Process for the manufacture of cationic dyestuffs

Details Process for the manufacture of cationic dyestuffs Process for the manufacture of cationic dyestuffs

1971-02-26

1977-01-18

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 1D, 2602472B, 2602475FP, 260283CN, 260283S, 260287T, 260287P, 260288CE, 260288CF, 26032627, 2603765SF, 2603265B, 26032662, 2603269, C07D20990, C07D41306, C07D40106, C07D40110

Patent

active

040038980

ABSTRACT:
Process for the manufacture of dyestuffs of the general formula ##STR1## wherein R, R.sub.1, R.sub.2 represent an alkyl, cycloalkyl, aralkyl or aryl radical or R is alkyl bonded to the naphthalene ring or R.sub.1 is alkyl bonded to R.sub. 2 or bonded to the adjacent six-membered ring and X stands for an anion by condensation of naphtholactames with aromatic amines with the addition of phosphorus pentoxide.

REFERENCES:
patent: 3347865 (1967-10-01), Brack et al.
patent: 3853913 (1974-12-01), Brack et al.
patent: 3959310 (1976-05-01), Brack et al.

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