Title: Hydrosoluble monoazoic cationic dyes and process for preparing same

Abstract: Hydrosoluble, cationic, azo dyes of the formula: ##SPC1## Wherein: R is an alkyl or aralkyl group; R' is an alkyl group having from 1 to 4 carbon atoms; R" is H, an alkyl group having from 1 to 4 carbon atoms or a halogen; R'" is an alkyl group having from 1 to 4 carbon atoms or a C.sub.1 -C.sub.4 alkyl group substituted by a halogen, cyano, hydroxy, alkoxy or acyloxy group; Y is a cyano, amido, acyloxy or carboalkoxy group; and X is an anion, are obtained by: A. diazotizing a 2-amino-6-alkoxybenzothiazole of the formula (II): ##SPC2## b. coupling the resultant diazo compound in an acid solution with a tertiary amine of the formula (III): ##SPC3## wherein R', R", R'" and Y are as defined above; and C. quaternizing the resultant dye.

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Inventors: Merlo, Fabrizio (Saronno (Varese), IT)
Battisti, Ruggero (Novara, IT)
Domenis, Danilo (Saronno (Varese), IT)

Application Number: 422352
Filing Date: 1973-12-06
Publication_date: 1976-01-13
Assignee: Montecatini Edison S.p.A. (Milan, IT); Aziende Colori Nazionali Affini Acna S.p.A. (Milan, IT)
Primary Class(es): 534/611 534/589, 534/640, 534/788, 558/394, 558/406
Other Classes:
US Patent Ref:

2864812	Dec, 1958	Bossard et al.	260/146.
3097198	Jul, 1963	Fishwick et al.	260/158.
3280101	Oct, 1966	Straley et al.	260/158.
3335125	Aug, 1967	Illy	260/158.
3342800	Sep, 1967	Towle et al.	260/158.
3405118	Oct, 1968	Sartori	260/158.
3442886	May, 1969	Dickey et al.	260/158.
3634389	Jan, 1972	Entschel et al.	260/158.
3709872	Jan, 1973	Koller	260/207.
3763140	Oct, 1973	Entschel et al.	260/158.
3816390	Jun, 1974	Weaver	260/158.

Other Refs:
Primary Examiner: Higel, Floyd D.
Assistant Examiner:
Attorney: Hubbell, Cohen & Stiefel