Cationic water based polymers for ink, coating, and film applications

摘要

The present invention provides a durable, external surfactant free, cationic, water based jet ink polymer which when formulated into an ink jet ink results in a printing that has an excellent adhesion to metal or plastic substrates. Such a jet ink polymer is suitable performance replacement of solvent soluble polymers currently in commercial use. The hybridized copolymer comprises a hydrophobic functional polymeric backbone comprised of a polysiloxane polymer, a polyolefin polymer, or a functional polyvinyl polymer. The hybridized copolymer also comprises a plurality of copolymeric side chains attached to the backbone, comprising a polymerizable amine-containing unsaturated monomer, and a polymerizable unsaturated monomer. The use of the inks of the present invention enhances performance criteria such as print-head open time, ink stability, and resistance to typical water based cleaners.

主权项

1. A hybridized copolymer comprising:
(a) a hydrophobic functional polymeric backbone, wherein the backbone comprises (i) a functional vinyl chloride-containing polymer portion having an average molecular weight (MN) of from about 15,000 to about 50,000, and (ii) at least one polymer portion selected from the group consisting of a functional polyolefin polymer and a functional polysiloxane polymer; and (b) a plurality of hydrophilic polymeric side chains attached to the hydrophobic functional polymeric backbone, wherein the hydrophilic polymeric side chains comprise a polymerization product of at least a polymerizable unsaturated monomer and a polymerizable amine-containing unsaturated monomer, wherein the polymerizable amine-containing unsaturated monomer is present at a molar ratio relative to the functionality of the hydrophobic functional polymeric backbone of from about 3:1 to about 12:1, and wherein the hydrophobic functional polymeric backbone comprise from about 5 weight percent to about 60 weight percent of the hybridized copolymer.