Process for the preparation of violet dyestuffs of the...

Details Process for the preparation of violet dyestuffs of the... Process for the preparation of violet dyestuffs of the...

C - Chemistry, Metallurgy

09

B

260/396.5

C09B 11/20 (2006.01)

Patent

CA 1068290

PROCESS FOR THE PREPARATION OF VIOLET DYESTUFFS OF THE TRIPHENYLMETHANE SERIES Abstract of the disclosure: A novel process had been found for preparing novel violet dyestuffs of the triphenylmethane series which is characterized by that an aluminum chloride or borotrifluoride or iron-III- chloride-complex compound of a 4,4',4"-trihalogenotriphenylmethyl- halide is reacted with phenyl- or naphthylamine which are substituted in the m- oder p-position in a molar ratio of 1 to 1.5 at 110 to 135°C and in an inert organic solvent, and the mono-phenyl or -naphthylamino- substituted halide formed is reacted with 5 - 20 mols of an ortho-substituted phenyl- or naphthylamine at 150 to 190°C. The dyestuffs so prepared are well suitable for printing paper and plastics and dyeing polyacryloni- trile fibres.

263074

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