D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/10 (2006.01) D21H 21/18 (2006.01) D21H 17/29 (2006.01) D21H 17/45 (2006.01) D21H 17/55 (2006.01) D21H 17/56 (2006.01) D21H 23/76 (2006.01)
Patent
CA 2284931
Paper, board and cardboard having high dry strength are produced by the addition of cationic, anionic and/or amphoteric starch as dry strength agents to the paper stock and drainage of the paper stock with sheet formation in the presence of cationic polymers as retention aids for starch, and cationic polymeric retention aids are used for increasing the retention of dry strength agents comprising cationic, anionic and/or amphoteric starch in the production of paper, board and cardboard.
L'invention concerne un procédé de production de papier, de carton-pâte et de carton à haute résistance à la traction à l'état sec, par adjonction à la pâte à papier, d'amidon cationique, anionique et/ou amphotère, comme agent de résistance à la traction à l'état sec, puis par déshydratation de la pâte à papier pour former une feuille en présence de polymères cationiques comme agents de rétention de l'amidon. L'invention concerne également l'utilisation d'agents de rétention polymères cationiques pour augmenter la rétention d'agents de résistance à la traction à sec, à base d'amidon cationique, anionique et/ou amphotère, lors de la production de papier, de carton-pâte et de carton.
Baumann Peter
Dyllick-Brenzinger Rainer
Kruger Ellen
Lorencak Primoz
Meixner Hubert
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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