Process for preparing ABS polymeric polyblends

Details Process for preparing ABS polymeric polyblends Process for preparing ABS polymeric polyblends

1981-08-06

1983-12-06

Ziegler, J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 53, 525 54, 525243, C08L 5100, C08L 5300

Patent

active

044194927

ABSTRACT:
The invention relates to a process for preparing ABS polyblends having small and large grafted rubber particles dispersed therein providing polyblends having greater toughness and chemical resistance. The process includes extracting small grafted rubber particles into a separated monomer phase which is mass polymerized to a first melt, mixing said first melt with a second melt having present larger grafted rubber particles to form a third melt which is devolatilized to an ABS polyblend having a bimodal grafted rubber particle size distribution.

REFERENCES:
patent: 3576910 (1971-04-01), Jastrzebski

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