Method for preventing gel/emulsion formation

Details Method for preventing gel/emulsion formation Method for preventing gel/emulsion formation

1987-06-19

1988-09-13

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210708, B01D 1104

Patent

active

047707828

ABSTRACT:
Elimination of gel/emulsion formation such as occurs during liquid-liquid extractions of elastomeric olefin polymers is accomplished by the introduction of a cationic polyelectrolyte into the extraction system. The removal of catalyst residues from a solution of elastomeric olefin polymers by means of aqueous extraction, which can be accompanied by gel/emulsion formation, is facilitated by the presence of a cationic polyelectrolyte such as melamine-formaldehyde resin cationic colloids whereby a useful polymer product is obtained.

REFERENCES:
patent: 4016349 (1977-04-01), McKenna
patent: 4382852 (1983-05-01), McCoy et al.
patent: 4472284 (1984-09-01), Bolhofner
Treybal, Liquid Extraction, 1963, pp. 437-440 and 452-457 relied on.

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