Binder for a lithium ion secondary cell electrode contains a polymer having structural units derived from 1,3-butadiene. The content of 1,2-vinyl structures of the polymer in the binder is 2-25 mol%. Independent claims are also included for the following: ...

A binder composition comprising a polymer dispersed in a liquid dispersion medium, wherein the polymer comprises structural units represented by the following formula: wherein R is hydrogen, C1-4 alkyl group, or halogen, R is C1-20 alkyl group or C6-30 ary...

A gelating agent for an alkaline cell is a cross-linked polymer (A) comprising (meth)acrylic acid and/or its alkali metal salt as a main constituent monomer unit and obtained by an aqueous solution polymerization or a reversed phase suspension polymerizati...