Sulfomethylated lignin amines
AssigneeWestvaco Corporation
InventorPeter Schilling
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Abstract
Surface active agents are prepared from by-products of papermaking. Lignin, modified lignin, resin acid, and tall oil fatty acid are reacted with a polyamine to produce an amine condensate, and this amine condensate is reacted with a bisulfite and formaldehyde in aqueous solution to produce the novel surface active agents.
Claims13
A surface active agent prepared by reacting an amine condensate with a bisulfite formaldehyde in aqueous solution wherein the amine condensate is the product of the reaction between a polyamine having at least three amine groups per molecule and a by-product of papermaking selected from the group consisting of lignin, modified lignin, and mixtures thereof.
Dependencies are inferred from the claim text.