# US 11,441,031 B2 · Thermoplastic resin composition, molded article, method for manufacturing thermoplastic resin composition, and, method for manufacturing plated molded article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,031 B2 - Document ID: US11441031B2 - Status: Granted - Kind: B2 - Application number: 16/975,323 - Filed: 2019-02-25 - Published: 2021-02-04 - Granted: 2022-09-13 - Earliest claimed: 2018-02-27 - Assignees: Mitsubishi Engineering-Plastics Corporation - Applicants: Mitsubishi Engineering-Plastics Corporation - Inventors: Ryusuke Yamada; Tatsuya Kikuchi; Yuki Hiwatashi - Web page: https://patentgrep.com/patent/US11441031B2 ## CPC - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C23C 18/1608: {from pretreatment step, i.e. selective pre-treatment} - C08G 59/5033: {aromatic} - C08K 3/04: Carbon - C08K 3/042: {Graphene or derivatives, e.g. graphene oxides} - C08K 3/22: of metals - C08K 3/2279: {of antimony} - C08K 7/14: Glass - C08L 67/03: the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings - C08L 77/00: Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers - C23C 18/1612: {through irradiation means} - C23C 18/1641: {Organic substrates, e.g. resin, plastic} - C23C 18/204: {Radiation, e.g. UV, laser} - C08K 2003/2227: {of aluminium} - C08K 2003/2231: {of tin} - C08K 2003/2248: {of copper} - C08K 2003/2251: {of chromium} - C08K 2003/2296: {of zinc} - C08K 2201/001: Conductive additives - C08L 2310/00: Masterbatches - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A thermoplastic resin composition contains 10 to 90% by mass of (A) thermoplastic resin; 1 to 20% by mass of (B) laser direct structuring additive; and 0.3 to 7.0% by mass of (D) graphite, a total of the ingredient (A), the ingredient (B) and the ingredient (D) being always kept at 100% by mass or below, and a ratio by mass given by ingredient (B)/ingredient (D) being 1.0 to 20. ## Claims ### Claim 1 A thermoplastic resin composition comprising: 10 to 90% by mass of (A) thermoplastic resin; 1 to 20% by mass of (B) laser direct structuring additive; and 0.3 to 7,0% by mass of (D) graphite, wherein the (D) graphite is flaky, a total of the ingredient (A), the ingredient (B) and the ingredient (D) being always kept at 100% by mass or below, and a ratio by mass given by ingredient (B)/ingredient (D) being 1.0 to 20. ### Claim 2 (depends on 1) The thermoplastic resin composition of claim 1, further comprising 60% by mass or less of (C) inorganic reinforcing fiber, wherein the (C) inorganic reinforcing fiber is a glass fiber. ### Claim 3 (depends on 1) The thermoplastic resin composition of claim 1, further comprising 10% by mass or more and 60% by mass or less of (C) inorganic reinforcing fiber. ### Claim 4 (depends on 2) The thermoplastic resin composition of claim 2, wherein a total of the ingredient (A), the ingredient (B), the ingredient (C) and the ingredient (D) accounts for 95% by mass or more of the thermoplastic resin composition. ### Claim 5 (depends on 1) The thermoplastic resin composition of claim 1, wherein the thermoplastic resin is selected from polyamides resin, polycarbonate resin, polyester resin, polyolefin resin, polypropylene resin, styrene-based resin, polyethylene resin and acrylic resin. ### Claim 6 (depends on 1) The thermoplastic resin composition of claim 1, wherein the (A) thermoplastic resin contains a xylylenediamine-based polyamide resin that is composed of a diamine-derived structural unit and a dicarboxylic acid-derived structural unit, 50 mol % or more of the diamine-derived structural unit being derived from xylylenediamine. ### Claim 7 (depends on 1) The thermoplastic resin composition of claim 1, wherein the (A) thermoplastic resin contains a polycarbonate resin. ### Claim 8 (depends on 1) The thermoplastic resin composition of claim 1, wherein polybutylene terephthalate accounts for 15 to 45% by mass, isophthalate-modified polybutylene terephthalate accounts for 15 to 45% by mass, and polyamide resin accounts for 70 to 10% by mass, of the (A) thermoplastic resin. ### Claim 9 (depends on 1) The thermoplastic resin composition of claim 1, wherein the (B) laser direct structuring additive contains a metal oxide that contains antimony and tin. ### Claim 10 (depends on 1) The thermoplastic resin composition of claim 1, wherein the (B) laser direct structuring additive contains copper chromium oxide. ### Claim 11 (depends on 1) The thermoplastic resin composition of claim 1, wherein the (B) laser direct structuring additive contains a conductive oxide that contains aluminum and zinc and has a resistivity of 103 Ω·cm or smaller. ### Claim 12 (depends on 1) The thermoplastic resin composition of claim 1, wherein a content of a carbon filler other than the graphite is less than 10% by mass of the graphite content. ### Claim 13 (depends on 1) A molded article formed of the thermoplastic resin composition described in claim 1. ### Claim 14 (depends on 12) The molded article of claim 12, having on a surface thereof a plating layer. ### Claim 15 (depends on 14) The molded article of claim 14, wherein the plating has an antenna performance. ### Claim 16 (depends on 13) The molded article of claim 13, being a mobile electronic equipment component. ### Claim 17 (depends on 13) The molded article of claim 13, being a sensor component. ### Claim 18 (depends on 1) A method for manufacturing the thermoplastic resin composition described in claim 1, the method comprising preparing a masterbatch of the (D) graphite using a thermoplastic resin, and then kneading the masterbatch with other ingredients. ### Claim 19 (depends on 1) A method for manufacturing a plated molded article, the method comprising irradiating laser light on a molded article formed of the thermoplastic resin composition described in claim 1, and then applying a metal to form a plating layer.