Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-08-19
1976-08-03
Ford, John M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2602498, 8 542, C07D25152
Patent
active
039728811
ABSTRACT:
Vat dyestuffs of the formula ##EQU1## wherein R represents alkyl with 1 to 4 carbon atoms, R.sub.1 and R.sub.2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A.sub.1 and A.sub.2 represents a vattable radical with 3 to 7 condensed rings are characterized by improved resistance to alkali and are suitable for dyeing and printing the most diverse materials, in particular fibers made from natural or regenerated cellulose.
REFERENCES:
patent: 3787406 (1974-01-01), Ulrich et al.
Almaula Prabodh I.
Ciba-Geigy Corporation
Ford John M.
Kolodny Joseph G.
McC. Roberts Edward
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