Patent ID: 11929507
Assignee: ZEON CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. A binder composition for a non-aqueous secondary battery electrode comprising a binder and an organic solvent, wherein
the binder includes a particulate polymer A and a polymer B,
the polymer B has N-methyl-2-pyrrolidone insoluble content of 50 mass % or less,
the particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and includes a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %, and
the particulate polymer A includes a particulate polymer A1 having a volume-average particle diameter of D50A1 and a particulate polymer A2 having a volume-average particle diameter of D50A2, where D50A1 and D50A2 satisfy a formula: 550 nm≥D50A2≥300 nm , 300 nm >D50A1≥50 nm.