D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
9/43
D21F 1/82 (2006.01) D21H 17/29 (2006.01) D21H 17/68 (2006.01) D21H 21/52 (2006.01) D21H 23/76 (2006.01)
Patent
CA 1154563
ABSTRACT In making paper from an aqueous papermaking stock a binder comprising colloidal silicic acid and cationic starch is added to the stock for improving the paper or the retention of the stock components, or is added to the white water for reducing the pollution problems or re- covering values from the white water. The cationic starch of the binder has a degree of substitution of not less than 0.01, and the weight ratio of cationic starch to SiO2 is between 1:1 and 25:1.
373025
Bdtelson Per G.
Johansson Hans E.
Larsson Hans M.
Sunden Olof
Svending Per J.
Eka Aktiebolag
Gowling Lafleur Henderson Llp
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