Process for the continuous polymerization of polyblends

Details Process for the continuous polymerization of polyblends Process for the continuous polymerization of polyblends

1981-07-17

1982-12-07

Michl, Paul R.

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

Synthetic resins

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

525 86, C08F27902

Patent

active

043628508

ABSTRACT:
The present invention relates to an improved process for the continuous mass polymerization of solutions comprising an alkenyl aromatic monomer having a diene rubber polymer dissolved therein comprising the steps of polymerizing said solution in a first reaction zone to about 15 to 50% conversion dispersing said diene rubber or rubber particles in a partially polymerized solution, followed by further polymerization said partially polymerized solution in a second polymerization zone to about 20 to 95% conversion the improvement comprising having present in said solution, as fed to said first reaction zone, a polymer of said monomers in an amount sufficient to control the size of said diene rubber particles.

REFERENCES:
patent: 3903202 (1975-09-01), Carter
patent: 3945976 (1976-03-01), McCurdy
patent: 3996311 (1976-12-01), Westphal

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