Abstract: An organopolysiloxane having triazinethiol and alkenyl radicals in a molecule and a primer composition comprising the same are provided. The primer composition assists in establishing a high bond strength between metal and silicone rubber by the mechanism that the triazinethiol moieties form strong chemical bonds with a difficult-to-bond metal such as gold, silver or copper, and the alkenyl moieties are involved in silicone rubber vulcanization.

Abstract: A silicone coating composition comprising (A) a silicone resin resulting from (co)hydrolytic condensation of an alkoxysilane or a partial hydrolytic condensate thereof, (B) an aromatic-free compound for curing the silicone resin, and (C) a solvent remains stable during shelf storage. It is applied and heat cured to a plastic substrate to form a protective coat having a high hardness, mar resistance, adhesion, toughness and crack resistance.

Abstract: An alkali metal or alkaline earth metal salt of sulfonic acid of polyphenylene ether oligomer is useful as a modifier for thermoplastic resins, typically as a flame retardant, compatibilizing agent or antistatic agent.

Abstract: An additive for imparting flame retardancy with an organic resin is provided. This additive does not use environmentally harmful halogen or phosphorus flame retardant which also adversely affects the performance of the product, and this additive satisfies severe flame retardancy requirements at the level equivalent to those employing such flame retardants. Also provided are a flame retardant polycarbonate resin composition adapted for use in producing a product having excellent mechanical properties, moldability, and outer appearance as well as an article molded therefrom. The additive for imparting flame retardancy with an organic resin comprises a silicone compound having phenyl group bonded to silicon atom, an alkali metal sulfonate salt group or an alkaline earth metal sulfonate salt group bonded to silicon atom via a hydrocarbon group (optionally containing a hetero atom), and siloxane bond.

Abstract: A method of producing an organosilylamine containing a radiation-polymerizable functional group that is useful as a surface treatment agent is provided. The method includes reacting an organosilylamine containing a haloalkyl group, and at least one salt having a radiation-polymerizable functional group selected from the group consisting of alkali metal salts of organic acids having a radiation-polymerizable functional group and alkaline earth metal salts of organic acids having a radiation-polymerizable functional group, at a temperature within a range from 50 to 150° C. An organosilylamine containing a radiation-polymerizable functional group composed of a specific silazane unit is also provided.

Abstract: Silicone coating compositions comprising a silicone resin which is obtained by cohydrolytic condensation of (A) an organosilicon compound, and (B) an alkoxysilane and/or (C) a fluorine-containing organosilicon compound form mar resistant surface-protecting films having a hardness, flexibility, crack resistance and weather resistance.

Abstract: A primer composition comprising (A) a vinyl polymer having hydrolyzable silyl groups and/or SiOH groups and organic UV-absorbing groups and (B) an organopolysiloxane cures into a primer layer having a coefficient of linear expansion equal to or less than 150×10?6/° C., which allows a polysiloxane hard coat to be applied thereon.

Abstract: A chromate-free metal surface treating agent which is well adapted for use with a metal-coated steel material is provided. This agent provides excellent workability, adhesion, and corrosion resistance when used as a pretreatment before providing an overcoat, for example, by applying a coating composition. A steel material which has been treated with such surface treating agent, and a method for treating a metal surface with such surface treating agent, as well as a coated steel material having an overcoat formed on the surface treated steel material, and its production method are also provided.

Abstract: A coating composition is based on a water-soluble silicon-containing polymer containing a silyl group capable of reaction with an inorganic material to form a chemical bond and a plurality of amino groups capable of reaction with an organic resin to form chemical bonds. This coating composition has a water solubility and adhesion to inorganic materials and organic resins, and serves as a primer or modifier for improving many properties including mechanical strength, water and boiling water resistance and weatherability.

Abstract: A water-soluble silicon-containing polymer is provided comprising recurring units having formula (1) wherein 10?m?260, 1?n?100, X is an alkylene chain which may have an alkyl substituent, R is H, alkyl or acetyl, and “a”=1, 2 or 3. The polymer has more than one primary amino group per hydrolyzable silyl group, affording an increased number of reaction sites with organic resins and forming a firm bond therewith.

Abstract: An emulsion coating agent composition containing: (A) one hundred parts by weight of an organosilicone resin obtained by hydrolysis and/or condensation of a mixture of a silicone oil having both reactive terminals represented by X—[R2Si—O—]m—R2Si—X (R is selected from monovalent hydrocarbon groups containing one to twenty carbon atoms and/or aryl groups, and each R is same or different groups, X is a hydrolyzable group and/or an OH group, and m is a natural number from three to one hundred), a silane and/or a silicone in which the organosilicone resin containing a continuous linear chain structure indicated by —[R2Si—O—]m+1— (R and m are both identical to the R and m in the formula showing the silicone oil with both reactive terminals), and 5 mole % to 60 mole % of the total Si atoms in the organosilicone resin form the chain-like continuous structure; (B) one part by weight to fifty parts by weight of an emulsifier; and (C) twenty-five parts by weight to two thousand parts by weight of water.

Abstract: An additive for imparting flame retardancy with an organic resin is provided. This additive does not use environmentally harmful halogen or phosphorus flame retardant which also adversely affects the performance of the product, and this additive satisfies severe flame retardancy requirements at the level equivalent to those employing such flame retardants. Also provided are a flame retardant polycarbonate resin composition adapted for use in producing a product having excellent mechanical properties, moldability, and outer appearance as well as an article molded therefrom. The additive for imparting flame retardancy with an organic resin comprises a silicone compound having phenyl group bonded to silicon atom, an alkali metal sulfonate salt group or an alkaline earth metal sulfonate salt group bonded to silicon atom via a hydrocarbon group (optionally containing a hetero atom), and siloxane bond.

Abstract: A perfluoropolyether rubber composition is useful for forming a polymer electrolyte membrane, comprising (A) an alkenyl-containing perfluoropolyether, (B) a silicon-oxygen crosslinked structure having ionic conduction, and (C) a peroxide crosslinker. The silicon-oxygen crosslinked structure is obtained by simultaneously effecting oxidation and hydrolysis on an organoxysilane having an epoxy group and an organoxysilane having a mercapto group for thereby converting the mercapto group into a sulfonic group, and neutralizing the resulting sulfonic group-containing siloxane with a nitrogen-containing compound.

Abstract: A primer composition for a polysiloxane hard coating is provided. This primer composition comprises (A) a vinyl polymer having a hydrolyzable silyl group and/or SiOH group and an organic UV absorbing group bonded to its side chain, and (B) fine silica particles dispersed in an organic solvent, and the primer layer formed after coating and curing has a coefficient of linear expansion of up to 150×10?6/° C.

Abstract: A photocurable and thermosetting coating composition which is solventless and liquid at room temperature is provided. This coating composition provides scratch resistance, crack resistance, smudge resistance, and removability of oil-base felted markers by wiping with the underlying substrate, and this coating composition contains a silicone resin represented by: (R1R2R3SiO1/2)a(R4R5SiO2/2)b(R6SiO3/2)c(SiO4/2)d(O1/2X)e ??(1) wherein X is hydrogen atom or an alkyl group; R1 to R6 are respectively at least one monovalent organic group which is a monovalent aliphatic hydrocarbon group or a monovalent aromatic hydrocarbon group optionally substituted with a substituent such as a poly(hexafluoropropylene oxide) structure-containing group; a, b, d, and e are 0 or a positive number; c is a positive number; and a+b+c+d is 1. The silicone resin contains at least one group represented by: CH2?C(R7)COOCH2— ??(2) wherein R7 is hydrogen atom or methyl group.

Abstract: An antifouling coating composition is provided comprising an organosilicon compound having a one end-blocked diorganopolysiloxane group and a condensation-curable silyl group in a common molecule, and optionally a heat-curable compound. The composition is applied and cured to a substrate to form a coat which has an improved surface protective function and durable water repellent and antifouling properties.

Abstract: A thermosetting resin composition which forms a cured coating is provided. This resin composition is capable of providing the supporting substrate with scratch resistance, crack resistance, smudge proof property, removability of oil-base felted markers by wiping, and antistatic property. Also provided is an article having a coating formed from such composition.

Abstract: A composite resin which has been produced by hydrolyzing and condensing a silane compound (2) containing a bissilane compound (B) represented by: XnR3-nSi—Y—SiR3-nXn ??(B) wherein Y is a divalent organic group which is optionally substituted with a fluorine atom or a divalent organic group which optionally contains an aromatic ring, R is a monovalent organic group, X is OH group or a hydrolyzable group, and n is 1, 2, or 3; in the presence of (1) porous and/or hollow inorganic oxide fine particles (A); and which is an integral mixture of component (1) and component (2) which has undergone the hydrolysis and the condensation. The composite resin of the present invention has voids in the resin since it contains porous and/or hollow inorganic oxide fine particles, and the composite resin of the present invention can also be formed into a cured article or a cured coating with reduced refractive index since it contains air which has the lowest refractive index.

Abstract: A photoreactive group-containing siloxane compound is obtained by subjecting a system comprising (a) a photoreactive group-containing alkoxysilane and (b) a hydrolyzable group end-capped dimethylsiloxane to hydrolytic condensation in the presence of a basic catalyst and with an amount of water greater than the amount necessary for hydrolytic condensation of all alkoxy groups. It forms on a substrate a coating having mar resistance, crack resistance, anti-staining effect, and marker ink wipe-off ability.

Abstract: An anti-smudge agent which is added to a coating composition for imparting smudge proof property with the coating composition, comprising a silicone resin containing a fluorine atom-containing organic group, which has a number average molecular weight of at least 1,000 and a molar ratio of the fluorine atom to the silicon atom (F/Si) of 3 to 50, said silicone resin being the one produced by hydrolyzing or condensing an organosilicon compound having a fluorine atom-containing organic group represented by the following general formula (I): R1R2mSiX3-m ??(I) wherein R1 is a fluorine atom-containing organic substituent, R2 is a substituted or unsubstituted alkyl group or phenyl group containing 1 to 10 carbon atoms, X is a hydrolyzable group or OH group, and m is 0 or 1; or a hydrolysate or a partial condensate thereof.