Functionalization of paper components
First Claim
1. A mixture for producing a paper-based material, comprising:
- an aqueous medium;
pulp comprising fibers having a negative charge;
filler particles having an inorganic surface; and
a cationic amine-containing polymer for enhancing properties of at least one of the mixture and the paper-based material, the cationic amine-containing polymer being substantially functionalized to only one of the pulp and the filler particles, wherein the cationic amine-containing polymer is chitosan and wherein said chitosan is substantially functionalized by precipitation to only one of the pulp and the filler particles.
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Accused Products
Abstract
Compositions and methods of producing paper-based materials are disclosed. In general, the techniques utilize an amine-containing polymer, such as chitosan, to functionalize one or more components of a mixture used to form materials such as paper-based materials. Such components can include the fibers of a pulp and/or filler particles. In one instance, either the pulp or the filler particles are functionalized, but not both. Such functionalization can improve the qualifies of a paper-based material relative to when such functionalization is not utilized. Techniques and compositions are also described to further improve the qualities of a paper material by utilizing a complementary polymer which can couple with the amine-containing polymer.
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Citations
12 Claims
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1. A mixture for producing a paper-based material, comprising:
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an aqueous medium; pulp comprising fibers having a negative charge; filler particles having an inorganic surface; and a cationic amine-containing polymer for enhancing properties of at least one of the mixture and the paper-based material, the cationic amine-containing polymer being substantially functionalized to only one of the pulp and the filler particles, wherein the cationic amine-containing polymer is chitosan and wherein said chitosan is substantially functionalized by precipitation to only one of the pulp and the filler particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12)
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10. A paper-based material, comprising:
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pulp comprising fibers having a negative charge; filler particles having an inorganic surface; and a cationic amine-containing polymer for enhancing properties of the paper-based material, the cationic amine-containing polymer being substantially functionalized to only one of the pulp and the filler particles, wherein the cationic amine-containing polymer is chitosan and wherein said chitosan is substantially functionalized by precipitation to only one of the pulp and the filler particles.
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Specification