Method for production of porous cross-linked polymer material

C - Chemistry – Metallurgy – 08 – F

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C08F 8/00 (2006.01)

Patent

CA 2393789

A method for the production of a porous cross-linked polymer material by the polymerization of an HIPE containing a cross-linking agent, characterized by the fact at least one species of the cross-linking agent is a compound having a double bond equivalent f not less than 120 g/mol. The cross-linking agent is preferred to be a compound possessed of an alkylene oxide moiety or a vinyl polymer containing not less than two polymerizing double bonds in the molecular unit. Thus, it is made possible to produce a porous cross-linked polymer material excellent in absorbancy and flexibility, permit the HIPE to be polymerized in a short time, and therefore improve the efficiency of production.

L'invention concerne un procédé de production d'un matériau polymère poreux réticulé par polymérisation d'une émulsion à haut rapport de phase interne (HIPR) contenant un agent réticulant. Ce procédé se caractérise par le fait qu'au moins une espèce d'agent réticulant utilisée est un composé présentant un équivalent de double liaison f d'une valeur minimale de 120 g/mol. L'agent réticulant préféré est un composé comprenant une fraction oxyde d'alkylène ou un polymère vinylique contenant au minimum deux doubles liaisons de polymérisation dans l'unité moléculaire. Ainsi, on peut produire un matériau polymère poreux réticulé d'une grande absorbance et d'une grande souplesse, l'émulsion à haut rapport de phase interne (HIPR) pouvant être polymérisée en un temps court, ce qui améliore la productivité.

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