Coated substrates for computer printers
AssigneeISP Investments Inc.
InventorsStephen L. Kopolow, Drupesh Patel, Michael Tallon
Life of this patent
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Abstract
Copolymers of dimethylaminopropyl methacrylamide and hydroxyethyl methacrylate having residual monomer levels of <2000 ppm and <500 ppm, respectively, are made by copolymerizing the monomers in a predetermined weight ratio in an aqueous-alcoholic solvent of defined composition. Substrates coated with these copolymers are capable of absorbing the solvents, e.g. water or organic solvents, of digital printing inks rapidly with dry times of <1 min.
Claims7
A water-alcohol soluble copolymer of uncrosslinked or crosslinked dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA), having residual monomer levels of <2000 ppm and <500 ppm, respectively, made by copolymerizing DMAPMA and HEMA in an aqueous-alcohol solvent in a weight ratio of DMAPMA:HEMA of about 60-70:40-30.
Dependencies are inferred from the claim text.