Antimicrobial compositions and eyewear

A composition comprises amorphous calcium phosphate glass particles dispersed in a polymer comprising cellulose acetate propionate, polycarbonate, or acrylonitrile-butadiene-styrene (ABS), wherein the glass particles contain silver oxide and/or silver sulfadiazine. Preferably, the composition compri...

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Bibliographische Detailangaben
Hauptverfasser:	Daniel Matthew Thorn, James Gary Conway
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FISHING FORESTRY GLASS HUMAN NECESSITIES HUNTING HYGIENE JOINING GLASS TO GLASS OR OTHER MATERIALS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL MINERAL OR SLAG WOOL ORGANIC MACROMOLECULAR COMPOUNDS PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS THEIR PREPARATION OR CHEMICAL WORKING-UP TRAPPING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A composition comprises amorphous calcium phosphate glass particles dispersed in a polymer comprising cellulose acetate propionate, polycarbonate, or acrylonitrile-butadiene-styrene (ABS), wherein the glass particles contain silver oxide and/or silver sulfadiazine. Preferably, the composition comprises 1500-4000 ppm silver oxide and/or silver sulfadiazine. The molecular weights of cellulose acetate propionate, polycarbonate, and ABS may be 1000-3000, 150-400, and 100-350 g/mol, respectively. Another polymer may be included, especially an elastomer like ethylene-vinyl acetate. The composition is typically antimicrobial. Articles comprising the composition are also disclosed, which may be spectacle cases comprising ABS or eyewear, such as spectacles, sunglasses, or safety glasses, having frames comprising cellulose acetate propionate or polycarbonate. A method of manufacturing such articles comprises dispersing the glass particles containing silver oxide and/or silver sulfadiazine into a carrier to form a dispersion, blending the dispersion into the polymer to form a blend, and shaping the blend, e.g. by injection moulding.