Process for the preparation of polymer particles

Details Process for the preparation of polymer particles Process for the preparation of polymer particles

C - Chemistry, Metallurgy

08

J

C08J 9/20 (2006.01) C08L 25/02 (2006.01) C12M 1/26 (2006.01)

Patent

CA 2258320

Process for the preparation of vinylarene polymer particles, which process comprises mixing a polar polymer capable of absorbing water, with vinylarene monomer, pre-polymerising vinylarene monomer; suspending the pre-polymerised mass; and polymerise the suspended particles further. This case further relates to vinylarene polymer particles containing polar polymer and from more than 3 to 40 wt.% of water, and to foamed articles.

L'invention concerne un procédé pour la préparation de particules de polymère de vinylarène. Ce procédé consiste à mélanger un polymère polaire pouvant absorber l'eau, avec un monomère de vinylarene, à prépolymériser le monomère de vinylarène, à mettre en suspension la masse prépolymérisée, et à polymériser les particules en suspension. Cette invention concerne, en outre, des particules de polymère de vinylarene contenant un polymère polaire et entre 3 et 40 % en poids d'eau. L'invention traite aussi d'articles moussés.

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