Agent and method for deoiling sand and rock masses

Details Agent and method for deoiling sand and rock masses Agent and method for deoiling sand and rock masses

1982-09-23

1984-05-29

Henderson, C. A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

166275, 252 855D, C08F22800

Patent

active

044516312

ABSTRACT:
Sand or rock masses containing mineral oil are deoiled with a deoiling agent containing an aqueous solution of a water-soluble copolymer which is a random distribution of 5 to 60% of weight of units of the formula ##STR1## 2 to 40% by weight of units of the formula ##STR2## and 38 to 93% by weight of units of the formula ##STR3## and partial hydrolysates thereof, wherein when R.sup.1 is hydrogen, R.sup.2 is hydrogen, methyl or ethyl, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- or a direct bond, and X.sup..sym. is a cation; when R.sup.1 and R.sup.2 are identical or different, each is hydrogen, methyl, ethyl or, together are trimethylene, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- and X.sup..sym. is cation.

REFERENCES:
patent: 4048077 (1977-09-01), Engelhardt
patent: 4309523 (1982-01-01), Engelhardt
patent: 4364431 (1982-12-01), Saidi

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