Process for breaking polymer-containing emulsions

Details Process for breaking polymer-containing emulsions Process for breaking polymer-containing emulsions

1974-09-30

1977-03-29

Guynn, Herbert B.

Compositions

Leather or fur treating

166305R, 252330, B01D 1704

Patent

active

040148017

ABSTRACT:
Oil and water emulsions containing a high molecular weight polymer (e.g. a partially hydrolyzed polyacrylamide) and a surfactant (e.g. monovalent cation-containing petroleum sulfonate) are broken with a de-emulsifying agent made up of a divalent cation-containing salt, e.g. CaCl.sub.2, and a strong oxidizing or reducing agent, e.g. sodium hypochlorite or hydrazine.

REFERENCES:
patent: 2064541 (1934-06-01), Hershman
patent: 2566980 (1949-11-01), Catanach et al.
patent: 2572223 (1951-10-01), Shapiro et al.
patent: 3363399 (1968-01-01), Schmauch et al.
patent: 3752233 (1973-08-01), Svaldi et al.
patent: 3858657 (1975-01-01), Haws et al.
Berkman and Egloff: Emulsions and Foams, Reinhold Pub. Corp., (1941), pp. 21-22, 286.

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