Azomethine dye solutions

Details Azomethine dye solutions Azomethine dye solutions

1974-03-05

1976-08-10

Hoke, V. P.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

260164, C08J 320

Patent

active

039739031

ABSTRACT:
A process for making yellow, basic azomethine dyes for paper, leather and textiles, and concentrated, stable solutions thereof; the process being an improvement in the process of reacting an azo dye base precursor of the formula ##SPC1##
Wherein A is phenyl or substituted phenyl, with dimethyl sulfate in solution, and in the presence of an acid-binding agent,

REFERENCES:
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patent: 3331831 (1967-07-01), Raue et al.
patent: 3345355 (1967-10-01), Raue
patent: 3346322 (1967-10-01), Finkenauer et al.
patent: 3503699 (1970-03-01), Welleneuther et al.
patent: 3696089 (1972-10-01), Raue et al.
patent: 3718642 (1973-02-01), Lehment et al.
Inorganic Chemistry-Thorne et al., p. 770.
Chem. Berichte-vol. 59, 1926, pp. 2413 to 2416-Article by Rosenhauer et al.
The Handbook of Chemistry & Physics-40th Edition 1958-1959- Chemical Rubber Publishing Co. p. 1739.

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