Process for preparing styrenic polymer particles

Details Process for preparing styrenic polymer particles Process for preparing styrenic polymer particles

1980-05-29

1981-06-02

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 88, 526201, C08F 220

Patent

active

042712815

ABSTRACT:
Styrenic polymer particles having a uniform particle size distribution are prepared without the formation of fine polymer powders. The suspension polymerization process which comprises providing a stirred, aqueous suspension of polymeric seed particles, adding gradually to the suspension styrenic monomer and polymerizing it therein, and continuing the addition of monomer as the polymerization proceeds, may be improved by introducing the styrenic monomer below the surface of the suspension.

REFERENCES:
patent: 2932629 (1960-04-01), Wiley
patent: 3714103 (1973-01-01), Huhn
patent: 3725367 (1973-04-01), Kemp
patent: 3772226 (1973-11-01), Powell
patent: 3857801 (1974-12-01), Kulas
patent: 4085169 (1978-04-01), Saito
patent: 4091054 (1978-05-01), Saito

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