Method of treating water-in-oil dispersions

Details Method of treating water-in-oil dispersions Method of treating water-in-oil dispersions

1982-03-17

1983-12-13

Griffin, Ronald W.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

210924, 210925, 523334, 523335, 523336, 523339, 524917, C02B 902

Patent

active

044205732

ABSTRACT:
A method of treating salt water-in-oil dispersions comprises mixing with the dispersion a latex of a rubber having a high wet gel strength. The incorporation of the latex into the dispersion causes exudation of water from the dispersion with resulting thickening. If sufficient latex is used the dispersion may be transformed into a solid. Suitable rubbers include natural rubber, polychloroprene rubber, butadiene acrylonitrile rubber, styrene butadiene rubber and poly (methyl methacrylate) graft natural rubber.
The tackiness of solids formed using for example a natural rubber latex can be reduced by using in addition to the natural rubber latex, a latex of a low or zero wet gel strength polymer e.g. PVC, poly (vinyl acetate) or polystyrene. The effectiveness of the method of treatment may be improved by the use of a suitable compatible solvent e.g. toluene or a filler such as a clay filler.

REFERENCES:
patent: 1735547 (1929-11-01), Reel et al.
patent: 1887774 (1932-11-01), Meinzer
patent: 2955096 (1960-10-01), White
patent: 3131160 (1964-04-01), Alexander et al.
patent: 3536615 (1970-10-01), Bunn
patent: 4052353 (1977-10-01), Scanley
patent: 4206080 (1980-06-01), Sato et al.
patent: 4265673 (1981-05-01), Pace et al.

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