silicone resin-modified phenolic resin, which is free of diorganopolysiloxane units, has excellent heat resistance and excellent electrical insulating properties.