FIELD: chemistry.
SUBSTANCE: invention pertains to obtaining a water absorbing agent in form of particles for a thin absorbing substrate. The water absorbing agent in form of particles with irregular shape after grinding consists of a surface cross-bonded water absorbing resin, obtained through polymerisation with formation of transverse bonds of unsaturated monomer, containing acrylic acid and/or its salt. The agent contains agglomerated particles and can retain liquid after centrifugal treatment (CRC) in a normal saline solution, constituting not less than 32g/g. Its average mass particle size (D50) ranges from 200 to 400 mcm. Particles with diameter less than 600 mcm and not less than 150 mcm range from 95 to 100 wt %.
EFFECT: when using the given water absorbing agent in form of particles, absorbing products which have small irregular surfaces after absorption of water and with excellent liquid penetration properties can be obtained.
22 cl, 1 dwg, 9 tbl, 23 ex
