Patent Number: 7,786,182

Title: Method for production of water absorbing agent

Abstract: The present invention provides a method for producing a water absorbing agent which excels in water absorption properties. In detail, the present invention provides a method for the production of a water absorbing agent, comprising a) a step of mixing a water absorbing resin, water, and a mixing aid without adding a water-soluble radical polymerization initiator and an ethylenically unsaturated monomer and b) a step of irradiating the resultant mixture with ultraviolet rays while keeping the mixture with flowed state.

Inventors: Iwamura; Taku (Hyogo, JP), Mitsukami; Yoshiro (Hyogo, JP)

Assignee: Nippon Shokubai Co., Ltd.

International Classification: B29C 71/04 (20060101); C08F 290/14 (20060101); C08G 18/62 (20060101)

Expiration Date: 8/31/12018