US 4,051,116 AGranted

Assymmetrical 1:2 cobalt complexes of metallizable monoazo compounds having one sulfo group per complex

AssigneeSandoz Ltd.

InventorJacky Dore

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Abstract

Complexes of the formula ##STR1## wherein R.sub.1 is hydrocarbyl or substituted hydrocarbyl, EACH OF R.sub.2 and R.sub.3 is independently hydrogen, lower alkyl or substituted lower alkyl, Each of X.sub.1 and X.sub.2 is independently halo, nitro, alkyl, substituted alkyl, alkoxy or substituted alkoxy, M.sup.+ is a cation, e.g., lithium, sodium, potassium or ammonium, and m is 0 or 1, n is 0 or 1, and p is 0 or 1, With the proviso that the sum of m, n and p is 1, and derivatives thereof wherein Ring A is substituted. These complexes are good dyes for nautral and synthetic polyamide fibers (e.g., wool, silk and Nylon) as well as for leather and light metals (e.g., aluminum)... The shades of the dyeings range from olive to yellowish-green to khaki-brown. The dyeings have notable fastness to light, wet treatments, rubbing and pressing and stability to alkalis and acids and satisfactory dischargeability. The dyes build-up on polyamides from neutral medium.

Claims20

Dependent claims

A complex of the formula ##STR6## wherein R.sub.1 is alkyl of 1 to 12 carbon atoms, substituted alkyl wherein the alkyl chain has 1 to 12 carbon atoms and each substituent is independently halo, cyano or lower alkoxy, cyclohexyl, phenyl or substituted phenyl wherein each substituent is independently halo, lower alkyl, lower alkoxy, cyano, carboxy or lower alkoxy carbonyl,

each of R.sub.2 and R.sub.3 is independently hydrogen, lower alkyl or substituted lower alkyl wherein each substituent is independently halo, hydroxy or lower alkoxy,
each of X.sub.1 and X.sub.2 is independently halo, nitro, trifluoromethyl, alkyl of 1 to 6 carbon atoms, substituted alkyl, alkoxy of 1 to 6 carbon atoms or substituted alkoxy, wherein each alkyl chain of substituted alkyl and alkoxy chain of substituted alkoxy independently has 1 to 6 carbon atoms and each substituent is independently halo, trifluoromethyl or cyano,
M.sup.30 is lithium, sodium, potassium or ammonium,
m is 0 or 1,
n is 0 or 1, and
p is 0 or 1,
with the proviso that the sum of m, n and p is 1, wherein each halo is independently chloro or bromo.

4 more elements

Dependencies are inferred from the claim text.