Continuous mass polymerization process for abs polymeric...

Details Continuous mass polymerization process for abs polymeric... Continuous mass polymerization process for abs polymeric...

C - Chemistry, Metallurgy

08

F

400/2036

C08F 279/02 (2006.01) C08L 51/04 (2006.01)

Patent

CA 1053837

ABSTRACT OF THE DISCLOSURE This invention relates to a process for the contin- uous mass polymerization of a monomer formulation comprising at least principally a monoalkenylaromatic monomer and an ethylenically unsaturated nitrile monomer having dispersed therein a first grafted diene rubber to form a first partially polymerized mixture; dispersing a second grafted rubber in said first mixture forming a second partially polymerized mixture and polymerizing said second mixture to form a third partially polymerized mixture followed by devolatilization of said third mixture to form a polyblend of the polymer of said monomer and said dispersed grafted diene rubber having a bimodal particle size distribution. The process produces polyblends having a matrix polymer phase of predetermined average molecular weight and molecular weight redistribution.

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