Method for producing cationic polyelectrolytes

Details Method for producing cationic polyelectrolytes Method for producing cationic polyelectrolytes

C - Chemistry, Metallurgy

08

F

C08F 2/48 (2006.01) C02F 1/56 (2006.01) C08F 220/34 (2006.01) C08F 220/54 (2006.01) C08F 220/56 (2006.01) C08F 220/60 (2006.01) D21H 17/45 (2006.01)

Patent

CA 2308310

The invention relates to a method for producing water-soluble, cationic polyelectrolytes. Polymerisation of water-soluble monomers is initiated by a combination of UV light, a photoinitiator and a redox system at low temperatures. The inventive method is characterised in that the redox system can only initiate polymerisation at temperatures of 20 ~C or above. The polymers have a high molecular weight and a low residual monomer content.

L'invention concerne un procédé qui permet de fabriquer des polyélectrolytes cationiques hydrosolubles. Le procédé consiste à provoquer la polymérisation des monomères hydrosolubles, à une température basse, par une combinaison d'ultraviolets, d'un photoamorceur et d'un système redox. Il est caractérisé par le fait que le système redox n'est capable de provoquer une polymérisation qu'à une température supérieure ou égale à 20 ·C. Les polymères ont un poids moléculaire élevé et une teneur en monomères résiduels basse.

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