Abstract: Provided are: a crosslinked organopolysiloxane which has properties intermediate between a dimethylpolysiloxane oil and a gel-like crosslinked siloxane; and a method for producing the crosslinked organopolysiloxane. An oil-like organopolysiloxane which is produced by: adding a compound having a siloxane unit represented by formula (3) to a gel-like silicone, wherein the gel-like silicone is produced by a hydrosilylation reaction of an organopolysiloxane having an alkenyl group with an organohydrogenpolysiloxane having a hydrogen atom bonded to a silicon atom in the presence of a platinum-group metal catalyst; and then equilibrating the resultant product with an acid or alkali catalyst. R12SiO2/2??(3) (R1 represents a group selected from a monovalent hydrocarbon group having no aliphatic unsaturated bond and an alkenyl group represented by the formula: —(CH2)a—CH?CH2 (wherein a represents a numerical value of 0 to 6), and the average polymerization degree of formula (3) is 3 to 2,000.

Abstract: An organopolysiloxane composition obtained by dissolving in a solvent an organopolysiloxane crosslinked product obtained by repeating one or more times a process of again introducing an organopolysiloxane and an organohydrogenpolysiloxane to a product, obtained by conducting an addition reaction of an organopolysiloxane of a specific structure and an organohydrogenpolysiloxane of a specific structure using a platinum group metal-based compound in 10-50 times the total mass of these polysiloxanes, and conducting an addition reaction using a platinum group metal-based compound.

Abstract: Provided are a siloxane composition, said siloxane composition showing physical properties between a dimethyl polysiloxane oil and a gelatinous crosslinked siloxane and being fluid or becoming fluid when dissolved in a solvent, and a method for producing the same. The siloxane composition, which is obtained by subjecting specific starting organopolysiloxane materials to an addition reaction in a large excess (i.e., 8 times by mass or greater as much as the starting materials) of a solvent, comprises a crosslinked organopolysiloxane, said crosslinked organopolysiloxane having a weight-average molecular weight of 5,000-300,000,000 and containing 0.1-50 mol of silethylene bond per 1,000 mol of siloxane unit, dissolved in the solvent.

Abstract: Provided is a light release additive for release sheets, the additive being capable of achieving a desired light release force with a small addition thereof to an organopolysiloxane composition for release sheets and of providing an excellent release coating such that the released adhesive sheet has a high subsequent adhesion. This light release additive for release sheets comprises an acryl-silicone-based graft copolymer with a weight-average molecular weight of 1,000 to 100,000 obtained by radical polymerization of (A) an organopolysiloxane compound having an acrylic group and/or a methacrylic group and (B) a radical polymerizable monomer having one radical polymerizable group per molecule.

Abstract: The present invention relates to an emulsion-based high release additive for a release sheet, the additive being characterized by being obtained by dispersing in water a condensation product (A) obtained by subjecting the following to a dehydration condensation reaction: (A-1) a polydiorganosiloxane which has an average degree of polymerization of 100-300,000 and which has one or more hydroxyl groups or hydrolyzable groups per molecule; and (A-2) a polyorganosiloxane resin, which contains (SiO4/2) units and (R3SiO1/2) units (in the formulae, the R groups each represent independently a monovalent hydrocarbon group having 1-12 carbon atoms and not having an aliphatic unsaturated bond or an alkenyl group having 2-6 carbon atoms) as primary components, in which the molar ratio of (R3SiO1/2) units relative to (SiO4/2) units is 0.6-1.2 and in which the total content of hydroxyl groups and hydrolyzable groups is not lower than 2.1 mass % and lower than 10.0 mass %.

Abstract: Provided are: a crosslinked organopolysiloxane which has properties intermediate between a dimethylpolysiloxane oil and a gel-like crosslinked siloxane; and a method for producing the crosslinked organopolysiloxane. An oil-like organopolysiloxane which is produced by: adding a compound having a siloxane unit represented by formula (3) to a gel-like silicone, wherein the gel-like silicone is produced by a hydrosilylation reaction of an organopolysiloxane having an alkenyl group with an organohydrogenpolysiloxane having a hydrogen atom bonded to a silicon atom in the presence of a platinum-group metal catalyst; and then equilibrating the resultant product with an acid or alkali catalyst. R12SiO2/2 ??(3) (R1 represents a group selected from a monovalent hydrocarbon group having no aliphatic unsaturated bond and an alkenyl group represented by the formula: —(CH2)a—CH?CH2 (wherein a represents a numerical value of 0 to 6), and the average polymerization degree of formula (3) is 3 to 2,000.

Abstract: A heavy release additive for a release sheet comprises a condensation reaction product of dehydrative condensation reaction between (A) a polydiorganosiloxane of average polymerization degree of 500 to 10,000 and has at least one hydroxy or hydrolysable group per molecule and (B) a polyorganosiloxane resin composed of a (SiO4/2) unit and a (R3SiO1/2) unit (wherein R's independently represent a C1-12 monovalent hydrocarbon group or a C2-6 alkenyl group each having no aliphatic unsaturated bond), has a ratio of the (R3SiO1/2) unit to the (SiO4/2) unit of 0.6 to 1.2 by mole, and contains the hydroxy group and the hydrolysable group in the total content of 2.1 mass % or more and less than 10.0 mass %. The heavy release additive can have the effect of achieving an extremely great peel force compared with cases in which no additive is added.

Abstract: A heavy release additive for a release sheet comprises a condensation reaction product of dehydrative condensation reaction between (A) a polydiorganosiloxane of average polymerization degree of 500 to 10,000 and has at least one hydroxy or hydrolysable group per molecule and (B) a polyorganosiloxane resin composed of a (SiO4/2) unit and a (R3SiO1/2) unit (wherein R's independently represent a C1-12 monovalent hydrocarbon group or a C2-6 alkenyl group each having no aliphatic unsaturated bond), has a ratio of the (R3SiO1/2) unit to the (SiO4/2) unit of 0.6 to 1.2 by mole, and contains the hydroxy group and the hydrolysable group in the total content of 2.1 mass % or more and less than 10.0 mass %. The heavy release additive can have the effect of achieving an extremely great peel force compared with cases in which no additive is added.

Abstract: The present invention relates to an emulsion-based high release additive for a release sheet, the additive being characterized by being obtained by dispersing in water a condensation product (A) obtained by subjecting the following to a dehydration condensation reaction: (A-1) a polydiorganosiloxane which has an average degree of polymerization of 100-300,000 and which has one or more hydroxyl groups or hydrolyzable groups per molecule; and (A-2) a polyorganosiloxane resin, which contains (SiO4/2) units and (R3SiO1/2) units (in the formulae, the R groups each represent independently a monovalent hydrocarbon group having 1-12 carbon atoms and not having an aliphatic unsaturated bond or an alkenyl group having 2-6 carbon atoms) as primary components, in which the molar ratio of (R3SiO1/2) units relative to (SiO4/2) units is 0.6-1.2 and in which the total content of hydroxyl groups and hydrolyzable groups is not lower than 2.1 mass % and lower than 10.0 mass %.

Abstract: A polyurethane resin composition comprising (A) a polycarbonate base polyurethane resin, (B) a P and N-containing non-halogen flame retardant, (C) a polyhydric alcohol, and (D) a silicone containing at least two reactive functional groups in the molecule obviates the problems of safety, environment and price and has sufficient flame retardance and improved mechanical properties such as tensile strength and elongation.

Abstract: A fishing line is produced by forming a monofilament by subjecting a resin composition (C) containing 90 to 99.3% by weight of a polyamide resin (A) and 0.7 to 10% by weight of a silicone compound (B) having a number average molecular weight of 100,000 to 2,000,000 to melt-spinning and then drawing. This method can provide a fishing line which is excellent in abrasion resistance and also excellent in visibility. In this method, it is preferable to conduct melt-kneading of a part of the polyamide resin (A) with the silicone compound (B) in advance, adding of the residual polyamide resin (A) and further melt-kneading, subsequent melt-spinning, and drawing at a draw ratio of from 4 to 7.

Abstract: A method for preparing a vehicle interior material comprises the steps of feeding 100 parts by weight of phosphorus and nitrogen-containing non-halogen flame retardant particles and 0.1 to 20 parts by weight of hydrophobic inorganic oxide fine particles having hydrophobic groups and having an average particle size of 0.

Abstract: A polyurethane resin composition comprising (A) a polycarbonate base polyurethane resin, (B) a P and N-containing non-halogen flame retardant, (C) a polyhydric alcohol, and (D) a silicone containing at least two reactive functional groups in the molecule obviates the problems of safety, environment and price and has sufficient flame retardance and improved mechanical properties such as tensile strength and elongation.

Abstract: A method for preparing a vehicle interior material comprises the steps of feeding 100 parts by weight of phosphorus and nitrogen-containing non-halogen flame retardant particles and 0.1 to 20 parts by weight of hydrophobic inorganic oxide fine particles having hydrophobic groups and having an average particle size of 0.

Abstract: Provided by the invention is a non-halogen flame-retardant thermoplastic resin composition not requiring crosslinking with a peroxide, having excellent in moldability, and moreover, having high flame-retardancy to pass the test for V-0 grade of the UL-94. standards The non-halogen flame-retardant thermoplastic resin composition comprises, as a uniform blend: (A) 100 parts by mass of a thermoplastic resin other than polycarbonate and polyphenylene ether resins, (B) 10 to 300 parts by mass of an inorganic powder, (C) 1 to 50 parts by mass of an organopolysiloxane having a specified structure, and (D) 0.01 to 10 parts by mass of an organic compound having a specified structure.

Abstract: A flame retardant additive comprises (A) a gassing agent which is a compound containing both phosphorus and nitrogen, typically ammonium polyphosphate, which is surface coated with (B) a silicone-base water repellent treating agent comprising a co-hydrolytic condensate obtained through co-hydrolytic condensation of (i) an organosilicon compound and (ii) an amino group-containing alkoxysilane or a partial hydrolyzate thereof in the presence of an organic or inorganic acid. The additive is improved in moisture absorption resistance and dispersion and suited for use in resins or elastomers.

Abstract: A fishing line is produced by forming a monofilament by subjecting a resin composition (C) containing 90 to 99.3% by weight of a polyamide resin (A) and 0.7 to 10% by weight of a silicone compound (B) having a number average molecular weight of 100,000 to 2,000,000 to melt-spinning and then drawing. This method can provide a fishing line which is excellent in abrasion resistance and also excellent in visibility. In this method, it is preferable to conduct melt-kneading of a part of the polyamide resin (A) with the silicone compound (B) in advance, adding of the residual polyamide resin (A) and further melt-kneading, subsequent melt-spinning, and drawing at a draw ratio of from 4 to 7.

Abstract: The invention discloses a flame-retardant thermoplastic resin composition without containing any halogen compounds as a flame-retardant agent but still exhibiting excellent flame retardancy. The resin composition comprises: (a) a thermoplastic resin kneadable or moldable at a temperature lower than 250° C. such as polyethylene; (b) magnesium hydroxide as the principal flame retardant agent; (c) an organopolysiloxane compound of a specified viscosity; and (d) a reactive catalytic compound which is a radical-generating compound having an incipient thermal decomposition temperature higher than 250° C. such as 2,3-dimethyl-2,3-diphenylbutane. Alternatively, the catalytic compound as the component (d) can be a combination of a noble metal, e.g., platinum, compound and a vinyl group-containing organosiloxane compound.

Abstract: The invention provides a flame-retardant thermoplastic resin composition compounded with a flame-retardant powder which, in addition to the excellent dispersibility in resins and excellent flame retardancy imparted to the resin, can reduce the amount of low molecular weight siloxanes emitted from the resin to 10 ppm or smaller, along with a flame-retardant resin composition by compounding with this flame-retardant powder. This flame-retardant powder is prepared by treating the surface of an inorganic flame-retardant powder under pressurization with an organopolysiloxane represented by the average structural formula given below and having a mass-average molecular weight of 100,000 to 3,500,000, wherein said organopolysiloxane contains not more than 2,000 ppm of low molecular weight siloxanes having from 2 to 10 silicon atoms per molecule, as determined by extraction with acetone and wherein the amount of said organopolysiloxane is 0.

Abstract: A coating composition comprising 100 pbw as solids of a synthetic resin emulsion and 1-300 pbw of a non-halogen flame retardant in which P and N-containing non-halogen flame retardant particles are surface coated with hydrophobic inorganic oxide fine particles is applicable to vehicle interior materials.