FIELD: pulp industry.
SUBSTANCE: invention relates to compositions used in the paper making process to increase paper strength. Composition comprises an anionic polyacrylamide (APAM) and a high charge cationic glyoxylated polyacrylamide (GPAM). High-charged cationic glyoxylated polyacrylamide has a cationic charge density of 0.6 meq/g or more. Method for increasing paper strength during the manufacture of paper includes adding said composition to the pulp weight.
EFFECT: increase in the degree of retention in paper manufacture and strength properties of the paper is provided.
20 cl, 3 tbl
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|---|---|---|---|
| PAPER PRODUCTION METHOD | 2016 |
|
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| METHOD OF INCREASING ADVANTAGES OF REINFORCING MATERIALS FOR PRODUCING PAPER AND CARDBOARD | 2012 |
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