Process for the preparation of expandable polyvinylarene...

Details Process for the preparation of expandable polyvinylarene... Process for the preparation of expandable polyvinylarene...

C - Chemistry, Metallurgy

08

J

C08J 9/18 (2006.01) C08J 9/22 (2006.01) C08L 25/04 (2006.01)

Patent

CA 2341275

Process for the preparation of expandable polyvinylarene particles in which compact polyvinylarene particles are impregnated by an inorganic N2- and/or O2-containing gas at a temperature below 95 °C and at a pressure of 100 to 2,000 kPa gauge.

L'invention se rapporte à un procédé de préparation de particules de polyvinylarène expansibles, qui consiste à imprégner des particules de polyvinylarène compactes avec un gaz inorganique contenant du N2 et/ou O2, à une température inférieure à 95 DEG C et à une pression comprise entre 100 et 2000 kPa.

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