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US 4,330,294 AGranted
Anthraquinone compounds and process for dyeing therewith
AssigneeSandoz Ltd.
InventorRoland Wald
Life of this patent
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Abstract
The present invention relates to compounds of formula ##STR1## in which R.sub.1 is an aliphatic or alicyclic hydrocarbon radical, R.sub.2 is hydrogen, halogen or C.sub.1-8 alkyl, M is hydrogen or an equivalent of a non-chromophoric cation and mixtures of such compounds with the corresponding ethers, which mixtures are useful as anionic dyestuffs.
Claims28
A mixture comprising at least one compound of formula Ia ##STR21## and at least one compound of formula Ib ##STR22## in which each R.sub.1 is an aliphatic or alicyclic hydrocarbon radical,
- each R.sub.2 is hydrogen, halogen or C.sub.1-8 alkyl,
- R.sub.3 is C.sub.1-4 alkyl, phenyl, chlorophenyl or tolyl,
- each M is hydrogen or an equivalent of a non-chromophoric cation,
- and the R.sub.1 's, R.sub.2 's and M's, respectively, are the same or different.
1 more element
Dependencies are inferred from the claim text.