Highly crosslinked biocidal polystyrene hydantoin particles

A - Human Necessities – 01 – N

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A01N 43/76 (2006.01) A01N 59/00 (2006.01) A61F 13/15 (2006.01) A61K 31/785 (2006.01) A61L 15/46 (2006.01) C08F 257/02 (2006.01) C08F 265/10 (2006.01) C08F 267/10 (2006.01)

Patent

CA 2459300

Method for preparing biocidal halogenated polystyrene hydantoins. The biocidal polymers poly-1,3-dichloro-5-methyl-(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 carafe (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.

L'invention concerne un procédé permettant de préparer des hydantoïnes de polystyrène biocides halogénées. Les polymères biocides poly-1,3-dichloro-5-méthyl-(4'-vinylphényl)hydantoïne, poly-1,3-dibromo-5-methyl-5-(4'-vinylphényl)hydantoïne, leurs sels métalliques alcalins monohalogénés et leurs dérivés protonés ont été préparés sous la forme de billes poreuses à l'aide de billes de polystyrène hautement réticulé en tant que matériau de départ. Ces billes poreuses sont utilisées dans des applications de désinfection de l'air et de l'eau pour des filtres à cartouche et pour des carafe (pour l'eau); elles sont également mélangées à des matériaux absorbants dans des articles, tels que des couches jetables, des serviettes pour incontinents, des bandages, des serviettes hygiéniques, des protège-slips, des alèses, des garnitures intérieures de chaussures, des éponges, des litières, des tapis, des étoffes, des filtres à air, ainsi que d'autres articles similaires, afin de réguler une odeur gênante

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