Continuous process for the preparation of expandable styrene...

Details Continuous process for the preparation of expandable styrene... Continuous process for the preparation of expandable styrene...

C - Chemistry, Metallurgy

08

J

C08J 9/20 (2006.01) C08F 12/08 (2006.01) C08L 25/04 (2006.01)

Patent

CA 2227270

A process is disclosed for continuously producing expandable styrene polymers by polymerising styrene in the presence of expanding agents in three steps: (a) prepolymerising styrene in the mass; (b) dispersing the prepolymer in an aqueous phase; and (c) polymerising the prepolymer in an aqueous suspension.

L'invention concerne un procédé de production en continu de polymères expansibles de styrène par polymérisation de styrène en présence d'agents moussants en trois étapes: (a) une polymérisation préliminaire du styrène dans la masse; (b) la dispersion du pré-polymère dans une phase aqueuse; et (c) la polymérisation du pré-polymère dans une suspension aqueuse.

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