Anthraquinone-azo dyes

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 29/01 (2006.01) C09B 35/031 (2006.01) C09B 35/039 (2006.01) C09B 69/10 (2006.01) G02B 5/20 (2006.01)

Patent

CA 2483471

The present invention relates to an azo dye of formula I, II or III: (formula I, II or III); wherein R1 and R2 are each independently of the other one or more divalent groups selected from alkylene, arylene, aralkylene and cycloalkylene, which may be interrupted by -0-, -S-, -NH-, -NR8-, -COO-, -CONH- or -CONR9-, wherein R8 and R9 are alkyl or aryl, X is -O- or -NH-, R3 is -CN or -CONH2, R4 is methyl or trifluoromethyl and R5, R6, R7 and R8 are each independently of the others hydrogen, halogen or -CN, to a process for the preparation thereof and to the use thereof in a method of producing mass- coloured plastics or polymeric colour particles.

La présente invention concerne un colorant azoïque de formule I, II ou III dans lesquelles: R¿1? et R¿2? représentent chacun indépendamment un ou plusieurs groupes divalents choisis parmi alkylène, arylène, aralkylène et cycloalkylène, qui peuvent être interrompus par -0-, -S-, -NH-, -NR¿8?-, -COO-, -CONH- ou -CONR¿9?- où R¿8? et R¿9? sont alkyle or aryle; X est -O- ou -NH-; R¿3? est -CN ou -CONH¿2?; R¿4? est méthyle ou trifluorométhyle; et R¿5?, R¿6?, R¿7? et R¿8? représentent chacun indépendamment hydrogène, halogène ou -CN. L'invention a également pour objet un procédé pour préparer ledit colorant et son utilisation dans le cadre d'un procédé de production de plastique teint dans la masse ou de particules polymères colorées.

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