| abstract |
The present invention relates to a method for producing an absorbent (water absorbent) resin, and an absorbent resin obtained thereby, and more particularly to a method for producing a water absorbent resin by reversed phase suspension polymerization, Is reduced in comparison with the water absorbent resin obtained by the prior art, and a water absorbent resin obtained by the method. More particularly, the present invention relates to a method for producing a water absorbent resin by reversed-phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a petroleum-based hydrocarbon dispersion medium, which method comprises, in the presence of a surfactant, A water-soluble ethylenically unsaturated monomer aqueous solution is added and dispersed under stirring, and then subjected to reversed-phase suspension polymerization using a radical polymerization initiator, and a water absorbent resin obtained by the method. |