Composition for use in a water reservoir

Details Composition for use in a water reservoir Composition for use in a water reservoir

C - Chemistry, Metallurgy

02

F

C02F 5/00 (2006.01) C02F 1/42 (2006.01) C02F 1/50 (2006.01) C02F 1/56 (2006.01) C02F 5/08 (2006.01) C02F 5/10 (2006.01) C02F 5/12 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2338819

The invention relates to a composition for use in a water reservoir in kitchens or sanitary installations, which is characterized in that it consists of a base composition which becomes active substantially after it is added to a first quantity of water placed into the water reservoir; at least one particle having at least one core which contains at least one substance which substantially becomes active after the first quantity of water has been at least partly withdrawn from the water reservoir and fresh water has been added into same; and a coating which substantially fully encloses the core(s) and contains at least one compound whose solubility increases as the concentration of a specific compound in the surrounding medium decreases. The invention provides for means to prevent a significant dissolution of the coating or a significant detachment of the coating from the core(s) until fresh water has been added to the water reservoir.

L'invention concerne un composition s'utilisant dans un réservoir d'eau dans des cuisines ou des installations sanitaires. Cette composition se caractérise en ce qu'elle comprend une composition de base qui agit sensiblement après avoir été ajoutée à un premier volume d'eau dans le réservoir, et au moins une particule comportant au moins un noyau qui contient au moins une substance qui agit sensiblement après vidange au moins partielle du premier volume d'eau compris dans le réservoir, hors dudit réservoir et après apport d'eau fraîche dans le réservoir, ainsi qu'au moins une enveloppe entourant sensiblement entièrement le(s) noyau(x). Cette enveloppe comprend au moins un composé dont la solubilité augmente dans le milieu ambiant à mesure que la concentration d'un composé spécifique diminue. Il est prévu des moyens pour éviter, jusqu'à l'apport d'eau fraîche dans le réservoir, une dissolution conséquente de l'enveloppe ou une séparation conséquente de l'enveloppe par rapport au(x) noyau(x).

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