Paper making and fiber liberation – Processes and products – Non-fiber additive
Patent
1981-02-26
1983-06-14
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-fiber additive
1621816, D21H 328, D21H 366
Patent
active
043881505
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 recovering 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 SiO.sub.2 is between 1:1 and 25:1.
REFERENCES:
patent: 2647158 (1953-07-01), Booth
patent: 2865743 (1958-12-01), Weisgerber
patent: 3224927 (1965-12-01), Brown et al.
patent: 3227607 (1966-01-01), Mays et al.
patent: 3592834 (1971-07-01), Buckman et al.
patent: 3721575 (1973-03-01), Jarowenko et al.
patent: 3737370 (1973-06-01), Jarowenko et al.
patent: 3779912 (1973-12-01), Redmore et al.
Casey, Pulp and Paper, vol. II, (1960), pp. 746, 846, 1014, 1178, 1179.
Noreus, "The Use of Activated Silica in the Coagulation of Highly Colored Water", TAPPI, vol. 120, No. 11, (Mar. 1945), pp. 101-103.
Batelson Per G.
Johansson Hans E.
Larsson Hans M.
Sunden Olof
Svending Per J.
Chin Peter
Eka Aktiebolag
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