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US 12,584,273 B2Granted
Composition and method for papermaking
AssigneeEcolab USA Inc.
InventorsMingli Wei, Heqing Huang, David Steven Jordan, Weiguo Cheng, Mei Liu, Zhi Chen, J. Matthew Chudomel, Meng Zhang
Life of this patent
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Abstract
Compositions and colloidal particles are provided that may be used to improve a papermaking process. The compositions and colloidal particles may include a polymer and an inorganic salt. A papermaking process carried out using the presently disclosed compositions and colloidal particles may produce a paper product that has increased strength properties.
Claims20
A method of improving a papermaking process, comprising:
- mixing an organic polymer with an aluminum salt and/or a ferric salt to form a composition,
- adding the composition to a papermaking process water, and
- forming a colloidal particle in the papermaking process water,
- wherein the colloidal particle comprises the organic polymer embedded within a colloidal aluminum hydroxide complex and/or a colloidal ferric hydroxide complex, and
- wherein the composition and the colloidal particle exclude an anionic polysaccharide.
2 more elements
A method of improving a papermaking process, comprising:
- mixing an organic polymer with an aluminum salt and/or a ferric salt to form a composition,
- adding the composition to a papermaking process water,
- forming a colloidal particle in the papermaking process water, and
- treating a component of the papermaking process with the colloidal particle,
- wherein the papermaking process water comprises the component, and wherein the composition and the colloidal particle exclude an anionic polysaccharide.
2 more elements
A method of improving a papermaking process, comprising:
- mixing an organic polymer with an aluminum salt and/or a ferric salt to form a composition,
- adding the composition to a papermaking machine, and
- forming a colloidal particle in the papermaking machine,
- wherein the composition comprises a pH of about 2 to about 7, and wherein the composition and the colloidal particle exclude an anionic polysaccharide.
1 more element
Dependencies are inferred from the claim text.