Azo compound, azo pigment, dispersion containing the azo compound or azo pigment, coloring composition, ink for inkjet recording, ink tank for inkjet recording, inkjet recording method and recorded material
US8083810B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
To provide an azo pigment excellent in coloristic characteristics such as tinctorial strength and hue and at the same time, excellent in the durability such as light fastness and ozone resistance, a pigment dispersion containing the azo pigment, a coloring composition, and an ink for inkjet recording. An azo pigment represented by the following formula (1), its tautomer, or a salt or hydrate thereof:(wherein R1, R2, R3, Y, Z and G each independently represents a hydrogen atom or a substituent; n represents and integer of 2 to 4; and the formula represents a dimer through R1, R2, R3, Y, Z or G when n is 2, represents a trimer through R1, R2, R3, Y, Z or G when n is 3, and represents a tetramer through R1, R2, R3, Y, Z or G when n is 4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.