Starches for use in papermaking
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsMichele M. Merrette, John J. Tsai, Paul H. Richardson
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Abstract
This invention relates to a degraded, inhibited cationic starch for use in papermaking systems, which affords improved physical properties, particularly strength. Additionally these derivatives provide easy-to-prepare alternatives to traditional starches, and can even be added directly to the papermaking process without cooking. While the benefits of these starch compositions can be applied to any type of papermaking method, they are especially useful in high shear, high conductivity and recycle systems.
Claims18
A starch composition comprising a degraded starch modified to contain a cationic group and inhibited wherein the final peak viscosity of said starch is less than 500 centipoise and is 110 to 1000 percent of the non-inhibited degraded cationized starch viscosity.
Dependencies are inferred from the claim text.