Thermoplastic Resin Composition for Plating

Patent metadata

Field	Value
Publication number	US-2020369877-A1
Application number	US-201816958177-A
Country	US
Kind code	A1
Filing date	Dec 31, 2018
Priority date	Dec 31, 2017
Publication date	Nov 26, 2020
Grant date	—

Abstract

A thermoplastic resin composition for plating of the present invention comprises: about 35 wt % to about 60 wt % of a polycarbonate resin; about 1 wt % to about 20 wt % of a first rubber modified vinyl graft copolymer; about 5 wt % to about 30 wt % of a second rubber modified vinyl graft copolymer; and about 25 wt % to about 50 wt % of an aromatic vinyl copolymer resin, wherein the first rubber modified aromatic vinyl graft copolymer and the second rubber modified aromatic vinyl graft copolymer are present in a weight ratio of about 1:1 to about 1:10. The thermoplastic resin composition for plating and a plated molded product comprising the same have good etching property, plating adhesion, impact resistance, heat resistance and the like.

First claim

1 . A thermoplastic resin composition for plating, comprising:
about 35 wt % to about 60 wt % of a polycarbonate resin; about 1 wt % to about 20 wt % of a first rubber modified vinyl graft copolymer; about 5 wt % to about 30 wt % of a second rubber modified vinyl graft copolymer; and about 25 wt % to about 50 wt % of an aromatic vinyl copolymer resin, wherein the first rubber modified vinyl graft copolymer is a quaternary graft copolymer obtained through graft copolymerization of an alkyl (meth)acrylate, an aromatic vinyl monomer and a copolymerizable monomer to a rubber polymer, wherein the second rubber modified vinyl graft copolymer is a ternary graft copolymer obtained through graft copolymerization of an aromatic vinyl monomer and a copolymerizable monomer to a rubber polymer, and wherein the first rubber modified vinyl graft copolymer and the second rubber modified vinyl graft copolymer are present in a weight ratio of about 1:1 to about 1:10.

2 . The thermoplastic resin composition for plating according to claim 1 , wherein the aromatic vinyl copolymer resin is a polymer of a monomer mixture comprising an aromatic vinyl monomer and a vinyl cyanide monomer.

3 . The thermoplastic resin composition for plating according to claim 1 , wherein the thermoplastic resin composition has an adhesion strength of about 500 gf/cm to about 700 gf/cm, as measured on a 30 μm thick Cr-plating layer of an injection-molded specimen having a size of 10 cm×10 cm×0.3 cm at a peeling rate of 50 mm/min using a tensile tester.

4 . The thermoplastic resin composition for plating according to claim 1 , wherein the thermoplastic resin composition has a notched Izod impact strength of about 35 kgf·cm/cm to about 65 kgf·cm/cm, as measured on a ¼″ thick notched Izod specimen in accordance with ASTM D256.

5 . The thermoplastic resin composition for plating according to claim 1 , wherein the thermoplastic resin composition has a heat deflection temperature (HDT) of about 90° C. to about 120° C., as measured at a heating rate of 120° C./hr under a load of 1.8 MPa in accordance with ASTM D648.

6 . A plated molded product comprising:
a base layer; and a plating layer formed on at least one surface of the base layer, wherein the base layer is formed of the thermoplastic resin composition for plating according to claim 1 .

Assignees

• Lotte Chemical Corp

Inventors

• Kim Kyoung Ju
• Kwon Kee Hae
• Kim Myung Hun
• Park Jung Woo

Classifications

• C08L51/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C08L51/003

  grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence) · CPC title

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L55/02

  ABS [Acrylonitrile-Butadiene-Styrene] polymers · CPC title

• C08L51/04

  grafted on to rubbers · CPC title