Manufacturing method for ambient temperature self-curable system of water borne-based polymeric ink
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United States of America Patent
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Issued Date -
Mar 22, 2007
app pub date -
Sep 20, 2005
filing date -
Sep 20, 2005
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Abstract
A manufacturing method for ambient temperature self-curable system of water borne based polymeric ink is disclosed by using a carboxyl group containing water borne-based polymer as a base of polymeric dye and reacting the isocyanate or epoxy group of this polymer with dye to form a water borne-based polymeric dye, then neutralizing this water borne-based polymeric dye to form a water borne polymeric dye dispersion, adding a latent curing agent to get a single-pack ambient temperature self-curable system of water borne polymeric ink. This new stable water borne-based polymeric ink becomes water-resistant and solvent-proof after drying at ambient temperature due to a curing reaction takes place between aziridine of curing agent and carboxylic acid of polymeric dye when its pH drops to and below 7.0 on drying. The application of this self-curable water borne polymeric ink has neither organic solvent emission nor energy needed for curing. It is not only meets the requirements of environmental, safety and industrial hygiene but also solves the water-resistance handicap of the conventional water borne-based ink.
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