Drag reducing agents

Details Drag reducing agents Drag reducing agents

1980-07-30

1983-10-04

Guynn, Herbert B.

Fluid handling

Processes

Affecting flow by the addition of material or energy

252 855R, F17D 116

Patent

active

044073216

ABSTRACT:
Process for reducing the friction pressure drop of aqueous liquids and suspensions in turbulent or pulsating flow by adding from 1 to 1,000 ppm of linear random copolymers of the following formula I as drag reducing agents ##STR1## in which X is a Na.sup.+, K.sup.+ or NH.sub.4.sup.+ cation and Y is hydrogen or a Na.sup.+, K.sup.+ or NH.sub.4.sup.+ cation, and in which a, b, c and d represent the proportional weight ratios of the comonomers in % and a is in the range of from 30 to 98, b from 0 to 20, c from 0 to 25 and d from 0 to 45, however, wherein the sum of the portions of b and c must be at least 2, the said copolymers being obtained in the manufacturing process in the form of aqueous and dimensionally stable jellies capable of being cut, while retaining their solubility in water.

REFERENCES:
patent: 3254719 (1966-06-01), Root
patent: 3679000 (1972-07-01), Kaufman
patent: 3768565 (1973-10-01), Persinski et al.
patent: 3779917 (1973-12-01), Norton et al.
patent: 4263927 (1981-04-01), Wilski et al.

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