C.I. pigment yellow 155 and process for preparing the same, pigment composition and colorant composition containing the pigment, and use thereof as colorant

Patent metadata

Field	Value
Publication number	US-10513613-B2
Application number	US-201515524258-A
Country	US
Kind code	B2
Filing date	Oct 23, 2015
Priority date	Nov 4, 2014
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

The present invention provides C.I. Pigment Yellow 155 having a methanol wettability (MW value) of the pigment powder of 10% to 2%, each inclusive.

First claim

The invention claimed is:

1. Pigment Yellow 155 having a methanol wettability (MW) value as a powder within a range of 2% to 10%, a primary particle size, as measured by TEM, of 62 nm to 300 nm, and an aspect ratio of 1 to 10.

2. Pigment Yellow 155 as claimed in claim 1 , having a residual organic solvent content of less than 500 ppm.

3. Pigment Yellow 155 as claimed in claim 2 , having a residual organic solvent content of less than 100 ppm.

4. Pigment Yellow 155 as claimed in claim 2 , wherein the organic solvent is an alcohol having a boiling point of 95° C. or higher.

5. Pigment Yellow 155 as claimed in claim 4 , wherein the alcohol is a linear, branched or cyclic, saturated or unsaturated, monohydric or polyhydric alcohol having 3 or more carbon atoms.

6. Pigment Yellow 155 as claimed in claim 5 , wherein the alcohol is one or more selected from the group consisting of 1-propanol, 1-butanol, 2-butanol, isobutanol, 1-pentanol, 2-pentanol, 2-hexanol, 1-heptanol, 2-heptanol, ethylene glycol, and glycerin.

7. Pigment Yellow 155 as claimed in claim 4 , wherein the alcohol is a finishing solvent used during preparation of the Pigment Yellow 155.

8. An azo pigment composition comprising Pigment Yellow 155 as claimed in claim 1 , and a further color pigment and/or a yellow fluorescent dye.

9. A pigment composition as claimed in claim 8 , wherein the further color pigment is one or more selected from the group consisting of C.I. Pigment Yellow 74, C.I. Pigment Yellow 120, C.I. Pigment Yellow 151, C.I. Pigment Yellow 180, C.I. Pigment Yellow 185, C.I. Pigment Yellow 194, C.I. Pigment Yellow 198, C.I. Pigment Yellow 213, C.I. Pigment Yellow 214, and C.I. Pigment Yellow 217, and the yellow fluorescent dye is one or more selected from the group consisting of Solvent Yellow 33, Solvent Yellow 98, Solvent Yellow 131, Solvent Yellow 135, and Solvent Yellow 160:1.

10. A colorant composition comprising Pigment Yellow 155 as claimed in claim 1 , a polymer, and a wax.

11. A colorant composition comprising a pigment composition as claimed in claim 8 , a polymer, and a wax.

12. A colorant or an image formation composition comprising Pigment Yellow 155 as claimed in claim 1 .

13. A colorant or an image formation composition comprising Pigment Yellow 155 as claimed in claim 1 and a further color pigment and/or a yellow fluorescent dye.

Assignees

• Clariant Plastics & Coatings Ltd

Inventors

• Harada Daisuke
• Chino Tomohiro

Classifications

• C09B67/0055

  Mixtures of two or more disazo dyes · CPC title

• C09B67/0046

  Mixtures of two or more azo dyes · CPC title

• C09B67/0015 Primary

  of azoic pigments · CPC title

• C09D11/322

  Pigment inks · CPC title

• C09B33/153 Primary

  in which the coupling component is a bis-(aceto-acetyl amide) or a bis-(benzoyl-acetylamide) · CPC title