Monoazo pigments

Details Monoazo pigments Monoazo pigments

C - Chemistry, Metallurgy

09

B

C09B 29/50 (2006.01) C09B 63/00 (2006.01) C09B 69/04 (2006.01)

Patent

CA 2208742

An azo pyrazolone compound of formula (I), wherein Z represents a substituent selected from Cl, Br, F, NO2, SO2R, CO2R, NHSO2R1 and NHCOR1 in which R and R1 are hydrocarbyl groups and the sulphonic acid group in ring A is in the 3- or 4-position relative to the pyrazolyl group, said compound being in the form of a salt, and its use as a pigment.

Composé de pyrazolone azoïque répondant à la formule (I), dans laquelle Z représente un substituant choisi parmi Cl, Br, F, NO2, SO2R, CO2R, NHSO2R<1> et NHCOR<1>, où R et R<1> représentent des groupes hydrocarbyle et le groupe acide sulfonique dans le noyau A se situe en position 3 ou 4 par rapport au groupe pyrazolyle, ledit composé se présentant sous forme de sel; et son utilisation comme pigment.

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