The use of modified starch products as retention agents in...

Details The use of modified starch products as retention agents in... The use of modified starch products as retention agents in...

D - Textiles, Paper

21

H

D21H 17/69 (2006.01) D21H 21/10 (2006.01) D21H 17/28 (2006.01) D21H 17/37 (2006.01)

Patent

CA 2336660

The invention relates to the use of modified starches as retention agents for pigments, inorganic fillers and fines in the production of paper. Said modified starches are obtained by decomposing starch, starch derivatives and/or breakdown products thereof in aqueous solution in the presence of at least one cationic polymer made up of at least 20 wt. % polymerised, protonised or quarternised dialkylaminoalkyl(meth)acrylic acid amide units and at least one inorganic mineral substance.

Utilisation d'amidon modifié obtenu par dissolution d'amidon, de dérivés d'amidon et/ou de leurs produits de dégradation dans une solution aqueuse en présence d'au moins un polymérisat cationique constitué d'au moins 20 % en poids d'unités d'amide d'acide dialkylaminoalkyl(méth)acrylique polymérisées protonées ou quaternisées et d'au moins une substance minérale inorganique, en tant qu'agent de rétention pour des pigments, des matières de charge inorganiques et des fines dans la fabrication du papier.

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