Process for papermaking

Details Process for papermaking Process for papermaking

D - Textiles, Paper

21

H

9/44

D21H 17/32 (2006.01) D21H 17/68 (2006.01) D21H 23/00 (2006.01)

Patent

CA 1186857

Abstract of the Disclosure: In making paper from an aqueous papermaking stock, a binder comprising colloidal silicic acid and guar gum is added to the stock for improving the paper or the retention of the stock components so that the pol- lution problems and the amount of valuable substances in the white water are reduced. The guar gum is amphoteric or preferably cationic and may form part of the binder complex in a mixture with cationic starch. The weight ratio of guar gum to SiO2 or of guar gum plus cationic starch to SiO2 is between 0.1:1 and 25:1.

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