摘要:
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.
摘要:
The present invention provides a polyorganosiloxane-containing graft copolymer which is obtainable by polymerizing 0.5 to 10 parts by weight of a vinyl monomer (B) comprising 100 to 50% by weight of a polyfunctional monomer (b-1) containing two or more polymerizable unsaturated bonds in the presence of 40 to 90 parts of polyorganosiloxane particles, followed by further polymerizing 5 to 50 parts by weight of a vinyl monomer (C); A polyorganosiloxane-containing graft copolymer which is obtainable by polymerizing 0 to 10 parts by weight of a vinyl monomer (B) comprising 100 to 50% by weight of a polyfunctional monomer containing two or more polymerizable unsaturated bonds in the presence of 30 to 95 parts of a polyorganosiloxane in a latex form as obtained by seed polymerization using, as a seed polymer, a hydrophilic polymer capable of swelling in the corresponding organosiloxane, followed by further polymerizing 5 to 70 parts by weight of a vinyl monomer (C); a flame retardant which comprises said copolymer; and a resin composition which comprises said retardant and a thermoplastic resin.
摘要:
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 μm. 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 γ-(meth)acryloxypropyl group or organic groups having an SH group(s)), the silicone compound containing R2SiO2/2 unit by 20 mole % or less.
摘要:
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.
摘要:
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).
摘要:
An expandable vinyl chloride resin composition that the expansion ratio of a vinyl chloride resin can be greatly increased by the use of thermally decomposable inorganic blowing agents without the use of organic solvent blowing agents, and which comprises 100 parts by weight of a vinyl chloride resin, 5 to 30 parts by weight of, as a processing aid, a (meth)acrylic acid ester polymer having a specific viscosity of not less than 0.73 measured at 30° C. with respect to a solution of 0.1 g of the polymer dissolved in 100 ml of chloroform, and 2 to 25 parts by weight of a thermally decomposable inorganic blowing agent.
摘要:
There is provided a rubber latex for an excellent impact modifier used for a thermoplastic resin. A rubber latex containing water in particles obtained by seed polymerization with seed polymers which are highly hydrophilic and sufficiently swellable into a rubber monomer is used as an impact modifier for a thermoplastic resin.
摘要:
There is provided an excellent impact modifier for a vinyl chloride resin. There is used, as an excellent impact modifier, a copolymer which is prepared by polymerizing 10 to 70% by weight of a monomer or monomers containing 60 to 100% by weight of at least one vinyl monomer selected from the group consisting of a (meth)acrylate compound, an aromatic vinyl compound, a vinyl cyanide compound and vinyl chloride, and 0 to 40% by weight of the other monomer copolymerizable therewith, in the presence of 30 to 90% by weight of a hollow rubber particle of which glass transition temperature Tg is at most 0° C. and a void ratio is 3 to 90% by volume in a latex state, and which contains a cross linking agent in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total rubber component monomer.
摘要:
An amorphous polyolefin resin composition being excellent in the balance of the impact resistance with the surface smoothness and, further, the balance of the impact resistance with the transparency. In this amorphous polyolefin resin composition, a block copolymer (B-1) having at least one polymer block unit which is poor in the affinity with an amorphous polyolefin (A) but excellent in the affinity with a core-shell type elastomer (B-2) is combined with a core-shell type elastomer (B-2) which is excellent in the affinity with at least one polymer block of the block copolymer (B-1) and has a specific composition and a specific structure, and these components are composited in the amorphous polyolefin resin composition, thereby achieving well-balanced properties, i.e., an excellent impact resistance, an excellent surface glossiness and a high transparency.
摘要:
A thermoplastic resin composition comprises a thermoplastic resin (A) and graft copolymer particles (B) having a hollow rubber portion and graft chain, in which a volumetric proportion of hollow part in the hollow rubber portion of the graft copolymer particles is 1 to 70% by volume. The thermoplastic resin composition contains the thermoplastic resin and the graft copolymer particles in a weight ratio (A)/(B) of 2/98 to 100/1. The hollow part in the graft copolymer particle functions to further improve impact resistance.