Enzymes in combination with polyelectrolytes for enhancing...

Details Enzymes in combination with polyelectrolytes for enhancing... Enzymes in combination with polyelectrolytes for enhancing...

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) C12S 3/08 (2006.01) D21C 5/00 (2006.01) D21H 11/14 (2006.01) D21H 17/00 (2006.01) D21H 17/37 (2006.01) D21H 17/42 (2006.01) D21H 17/45 (2006.01)

Patent

CA 2155906

A process for improving the freeness of paper pulp, which comprises the steps of adding to the pulp at least 0.05 % , based on the dry weight of the pulp, of a cellulolytic enzyme, allowing the pulp to contact the cellulolytic enzyme for from about 40 minutes to about 60 minutes at a temperature of at least 40°C, adding at least 0.011% , based on the dry weight of the pulp, of a water soluble cationic polymer, adding at least 0.007% , based on the dry weight of the pulp, of a water soluble anionic or nonionic polymer and forming the thus treated pulp into paper.

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