A process for the production of paper

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 220/56 (2006.01) D21H 17/20 (2006.01) D21H 17/68 (2006.01) D21H 21/10 (2006.01) D21H 23/08 (2006.01) D21H 11/14 (2006.01) D21H 17/01 (2006.01) D21H 17/24 (2006.01) D21H 17/28 (2006.01) D21H 17/32 (2006.01) D21H 17/37 (2006.01) D21H 17/45 (2006.01) D21H 23/10 (2006.01)

Patent

CA 2329191

The present invention relates to process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, comprising adding to the suspension drainage and retention aids comprising a cationic organic polymer and anionic microparticulate material, forming and dewatering the suspension on a wire, wherein the cationic organic polymer has a non-aromatic hydrophobic group. The invention further relates to a cationic vinyl addition polymer comprising in polymerized form at least one non-cationic monomer having a non-aromatic hydrophobic group and at least one cationic monomer.

L'invention concerne 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 des auxiliaires de drainage et de rétention contenant un polymère organique cationique et une matière microparticulaire anionique, à former et à déshydrater la suspension sur un fil. Le polymère organique cationique a un groupe hydrophobe non aromatique. L'invention concerne également un polymère d'addition vinyle cationique contenant, sous forme polymérisée, au moins un monomère non cationique ayant un groupe hydrophobe non aromatique et au moins un monomère cationique.

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