Process for the preparation of violet dyestuffs of the triphenyl

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

1976-10-06

1977-12-13

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 1110

Patent

active

040628779

ABSTRACT:
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"-trihalogenotriphenylmethylhalide is reacted with phenyl- or naphthylamine which are substituted in the m- or p-position in a molar ratio of 1 to 1.5 at 110.degree. to 135.degree. 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.degree. to 190.degree. C. The dyestuffs so prepared are well suitable for printing paper and plastics and dyeing polyacrylonitrile fibers.

REFERENCES:
patent: 3184483 (1965-05-01), Quint et al.
patent: 3652602 (1972-03-01), Schafer et al.
patent: 3689495 (1972-09-01), Lohmann

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