Patent ID: 6756153
Filing Date: 2004-06-29
Classification: H01M,Y02E

Abstract:
A binder composition for an electrode of a lithium-ion secondary battery, which comprises particles of a polymer and an organic liquid dispersion medium having a boiling point in the range of 80Â° C. to 350Â° C. at normal pressure; the polymer particles being dispersed in the organic liquid dispersion medium, and said polymer comprising:(a) structural units derived from a monoethylenically unsaturated carboxylic acid ester monomer, and at least one kind of structural units selected from the group consisting of (b) structural units derived from a monoethylenically unsaturated carboxylic acid monomer, and (c) structural units derived from a conjugated diene monomer; the ratio of structural units (a)/{structural units (b) plus structural units (c)} being in the range of 99/1 to 60/40 by weight, provided that the sum of structural units (a), structural units (b) and structural units (c) is 100; the sum of structural units (a), structural units (b) and structural units (c) being at least 80% by weight based on the weight of the total structural units of the polymer; and said polymer further comprising 0 to 5% by weight, based on the weight of the polymer, of structural units derived from a monoethylenically aromatic hydrocarbon monomer.