Conductive material paste for all-solid-state secondary battery electrode

A conductive material paste for an all-solid-state secondary battery electrode comprising:

• a conductive carbon material;
• a polymer including a butyl acrylate monomer unit in a proportion of not less than 25 mass % and not more than 85 mass %;
• and an organic solvent having a solubility parameter (SP value) of not less than 8.0 (cal/cm3)1/2 and not more than 10.0 (cal/cm3)1/2,
• wherein an amount of the conductive carbon material among 100 parts by mass of solid content in the conductive material paste is more than 10 parts by mass, and 95 parts by mass or less,
• a solid content concentration of the conductive material paste is 5 mass % or more, and 20 mass % or less, and
• the polymer further includes an α,β-unsaturated nitrile monomer unit constituting a proportion of not less than 4 mass % and not more than 20 mass % in the polymer.