Antimicrobial solid material, process for producing the...

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A01N 59/20 (2006.01) A01N 25/08 (2006.01) A01N 59/16 (2006.01) C02F 1/50 (2006.01)

Patent

CA 2201934

An antimicrobial solid material having a satisfactory antimicrobial activity for a long term against sewage in any form of circulating, static and flowing waters or contacting portions thereof and a utilizing method thereof are provided. An antimicrobial solid material as one embodiment of the present invention comprises both of an antimicrobial metal ion and an antimicrobial metal in a metal state. In general, it is believed that antimicrobial metal ions have a potent antimicrobial effect when they exist in a liquid to be treated with a certain concentration or more, but they are rapidly released and exhausted so that their antimicro-bial effects cannot last long. On the other hand, it is believed that the antimicrobial metal in a metal state does not have a prompt effect, but exhibits a certain bacterio-static and fungistatic effect continuously for a long term. Therefore, the antimicrobial solid material containing both of the antimicrobial metal ions and the antimicrobial metal in a metal state thereof has both of a potent initial antimicrobial activity and an enduring bacteriostatic and fungistatic activity.

L'invention concerne un solide antibactérien ayant une activité antibactérienne satisfaisante durable dans le traitement des eaux d'égout, quelle que soit leur forme de circulation, les eaux stagnantes et les eaux vives ou les éléments en contact avec les eaux d'égout. Un solide antibactérien contenant à la fois un métal antibactérien et ses ions constitue un exemple de solide antibactérien de ce type. On pense communément que les ions métal antibactériens ont un effet antibactérien puissant lorsqu'ils sont présents dans une concentration spécifiée dans les eaux d'égout. Mais leur effet est limité parce qu'ils sont rapidement éliminés et détruits dans les eaux d'égout, alors que les métaux antibactériens eux-mêmes, qui n'agissent certes pas rapidement, peuvent avoir un effet antibactérien continu de longue durée. C'est pourquoi ce solide antibactérien qui contient à la fois un métal et ses ions, associe un effet antibactérien initial puissant et un effet bactériostatique durable.

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