Process for production of surface-treated particulate...

Details Process for production of surface-treated particulate... Process for production of surface-treated particulate...

2007-04-10

2007-04-10

McClendon, Sanza L. (Department: 1711)

Coating processes

Particles, flakes, or granules coated or encapsulated

Resin base

C427S212000, C427S213000, C427S496000, C427S508000, C428S402000, C428S403000, C428S407000, C522S084000, C522S086000, C522S085000, C522S104000, C522S107000, C522S113000, C522S114000, C522S119000, C522S120000, C522S121000, C522S150000, C522S151000, C522S152000, C522S153000

Reexamination Certificate

active

10918507

ABSTRACT:
An object of the present invention is to provide an excellent process for production of a surface-treated particulate water-absorbent resin wherein the process adopts a surface-treatment process that can enhance the properties (which the water-absorbent resin is desired to have) to extremely high levels, and also can solve the prior problems in such as safety, and further can sufficiently carry out the treatment even at a reaction temperature near room temperature. As a means of achieving this object, the process according to the present invention for production of a surface-treated particulate water-absorbent resin is characterized by comprising the steps of: adding a treating liquid to a particulate water-absorbent resin as a base polymer, wherein the treating liquid contains a radically polymerizable compound; and then irradiating the particulate water-absorbent resin with active energy rays while fluidizing the particulate water-absorbent resin, thereby surface-treating it.

REFERENCES:
patent: 4588639 (1986-05-01), Ozono
patent: 5385983 (1995-01-01), Graham
patent: 5445284 (1995-08-01), Guest
patent: 2005/0031872 (2005-02-01), Schmidt et al.
patent: 57-44627 (1982-03-01), None
patent: 2530668 (1996-06-01), None

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