C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/66
C09K 3/00 (2006.01) C08F 220/56 (2006.01) F17D 1/16 (2006.01)
Patent
CA 1152313
ABSTRACT OF THE DISCLOSURE 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 Image , in which X is a Na+, K+ or NH? cation and Y is hydrogen or a Na+, K+ or NH? 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.
357506
Engelhardt Friedrich
Interthal Werner
Wilski Hans
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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