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US 4,111,929 AGranted
Tetrahydroquinoline azo triazole dyestuffs
AssigneeImperial Chemical Industries PLC
InventorDavid Melville Fawkes
Life of this patent
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Abstract
Azo dyestuffs of the formula: ##STR1## wherein R is hydrogen, methyl or phenyl, R.sup.1 is methyl, ethyl or benzyl, R.sup.2 is methyl, ethyl, methoxy or chloro, n is 0 or 1 and when n is 1, R.sup.2 is in the 7-position of the tetrahydroquinoline ring and R.sup.3 is straight chain butyl, pentyl or hexyl and X is an anion; a process for the manufacture of such dyestuffs which are useful for the coloration of synthetic polymeric materials such as polyacrylonitrile and blends thereof.
Claims3
An azo dyestuff of the formula:
- ##STR9## wherein R is hydrogen, methyl or phenyl, R.sup.1 is methyl, ethyl or benzyl, R.sup.2 is methyl, ethyl, methoxy or chloro, n is 0 or 1 and when n is 1, R.sup.2 is in the 7- position of the tetrahydroquinoline ring and R.sup.3 is straight chain butyl, pentyl or hexyl and X is an anion.
Dependencies are inferred from the claim text.