THERMOPLASTIC RESIN COMPOSITION, PREPARATION METHOD THEREFOR, AND MOLDED PRODUCT

• Main Authors: HAN, Se Jin, KANG, Byoung Il, LEE, Ju Hyeong
• Format: Patent
• Language: English; French; German
• Published: 31.07.2019
• Subjects: APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THEIR PREPARATION OR CHEMICAL WORKING-UP

Disclosed are a thermoplastic resin composition, a method of preparing the same, and a molded part manufactured using the same, wherein the thermoplastic resin composition includes a-1) 1 to 30 % by weight of a first graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.05 µm or more and less than 0.2 µm; a-2) 5 to 45 % by weight of a second graft polymer obtained by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto a conjugated diene rubber having an average particle diameter of 0.2 to 0.5 µm; b) 50 to 80 % by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer; and c) 1 to 10 % by weight of a (meth)acrylic acid alkyl ester polymer. According to the present invention, the mechanical properties of the thermoplastic resin composition are equivalent or superior to those of conventional thermoplastic resin compositions. In addition, during a plating process using a chromium-free etchant with reduced toxicity, the thermoplastic resin composition has excellent plating adhesion, thermal cycle characteristics, and appearance. Further, since use of the thermoplastic resin composition does not cause increase in process cost, the present invention may provide economic advantages.