# US 7,745,045 B2 · Laminated film and secondary battery comprising the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,045 B2 - Document ID: US7745045B2 - Status: Granted - Kind: B2 - Application number: 11/258,951 - Filed: 2005-10-27 - Published: 2006-05-04 - Granted: 2010-06-29 - Earliest claimed: 2004-10-29 - Assignees: Dai Nippon Printing Co., Ltd. - Inventors: Takanori Yamashita; Masataka Okushita; Youichi Mochizuki - Web page: https://patentgrep.com/patent/US7745045B2 ## CPC - B32B 15/08: of synthetic resin - B32B 15/085: comprising polyolefins - B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)} - B32B 27/08: of synthetic resin - B32B 27/18: characterised by the use of special additives - B32B 27/26: using curing agents - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE} - B32B 27/42: comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines - H01M 50/119: Metals - H01M 50/121: Organic material - H01M 50/129: with two or more layers of only organic material - H01M 50/133: Thickness - B32B 2250/05: 5 or more layers - B32B 2264/02: Synthetic macromolecular particles - B32B 2307/20: having particular electrical or magnetic properties, e.g. piezoelectric - B32B 2307/5825: Tear resistant - B32B 2307/714: Inert, i.e. inert to chemical degradation, corrosion - B32B 2307/7246: Water vapor barrier - B32B 2439/40: Closed containers - B32B 2457/10: Batteries - H01M 50/124: having a layered structure - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 428/31692: Next to addition polymer from unsaturated monomers - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention relates to a layered product in which at least an aluminum foil, a chemical conversion layer, an olefinic resin layer having an adhesive property to metal and a thermal bonding resin layer are successively laminated on a substrate layer. A fluororesin layer, formed by a fluorine-containing copolymer having a crosslinking group and a curing agent that reacts with the crosslinking group, is formed between the olefinic resin layer and the thermal bonding resin layer. ## Claims ### Claim 1 A layered product comprising: at least a substrate layer, an aluminum foil, a chemical conversion layer, an olefinic resin layer having an adhesive property to metal, and a thermal bonding resin layer that are successively laminated, wherein a fluororesin layer, formed by a fluorine-containing copolymer having a crosslinking group and a curing agent that reacts with the crosslinking group, is interposed between the olefinic resin layer and the thermal bonding resin layer wherein the fluorine-containing copolymer contains as a monomer component, a fluoro-olefin monomer (1) represented by the formula; CF2═CFX in which X indicates a fluorine atom, a chlorine atom, a hydrogen atom or a trifluoromethyl group, a hydroxyl-group-containing monomer (2) represented by the formula: CH2═CHR1 in which R1 indicates —OR2 or —CH2OR2 (R2 is an alkyl group having a hydroxyl-group) serving as a crosslinking group-containing monomer, a β-methyl-substituted α-olefin monomer (3) represented by the formula: CH2═CR(CH3) in which R indicates an alkyl group having 1 to 8 carbon atoms, a vinyl ether monomer (4) represented by the formula: CHR3═CHOR3(CH3) in which R3 indicates an alkyl group having 1 to 8 carbon atoms, a monomer (5) represented by the formula: CH2═CHR3 in which R3 is —OR4 or —CH20R4 (R4 indicates an alkyl group having a carboxyl group), and a monomer (6) which has no crosslinking functional group and is copolymerizable with any of the monomers 1), 2), 3), 4) and 5). ### Claim 2 (depends on 1) The layered product according to claim 1, wherein the olefinic resin layer is an acid-modified polyolefinic resin. ### Claim 3 (depends on 1) The layered product according to claim 1, wherein the thermal bonding resin layer is a polyolefinic resin or an acid-modified polyolefinic resin. ### Claim 4 (depends on 1) The layered product according to claim 1, wherein the fluorine-containing copolymer contains at least a fluoro-olefin monomer and a hydroxyl-group-containing monomer as monomer components. ### Claim 5 (depends on 1) The layered product according to claim 1, wherein the curing agent is an organic polyisocyanate compound. ### Claim 6 (depends on 1) The layered product according to claim 1, wherein the chemical conversion layer is formed by a chemical conversion solution containing an aminated phenolic polymer, a trivalent chromium compound and a phosphorous compound. ### Claim 7 A secondary battery, in which a battery container is sealed with a plurality of leads, respectively joined to the positive electrode and the negative electrode of a battery main body, sticking out of the battery container, the battery container being made of a layered product formed by successively laminating at least a substrate layer, an aluminum foil, a chemical conversion layer, an olefinic resin layer having an adhesive property to metal and a thermal bonding resin layer, and a fluororesin layer, formed by a fluorine-containing copolymer having a crosslinking group and a curing agent that reacts with the crosslinking group, being interposed between the olefinic resin layer and the thermal bonding resin layer wherein the fluorine-containing copolymer contains as a monomer component, a fluoro-olefin monomer (1) represented by the formula; CF2 ═CFX in which X indicates a fluorine atom, a chlorine atom, a hydrogen atom or a trifluoromethyl group, a hydroxyl-group-containing monomer (2) represented by the formula: CH2═CHR1 in which R1 indicates —OR2 or —CH2OR2 (R2 is an alkyl group having a hydroxyl-group) serving as a crosslinking group-containing monomer, a β-methyl-substituted α-olefin monomer (3) represented by the formula: CH2═CR(CH3) in which R indicates an alkyl group having 1 to 8 carbon atoms, a vinyl ether monomer (4) represented by the formula: CHR3═CHOR3(CH3) in which R3 indicates an alkyl group having 1 to 8 carbon atoms, a monomer (5) represented by the formula: CH2═CHR3 which R3 is —OR4 or —CH20R4 (R4 indicates an alkyl group having a carboxyl group), and a monomer (6) which has no crosslinking functional group and is copolymerizable with any of the monomers 1), 2), 3), 4) and 5).