Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Nitrogen heterocycle
Reexamination Certificate
2005-02-08
2005-02-08
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Solid synthetic organic polymer as designated organic active...
Nitrogen heterocycle
C424S405000, C424S078370, C424S489000, C424S497000
Reexamination Certificate
active
06852312
ABSTRACT:
Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-5-(4′-vinylphenyl)hydantoin, poly-1,3-dibromo-5-methyl-5-(4′-vinylphenyl)hydantoin, and their monohalogenated alkali metal salts and protonated derivatives have been prepared as porous beads by use of highly crosslinked polystyrene beads as starting materials. The porous beads will be useful in water and air disinfection applications when employed in cartridge filters and carafes (for water), as well as for controlling noxious odor when mixed with absorbent materials in items such as disposable diapers, incontinence pads, bandages, sanitary napkins, pantiliners, mattress covers, shoe inserts, sponges, animal litter, carpets, fabrics, and air filters or the like.
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Chen Yongjun
Worley Shelby D.
Auburn University
Fubara M B
Gardner & Groff, P.C.
Page Thurman K.
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