D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
9/42, 9/59
D21H 21/10 (2006.01) D21H 17/66 (2006.01) D21H 17/28 (2006.01) D21H 17/32 (2006.01) D21H 17/37 (2006.01)
Patent
CA 1324703
TITLE RETENTION AND DRAINAGE AID FOR PAPERMAKING ABSTRACT An improvement in a papermaking process in which an aqueous paper furnish containing cellulosic pulp, and optionally also mineral fillers is formed and dried, the improvement being the addition of a drainage and retention aid comprising a water soluble alkali metal polyaluminosilicate microgels formed from the reaction of polysilicic acid and an alkali metal aluminate, the polyaluminosilicate having an alumina/silica mole ratio greater than about 1/100, together with a cationic polymer selected from the group consisting of cationic starch, cationic guar and cationic polyacrylamide.
588153
Eka Chemicals (ac) Limited
Interlates Limited
Sim & Mcburney
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