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US 5,393,334 AGranted
Papermaking compositions, process using same, and paper produced therefrom
AssigneeSequa Chemicals, Inc.
InventorGary S. Hutcheson
Life of this patent
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AssigneeSequa Chemicals, Inc.
InventorGary S. Hutcheson
Estimating the term…
A chemical composition for use in the papermaking process to produce a paper having enhanced characteristics of brightness, opaqueness, and sizing is provided. The process using the composition to make the paper and the paper made therefrom are also provided by the present invention. The composition employs a cationic softener base, such as the mono- and di-fatty acid amides of aminoethylethanolamine, to enhance sizing, opacity and brightness. A surfactant, such as an ethoxylated tallow amine and an acid, is used to ensure that the components of the composition remain dispersed therein and that the composition achieves uniform dispersibility on the paper. To speed the production of the composition, a viscosity controlling agent, such as sodium chloride or sodium acetate, may be added thereto. The composition is added to pulp slurry during the papermaking process, and a paper made therefrom exhibits excellent qualities of brightness, opaqueness, water repellency and dispersibility.
A composition for adding to a pulp slurry of cellulose fibers during a papermaking process for enhancing brightness, opaqueness and sizing in the paper produced therefrom wherein said composition comprises as a brightening, opacifying and sizing agent a cationic softener base selected from the group consisting of the reaction products formed from the reaction of fatty acids selected from the group consisting of hydroxy substituted fatty acid, unsaturated fatty acid, and mixtures thereof and diamines and wherein said composition further includes a surfactant.
A composition for adding to a pulp slurry of cellulose fibers for enhancing brightness, opaqueness and sizing of paper made therefrom consisting essentially of a surfactant, a cationic softener base selected from the group consisting of the reaction products formed from the reaction of fatty acids selected from the group consisting of hydroxy substituted fatty acid, unsaturated fatty acid, and mixtures thereof and alkanoldiamines, and water.
A composition for adding to a pulp slurry of cellulose fibers during the process of making paper for enhancing brightness, opaqueness and sizing in the paper produced therefrom, said composition comprising:
A method of producing an enhanced paper comprising the steps of:
A paper product made from cellulose fibers, said product having a composition therein comprising a cationic softener base selected from the group consisting of the reaction products formed from the reaction of fatty acids selected from the group consisting of hydroxy substituted fatty acid, unsaturated fatty acid and mixtures thereof and alkanoldiamines and wherein said composition further comprises a surfactant.
Dependencies are inferred from the claim text.