# US 2013/0156982 A1 · Method for producing thermoplastic resin composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156982 A1 - Document ID: US20130156982A1 - Status: Published application - Kind: A1 - Application number: 13/504,268 - Filed: 2011-05-18 - Published: 2013-06-20 - Earliest claimed: 2010-09-13 - Assignees: The Yokohama Rubber Co., Ltd. - Inventors: Koichi Kawaguchi; Yuichi Hara - Web page: https://patentgrep.com/patent/US20130156982A1 ## CPC - C08J 3/005: {Processes for mixing polymers} - B60C 1/0008: {Compositions of the inner liner} - C08L 23/0861: Saponified copolymers, e.g. ethylene vinyl alcohol copolymers - C08L 29/06: Copolymers of allyl alcohol - 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 - F16L 11/04: made of rubber or flexible plastics - F16L 11/06: with homogeneous wall (F16L11/11 takes precedence) - C08L 23/26: modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) - 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) - F16L 2011/047: {with a diffusion barrier layer} - Y10T 428/1383: Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer] - 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) - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method for producing a thermoplastic resin composition, comprising the steps of: (I) melt-kneading (A) acid anhydride-modified or epoxy-modified rubber with (B) ethylene-vinylalcohol copolymer resin to prepare a first resin composition in which (A) acid anhydride-modified or epoxy-modified rubber is dispersed in (B) ethylene-vinylalcohol copolymer resin, (II) crosslinking (C) crosslinkable elastomer while melt-kneading the crosslinkable elastomer with (D) polyamide resin to prepare a second resin composition in which crosslinked elastomer particles are dispersed in (D) polyamide resin, and (III) melt-mixing together the first resin composition with the second resin composition. The thermoplastic resin composition has excellent gas barrier properties, low-temperature durability, and fatigue resistance. ## Claims ### Claim 1 A method for producing a thermoplastic resin composition, comprising the steps of: (I) melt-kneading (A) acid anhydride-modified or epoxy-modified rubber with (B) ethylene-vinylalcohol copolymer resin to prepare a first resin composition in which (A) acid anhydride-modified or epoxy-modified rubber is dispersed in (B) ethylene-vinylalcohol copolymer resin, (II) crosslinking (C) crosslinkable elastomer while melt-kneading the crosslinkable elastomer with (D) polyamide resin to prepare a second resin composition in which crosslinked elastomer particles are dispersed in (D) polyamide resin, and (III) melt-mixing together the first resin composition with the second resin composition. ### Claim 2 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which (A) acid anhydride-modified or epoxy-modified rubber is selected from the group consisting of ethylene-α-olefin copolymers and the acid anhydride-modified products and epoxy-modified products of their derivatives, ethylene-unsaturated carboxylic acid copolymers and acid anhydride-modified products and epoxy-modified products of their derivatives, and combinations thereof. ### Claim 3 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which (C) crosslinkable elastomer is selected from the group consisting of halogenated butyl rubbers, halogenated isoolefin-paraalkylstyrene copolymers, and combinations thereof. ### Claim 4 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which (D) polyamide resin is selected from the group consisting of Nylon 6, Nylon 66, Nylon 6/66 copolymer, Nylon 11, Nylon 12, Nylon MXD6, and combinations thereof. ### Claim 5 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which the amount of (A) acid anhydride-modified or epoxy-modified rubber contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (B) ethylene-vinylalcohol copolymer resin. ### Claim 6 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which the amount of (C) crosslinkable elastomer contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (D) polyamide resin. ### Claim 7 (depends on 1) The method for producing a thermoplastic resin composition according to claim 1, in which the first resin composition and the second resin composition are melt-mixed at a weight ratio of from 90:10 to 10:90. ### Claim 8 (depends on 1) A thermoplastic resin composition produced by the method according to claim 1. ### Claim 9 (depends on 8) A pneumatic tire using a film comprising the thermoplastic resin composition according to claim 8 in an innerliner. ### Claim 10 (depends on 8) A hose using a film comprising the thermoplastic resin composition according to claim 8 in a gas barrier layer. ### Claim 11 (depends on 2) The method for producing a thermoplastic resin composition according to claim 2, in which (C) crosslinkable elastomer is selected from the group consisting of halogenated butyl rubbers, halogenated isoolefin-paraalkylstyrene copolymers, and combinations thereof. ### Claim 12 (depends on 2) The method for producing a thermoplastic resin composition according to claim 2, in which (D) polyamide resin is selected from the group consisting of Nylon 6, Nylon 66, Nylon 6/66 copolymer, Nylon 11, Nylon 12, Nylon MXD6, and combinations thereof. ### Claim 13 (depends on 3) The method for producing a thermoplastic resin composition according to claim 3, in which (D) polyamide resin is selected from the group consisting of Nylon 6, Nylon 66, Nylon 6/66 copolymer, Nylon 11, Nylon 12, Nylon MXD6, and combinations thereof. ### Claim 14 (depends on 2) The method for producing a thermoplastic resin composition according to claim 2, in which the amount of (A) acid anhydride-modified or epoxy-modified rubber contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (B) ethylene-vinylalcohol copolymer resin. ### Claim 15 (depends on 3) The method for producing a thermoplastic resin composition according to claim 3, in which the amount of (A) acid anhydride-modified or epoxy-modified rubber contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (B) ethylene-vinylalcohol copolymer resin. ### Claim 16 (depends on 4) The method for producing a thermoplastic resin composition according to claim 4, in which the amount of (A) acid anhydride-modified or epoxy-modified rubber contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (B) ethylene-vinylalcohol copolymer resin. ### Claim 17 (depends on 2) The method for producing a thermoplastic resin composition according to claim 2, in which the amount of (C) crosslinkable elastomer contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (D) polyamide resin. ### Claim 18 (depends on 3) The method for producing a thermoplastic resin composition according to claim 3, in which the amount of (C) crosslinkable elastomer contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (D) polyamide resin. ### Claim 19 (depends on 4) The method for producing a thermoplastic resin composition according to claim 4, in which the amount of (C) crosslinkable elastomer contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (D) polyamide resin. ### Claim 20 (depends on 5) The method for producing a thermoplastic resin composition according to claim 5, in which the amount of (C) crosslinkable elastomer contained in the thermoplastic resin composition is 70 to 180 parts by weight with respect to 100 parts by weight of (D) polyamide resin.