Water-absorbent agents for low ph applications

Details Water-absorbent agents for low ph applications Water-absorbent agents for low ph applications

C - Chemistry, Metallurgy

09

K

31/80.1

C09K 3/32 (2006.01)

Patent

CA 1251631

ABSTRACT OF THE DISCLOSURE This invention is directed to a process for absorbing water in the form of an aqueous medium having a pH of less than 4. The process comprises contacting said aqueous medium with a water-swellable polymer comprising an alkali metal sulphonic acid salt containing polyelectrolyte which is crosslinked in an amount sufficient to provide swellability to said polyelectrolyte. For example, a crosslinked polymer containing polymerized acrylamide and sodium 2-acrylamide-2-methylpropane sulfonate can be used to remove acidic water from, for example, fuels, battery casings.

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