The physical properties of organic pigments and product information is how much you know
The molecular structure of water containing azo group (-N = N-) insoluble organic compound in an organic pigment is most varieties and the largest output category. Azo pigment is an aromatic amine or heteroaromatic amine by diazotization of the diazo component obtained by re-acetylation with aromatic amines, 2-naphthol, pyrazolone, 2-hydroxy-3-naphthoic acid or 2-hydroxy -3- naphthoyl aromatic amines by coupling a coupling component, a water-insoluble precipitate is generated, i.e., general azo pigments. The synthesis method is basically the same with azo dyes, but the latter is water soluble.
Commonly used organic pigments azo pigments generally orange, yellow and red pigments such as: Permanent Orange RN (. C.I Pigment Orange 5), Golden Red (C.I. Pigment Red 21), benzidine yellow G (. C.I Pigment Yellow 12). In order to improve the performance pigments Light, heat resistance, organic solvent, an aromatic diamine by condensation of the two molecules become macromolecules. Such pigments made of macromolecules called pigment or condensed azo pigments such as: macromolecules orange 4R (. C.I Pigment Orange 31), macromolecules red R (. C.I Pigment Red 166).