Process for the production of sap

Details Process for the production of sap Process for the production of sap

C - Chemistry, Metallurgy

08

F

C08F 2/01 (2006.01) A61L 15/22 (2006.01) A61L 15/60 (2006.01) C08F 6/00 (2006.01)

Patent

CA 2497251

In a continuous process for the production of dried Superabsorbent polymers (SAPs) the polymerization reaction is carried out either in an initially homogenous aqueous monomer solution (bulk aqueous solution polymerization) or in a heterogeneous water-in-oil reactant mixture (reverse phase suspension or emulsion polymerization) within a continuous closed polymerization reactor (1), then the resulting polymer gel is dried within a continuous moved bed in a closed dryer (2), avoiding the needs of standard intermediate maturity tank(s).

L'invention concerne un procédé de production en continu de polymères secs superabsorbants, consistant à mettre en oeuvre la réaction de polymérisation soit dans une solution monomère aqueuse initialement homogène (polymérisation en solution aqueuse en masse) soit dans un mélange réactif hétérogène eau dans l'huile (polymérisation en émulsion ou suspension en phase inverse) dans un réacteur de polymérisation fermé continu (1) puis à sécher le gel polymère ainsi obtenu à l'intérieur d'un lit mobile continu dans un séchoir fermé (2), toute cuve de maturation intermédiaire standard étant ainsi rendue inutile.

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