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US 4,072,644 AGranted
Water based printing ink
AssigneeMonsanto Company
InventorRoss M. Hedrick
Life of this patent
Estimating the term…
Abstract
A rapidly drying aqueous printing ink containing a gel forming polymer soluble in the ink but which rapidly gels upon application of the ink to a substrate during a printing process.
Claims22
An aqueous based printing ink comprising ink pigment, water and a polymer solubilized in said ink by a rapid removable solubilizing component, said polymer being capable of forming a water-insensitive gel film upon removal of said rapid removable solubilizing component.
Dependencies are inferred from the claim text.