Method of enhancing the opacity of paper and paper produce thereof
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 provide wherein a reaction product of fatty acid, diamine and rosin acid and further including a surfactant is added to an slurry of cellulose fibers in the papermaking process.
Claims20
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, diamine and rosin acid 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 said product having an opacity enhaning composition therein comprising the reaction products formed from the reaction of fatty acid, diamine and rosin acid and wherein said composition further includes a suffactant.
Dependencies are inferred from the claim text.