# US 11,299,608 B2 · Thermoplastic resin composition, method for producing same and molded body > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,299,608 B2 - Document ID: US11299608B2 - Status: Granted - Kind: B2 - Application number: 16/330,400 - Filed: 2018-01-19 - Published: 2020-07-09 - Granted: 2022-04-12 - Earliest claimed: 2017-01-23 - Assignees: Toyota Boshoku Kabushiki Kaisha - Applicants: Toyota Boshoku Kabushiki Kaisha - Inventors: Keisuke Kato - Web page: https://patentgrep.com/patent/US11299608B2 ## CPC - C08J 3/005: {Processes for mixing polymers} - C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond} - C08J 3/203: {Solid polymers with solid and/or liquid additives} - C08L 23/12: Polypropene - C08L 23/14: Copolymers of propene (C08L23/16 takes precedence) - C08L 25/04: Homopolymers or copolymers of styrene - 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 - C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) - C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) - C08J 2377/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08J2377/10 takes precedence) - C08J 2423/12: Polypropene - C08J 2423/26: modified by chemical after-treatment - C08K 3/36: Silica - C08L 2207/04: Thermoplastic elastomer - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract Disclosed is a thermoplastic resin composition designed to, even when containing a filler, reduce a trade-off between stiffness and impact resistance to achieve a balance between impact resistance and stiffness, a method for producing the same, and a molded body. The thermoplastic resin composition is obtained by blending a polyolefin resin, a polyamide resin containing an inorganic filler, and a modified elastomer having a reactive group that reacts with the polyamide resin, wherein the polyolefin resin has a number-average molecular weight of 350,000 or more, and the polyamide resin has a structure in which a hydrocarbon group interposed between adjacent amide bonds in a main chain has 5 or less straight chain carbon atoms. The molded body is composed of the thermoplastic resin composition. The method for producing the thermoplastic resin composition includes melt-kneading a polyolefin resin and a melt-kneaded product of a polyamide resin and a modified elastomer. ## Claims ### Claim 1 A thermoplastic resin composition obtained by blending a polyolefin resin, a polyamide resin containing an inorganic filler, and a modified elastomer having a reactive group that reacts with the polyamide resin, wherein the polyolefin resin is a propylene homopolymer and the propylene homopolymer has a number-average molecular weight of 500,000 or more, the polyolefin resin has no reactive group that reacts with the polyamide resin, the polyamide resin is a polyamide 6, the inorganic filler is a layered silicate which has silicate layers, the silicate layers and the polyamide resin have affinity for each other or bind together, and the modified elastomer is a maleic anhydride-modified ethylene-butene copolymer. ### Claim 2 (depends on 1) The thermoplastic resin composition according to claim 1, further comprising: a continuous phase (A) containing the polyamide resin, a dispersed phase (B1) containing the modified elastomer, wherein the dispersed phase (B1) is dispersed in the continuous phase (A), a dispersed phase (B2) containing the polyolefin resin, wherein the dispersed phase (B2) is dispersed in the continuous phase (A), and the inorganic filler (C) is dispersed in the continuous phase (A). ### Claim 3 (depends on 1) A molded body comprising the thermoplastic resin composition according to claim 1. ### Claim 4 (depends on 1) A method for producing the thermoplastic resin composition according to claim 1, comprising: melt-kneading the polyolefin resin and a melt-kneaded product of the polyamide resin containing an inorganic filler and the modified elastomer. ### Claim 5 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the polyolefin resin has a number-average molecular weight of 520,000 or more. ### Claim 6 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition is obtained by melt-kneading a melt-kneaded product and the polyolefin resin, wherein the melt-kneaded product is obtained by melt-kneading the polyamide resin and the modified elastomer. ### Claim 7 A thermoplastic resin composition comprising a polyolefin resin, a polyamide resin containing an inorganic filler, and a modified elastomer having a reactive group that reacts with the polyamide resin, wherein the polyolefin resin is a propylene homopolymer and the propylene homopolymer has a number-average molecular weight of 500,000 or more, the polyolefin resin has no reactive group that reacts with the polyamide resin, the polyamide resin is a polyamide 6, the inorganic filler is a layered silicate which has silicate layers, the silicate layers and the polyamide resin have affinity for each other or bind together, and the modified elastomer is a maleic anhydride-modified ethylene-butene copolymer.