DYE DISCHARGE INKJET INK COMPOSITIONS
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United States of America Patent
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May 21, 2014
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Aug 18, 2013
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Abstract
A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition or an ink formulation containing same, and kits for use in such processes, are also disclosed.
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