| 摘要 |
The present invention relates to a preparation method for a super absorbent resin. The preparation method for the super absorbent resin according to one aspect of the present invention comprises the steps of: obtaining a ground hydrogel polymer in the process of preparing the super absorbent resin; thereafter injecting, into the ground polymer, a surface cross-linking solution comprising a surface cross-linking agent, alcohol, and ionic liquid; and crosslinking the surface of the ground polymer. The preparation method for the super absorbent resin uses the ionic liquid, and thus, if a lower alcohol is not used or is used together with the ionic liquid, is capable of minimizing the amount of the alcohol, thereby having the effects of reducing costs and reducing additional drying treatment, and furthermore is capable of preparing the super absorbent resin having an excellent product physical property by controlling swelling of a gel. |
