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US 3,935,248 AGranted
Anthraquinone dyes
AssigneeImperial Chemical Industries PLC
InventorsJohn Stuart Manson, Denis Robert Annesley Ridyard
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Abstract
A water-soluble anthraquinone dye having the general formula: ##SPC1## Wherein Z represents an optionally substituted hydrocarbon residue carrying at least one half sulphuric acid ester or sulphonic acid group. The dyes are suitable for the coloration of polyamide textile materials. This is a continuation of application Ser. No. 243,857 filed Apr. 13, 1972, now abandoned.
Claims2
A water-soluble anthraquinone dye having the formula ##SPC11##
- wherein Z represents a member selected from the group consisting of (a) -X-OSO.sub.3 H wherein X represents alkylene containing 2 to 5 carbon atoms and ##EQU4## wherein V represents oxygen, sulphur, ethylimino or a direct link and X represents ethylene.
Dependencies are inferred from the claim text.