Patent ID: 9054382
Filing Date: 2015-06-09
Classification: H01M,Y02E

Abstract:
1. A binder for secondary battery electrodes comprising polymer particles obtained by polymerizing (a) a (meth)acrylic acid ester monomer; (b) at least one monomer selected from the group consisting of an acrylate monomer, a vinyl monomer and a nitrile monomer; and (c) a (meth)acrylamide monomer and a unsaturated monocarbonic acid monomer, with two or more cross-linking agents with different molecular weights, wherein the cross-linking agents comprise the cross-linking agent having a low molecular weight not lower than 50 and lower than 250 and the cross-linking agent having a high molecular weight not lower than 250 and lower than 20,000, and are present at a mix ratio of cross-linking agent having low molecular weight:cross-linking agent having high molecular weight, on a weight basis from 1:0.1 to 1:20.