Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2011-01-25
2011-01-25
Berman, Susan W (Department: 1796)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C522S074000, C522S079000, C522S082000, C522S083000, C522S084000, C522S086000, C524S832000, C524S423000, C524S437000, C524S430000
Reexamination Certificate
active
07875362
ABSTRACT:
An absorbent member and a method for making such an absorbent member. The absorbent member includes a modified water absorbent resin having good production efficiency, absorbency against pressure, absorption speed, gel strength, and liquid permeability. The modified water absorbent resin may be made by mixing a water absorbent resin, water, and a water-soluble radical polymerization initiator without addition of an ethylenically unsaturated monomer to obtain a water absorbent resin composition, and irradiating the water absorbent resin composition with active energy rays. During irradiation, the surface water content of the water absorbent resin is at least 3.0 wt %.
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Iwamura Taku
Matsumoto Makoto
Mitsukami Yoshiro
Berman Susan W
Carter Kathleen Y.
Powell John G.
The Procter & Gamble & Company
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