Patent ID: 9257239
Filing Date: 2016-02-09
CPC Classification: C08L,H01G,H01M,Y02E

Claim Text:
1. A binder composition for electrode, comprising polymer particles containing (a) an ethylenic unsaturated carboxylic ester compound and (b) an ethylenic unsaturated sulfonic acid compound at a (a)/(b) mass ratio of (98 to 91)/(2 to 9) in a total (a) and (b) amount of 70 mass % or more, based on the monomeric raw materials, wherein the ethylenic unsaturated carboxylic ester compound (a) contains an ethylenic unsaturated carboxylic ester compound having one or more hydroxyl groups in the alcohol region (a1) and the content of the compound (a1) is 1 to 9 mass % on the total amount of the raw monomers, and wherein the ethylenic unsaturated carboxylic ester compound (a) contains an ethylenic unsaturated carboxylic ester compound having multiple (meth)acrylic groups and/or (meth)allylic groups (a2) and the content of the compound (a2) is 1 to 10 mass % based on the total amount of the raw monomers.