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US 5,177,195 AGranted
Disazo dyes
AssigneeImperial Chemical Industries PLC
InventorsPeter Gregory, Prahalad M. Mistry
Life of this patent
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Abstract
A compound which, in the free acid form, is of the Formula (1): ##STR1## wherein B is 3,4- or 3,5-dicarboxyphenyl. The compound is useful in the preparation of inks for ink jet printing of paper, on which it has high water-fastness and low bronzing.
Claims4
A compound which, in the free acid form, is of the formula:
- ##STR3## wherein B is 3,4- or 3,5-dicarboxyphenyl.
A compound according to any one of the preceeding claims in the form of an ammonium or mixed ammonium and alkali metal salt.
A compound according to any one of the preceeding claims in the form of the ammonium salt.
Dependencies are inferred from the claim text.