Abstract: Hollow silicone fine particles have high productivity, low breakability, a narrow particle size distribution and a volume average particle diameter equal to or lower than 1 ?m. The hollow particles are made by removing organic macromolecular particles and/or an organic solvent away form inside core-shell particles produced by coating particles made from the organic macromolecular particles and/or the organic solvent with silicone compound that is made from one or more units selected from the group consisting of SiO4/2 unit, RSiO3/2 unit, and R2SiO2/2 unit (wherein R is C1-4 alkyl groups, C6-24 aromatic groups, a vinyl group, a ?-(meth)acryloxypropyl group or organic groups having an SH group(s)), the silicone compound containing R2SiO2/2 unit by 20 mole % or less.

Abstract: The present invention provides silicone polymer particles having excellent tensile properties and excellent transparency and also provides a silicone composition. The present invention relates to silicone polymer particles having a silicone core-alkoxysilane condensate shell structure in which silicone particles with a volume-average particle diameter of 0.001 ?m to 1.0 ?m are coated with an alkoxysilane condensate, and also relates to a silicone composition containing (A) the silicone polymer particles, (B) a polyorganosiloxane having at least one alkenyl group in its molecule, and (C) a curing agent. The present invention further relates to respective manufacturing methods of the silicone polymer particles and the silicone composition.

Abstract: The present invention relates to a flame retardant which is a graft copolymer. The graft copolymer is obtained by polymerizing a vinyl monomer containing at least two polymerizable groups, and at least one other vinyl monomer, in the presence of polyorganosiloxane particles in a latex state. The polyorganosiloxane particles contain grafting agents that are unevenly distributed on the surface thereof. The present invention also relates to thermoplastic resins containing this flame retardant.

Abstract: The present invention provides a thermoplastic resin composition that excels in the slidability and mold release ability at molding of thermoplastic resin by virtue of mixing of a small amount of a polyorganosiloxane-containing graft copolymer excellent in powder characteristics. The present invention can solve the above-mentioned problem by providing thermoplastic resin composition comprising 0.01 to 5% by weight of a polyorganosiloxane-containing graft copolymer (C) and 99.

Abstract: A rubber-modified styrene resin composition having excellent impact resistance, high tensile strength, and good moldability is provided. The present invention is accomplished by a rubber-modified styrene resin composition containing 99.9 to 97 percent by weight of a rubber-modified styrene resin (E) and 0.1 to 3 percent by weight of a polyorganosiloxane-containing graft copolymer (D), the polyorganosiloxane-containing graft copolymer (D) being a specific copolymer prepared with a polyorganosiloxane (A) produced by polymerizing 99.9 to 99.6 percent by weight of a organosiloxane with 0.1 to 0.4 percent by weight of a graft-linking agent.

Abstract: The present invention provides a polyorganosiloxane-containing graft copolymer which is obtainable by polymerizing 0.

Abstract: An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer capable of further improving impact resistance of a vinyl chloride-based resin without causing a significant problem such as lowering of transparency, and a vinyl chloride-based resin composition containing the copolymer. The above object is achieved by a polyorganosiloxane-containing graft copolymer (C) obtained by graft-polymerizing 65 to 5 parts by weight of at least one monomer (B) selected from the group consisting of (meth)acrylic acid ester, aromatic vinyl, and a vinyl cyanide compound under a presence of 35 to 95 parts by weight of a polyorganosiloxane (A) consisting of 0.001 to 0.5% by weight of a bifunctional siloxane-based graft-crosslinking agent (a) and 99.999 to 99.

Abstract: The invention provides a polyorganosiloxane-containing copolymer of high transparency that excels in powder characteristics and that when added in a small amount to a thermoplastic resin, ensures excellent mold release ability at molding thereof, and a thermoplastic resin composition comprising the same. The present invention can solve the above-mentioned problem by providing the thermoplastic resin composition comprising 0.01 to 3% by weight of a polyorganosiloxane-containing graft copolymer (C) with 99.99 to 97% by weight of thermoplastic resin (D), wherein the polyorganosiloxane-containing graft copolymer (C) is obtainable by polymerizing 40 to 10 parts by weight of a vinyl monomer (B) in the presence of 60 to 90 parts by weight of a polyorganosiloxane (A) with a proviso that a sum of (A) and (B) is 100 parts by weight, the polyorganosiloxane (A) is obtainable by polymerizing 99.99 to 99.6 parts by weight of the sum of an organosiloxane having cyclic structure and an alkoxysilane with 0.01 to 0.

Abstract: Hollow silicone fine particles have high productivity, low breakability, a narrow particle size distribution and a volume average particle diameter equal to or lower than 1 ?m. The hollow particles are made by removing organic macromolecular particles and/or an organic solvent away form inside core-shell particles produced by coating particles made from the organic macromolecular particles and/or the organic solvent with silicone compound that is made from one or more units selected from the group consisting of SiO4/2 unit, RSiO3/2 unit, and R2SiO2/2 unit (wherein R is C1-4 alkyl groups, C6-24 aromatic groups, a vinyl group, a ?-(meth)acryloxypropyl group or organic groups having an SH group(s)), the silicone compound containing R2SiO2/2 unit by 20 mole % or less.

Abstract: The present invention provides a thermoplastic resin composition that excels in the slidability and mold release ability at molding of thermoplastic resin by virtue of mixing of a small amount of a polyorganosiloxane-containing graft copolymer excellent in powder characteristics. The present invention can solve the above-mentioned problem by providing thermoplastic resin composition comprising 0.01 to 5% by weight of a polyorganosiloxane-containing graft copolymer (C) and 99.

Abstract: There is provided a vinyl chloride resin composition, which is excellent in processability and can produce a processed article having excellent physical property or a formed molding having excellent property. A processing aid having specific viscosity of at least 0.5 is combined with a vinyl chloride resin, wherein the aid is obtained by polymerizing 1 to 50 parts by weight of a monomer mixture (B) comprising 0 to 49% by weight of methyl methacrylate, 51 to 100% by weight of at least one monomer selected from the group consisting of a methacrylate ester except methyl methacrylate and an acrylate ester, and 0 to 20% by weight of a vinyl monomer copolymerizable therewith, in the presence of a latex of a (co)polymer having specific viscosity of at least ?sp 0.

Abstract: The present invention provides silicone polymer particles having excellent tensile properties and excellent transparency and also provides a silicone composition. The present invention relates to silicone polymer particles having a silicone core-alkoxysilane condensate shell structure in which silicone particles with a volume-average particle diameter of 0.001 ?m to 1.0 ?m are coated with an alkoxysilane condensate, and also relates to a silicone composition containing (A) the silicone polymer particles, (B) a polyorganosiloxane having at least one alkenyl group in its molecule, and (C) a curing agent. The present invention further relates to respective manufacturing methods of the silicone polymer particles and the silicone composition.

Abstract: The present invention provides a polyorganosiloxane-containing resin decreased in volatile siloxane content. A resin which contains 5% or more of volatile silicon compounds immediately after coagulation and dehydration is mixed with an organic solvent, and the resultant mixture is filtered to decrease the content of the volatile silicon compounds in the resin. Therefore, the target polyorganosiloxane-containing resin decreased in volatile siloxane content can be obtained. Mixing the polyorganosiloxane-containing resin and a thermoplastic resin and/or a thermosetting resin gives a resin composition having improved strength.

Abstract: A thermoplastic resin excellent in the effect of improving flame retardancy and impact resistance, and a composition containing the resin. A polyorganosiloxane-containing graft copolymer obtained by: adding 0.1 to 10 parts by weight of a graft-linking agent (C) to 30 to 94.9 parts by weight of a polyorganosiloxane (B) modified with a graft-linking agent (A) and in a latex form to react them with each other; reacting the above reaction product with 0 to 10 parts by weight of a monomer (F) comprising 100 to 20% by weight of a polyfunctional monomer (D) that has two or more polymerizable unsaturated bonds in its molecule and 0 to 80% by weight of another polymerizable monomer (E) in one or more steps; and polymerizing 5 to 69.

Abstract: A thermoplastic resin composition comprising: a graft copolymer obtained by polymerizing 10 to 70 parts by weight of a monomer containing 60 to 100% by weight of at least one vinyl monomer selected from the group consisting of a (meth)acrylate ester compound, an aromatic vinyl compound and a vinyl cyanide compound and 0 to 40% by weight of a monomer which is copolymerizable therewith, in the presence of 30 to 90 parts by weight of hollow rubber particles which are rubber obtained by polymerizing a polymerization component comprising a butadiene without using a crosslinking agent and have a porosity of 3 to 90% in the form of a latex, wherein the total amount of the monomer and the rubber particles is 100 parts by weight; and a thermoplastic resin.

Abstract: The present invention provides a thermoplastic polyester resin composition having excellent flexural modulus, heat resistance, and impact resistance. Namely, the present invention provides a thermoplastic polyester resin composition containing 95 to 55% by weight of a thermoplastic polyester resin (A), 0.2 to 50% by weight of an inorganic filler (B), and 0.5 to 9% by weight of a polyorganosiloxane-containing graft polymer (C).

Abstract: The present invention provides a processing aid for thermoplastic resin having a weight average molecular weight of 10,000 to 300,000, which is obtained by polymerizing an alkyl (meth)acrylate, or an alkyl (meth)acrylate and another vinyl monomer copolymerizable therewith, in the presence of a mercaptan having an alkyl ester group with C4-20 alkyl group as a chain transfer agent, and/or an organic peroxide having a tertiary-butyl peroxy group as a polymerization initiator.

Abstract: The object of the present invention is to provide a flame-retardant thermoplastic resin composition, which comprises: 100 parts by weight of a thermoplastic resin (A), 0.1 to 30 parts by weight of a polyorganosiloxane-containing graft copolymer (B) obtained by polymerizing, in at least one stage, a monomer (B-3) comprising a polyfunctional monomer (B-2) containing at least two polymerizable unsaturated bonds within the molecule thereof, and/or a vinyl monomer (B-4) in the presence of polyorganosiloxane particles (B-1), 0.0005 to 5 parts by weight of at least one metal salt (C) selected from the group consisting of alkali metal salts and bivalent or further polyvalent metal salts, and 0.05 to 2 parts by weight of a fluororesin (D).

Abstract: A rubber-modified styrene resin composition having excellent impact resistance, high tensile strength, and good moldability is provided. The present invention is accomplished by a rubber-modified styrene resin composition containing 99.9 to 97 percent by weight of a rubber-modified styrene resin (E) and 0.1 to 3 percent by weight of a polyorganosiloxane-containing graft copolymer (D), the polyorganosiloxane-containing graft copolymer (D) being a specific copolymer prepared with a polyorganosiloxane (A) produced by polymerizing 99.9 to 99.6 percent by weight of a organosiloxane with 0.1 to 0.4 percent by weight of a graft-linking agent.

Abstract: The present invention provides a polyorganosiloxane-containing graft copolymer composition, which is a useful flame-retardant additive for a thermoplastic resin, comprising polyorganosiloxane-containing graft copolymer (A) prepared by polymerizing 5 to 60 parts by weight of vinyl monomer (a-2) in the presence of 40 to 95 parts by weight of polyorganosiloxane particles (a-1) (the sum of (a-1) and (a-2) is 100 parts by weight); and an antioxidant (B).