Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With washing
Patent
1994-09-16
1997-05-06
Czaja, Donald E.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With washing
162 55, 162 4, 162 72, 1621641, 1621685, 1621681, D21C 902
Patent
active
056267185
ABSTRACT:
The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
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Harrington, IV John C.
Letscher Mary B. K.
Philippe Irenee J.
Schuster Michael A.
Sutman Frank J.
Betz Laboratories Inc.
Czaja Donald E.
Fortuna Jos'e A.
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