| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide absorbable resin particles having no problem in that the amount of water retention decreases largely along with the increase of the amount of water absorption under a load, that is, being excellent in both of the amount of water retention and the amount of water absorption under a load. <P>SOLUTION: The absorbable resin particles are provided by including (A) crosslinked polymer particles containing (a1) a water soluble vinyl monomer and/or (a2) a hydrolyzable vinyl monomer, (a3) an internal crosslinking agent and (a4) a surface crosslinking agent as essential constituting units, and (B) lignin or its derivative, and the content of (B) the lignin or its derivative is preferably 0.1 to 30 wt.% based on the weight of (A) the crosslinked polymer particles. <P>COPYRIGHT: (C)2013,JPO&INPIT |
