Black dye composition and black ink composition for textile digital printing
AssigneeEverlight USA, Inc.
InventorsChuan-Hsi Lee, Tzu-Kwei Sun, Reng-Fang Lin, Hsiao-San Chen
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Abstract
The present invention relates to a black dye composition, comprising: (a) at least one azo dye of the following formula (I), (b) at least one azo dye of the following formula (II) or (III), wherein R1, R2, and R3 are defined the same as the specification. The present invention also relates to a black ink composition afforded from the aforementioned black dye composition. The black ink composition of the present invention for textile digital printing exhibits the properties of excellent color depth, fixation, stability of storage, stability and accuracy of printing for long time, and improves the issue of nozzle cloggage.
Claims15
A black dye composition for textile digital printing, comprising:
- (a) at least one azo dye of the following formula (I),
- wherein R1 is —SO2CH2CH2OSO3H, —SO2CH═CH2, or
- R2 and R3 each independently is —CH3, —OCH3, or H;
- and
- (b) at least one azo dye of the following formula (II),
- wherein R1, R2, and R3 are defined as above, the content of the component (a) is 50˜97% by weight, and the content of component (b) is 50˜3% by weight.
Dependencies are inferred from the claim text.