Patent ID: 6444355
Filing Date: 2002-09-03
Classification: H01M,Y02E,Y02P

Abstract:
An adhesive for battery used for adhering an electrode to a separator, comprising a mixture of(1) at least one organic vinyl monomer having two or more vinyl groups per molecule, (2) a volatile organic solvent, (3) a reaction catalyst, selected from azobisisobutyronitrile, benzoyl peroxide and lauroyl peroxide, (4) a thermoplastic resin selected from the group consisting of polyacrylic esters and polymethacrylic esters, and (5) at least one organic vinyl monomer containing one vinyl group per molecule selected from the group consisting of methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, isobornyl methacrylate, tetrahydrofurfuryl methacrylate, styrene, vinyl chloride and acrylonitrile, wherein said adhesive has a property that it becomes porous when heated, whereby said at least one organic vinyl monomer having two or more vinyl groups per molecule undergoes crosslinked polymerization, and said volatile organic solvent is evaporated off, and wherein said thermoplastic resin is present in an adhesive-strength increasing amount.