Laminated film and secondary battery comprising the same
AssigneeDai Nippon Printing Co., Ltd.
InventorsTakanori Yamashita, Masataka Okushita, Youichi Mochizuki
Life of this patent
Estimating the term…
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.
Claims7
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).
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).
Dependencies are inferred from the claim text.