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US 5,292,363 AGranted
Papermarking composition, 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 is made by combining an amphoteric softener such as a salt of an amphoteric stearic acid derivative, a cationic softener base, such as the mono- and distearamides of aminoethylethanolamine, an acid, such as acetic acid, a surfactant, such as POE (15) tallow amine, carbamide, and water. In another embodiment, a saccharide may be employed instead of the amphoteric stearic acid derivative, surfactant and carbamide. 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 addition to a pulp slurry of cellulose fibers in a papermaking process for enhancing brightness, opacity and sizing of a paper produced from said pulp comprising an amphoteric softener, a cationic softener, an acid, a surfactant and a carbamide.
A composition for addition to a pulp slurry of cellulose fibers for the formation of paper for enhancing brightness, opacity and sizing of a paper produced from said pulp comprising an amphoteric softener selected from the group consisting of salts of amphoteric fatty acid derivatives, a cationic softener base selected from the group consisting of reaction products formed from fatty acids and diamines, an acid, a surfactant, and a carbamide.
A composition for addition to a pulp slurry of cellulose fibers for the formation of paper for enhancing brightness, opacity and sizing of a paper produced from said pulp comprising a cationic softener base selected from the group consisting of reaction products formed from the reaction of fatty acids and alkanoldiamines and a brightening and sizing agent selected from the group consisting of reaction products formed from the reaction of a saccharide and an acid.
A method of preparing an emulsion of fatty acid amides of an alkanoldiamine in water where the concentration of fatty acid amides is greater than 5% comprising the steps of:
Dependencies are inferred from the claim text.