Anionic copolymers prepared in an inverse emulsion matrix...

Details Anionic copolymers prepared in an inverse emulsion matrix... Anionic copolymers prepared in an inverse emulsion matrix...

C - Chemistry, Metallurgy

08

L

C08L 33/26 (2006.01) C08F 2/32 (2006.01) C08L 33/02 (2006.01) C08L 71/02 (2006.01) D21H 17/42 (2006.01)

Patent

CA 2468866

A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k') determined in 0.01M NaCl greater than 0.75 and a storage modulus (G') for a 1.5 wt.% actives polymer solution at 4.6 Hz greater than 175 Pa.

L'invention concerne un procédé de fabrication de papier et une composition utilisant, comme agent de rétention, un copolymère anionique soluble dans l'eau, préparé selon une technique de polymérisation eau dans l'huile qui, en l'absence d'un agent de réticulation, se caractérise par une constante de Huggins (k') dans 0,01M de NaCl supérieure à 0,75 et un module de conservation (G') pour 1,5 % en masse d'une solution polymère active à 4,6 Hz supérieur à 175 Pa.

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