| abstract |
It is a binder composition containing a binder containing a particulate polymer A and a soluble polymer B, and an organic solvent. Here, particulate polymer A contains 1.0 mass% or more and 10.0 mass% or less of ethylenic unsaturated acid monomer units, and 30.0 mass% or more and 98.0 mass% or less of (meth)acrylic acid ester monomer units. In addition, the particulate polymer A contains two types of particulate polymers A1 and A2 having different volume average particle diameters, and their volume average particle diameters D50 A1 and D50 A2 satisfy the formula: D50 A2 > D50 A1 ≥ 50 nm. |