Surface-crosslinking process for a water-absorbent resin particles with the ultraviolet light and a Bronsted acid

摘要

Topic The method of producing the SAP particle which possesses uniform surface building a bridge which it is distributed without unevenness is offered.SolutionsThe process which prepares the water absortion power resin particle which a) possesses the surface and the core, 60 mols % possesses super degree of neutralization; b) the process which adds the burensutetsudo acid above 1 or 2 kinds on the surface of the aforementioned water absortion power resin particle; The process which applies the ultraviolet ray which adds the radical formation medicine molecule to the surface of the aforementioned water absortion power resin particle c1) process or c2 which applies the vacuum ultraviolet ray which possesses the wave length 100 - 200nm to the aforementioned water absortion power resin particle) in addition to the aforementioned burensutetsudo acid, possesses the wave length 201 - 400nm to the aforementioned water absortion power resin particle, no process; It includes, the above-mentioned topic is solved by the surface building a bridge method of the water absortion power resin particle.