초록 ▼

The invention is surface crosslinked particles of water absorbing resin comprising particles of a carboxyl containing water-absorbent resin; wherein the particles of the carboxyl containing water-absorbent resin are crosslinked at or near the particle surface by a polyhydroxy compound capable of rea

The invention is surface crosslinked particles of water absorbing resin comprising particles of a carboxyl containing water-absorbent resin; wherein the particles of the carboxyl containing water-absorbent resin are crosslinked at or near the particle surface by a polyhydroxy compound capable of reacting with the carboxyl moieties of the water-absorbent resin, and the particles have coated on or bound to the surface a nonionic surfactant having an HLB of from 3 to 10. Additionally a process for the preparation of such surface crosslinked and surfactant coated absorbent resin particles is disclosed. Further disclosed is a water-absorbent structure comprising a synthetic or natural fiber or paper based woven or nonwoven carrier structure and surface crosslinked and surfactant coated water-absorbent resin particles of this invention.

대표청구항 ▼

Surface crosslinked particles of water-absorbent resin comprising a crosslinked carboxyl containing, solution polymerized, water-absorbent resin wherein the resin comprises a polymer of acrylic or methacrylic acid in which from about 50 to about 99 percent of the carboxyl moieties are neutralized; w

Surface crosslinked particles of water-absorbent resin comprising a crosslinked carboxyl containing, solution polymerized, water-absorbent resin wherein the resin comprises a polymer of acrylic or methacrylic acid in which from about 50 to about 99 percent of the carboxyl moieties are neutralized; wherein the crosslinked carboxyl containing water-absorbent resin is crosslinked at or near the particle surface by a nonionic surfactant which is a polyethoxylated sorbitol-lanolin derivative having an HLB of from 3 to 10, in the presence of from about 0.01 to about 10 parts by weight of a polyhydroxy compound based on 100 parts of the water-absorbent resin, the polyhydroxy compound being capable of reacting with the carboxyl moieties which is glycerol or sorbitol and the water-absorbent resin particles have coated or bound on their surface from about 0.01 to about 2.0 parts by weight of the surfactant based on 100 parts of the water-absorbent resin the nonionic surfactant.