Strength of paper made from pulp containing surface active,...

Details Strength of paper made from pulp containing surface active,... Strength of paper made from pulp containing surface active,...

D - Textiles, Paper

21

H

D21H 17/20 (2006.01) D21H 17/14 (2006.01) D21H 17/23 (2006.01) D21H 17/32 (2006.01) D21H 17/42 (2006.01) D21H 17/45 (2006.01) D21H 17/66 (2006.01) D21H 21/24 (2006.01) D21H 23/10 (2006.01)

Patent

CA 2167024

This invention is directed to a process for preparing an aqueous papermaking suspension containing a polyelectrolyte complex comprising providing an aqueous suspension of pulp fibers containing a water-soluble cationic polymer and a water-soluble anionic polymer that are reactable in the aqueous suspension to form the polyelectrolyte complex, and a compound containing a multivalent cation having at least a +3 charge, and forming the polyelectrolyte complex. It also includes the process wherein the aqueous suspension of pulp fibers contains surface active carboxyl compounds and water-soluble anionic compounds. It further includes the process wherein the aqueous papermaking suspension is sheeted and dried to obtain paper of improved strength.

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