AQUEOUS GREEN PIGMENT DISPERSIONS AND INKJET COMPOSITIONS
An aqueous organic pigment dispersion contains a green copper phthalocyanine pigment and an azo-coupled β-ketoamide pigment. It also includes an organic pigment dispersant at 40 weight % to 100 weight %, based on the sum of the weights of the organic pigments. The weight ratio of the green copper ph...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
18.01.2023
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Subjects | |
Online Access | Get full text |
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Summary: | An aqueous organic pigment dispersion contains a green copper phthalocyanine pigment and an azo-coupled β-ketoamide pigment. It also includes an organic pigment dispersant at 40 weight % to 100 weight %, based on the sum of the weights of the organic pigments. The weight ratio of the green copper phthalocyanine pigment to the azo-coupled β-ketoamide pigment is from 1 : 1 to 10: 1. The median particle diameter of each of the green copper phthalocyanine pigment and the azo- coupled β-ketoamide pigment is less than 85 nm. At least 95% of the total particles of each of the green copper phthalocyanine pigment and the azo-coupled β-ketoamide pigment have a particle diameter of less than 150 nm. This dispersion can be used to prepare aqueous green inkjet ink compositions that can be used in various inkjet printing methods. |
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Bibliography: | Application Number: EP20170716339 |