Starch compositions and methods of making starch compositions
OwnerDavid J. Neivandt, Joseph M. Genco +1inventors
InventorsDavid J. Neivandt, Joseph M. Genco, Mark A. Paradis
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Abstract
A starch composition is made by cooking a starch and combining the cooked starch with a polymer, the polymer containing anionic groups or potential anionic groups. Another starch composition is made by combining a starch with a polymer, the polymer containing anionic groups or potential anionic groups, and cooking the combined starch and polymer composition. A dry starch composition, suitable for forming an additive for a paper furnish, includes a starch and a polymer containing anionic groups or potential anionic groups. Methods of making the starch composition are also disclosed.
Claims67
A starch composition made by cooking a starch and combining the cooked starch with a polymer, the polymer containing anionic groups or potential anionic groups.
A starch composition made by combining a starch with a polymer, the polymer containing anionic groups or potential anionic groups, and cooking the combined starch and polymer composition.
A dry starch composition suitable for forming an additive for a paper furnish, the starch composition comprising a starch and a polymer containing anionic groups or potential anionic groups.
A method of making a starch composition containing a polymer, the method comprising combining a starch and a polymer to form a starch composition, cooking the starch composition at a pH less than the pKa of the polymer to form a cooked starch composition, and then raising the pH of the cooked starch composition above the pKa of the polymer.
A method of making a composition suitable for adding to a paper furnish, the method comprising cooking a starch, combining the cooked starch and a polymer to form a combination having a pH lower than the pKa of the polymer, and then raising the pH of the combined starch and polymer composition to a level greater than the pKa of the polymer.
A method of making a composition suitable for adding to a paper furnish, the method comprising combining a starch and a polymer, and cooking the combined starch and polymer at a pH greater than the pKa of the polymer.
A method of making a composition suitable for adding to a paper furnish, the method comprising cooking a starch, and then combining the cooked starch and a polymer, wherein the pH of the cooked starch and polymer composition is greater than the pKa of the polymer.
Dependencies are inferred from the claim text.