▎ 摘　　要

NOVELTY - Method for manufacturing a conductive pigment paste, includes a step in which a paste containing a pigment dispersion resin (A), a conductive pigment (B) and a solvent (C) is dispersed by at least one disperser selected from bead mills, homogenizers, ultrasonic dispersers, kneaders, extruders, and planetary mixers. The pigment dispersion resin (A) has at least one polar functional group selected from amide groups, imide groups, ether groups, hydroxyl groups, carboxyl groups, sulfonate groups, phosphate groups, silanol groups, and amino groups. The polar functional group concentration in the pigment dispersion resin (A) is 9-23 mmol/g. The conductive pigment (B) contains carbon nanotubes (B1) and/or a conductive carbon (B2) having an average primary particle size of 10-80 nm. The modulus of the difference between the solubility parameter δ A of the pigment dispersion resin (A) and the solubility parameter δ C of the solvent (C) of less than 2.1. USE - The method is used for manufacturing a conductive pigment paste for producing an electrode mixture paste and for producing a battery electrode layer (all claimed). The conductive pigment paste is used for forming a coating film for coating as a battery electrode layer to a current collector (preferably aluminum current collector). The electrode layer is used as a positive electrode or a negative electrode of a lithium ion battery. ADVANTAGE - The pigment paste is excellent in pigment dispersibility and storage stability even at a high pigment concentration, and produces a battery electrode layer having excellent battery performance. The conductive pigment paste has excellent pigment dispersibility and storage stability even at high pigment concentrations and/or high viscosities, and sufficiently reduces the viscosity of the paste with a relatively small amount of dispersion resin. The coating film is excellent in electrical conductivity, and battery performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a method for producing an electrode mixture paste, comprising adding at least one electrode active material to the conductive pigment paste produced by the above method; and a method for producing a battery electrode layer obtained by applying the electrode mixture paste obtained by the above method to a current collector.