Continuous process for increasing discrete particle size of solu

Details Continuous process for increasing discrete particle size of solu Continuous process for increasing discrete particle size of solu

1980-02-19

1981-08-11

Henderson, C. A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

424 71, 528483, 528490, 528492, 528500, 528502, C08F 612, C08F 610, C08F 624

Patent

active

042835259

ABSTRACT:
In an improved process for preparing discrete particles from solution polymers in which water and neutralizing agent are added to the polymer to form a suspension, the organic solvent is removed therefrom, and the particles are collected by filtration, washing and drying, the suspension is formed by co-feeding the flowable polymer and the aqueous phase containing neutralizing agent into a reactor vessel under specified conditions; stirring the reactants; and discharging the resultant suspension from the reactor vessel, with all steps being carried out in a continuous manner. In one embodiment of the process, additional neutralizing agent, which is preferably sodium hydroxide, is added to the suspension during removal of the solvent therefrom.

REFERENCES:
patent: 3041318 (1962-06-01), Hess
patent: 3677991 (1972-07-01), Moore
patent: 3927199 (1975-12-01), Micchelli

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