Continuous bulk process for producing impact thermoplastics...

Details Continuous bulk process for producing impact thermoplastics... Continuous bulk process for producing impact thermoplastics...

C - Chemistry, Metallurgy

08

F

400/1127, 400/20

C08F 279/02 (2006.01) C08F 291/02 (2006.01)

Patent

CA 1173585

Abstract of the Disclosure Particle size of rubber is controlled and minimized in a continuous bulk polymerization of impact resistant polymers obtained by the polymerization of vinyl-aromatic monomer and an elastomeric polymer by utilizing at least three distirct reaction zones comprising a slightly agitated pregrafting zone in which none or only a small amount of chain transfer agent is added; a prepolymerization zone in which shearing agitation takes place, the bulk of the chain transfer agent is added and phase inversion occurs; and a polymerization zone in which polymerization is completed under substantially static conditions.

392627

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