Compound having bisazo dye skeleton, pigment composition containing the same, pigment dispersion, ink, and color filter resist composition

Patent metadata

Field	Value
Publication number	US-9249308-B2
Application number	US-201214357196-A
Country	US
Kind code	B2
Filing date	Nov 8, 2012
Priority date	Nov 10, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A compound having a bisazo moiety and a polyester moiety is provided. The compound can be provided as a pigment dispersant to improve the dispersion of an azo pigment in a water-insoluble solvent.

First claim

The invention claimed is:

1. A compound, comprising: a polyester moiety; and a bisazo structure moiety having the following formula (1) or (2):

wherein R 1 to R 4 independently denote a hydrogen atom or a halogen atom,
R 5 and R 6 independently denote an alkyl group having 1 to 6 carbon atoms or a phenyl group,
R 7 to R 11 independently denote a hydrogen atom, a COOR 12 group, or a CONR 13 R 14 group, provided that at least one of R 7 to R 11 denotes the COOR 12 group or the CONR 13 R 14 group,
R 12 to R 14 independently denote a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and
L 1 denotes a divalent linking group to be bonded to the polyester moiety.

2. The compound according to claim 1 , wherein R 5 and R 6 denote a methyl group.

3. The compound according to claim 1 , wherein R 7 and R 10 denote COOR 12 , and R 8 , R 9 , and R 11 denote a hydrogen atom.

4. The compound according to claim 1 , wherein L 1 denotes a linking group having a carboxylate bond, a carboxylic acid amide bond, or a sulfonate bond.

5. The compound according to claim 1 , wherein the compound has the bisazo structure moiety having the formula (1), and the bisazo structure moiety having the formula (1) has the following formula (7).

6. A pigment composition, comprising: the compound according to claim 1 ; and an azo pigment.

7. The pigment composition according to claim 6 , wherein the azo pigment has the following formula (8).

8. A pigment dispersion, comprising: the compound according to claim 1 ; an azo pigment; and a water-insoluble solvent.

9. The pigment dispersion according to claim 8 , wherein the azo pigment has the following formula (8).

10. An ink, comprising the pigment dispersion according to claim 8 .

11. A color filter resist composition, comprising: the pigment dispersion according to claim 8 ; and a binder resin.

Assignees

• Canon Kk

Inventors

• Hasegawa Yuki
• Murai Yasuaki
• Tanaka Masatake
• Toyoda Takayuki
• Kawamura Masashi
• Hasegawa Waka
• Hirose Masashi

Classifications

• C09D11/322

  Pigment inks · CPC title

• C09B69/106 Primary

  containing an azo dye · CPC title

• C09D11/037

  characterised by the pigment · CPC title

• C09B67/0041

  mixtures containing one azo dye · CPC title

• G03F7/105

  having substances, e.g. indicators, for forming visible images · CPC title