| abstract |
(57) [Problem] To provide a water-absorbing material that does not significantly reduce blood absorption characteristics. SOLUTION: In the presence of a specific phosphate ester-based surfactant, a nonionic macromonomer (A-1) having at least one unsaturated double bond made of ethylene in a molecule and an unsaturated compound made of ethylene are provided. Containing a non-ionic water-absorbing component, having a structure in which primary particles are fused, The average particle diameter is 100 to 1000 μm, and the bulk density is 0.1 The present invention relates to a water-absorbent material comprising water-absorbent resin particles of up to 0.6 g / ml. |