Azo pigments, and pigment dispersion, coloring composition and ink for inkjet recording containing the azo pigment
US8222410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is an azo pigment represented by the following general formula (1), a tautomer of the azo pigment, and a salt or a hydrate thereof:wherein Q represents the non-metallic atoms necessary to complete a 5- to 7-membered heterocyclic group, W represents an alkoxy group, an amino group, an alkyl group, or an aryl group, X1 and X2 each independently represents a hydrogen, an alkyl group, an acyl group, an alkylsulfonyl group, or an arylsulfonyl group, R1 represents a hydrogen or a substituent, R2 represents a heterocyclic group, n represents an integer of from 1 to 4 and the general formula (1) represents a dimer formed through Q, W, X1, X2, R1, or R2 when n=2, a trimer formed through Q, W, X1, X2, R1, or R2 when n=3, and a tetramer formed through Q, W, X1, X2, R1, or R2 when n=4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.