Process for reversible thickening of a liquid

Details Process for reversible thickening of a liquid Process for reversible thickening of a liquid

1986-04-14

1988-04-05

Lovering, Richard D.

Compositions

Leather or fur treating

137 13, 210712, 210729, 252 8511, 252 8514, 252 8551, 252303, 252326, 252327, 406 48, 406197, B01D 1700, B01J 1300, C09K 700, F17D 116

Patent

active

047357312

ABSTRACT:
Industrial liquids containing viscoelastic surfactant compositions can be reversibly thickened and broken. For example, a thickened industrial liquid can exhibit good solids carrying capacity, and after the viscosity of the liquid is broken, using techniques such as change in pH, addition of a hydrocarbon, change in temperature, etc., the solids can be easily removed therefrom. Viscosity can be again provided to the industrial liquid without the necessity of adding substantial amounts of additional thickener.

REFERENCES:
patent: 3172910 (1965-03-01), Brace
patent: 3361213 (1968-01-01), Savins
patent: 3373107 (1968-03-01), Rice et al.
patent: 3406115 (1968-10-01), White
patent: 3775126 (1973-11-01), Babbitt et al.
patent: 3977472 (1976-08-01), Graham et al.
patent: 4071457 (1978-01-01), Meister
patent: 4221229 (1980-09-01), Dreher et al.
patent: 4430230 (1984-02-01), Satake
patent: 4456537 (1984-06-01), Oliver, Jr. et al.
S. Gravsholt: "Viscoelasticity in Highly Dilute Aqueous Solutions of Pure Cationic Detergents", J. of Coll. and Interface Sci., 57 (3), pp. 575-577 (1976).
Zakin et al.: "Variables Affecting Drag Reduction by Nonionic Surfactant Additives", Chem. Eng. Commun., 23, 77-88 (1983).

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