METHOD OF MANUFACTURING PAPER WITH UNBLEACHED CELLULOSE PULP SUSPENSION CONTAINING ORGANIC RESIDUES
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United States of America Patent
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Aug 15, 2017
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Aug 16, 2016
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Abstract
A method of making paper comprising adding to an aqueous suspension of cellulosic pulp slurry a polymer in the form of an inverse emulsion comprising a cationic poly N,N-(dialkylaminoalkyl) (meth)acrylamide or it's quaternates or salts, and dewatering the cellulose pulp slurry to form a paper or paperboard product, wherein the pulp slurry contains more than about 75 weight ppm of water soluble lignin based upon total pulp slurry weight, and wherein the polymer is added to the pulp slurry at a dosage of 0.001 to 1% by weight based upon cellulose pulp solids, and wherein the polymer optionally contains multi-functional monomer.
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