Pigment particles coated with polysaccharides and having improved properties
AssigneeE.I. du Pont de Nemours and Company
InventorsSubramaniam Sabesan, John Bolt
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Abstract
Processes for altering surface properties of pigment particles are provided. The processes include coating the particles with ionic natural polysaccharides or ionic derivatives of natural polysaccharides, providing enhanced properties.
Claims32
A composition comprising an inorganic metal-containing pigment at least partially coated with at least one polysaccharide component, said polysaccharide component comprising at least one compound selected from ionic natural polysaccharides and ionic derivatives of natural polysaccharides.
A cellulose-based product comprising a composition comprising titanium dioxide particles at least partially coated with at least one polysaccharide component, said polysaccharide component comprising at least one selected from ionic natural polysaccharides and ionic derivatives of natural polysaccharides.
A process for improving the retention by cellulosic fibers of inorganic metal-containing pigment particles, comprising contacting the pigment particles in liquid phase with at least one ionic natural polysaccharide or ionic derivative of a natural polysaccharide, wherein the polysaccharide or ionic derivative of natural polysaccharide forms at least a partial coating on the surface of the particles.
Dependencies are inferred from the claim text.