CONDUCTIVE PIGMENT PASTE, COATING MATERIAL AND COATING FILM

WIPO Patent Application WO/2022/172847

A1

The present invention addresses the problem of providing: a conductive pigment paste which exhibits excellent pigment dispersibility and excellent storage stability even in cases where the pigment concentration is high; a coating material; and a coating film which exhibits excellent finish properties and the like. The present invention provides, as a means for solving the problem, a conductive pigment paste which contains (A) a pigment dispersion resin, (B) a conductive pigment, (C) a solvent and (D) a fluororesin, wherein: the pigment dispersion resin (A) has at least one a polar functional group that is selected from the group consisting of an amide group, an imide group, a hydroxyl group, a carboxyl group, a sulfonic acid group, a phosphoric acid group, a silanol group, an amino group and a cyano group; the polar functional group concentration in the pigment dispersion resin (A) is from 10 mmol/g to 23 mmol/g; the conductive pigment (B) has an average primary particle diameter of 10 nm to 80 nm and a BET specific surface area of 250 m2/g or less; the solubility parameter δA of the pigment dispersion resin (A) and the solubility parameter δC of the solvent (C) satisfy the relational expression |δA - δC| < 2.0; and the viscosity at a shear rate of 0.1 s-1 is less than 5,000 mPa·s.

ICHI YUTARO (JP)
FURUSAWA SATORU (JP)

PCT/JP2022/004186

August 18, 2022

February 03, 2022

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KANSAI PAINT CO LTD (JP)

C09D5/24; C09C1/44; C09D7/61; C09D17/00; C09D201/00; H01B1/24

WO2014132809A1

2014-09-04

JP2017165923A	2017-09-21
JP2019061916A	2019-04-18
JP2016134217A	2016-07-25
JP2018045820A	2018-03-22
JP2016044275A	2016-04-04

YAMADA, Yasuyuki et al. (JP)

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