A process for the production of paper

Details A process for the production of paper A process for the production of paper

D - Textiles, Paper

21

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D21H 23/04 (2006.01) D21H 17/24 (2006.01) D21H 21/10 (2006.01) D21H 21/18 (2006.01) D21H 23/08 (2006.01) D21H 11/14 (2006.01) D21H 17/01 (2006.01) D21H 17/28 (2006.01) D21H 17/32 (2006.01) D21H 17/37 (2006.01) D21H 17/45 (2006.01) D21H 17/68 (2006.01) D21H 23/10 (2006.01)

Patent

CA 2329027

The invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension a drainage and retention aid comprising a cationic or amphoteric polysaccharide, forming and dewatering the suspension on a wire, wherein the cationic poylsaccharide has a hydrophobic group. The invention further relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension a dry strength agent comprising a cationic or amphoteric polysaccharide, forming and dewatering the suspension on a wire, wherein the polysaccharide has a hydrophobic group.

L'invention concerne un procédé de production de papier à partir d'une suspension contenant des fibres cellulosiques, et d'éventuelles charges. Ce procédé consiste à ajouter à la suspension un auxiliaire de drainage et de rétention contenant un polysaccharide cationique ou amphotérique, à former et à déshydrater la suspension sur un fil. Le polysaccharide cationique a un groupe hydrophobe. L'invention concerne également un procédé de production de papier à partir d'une suspension contenant des fibres cellulosiques, et éventuellement des charges. Ce procédé consiste à ajouter à la suspension un agent de résistance sec contenant un polysaccharide cationique ou amphotérique, à former et à déshydrater la suspension sur un fil. Le polysaccharide contient un groupe hydrophobe.

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