High strength monoazo yellow pigment

Details High strength monoazo yellow pigment High strength monoazo yellow pigment

C - Chemistry, Metallurgy

09

B

C09B 29/50 (2006.01) C08K 5/42 (2006.01) C09B 29/03 (2006.01) C09B 67/22 (2006.01) C09D 7/12 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2391284

Disclosed is a yellow monoazo pigment which is obtained by diazotization of anthranilic acid, coupling of the diazonium compound with 1-(3'-sulphophenyl)-3-methyl-5-pyrazolone and subsequent laking of the coupling product to a strontium salt. The pigment is characterized by formula (I). The new pigment has excellent heat stability and bleed fastness and very high color strength. It is suitable for pigmenting of plastics, inks and coatings, and particularly suitable for pigmenting of plastics.

L'invention concerne un pigment mono-azo jaune qui est obtenu par diazotation d'acide anthranilique, le couplage d'un composé de diazonium avec 1-(3'-sulphophényl)-3-méthyl-5-pyrazolone et le laquage subséquent du produit du couplage à un sel de strontium. Le pigment est caractérisé par la formule (I). Le nouveau pigment présente une excellente stabilité thermique, une rapidité de dégorgement et une résistance de couleur très élevée. Ledit pigment est approprié à la pigmentation de plastiques, encres et revêtements, et est particulièrement adéquat à la pigmentation des plastiques.

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