Process of preparing styrenic polymer particles

Details Process of preparing styrenic polymer particles Process of preparing styrenic polymer particles

1975-07-17

1978-05-23

Henderson, Christopher A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25B, 260881, 260884, 260885, 526 80, 526200, 526201, C08F25702, C08F21210, C08F 226, C08F 230

Patent

active

040910547

ABSTRACT:
In a suspension polymerization process of preparing styrenic polymer particles from a styrenic monomer and small particles of a styrenic polymer in a definite particle size range, styrenic polymer particles having a uniform particle size are obtained without the formation of fine polymer powders by simultaneously but separately dropwise adding to an aqueous suspension of the small particles of the styrenic polymer (1) a solution of 100 - 60% by weight of a suspension polymerization catalyst and 1 - 10% by weight of the styrenic monomer and (2) a solution of 0 - 40% by weight of the catalyst and 99 - 90% by weight of the styrenic monomer simultaneously but separately from each other.

REFERENCES:
patent: 2719143 (1955-09-01), Van Dijk
patent: 2934530 (1960-04-01), Ballast
patent: 3423351 (1969-01-01), Pierce
patent: 3440219 (1969-04-01), Wolff
patent: 3696172 (1972-10-01), Kaiho
patent: 3736273 (1973-05-01), Hatano

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