Resin composition for direct metal plating, molded article, and metal-plated molded article

摘要

The objective of the present invention is to provide a resin composition for direct plating whose plating performance such as depositibility and appearance after forming a metal film including copper film and the like by electroplating in direct plating method is excellent, a molded article comprising this composition, and a plated article having a metal film or an alloy film, formed by direct plating. The present composition is a thermoplastic resin composition containing a rubber-reinforced vinyl-based resin and the rubber-reinforced vinyl-based resin comprises a diene-based rubbery polymer [a1] and an ethylene•α-olefin-based rubbery polymer [a2], the total amount of the diene-based rubbery polymer [a1] and the ethylene•α-olefin-based rubbery polymer [a2] is from 3 to 30% by mass based on the thermoplastic resin composition, and the ratio of the ethylene•α-olefin-based rubbery polymer [a2] to the total amount is from 0.01 to 0.4.

主权项

1. A resin composition for direct plating, which is a thermoplastic resin composition consisting of a polycarbonate resin, an antioxidant, and a component of mixture (1) or mixture (2):
mixture (1): a mixture consisting of a rubber-reinforced vinyl-based resin [A1] obtained by polymerizing a vinyl-based monomer [b1] in the presence of a diene-based rubbery polymer [a1], wherein the vinyl-based monomer [b1] consists of an aromatic vinyl compound and a cyanidated vinyl compound, and the diene-based rubbery polymer [a1] is selected from the group consisting of a polybutadiene homopolymer, a polyisoprene homopolymer, a styrene•butadiene copolymer, a styrene•butadiene•styrene copolymer, a styrene•isoprene copolymer, a styrene•isoprene•styrene copolymer, and combinations thereof, and a rubber-reinforced vinyl based resin [A2] obtained by polymerizing a vinyl-based monomer [b2] in the presence of an ethylene•α-olefin-based rubbery polymer [a2] wherein the vinyl-based monomer [b2] consists of an aromatic vinyl compound and a cyanidated vinyl compound, and the ethylene •α-olefin-based rubbery polymer [a2] is selected from the group consisting of a ethylene-propylene copolymer, an ethylene•butene-1copolymer, an ethylene•α-olefin•non-conjugated diene copolymer, an ethylene-propylene•5-ethylidene-2-norbornene copolymer, an ethylene•butene•5-ethylidene-2-norbornene copolymer, and combinations thereof, mixture (2): a mixture consisting of said rubber-reinforced vinyl-based resin [A1], said rubber-reinforced vinyl based resin [A2] and a (co)polymer of a vinyl-based monomer [b3] consisting of an aromatic vinyl compound and a cyanidated vinyl compound, wherein the total amount of said diene-based rubbery polymer [a1] and said ethylene•α-olefin-based rubbery polymer [a2] is in a range from 3 to 30% by mass based on said thermoplastic resin composition, and wherein the ratio of said ethylene•α-olefin-based rubbery polymer [a2] to said total amount of the diene-based rubbery polymer [a1] and the ethylene•α-olefin-based rubbery polymer [a2] is in a range from 0.01 to 0.25, wherein the vinyl-based monomers [b1], [b2] and [b3] do not contain (meth)acrylic ester monomer units, wherein the rubber-reinforced vinyl-based resin [A1] consists of polymerized units of the vinyl-based monomer [b1] and the diene-based rubbery polymer [a1], and the rubber-reinforced vinyl-based resin [A2] consists of polymerized units of the vinyl-based monomer [b2] and the ethylene•α-olefin-based rubbery polymer [a2].