Cationic polyamines useful as drainage aids and stabilizers...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 73/02 (2006.01) C08L 79/02 (2006.01) D21H 17/56 (2006.01) D21H 17/62 (2006.01) D21H 21/10 (2006.01)

Patent

CA 2086487

This invention generally provides a class of novel cationic complex terpolymers comprised of the reaction product of a polyamine having secondary amine groups, a crosslinking agent, and a cationizing agent having an epoxide group and a tertiary or quaternary amine group. These cationic polyamines have been found to be useful for a variety of operations in the manufacture of paper and paperboard, especially as drainage aids and stabilizers for dispersed rosin sizing agents.

L'invention porte généralement sur une classe de nouveaux terpolymères cationiques complexes, constitués du produit de réaction d'une polyamine possédant des groupes amine secondaire, d'un réticulant et d'un agent cationisant portant un groupe époxyde et un groupe amine tertiaire ou quaternaire. Ces polyamines cationiques se sont révélées utiles pour diverses opérations de fabrication du papier et du carton, notamment comme séquestrants et stabilisateurs pour les agents de collage dispersés à base de rosine.

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