| abstract |
A method for preparing biocidal halogenated polystyrene hydantoins. Poly-1,3-dichloro-5-methyl- (4′-vinylphenyl) hydantoin, poly-1,3-dibromo-5-methyl-5- (4′-vinylphenyl) hydantoin, which are biocidal polymers, And their monohalogenated alkali metal salts and protonated derivatives are prepared as porous beads by the use of highly cross-linked polystyrene beads as starting materials. When used in cartridge filters and jugs (for water), porous beads are useful in sterilization applications in water and in air and include, for example, disposable diapers, incontinence pads, bandages, sanitary napkins, panty liners, When combined with absorbent materials in articles such as mattress covers, shoe inserts, sponges, animal stretchers, carpets, fabrics, and air filters, they are useful in controlling harmful odors. |