Aqueous dispersions of primary aromatic amines, their use for the production of water-insoluble azo dyes on the fiber and the use of an anionic surfactant for the manufacture of said dispersions

Claim 2

An aqueous dispersion of a primary aromatic amine which does not contain a carboxylic acid or a sulfonic acid group, containing as a dispersing agent a water-soluble condensation product with one or several radicals of oxyalkylated hydroxy and/or carboxygroups containing aromatic compounds which oxalkylated aromatic radicals are linked with one another by methylene bridges either directly or via radicals of aromatic compounds, and containing an anionic surfactant.

Claim 3

An aqueous dispersion according to claim 1, wherein the aromatic amine is a compound of the formula ##STR3## in which R 1 is hydrogen, halogen, alkoxy of from 1 to 6 carbon atoms, alkyl of from 1 to 6 carbon atoms, sulfonic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, carboxylic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, or is an acylamino group of a lower aliphatic or aromatic carboxylic acid, or is cyano, phenylamino, or is phenylazo unsubstituted or substituted by substituents selected from the group of nitro, halogen, alkoxy having from 1 to 6 carbon atoms, alkyl having from 1 to 6 carbon atoms, sulfonic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, carboxylic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, acylamino of a lower aliphatic carboxylic acid or aromatic carboxylic acid, cyano, amino and phenylamino, or is naphthylazo unsubstituted or substituted by substituents selected from the group of nitro, halogen, alkoxy having from 1 to 6 carbon atoms, alkyl having from 1 to 6 carbon atoms, sulfonic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, carboxylic acid amide unsubstituted or mono- or disubstituted by alkyl of from 1 to 4 carbon atoms, acylamino of a lower aliphatic carboxylic acid or aromatic carboxylic acid, cyano, amino and phenylamino, and in which R 2 is hydrogen, halogen, nitro, alkoxy of from 1 to 6 carbon atoms or alkyl of from 1 to 6 carbon atoms.

Claim 4

A dispersion according to claim 1 wherein the dispersing agent is a condensation product obtained by reaction of a phenolic, optionally etherified, aromatic compound or of an aromatic hydrocarbon capable of reacting with formaldehyde, with formaldehyde and a water-soluble addition product of 8 to 50 mols of alkylene oxide on 1 mol of an aromatic, phenolic hydroxy group-containing compound in the presence of an acid catalyst and optionally with subsequent alkylation.

Claim 5

An aqueous dispersion according to claim 3 wherein the dispersing agent is a condensation product of a phenol-compound, of a phenol polyglycol ether and of formaldehyde.

Claim 6

An aqueous dispersion according to claim 4, wherein free hydroxy groups in the condensation product of a phenol, of a phenol polyglycol ether and of formaldehyde are wholly or partially alkylated.

Claim 7

An aqueous dispersion according to claim 5, wherein phenolic radicals of the condensation product are substituted by methyl or ethyl.

Claim 8

An aqueous dispersion according to claim 1 wherein the dispersing agent is a compound of the formula in which R is hydrogen, methyl or ethyl and n is an integer of from 8 to 50.

Claim 9

An aqueous dispersion according to claim 1, wherein the anionic surfactant has at least two sulfo groups in the molecule.

Claim 10

An aqueous dispersion according to claim 1 or 8, wherein the anionic surfactant is a lignin sulfonate or a sulfo groups-containing phenol- or cresol-formaldehyde resin.

Claim 11

An aqueous dispersion according to claim 1 containing additionally a high-molecular weight polyglycol.

Claim 12

A dispersion according to claim 10 wherein the polyglycol is a polyethylene glycol having a molecular weight of from 4,000 to 100,000.

Claim 13

A dispersion according to claim 1 or 11 containing additionally a polyhydric alcohol.