Patent ID: 11870076
Assignee: TOAGOSEI CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A binder for a non-aqueous electrolyte secondary battery electrode, comprising:
a crosslinked polymer having a carboxyl group or a salt thereof, wherein
the crosslinked polymer includes
a structural unit derived from an ethylenically unsaturated carboxylic acid monomer; and
a structural unit derived from a macromonomer having a linear structure of a straight chain and including at least one monomer selected from compounds represented by following formula (1):

[C1]

H2C═CR1−X  formula (1)

wherein in formula (1), R1 represents a methyl group; X represents C(═O)OR2; and R2 represents a straight chain or branched C1-C8 alkyl group or a C3-C8 alkyl group having an alicyclic structure,
wherein the macromonomer has 70 mass % or more of the monomer selected from compounds represented by the formula (1) and an ethylenically unsaturated group in the end or the intermediate segment of the molecular chain of the macromonomer and
wherein, the crosslinked polymer comprises 50% by mass or more and 99.5% by mass or less of the structural unit derived from the ethylenically unsaturated carboxylic acid monomer relative to the all structural units in the crosslinked polymer and 0.1% by mass or more and 50% by mass or less of the structural unit derived from the macromonomer relative to the all structural units in the crosslinked polymer.