Method of modifying the opacity of paper and paper produced therefrom
AssigneeSequa Chemicals, Inc.
InventorsLouis R. Dragner, Bernard F. North
Life of this patent
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Abstract
A method of enhancing the opacity of paper and paper of enhanced opaqueness is provided wherein a reaction product of fatty acid, diamine and a glyoxal product an further including a surfactant, is added to a slurry of cellulose fibers in a papermaking process.
Claims24
A method of producing a paper with enhanced opacity comprising the steps of:
- providing a pulp slurry of cellulose fibers;
- adding to said slurry a composition comprising the reaction products formed from the reaction of fatty acid and diamine, to which is added a glyoxal compound and wherein said composition further includes a surfactant;
- and
- forming said slurry into said paper.
In a paper product made from cellulose fibers, the improvement comprising an opacity enhancing composition therein comprising the reaction products formed from the reaction of fatty acid and diamine, to which is added a glyoxal compound and wherein said composition further includes a surfactant.
Dependencies are inferred from the claim text.