WATER ABSORBENT AND PROCESS FOR PRODUCTION THEREOF

摘要

Disclosed is a water absorbent comprising a water-absorbable resin having a constituent unit derived from an unsaturated monomer containing an acid group and a water-soluble polysiloxane having a dissociable group. Preferably, the water-soluble polysiloxane has a molecular structure represented by at least any one of the following chemical formulae (1) to (4): [q(Hx Z) (R1)2N(CH2)nSiO1.5]p[CjH2j+1OSiO1.5]1-pchemical formula (1); [q(Hx Z) (R1)2N(CH2)nSiO1.5]p[CH3(CH2)mSiO1.5]1-p chemical formula (2); [q(Hx Z) (R1)2N(CH2)nSiO1.5]p[R2SiO1.5]1-p chemical formula (3); and [q(Hx Z) (R1)2N(CH2)nSiO1.5]p[R3NH(CH2)nSiO1.5]1-p chemical formula (4). It becomes possible to provide a nonconventional water absorbent by using a compound having a polysiloxane structure.