Suspension polymerization process

Details Suspension polymerization process Suspension polymerization process

1975-01-02

1976-06-08

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 80, 526 88, 526202, 526329, 526347, C08F 218, C08F 220

Patent

active

039621979

ABSTRACT:
A non-continuous suspension polymerization process for the production of finely-divided, low molecular weight polymeric particles of an aryl monomer is carried out in a heated aqueous suspension media at a polymerization temperature above the glass transition temperature of the desired polymer. The monomer reactants and the polymerization initiator are substantially simultaneously introduced into the heated suspension media at a slow, substantially continuous rate over a time within the range of from 20 to about 85 percent of the total polymerization reaction time. The suspension media is subjected to high-rate shearing throughout the reaction.

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patent: 3462380 (1969-08-01), Ronden et al.
patent: 3629211 (1971-12-01), Nozaki
patent: 3634251 (1972-06-01), Maeda et al.
patent: 3753909 (1973-08-01), Hulse et al.

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