Alkali metal acrylate polymer excellent in salt solution...

Details Alkali metal acrylate polymer excellent in salt solution... Alkali metal acrylate polymer excellent in salt solution...

C - Chemistry, Metallurgy

08

J

402/280, 252/31,

C08J 3/24 (2006.01) C08F 2/32 (2006.01) C08F 20/06 (2006.01) C08F 220/06 (2006.01)

Patent

CA 1166792

ABSTRACT OF THE DISCLOSURE An alkali metal acrylate polymer obtained by suspending an aqueous solution of acrylic acid and an alkali metal acrylate in an alicyclic or aliphatic hydrocarbon solvent containing a surfactant having an HLB value of 8-12 and subjecting the suspension to inverse suspension polymerization in the presence of a water-soluble radical polymerization initiator has a much higher water-absorbency and particularly salt solution-absorbency than known ones. If said polymer is crosslinked with a crosslinking agent, its stability in the fluid-absorbed state for a long period of time is improved and the absorption rate when absorbing water is also improved.

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