Thermoplastic resin composition and molded article

摘要

The objective of the present invention is to provide a thermoplastic resin composition having an excellent balance of chemical resistance, heat resistance and impact resistance and a molded article comprising this thermoplastic resin composition. The present thermoplastic resin composition comprises a rubber-reinforced resin, an ethylene•(meth)acrylic acid ester•carbon monoxide copolymer, and polytetrafluoroethylene, and contents of ethylene•(meth)acrylic acid ester•carbon monoxide copolymer and polytetrafluoroethylene are respectively from 0.5 to 20 parts by weight and from 0.01 to 5 parts by weight, with respect to 100 parts by weight of the rubber-reinforced resin. A modified polyolefin resin may be contained.

主权项

1. A thermoplastic resin composition, comprising:
a rubber-reinforced resin; an ethylene•(meth)acrylic acid ester•carbon monoxide copolymer; and a polytetrafluoroethylene; with the proviso that an organic flame retardant, inorganic flame retardant or a reactive flame retardant is not present in the thermoplastic resin composition; wherein a content of the ethylene•(meth)acrylic acid ester carbon monoxide copolymer is from 0.5 to 20 parts by weight, and a content of the polytetrafluoroethylene is in the range from 0.01 to 1 parts by weight, wherein all parts by weight are with respect to 100 parts by weight of the rubber-reinforced resin, the rubber-reinforced resin comprises: a rubber-reinforced copolymeric resin (A1) which is obtained by polymerizing a vinyl-based monomer (b1) in the presence of a rubbery polymer (a), or a mixture of the rubber-reinforced copolymeric resin (A1) and a copolymer (A2) which is obtained by polymerizing a vinyl-based monomer (b2), wherein a content of the rubbery polymer (a) is from 5% to 40% by weight with respect to 100% by weight of the rubber-reinforced resin, and a total amount of a unit derived from α-methyl styrene and a unit derived from a maleimide-based compound in the rubber-reinforced resin is from 3 to 60% by weight with respect to 100% by weight of said rubber-reinforced resin.