Dyestuffs for the dyeing of synthetic polyamides
AssigneeSandoz Ltd.
InventorsBansi L. Kaul, Angelos-Elie Vougioukas
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Abstract
Salts of ionic dyes with compounds which contain at least one ammonium, cycloammonium or immonium group and at least one aliphatic, cycloaliphatic or carbonyl radical-substituted aromatic group or containing a piperazine or piperidine group or a heteroaromatic group selected from those of the triazine, pyrimidine, quinazoline, quinoxaline, phthalazine or phthalimidine series or which contain at least two carboxylic acid groups, at least one amino group and at least one carboxylic acid group or at least one sulfonic acid group and one aliphatic, cycloaliphatic, monocyclic aromatic or heteroaromatic group are useful for dyeing synthetic materials, particularly synthetic polyamides in the mass. The obtained dyeings have exceptionally good wet fastness.
Claims15
A dye salt of the formula
- F.(A).sub.n,
- or a mixture of such salts, wherein
- F is the anion of an anionic azo dye,
- A is a cation containing one 2,2,6,6-tetramethylpiperidinum-4 group, one, two or three 2,2,6,6-tetramethylpiperidyl-4groups and at least one aliphatic, cycloaliphatic or carbonyl-subtituted aromatic group, and
- n is 1, 2, 3 or 4.
A dye salt of the formula
- F.(A).sub.n,
- or a mixture of such salts, wherein
- F is the anion of an anionic azo dye,
- A is a cation derived from 2,4-bis-(2',2',6',6'-tetramethylpiperidyl-4'-amino)-6-chlorotriazine, 2,4,6-tri-(2,',2',6',6'-tetramethylpiperidyl-4'-amino)triazine, bis-(2',2',6',6'-tetramethylpiperidyl-4'-aminocarbonyl-para-phenylene)tere phthalic acid diamide, bis-(2',2',6',6'-tetramethylpiperidyl-4'-)terephthalic acid diamide, 2,4-bis-(2',2',6',6'-tetramethylpiperidyl-4'-amino)quinazoline, 2,3-bis-(2',2',6',6'-tetramethylpiperidyl-4'-amino)quinazoline, 1,4-bis-(2,',2',6',6'-tetramethylpiperidyl-4'-amino)phthalazine, 2-chloro-4,6-bis-2', 2', 6', 6'-tetramethylpiperidyl-4'-amino)pyrimidine, 2,5-dichloro-4,6-bis-(2',2',6',6'-tetramethylipiperidyl-4'-amino)pyrimidin e, 2-fluoro-5-chloro-4,6-bis-(2',2',6',6'-tetramethylpiperidyl-4'-amino)pyrim idine, 2,4,6-tri-(2',2',6',6'-tetramethylpoperidyl-4'-amino)pyrimidine, 2,4,6-tri-(2',2',6',6'-tetramethylpiperidyl-4'-amino)-5-chloropyrimidine, ##STR8## wherein each R.sub.1 is ##STR9## and n is 1, 2, 3 or 4.
Dependencies are inferred from the claim text.