Process for the preparation of monoallylamine polymer...

C - Chemistry – Metallurgy – 08 – F

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C08F 26/02 (2006.01) C08F 4/04 (2006.01) C08F 8/44 (2006.01)

Patent

CA 2330663

Disclosed are a process for the preparation of a high-molecular-weight monoallylamine polymer aqueous solution containing a monoallylamine polymer having a weight average molecular weight of 20,000 to 180,000 by polymerizing a monoallylamine sulfate in an aqueous medium in the presence of a specific radical polymerization initiator, and the above high-molecular-weight monoallylamine polymer aqueous solution. According to the present invention, a high- molecular-weight monoallylamine polymer useful for various uses can be remarkably efficiently and industrially advantageously prepared.

L'invention concerne un procédé de fabrication d'une solution aqueuse d'un polymère monoallylaminé à poids moléculaire élevé dont le poids moléculaire est compris entre 20 000 et 180 000, qui consiste à polymériser un sulfate de monoallylamine dans un milieu aqueux en présence d'une amorce spécifique de polymérisation radicalaire puis à neutraliser le mélange de réaction avec un alcali. L'invention concerne aussi la solution aqueuse du polymère monoallylaminé à poids moléculaire élevé. Ce procédé permet de produire avantageusement la solution polymère aqueuse ayant diverses applications, à l'échelle industrielle et avec une efficacité élevée.

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