D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
9/42
D21H 17/24 (2006.01) D21H 17/29 (2006.01) D21H 17/32 (2006.01) D21H 17/68 (2006.01) D21H 21/10 (2006.01)
Patent
CA 1250703
ABSTRACT In the production of paper or pulp sheets from a paper stock, a binder is added which comprises cationic and anionic components to improve the paper charac- teristics and the stock characteristics, such that increased retention and a more readily dewatered stock are obtained. The anionic component consists of colloidal anionic particles having at least one surface layer of aluminium silicate or aluminium-modified silicic acid, such that the surface groups of the particles contain silicium and aluminium atoms in a ratio of from 9.5:0.5 to 7.5:2.5. The cationic component consists of cationic carbo- hydrate having a degree of substitution of 0.01-1Ø
483237
Andersson Kjell R.
Larsson Bernt
Larsson Bo V.
Thoresson Hans-Olof
Eka Ab
Gowling Lafleur Henderson Llp
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