• 专利标题:   Conductive pigment paste used for mixture paste, coating film, and battery electrode layer, comprises pigment dispersion resin, conductive pigment comprising conductive carbon, and solvent.
  • 专利号:   JP2022122391-A
  • 发明人:   ICHI Y, HINOHARA A
  • 专利权人:   KANSAI PAINT CO LTD
  • 国际专利分类:   C01B032/00, H01B001/00, H01B001/24, H01B005/14
  • 专利详细信息:   JP2022122391-A 23 Aug 2022 H01B-001/24 202276 Pages: 22 Japanese
  • 申请详细信息:   JP2022122391-A JP019585 10 Feb 2021
  • 优先权号:   JP019585

▎ 摘  要

NOVELTY - Conductive pigment paste comprises a pigment dispersion resin (A), a conductive pigment (B), and a solvent (C), where the component (B) contains conductive carbon (B-1) and conductive carbon (B-2), where the average primary particle size or average diameter of the conductive carbon (B-1) is X1, and the average primary particle size or average diameter of the conductive carbon (B-2) is X2, when X1≯ X2, the ratio of X1 and X2 between the two is 1.2-2.5, and both X1 and X2 are 100 nm or less, and the content ratio of component (B-1) and component (B-2) is 1/99-99/1. USE - The conductive pigment paste is useful for mixture paste, coating film, and battery electrode layer. ADVANTAGE - The conductive pigment has excellent pigment dispersibility and storage stability even at a high pigment concentration, and provides the coating film which is excellent in finishing properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a pigment dispersion method for the conductive pigment paste, involving dispersing the conductive pigment paste with substantially no media; a mixture paste comprising the conductive pigment paste, and at least one electrode active material; a coating film obtained by coating an object to be coated with the conductive pigment paste; and a battery electrode layer obtained by applying the mixture paste to a current collector.