Improved retention and drainage in the manufacture of paper

Details Improved retention and drainage in the manufacture of paper Improved retention and drainage in the manufacture of paper

D - Textiles, Paper

21

H

D21H 21/10 (2006.01)

Patent

CA 2594306

A method of improving retention and drainage in a papermaking process is disclosed. The addition of an associative polymer, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry to improve retention and drainage is disclosed. Additionally a method to improve retention and drainage comprising addition of an organic microparticle, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry is disclosed. A composition comprising an associative polymer, and a poly(vinylamine) and optionally further comprising cellulose fiber is disclosed.

L'invention concerne un procédé de rétention et de drainage améliorés utilisés pour la fabrication du papier. A cette fin, on ajoute un polymère associatif, une poly(vinylamine) et éventuellement un matériau siliceux à la suspension de pâte à papier. Toujours à cette même fin, l'invention concerne un procédé consistant à ajouter à ladite suspension une microparticule organique,, une a poly(vinylamine) et éventuellement un matériau siliceux. Est décrite en outre une composition renfermant un polymère associatif, une poly(vinylamine) et éventuellement une fibre cellulosique.

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