Polyacrylic acid (salt) -based water-absorbing resin powder water-absorbing agent and a method of manufacturing the same using the

摘要

present invention is to reduce the residual epoxy compound (in particular, glycidyl-based crosslinking agent), a water-absorbent agent composition suitable for use in sanitary materials, the absorbent articles of more water-absorbing resin content thin is to provide a water absorption capacity, high excellent safety properties such as absorbency against pressure water-absorbent agent composition, and a manufacturing method thereof. The present invention is the manufacturing method of the particulate water-absorbing agent to the surface cross-linked polyacrylic acid (salt) -based water-absorbent resin powder to a glycidyl-based crosslinking agent, a particle content of less than or more particle size 150 .mu.m 850 .mu.m of the water-absorbent resin powder and 95 wt% or more, and to provide a manufacturing method of a combination of a solid (mp 25 C. or higher) of the organic surface cross-linking agent (excluding a glycidyl-based crosslinking agent) at room temperature.