Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate
2006-08-23
2009-08-18
McClendon, Sanza L (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
C522S086000, C522S087000, C522S088000, C522S089000, C522S090000, C522S096000, C522S100000, C522S103000, C522S104000, C522S107000, C522S113000, C522S114000, C522S116000, C522S120000, C522S121000, C522S123000, C522S134000, C522S135000, C522S137000, C522S141000, C522S142000, C522S144000, C522S151000, C522S152000, C522S153000, C522S154000, C522S173000, C522S175000, C522S178000, C522S181000, C427S508000, C427S512000, C428S402000, C428S403000, C526S931000
Reexamination Certificate
active
07576138
ABSTRACT:
A method of surface cross-linking superabsorbent polymer particles using UV irradiation is provided. The method is carried out in a so-called drum reactor, which comprises a hollow drum and an irradiation source. The drum has a longitudinal axis and a cross-section. Superabsorbent polymer particles are fed into the drum and are irradiated while they move within the drum, which is rotated around its longitudinal axis. The irradiation source is provided such that the radiation emitted by the irradiation source is able to reach superabsorbent polymer particles within said drum. The irradiation source for use in the method is able to emit UV radiation of a wavelength between about 100 nm and about 200 nm.
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Flohr Andreas
Lindner Torsten
Mitsukami Yoshiro
Oliveros Esther
Colbert John P.
McClendon Sanza L
The Procter & Gamble & Company
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