N,N-Dimethylacrylamide/2-acrylamido-2-methylpropane sulfonic aci

Details N,N-Dimethylacrylamide/2-acrylamido-2-methylpropane sulfonic aci N,N-Dimethylacrylamide/2-acrylamido-2-methylpropane sulfonic aci

1981-02-06

1983-09-13

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 526287, E21B 4322

Patent

active

044041110

ABSTRACT:
A N,N-dimethylacrylamide/2-acrylamido-2-methylpropane sulfonic acid copolymer is disclosed. The copolymer is particularly suitable for use as a viscosity control agent in an aqueous composition employed to facilitate petroleum recovery from subterranean petroleum bearing formations.

REFERENCES:
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patent: 3230201 (1966-01-01), Hart et al.
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patent: 3352358 (1967-11-01), Williams
patent: 3399725 (1968-09-01), Pye
patent: 3406754 (1968-10-01), Gogarty
patent: 3467187 (1969-09-01), Gogarty
patent: 3679000 (1972-07-01), Kaufman
patent: 3804173 (1974-04-01), Jennings
patent: 4254249 (1981-03-01), Cottrell et al.
McCormick, Neidlinger, Hester, Wildman, "Improved Polymer for EOR, Synthesis & Rheology", Apr.-Jun. 1980, pp. 1-37. _

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