Black dye composition and black ink composition for textile digital printing
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United States of America Patent
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Apr 28, 2009
Grant Date -
Aug 7, 2008
app pub date -
Sep 10, 2007
filing date -
Feb 1, 2007
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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),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.
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