Back to results
US 10,837,142 B2Granted
Paper coating composition with highly modified starches
AssigneeSappi North America, Inc.
InventorsJoseph M. Fernandez, Arbin Rajbanshi, Qi Wang
Life of this patent
Estimating the term…
Abstract
Coating compositions, including high degree of substitution (DS), viscosity optimized starches, are disclosed for use in non-barrier paper coatings. Paper coated with the same is disclosed as well as methods of making the coating compositions and coated papers.
Claims15
A coating composition comprising:
- a hydroxyalkylated starch and at least one pigment,
- wherein the hydroxyalkylated starch has a degree of substitution from 0.12 to 3 and a cooked starch viscosity of 4 to 20 cps and the viscosity is measured at 10 wt % solids, 100 rpm and 25° C. using a Brookfield viscometer.
A coated product comprising:
- (a) a substrate;
- (b) a coating composition comprising a hydroxyalkylated starch and at least one pigment,
- wherein the hydroxyalkylated starch has a degree of substitution from 0.12 to 3 and a cooked starch viscosity of 4 to 20 cps, the viscosity is measured at 10 wt % solids, 100 rpm and 25° C. using a Brookfield viscometer, and the coating composition is layered on at least one surface of the substrate.
A method of coating a substrate comprising:
- coating at least one surface of a substrate with a coating composition comprising a hydroxyalkylated starch and at least one pigment,
- wherein the hydroxyalkylated starch has a degree of substitution from 0.12 to 3 and a cooked starch viscosity of 4 to 20 cps and the viscosity is measured at 10 wt % solids, 100 rpm and 25° C. using a Brookfield viscometer.
Dependencies are inferred from the claim text.