| 摘要 |
PROBLEM TO BE SOLVED: To provide an absorbent resin particle suitable for easy preparation of an absorbent article that hardly allows leakage of urine etc. even in a case when a user is sitting or laying down wearing the article. SOLUTION: The absorbent resin particle contains a crosslinked polymer particle (A), whose essential component units are a water soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) as well as an internal crosslinking agent (b), and a hydrophobic resin particle (B), and has following characteristics, i.e. (a) kinematic friction (F) is 1,000-4,000 mJ, (b) surface tension (T) of the extract liquid is 65-72 mN/m, and (c) an absorbed amount of (S) of physiological salt solution after 1 min is 10-60 g/g. It is desirable that the content of the hydrophobic resin particle (B) based on the weight of the crosslinked polymer particle (A) is 0.01-1, and also desirable is that the hydrophobic resin particle (B) is a thermoplastic resin particle having a softning point of 50-180°C or a natural wax particle having a softning point of 50-180°C. COPYRIGHT: (C)2010,JPO&INPIT
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