D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/00 (2006.01) D21H 17/45 (2006.01) D21H 17/68 (2006.01)
Patent
CA 2694550
A composition and method for improving retention and drainage in a papermaking process is disclosed. An unexpected synergistic effect has been observed when certain amounts of a promoter are used in conjunction with a microparticle. Optionally, a flocculant is also used to further improve the observed synergism. The microparticle includes an inorganic anionic or cationic siliceous material. The promoter includes a modified diallyl-N,N- disubstituted ammonium halide polymer. The flocculant includes one or more high molecular weight, water-soluble cationic, anionic, nonionic, zwitterionic, or amphoteric polymers.
L'invention concerne une composition et un procédé pour améliorer la rétention et le drainage d'un procédé de fabrication du papier. Un effet synergique inattendu a été observé lorsque certaines quantités de promoteur sont utilisées conjointement à une microparticule. Facultativement, un floculant est également utilisé pour améliorer davantage la synergie observée. La microparticule comporte un matériau siliceux anionique ou cationique inorganique. Le promoteur renferme un polymère d'halogénure d'ammonium diallyl-N,N-disubstitué modifié. Le floculant inclut un ou plusieurs polymères cationiques, anioniques, non ioniques, zwittérioniques ou amphotères solubles dans une eau de masse moléculaire élevée.
Cardoso Javier S.
Shing Jane B. Wong
Bcf Llp
Nalco Company
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