To provide an azo pigment and a pigment dispersion excellent in chromatic characteristics such as optical density and hue and also excellent in fastness such as light fastness.
There are provided azo pigments represented by general formula (1), tautomers thereof, and salts or hydrates thereof. In general formula (1), G is a hydrogen atom, an aliphatic group, an aryl group, a heterocyclic group, an acyl group, an aliphatic oxycarbonyl group, a carbamoyl group, or a sulfonyl group; R1 is an amino group or an aliphatic oxy group; R2 is a substituent; A is a group containing a heterocyclic 5-membered ring having 1-3 ring nitrogen atoms; m is an integer of 0-5; and n is an integer of 1-4, provided that when n=2, it is a dimer formed through R1, R2, A or G. when n=3, the formula is a trimer formed through R1, R2, A or G; and when n=4, it is a tetramer formed through R1, R2, A or G.
AZUMA MASAHIRO
TATEISHI KEIICHI
JPS63148267A | 1988-06-21 | |||
JPH0427959A | 1992-01-30 | |||
JPH0488349A | 1992-03-23 | |||
JP2003237240A | 2003-08-27 | |||
JP2003246148A | 2003-09-02 | |||
JPS63158561A | 1988-07-01 | |||
JPS63148267A | 1988-06-21 | |||
JPH0427959A | 1992-01-30 | |||
JPH0488349A | 1992-03-23 | |||
JP2003237240A | 2003-08-27 | |||
JP2003246148A | 2003-09-02 |
GB1336898B |
JPN6009051182; ANDREEVA,M.A. et al.: 'Syntheses based on dimethylpyrazoles. I. Synthesis of nitro- and amino-substituted 1,3- and 1,5-di' Zhurnal Obshchei Khimii Vol.50, No.9, 1980, p.2106-2109
JPN6009051190; POSKOCIL,J. et al.: 'Some new triazole dyes' Chemicky Prumysl Vol.32, No.6, 1982, p.300-307
JPN6009051180; 小松紀陸他: 'アミノイミダゾールからのアゾ染料' 工業化学雑誌 Vol.73, No.7, 1970, p.1694-1697
JPN6009051188; SEBE,I. et al.: 'Triazo heterocyclic disperse dyes' Revue Roumaine de Chimie Vol.41, No.11-12, 1996, p.971-977
JPN6009051182; ANDREEVA,M.A. et al.: 'Syntheses based on dimethylpyrazoles. I. Synthesis of nitro- and amino-substituted 1,3- and 1,5-di' Zhurnal Obshchei Khimii Vol.50, No.9, 1980, p.2106-2109
Kiyozumi Yazawa
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