Black pigment dispersion

The invention provides a black pigment dispersion. When a pigment dispersion liquid containing perylene black is prepared, the dispersion liquid is prevented from gelling or the viscosity of the dispersion liquid is prevented from changing during storage, and the dispersibility is improved. The blac...

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Bibliographic Details
Main Author NOZAWA TAKAHIRO
Format Patent
LanguageChinese
English
Published 23.12.2022
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:The invention provides a black pigment dispersion. When a pigment dispersion liquid containing perylene black is prepared, the dispersion liquid is prevented from gelling or the viscosity of the dispersion liquid is prevented from changing during storage, and the dispersibility is improved. The black pigment dispersion comprises perylene black, any one derivative represented by chemical formulas 1-3, and a dispersant which is a copolymer composed of a monomer A having a structure represented by chemical formula 4, a monomer B having a basic functional group, and a monomer C capable of polymerizing with the monomer A and the monomer B, the monomer B is a monomer having a nitrogen-containing aromatic heterocyclic group as a basic functional group and/or a monomer having a structure of a chemical formula 5, and the amine value of the dispersant is 120 mgKOH/g to 200 mgKOH/g. And the content of perylene black is 5-25% by mass. The average particle diameter of perylene black is preferably adjusted to 200 nm or les
Bibliography:Application Number: CN202210697302