Abstract: A natural rubber-containing thermoplastic resin composition includes a graft copolymer (A) obtained by graft-polymerizing a vinyl monomer mixture (a) including at least an aromatic vinyl monomer to a rubbery polymer (R) composed of 10 to 70% by mass of a natural rubber having a weight average particle size of 0.3 to 1.2 ?m and 30 to 90% by mass of a synthetic rubber having a weight-average particle size of 0.2 to 0.4 ?m, wherein particles of the natural rubber include not less than 5% by mass of natural rubber articles with a size of 1.0 ?m or larger; and particles of the rubbery polymer (R) with a size of 1.0 ?m or larger have an internal graft ratio of 20% or higher.

Abstract: A natural rubber-containing thermoplastic resin composition includes a graft copolymer (A) obtained by graft-polymerizing a vinyl monomer mixture (a) including at least an aromatic vinyl monomer to a rubbery polymer (R) composed of 10 to 70% by mass of a natural rubber having a weight average particle size of 0.3 to 1.2 ?m and 30 to 90% by mass of a synthetic rubber having a weight-average particle size of 0.2 to 0.4 ?m, wherein particles of the natural rubber include not less than 5% by mass of natural rubber articles with a size of 1.0 ?m or larger; and particles of the rubbery polymer (R) with a size of 1.0 ?m or larger have an internal graft ratio of 20% or higher.

Abstract: A thermoplastic resin composition obtained by mixing 100 parts by weight of at least one thermoplastic resin (A) with 0.1 to 4 parts by weight of (B) a polyfunctional compound having three or more functional groups in which at least one of the terminal structures having the functional groups is a structure represented by formula (1): where R is an alkylene group with 1-15 carbon atoms; n is an integer of 1 to 10; and X is at least one functional group selected from the group consisting of hydroxyl group, aldehyde group, carboxyl group, sulfo group, amino group, isocyanate group, carbodiimide group, oxazoline group, oxazine group, amide group, silanol group and silyl ether group.

Abstract: The present invention relates to a thermoplastic resin composition obtained by compounding phosphoric acid and/or monosodium phosphate (D) with a resin composition including a styrenebased resin (A), a graft copolymer (B), and an aliphatic polyester resin (C), wherein the thermoplastic resin composition is excellent in mechanical properties (e.g., impact resistance) and thermal stability, and, in addition, can be molded without any problem in terms of safety and hygiene.

Abstract: The present invention relates to a thermoplastic resin composition obtained by compounding phosphoric acid and/or monosodium phosphate (D) with a resin composition including a styrenebased resin (A), a graft copolymer (B), and an aliphatic polyester resin (C), wherein the thermoplastic resin composition is excellent in mechanical properties (e.g., impact resistance) and thermal stability, and, in addition, can be molded without any problem in terms of safety and hygiene.

Abstract: A thermoplastic resin composition obtained by mixing 100 parts by weight of at least one thermoplastic resin (A) with 0.1 to 4 parts by weight of (B) a polyfunctional compound having three or more functional groups in which at least one of the terminal structures haying the functional groups is a structure represented by formula (1): where R is an alkylene group with 1-15 carbon atoms; n is an integer of 1 to 10; and X is at least one functional group selected from the group consisting of hydroxyl group, aldehyde group, carboxyl group, sulfo group, amino group, isocyanate group, carbodiimide group, oxazoline group, oxazine group, amide group, silanol group and silyl ether group.

Abstract: A thermoplastic resin composition and a molded article thereof, respectively excellent in flowability and mechanical properties, and, in a preferred mode, also excellent in low warping property, laser transmittance and laser weldability, is obtained by mixing (B) 0.1 to 4 parts by weight of a polyfunctional compound having three or more functional groups, in which at least one of the terminal structures having the functional groups is a structure containing alkylene oxide units, with (A) 100 parts by weight of a thermoplastic resin, and further provides a molded particle thereof. It is preferred that the (A) thermoplastic resin is one or more selected from a polyester resin and polycarbonate resin.

Abstract: A polyester resin composition which comprises 30 to 80 wt % of a polybutylene terephthalate resin (A), 10 to 40 wt % of a polyethylene terephthalate resin (B), 0.1 to 40 wt % of a calcined kaolin (C) having an average particle diameter of 1.5 micro meter or less and 0.1 to 40 wt % of a spherical inorganic filler (D) is excellent in direct metal vapor deposition ability, and a light-reflecting article comprising a molded article from the resin composition and a vapor deposited metal film formed on part or whole of the surface of the molded article provides a high brightness feeling and is free from lowering of the brightness feeling due to shadowing after high temperature exposure, and thus can be suitably used as a housing, a reflector or an extension in an automobile lamp, a lighting apparatus in a household electrical appliance, or the like.

Abstract: A polyester resin composition which comprises 30 to 80 wt % of a polybutylene terephthalate resin (A), 10 to 40 wt % of a polyethylene terephthalate resin (B), 0.1 to 40 wt % of a calcined kaolin (C) having an average particle diameter of 1.5 micro meter or less and 0.1 to 40 wt % of a spherical inorganic filler (D) is excellent in direct metal vapor deposition ability, and a light-reflecting article comprising a molded article from the resin composition and a vapor deposited metal film formed on part or whole of the surface of the molded article provides a high brightness feeling and is free from lowering of the brightness feeling due to shadowing after high temperature exposure, and thus can be suitably used as a housing, a reflector or an extension in an automobile lamp, a lighting apparatus in a household electrical appliance, or the like.

Abstract: A wholly aromatic liquid crystalline polyester resin composition comprising about 97-60 parts by weight of a wholly aromatic polyester resin (A) having melting peak determined by DSC equal to or higher than 310° C.; and about 3-40 parts by weight of a wholly aromatic polyester resin (B) having melting peak determined by DSC equal to or lower than 300° C. is provided. The novel liquid crystalline polyester resin composition of the present invention exhibits an improved melt flowability and can provide a molded article having reflow-soldering heat resistance.

Abstract: A wholly aromatic liquid crystalline polyester resin composition comprising about 97-60 parts by weight of a wholly aromatic polyester resin (A) having melting peak determined by DSC equal to or higher than 310° C.; and about 3-40 parts by weight of a wholly aromatic polyester resin (B) having melting peak determined by DSC equal to or lower than 300° C. is provided. The novel liquid crystalline polyester resin composition of the present invention exhibits an improved melt flowability and can provide a molded article having reflow-soldering heat resistance.

Abstract: A process is disclosed for preparing of aromatic polyester-polystyrene block copolymers which comprises subjecting preferentially styrene polymers (A) having terminal functional groups reactive with acid chloride groups and an excess of aromatic dicarboxylic acid dihalides (C) to condensation and then subjecting continuously the resultant mixture and aromatic dihydroxy compounds (B) to interfacial polymerization at the ratio (A)/[(B)+(C)] by weight of 5/95 to 80/20, without separating reaction products of styrene polymers (A) and aromatic dicarboxylic acid dihalides (C), and the block copolymers thus prepared contain a small amount of uncopolymerized styrene polymers, have long aromatic polyester segments, show low birefringence, good transparency, exceptionally low birefringence, low melt viscosity, and good mechanical strength, and are particularly useful as materials for optical instruments.