# US 10,483,503 B2 · Battery packaging material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,503 B2 - Document ID: US10483503B2 - Status: Granted - Kind: B2 - Application number: 14/778,904 - Filed: 2014-03-19 - Published: 2016-02-18 - Granted: 2019-11-19 - Earliest claimed: 2013-03-25 - Assignees: Dai Nippon Printing Co., Ltd. - Applicants: Dai Nippon Printing Co., Ltd. - Inventors: Yohei Hashimoto; Rikiya Yamashita; Yaichiro Hori - Web page: https://patentgrep.com/patent/US10483503B2 ## CPC - H01M 50/124: having a layered structure - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 15/08: of synthetic resin - B32B 27/18: characterised by the use of special additives - B32B 27/26: using curing agents - B32B 27/308: {comprising acrylic (co)polymers} - B32B 27/34: comprising polyamides - B32B 27/36: comprising polyesters - B32B 27/38: comprising epoxy resins - B32B 27/40: comprising polyurethanes - B32B 27/42: comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines - H01M 50/1245: {characterised by the external coating on the casing} - H01M 50/126: comprising three or more layers - H01M 50/145: for protecting against corrosion - B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer - B32B 2255/26: Polymeric coating - B32B 2264/025: Acrylic resin particles, e.g. polymethyl methacrylate or ethylene-acrylate copolymers - B32B 2264/0292: Polyurethane particles - B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion - B32B 2307/746: Slipping, anti-blocking, low friction - B32B 2439/00: Containers; Receptacles - B32B 2457/10: Batteries - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The purpose of the present invention is to provide a film-like battery packaging material in which a coating layer, which can be cured in a short time and exhibits superior chemical resistance, is provided to a substrate layer surface. In the battery packaging material, which comprises a laminate body that includes at least a coating layer, a substrate layer, an adhesive layer, a barrier layer, and a sealant layer, in that order, the use of a resin composition containing a heat-curable resin and a curing accelerator as the coating layer enables the formation of a coating layer that can be cured in a short time and contributes to electrolyte liquid, etc., resistance. ## Claims ### Claim 1 A battery packaging material which comprises a laminate including at least a coating layer, a base material layer, an adhesive layer, a barrier layer and a sealant layer in this order, wherein the coating layer is a cured product of a resin composition containing a thermosetting resin and a curing accelerator, and the thermosetting resin is a benzoguanamine resin. ### Claim 2 (depends on 1) The battery packaging material according to claim 1, wherein the resin composition further contains a slipping agent. ### Claim 3 (depends on 2) The battery packaging material according to claim 2, wherein the slipping agent is a reactive slipping agent having 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin. ### Claim 4 (depends on 1) The battery packaging material according to claim 1, wherein the resin composition further contains a reactive slipping agent that is a block or graft polymer having 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin. ### Claim 5 (depends on 1) The battery packaging material according to claim 1, wherein the resin composition further contains reactive resin beads. ### Claim 6 (depends on 5) The battery packaging material according to claim 5, wherein the reactive resin beads are urethane resin beads or acrylic resin beads having a functional group. ### Claim 7 (depends on 5) The battery packaging material according to claim 5, wherein the reactive resin beads are contained in an amount of 0.1 to 30 parts by mass based on 100 parts by mass of the thermosetting resin. ### Claim 8 (depends on 5) The battery packaging material according to claim 5, wherein the refractive index of the reactive resin beads is 1.3 to 1.8. ### Claim 9 (depends on 1) The battery packaging material according to claim 1, wherein the curing accelerator is at least one selected from the group consisting of an amidine compound, a carbodiimide compound, a ketimine compound, a hydrazine compound, a sulfonium salt, a benzothiazolium salt and a tertiary amine compound. ### Claim 10 (depends on 1) The battery packaging material according to claim 1, wherein the barrier layer is a metal foil. ### Claim 11 (depends on 1) A battery comprising a battery element including at least a positive electrode, a negative electrode and an electrolyte that is stored in the battery packaging material according to claim 1. ### Claim 12 A method for producing a battery packaging material which comprises a laminate including a coating layer, a base material layer, an adhesive layer, a barrier layer and a sealant layer in this order, the method comprising: a first step of laminating a base material layer and a barrier layer with an adhesive layer interposed therebetween to form a laminate including the base material layer, the adhesive layer and the barrier layer laminated in this order; and a second step of laminating a sealant layer on the barrier layer of the laminate obtained in the first step, wherein: before the first step, after the first step and before the second step, or after the second step, a resin composition containing a thermosetting resin and a curing accelerator is applied to a surface of the base material layer on a side opposite to a surface thereof on which the adhesive layer is laminated, and the resin composition is heated and cured to form a coating layer; and the thermosetting resin is a benzoguanamine resin. ### Claim 13 (depends on 12) The method for producing a battery packaging material according to claim 12, wherein the resin composition further contains reactive resin beads. ### Claim 14 A battery packaging material which comprises a laminate including at least a coating layer, a base material layer, an adhesive layer, a barrier layer and a sealant layer in this order, wherein the coating layer is a cured product of a resin composition containing a thermosetting resin, a curing accelerator and a reactive slipping agent, and the reactive slipping agent is selected from the group consisting of (i) block polymers having 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin, (ii) fluororesins in which an acrylate is graft-polymerized, and (iii) silicone-modified resins in which silicone is graft-polymerized and which have 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin. ### Claim 15 (depends on 14) The battery packaging material according to claim 14, wherein the curing accelerator is at least one selected from the group consisting of an amidine compound, a carbodiimide compound, a ketimine compound, a hydrazine compound, a sulfonium salt, a benzothiazolium salt and a tertiary amine compound except triethylamine. ### Claim 16 (depends on 14) The battery packaging material according to claim 14, wherein the adhesive layer has a thickness of 2 to 50 μm. ### Claim 17 A method for producing a battery packaging material which comprises a laminate including a coating layer, a base material layer, an adhesive layer, a barrier layer and a sealant layer in this order, the method comprising: a first step of laminating a base material layer and a barrier layer with an adhesive layer interposed therebetween to form a laminate including the base material layer, the adhesive layer and the barrier layer laminated in this order; and a second step of laminating a sealant layer on the barrier layer of the laminate obtained in the first step, wherein: before the first step, after the first step and before the second step, or after the second step, a resin composition containing a thermosetting resin, a curing accelerator and a reactive slipping agent is applied to a surface of the base material layer on a side opposite to a surface thereof on which the adhesive layer is laminated, and the resin composition is heated and cured to form a coating layer; and the reactive slipping agent is selected from the group consisting of (i) block polymers having 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin, (ii) fluororesins in which an acrylate is graft-polymerized, and (iii) silicone-modified resins in which silicone is graft-polymerized and which have 1 to 3 functional groups that react with the thermosetting resin to be chemically bonded to the thermosetting resin.