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US 6,548,054 B2Granted
Biocidal polystyrene hydantoin particles
AssigneeAuburn University
InventorsShelby D. Worley, Yongjun Chen
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AssigneeAuburn University
InventorsShelby D. Worley, Yongjun Chen
Estimating the term…
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.
A biocidal hydantoin having highly crosslinked polymeric chains.
A method for making a polymer having pendant hydantoin groups, comprising treating an at least 3 percent crosslinked polystyrene with acetyl chloride, followed by ammonium carbonate and an alkali metal cyanide to provide a polystyrene polymer having pendant hydantoin groups.
A method for making a biocidal polymer particle, comprising:
A method of inactivating a halogen sensitive microorganism, comprising:
A method of inactivating a halogen sensitive microorganism, comprising:
A polystyrene having pendant hydantoin groups, wherein the polystyrene is at least 3 percent crosslinked.
A polystyrene having pendant hydantoin groups, wherein the polystyrene is at least 5 percent crosslinked.
A polymer particle, comprising an at least 3 percent crosslinked polystyrene having pendant hydantoin groups.
A polymer particle, comprising an at least 5 percent crosslinked polystyrene having pendant hydantoin groups.
A method for making a polymer having pendant hydantoin groups, comprising derivatizing an at least 3 percent crosslinked polystyrene into the polymer having pendant hydantoin groups.
A compound, comprising:
A compound, comprising:
Dependencies are inferred from the claim text.