FR2982854A1 - Double-layered pellet, useful for treating water in swimming pool, comprises two layers of compacted powder product of which one includes an oxidizing compound in the form of powder and the other includes a reducing organic compound - Google Patents

Double-layered pellet, useful for treating water in swimming pool, comprises two layers of compacted powder product of which one includes an oxidizing compound in the form of powder and the other includes a reducing organic compound Download PDF

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FR2982854A1
FR2982854A1 FR1160586A FR1160586A FR2982854A1 FR 2982854 A1 FR2982854 A1 FR 2982854A1 FR 1160586 A FR1160586 A FR 1160586A FR 1160586 A FR1160586 A FR 1160586A FR 2982854 A1 FR2982854 A1 FR 2982854A1
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layer
tablet
compounds
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FR2982854B1 (en
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Philippe Gallois
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • C02F1/687—Devices for dosing solid compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Pellet comprises two layers of compacted powder product of which one includes an oxidizing compound in the form of powder and the other includes a reducing organic compound. Independent claims are included for: (1) a composition of the pellet, comprising two layers including a first layer (50-75 g) with rapid dissolution rate having 5-15 wt.% of repulsive agent absorbed in 5-50% of inert mineral matrix, 0-0.1 wt.% of colorant and 60-85 wt.% of base salt or strong acid and a second layer (175-200 g) with slow dissolution rate having 80-97 wt.% of trichloroisocyanuric acid, 1-4 wt.% of boric acid, 0-2 wt.% of copper sulfate, 2-10 wt.% of alumina sulfate and 2-10 wt.% of base salt or strong acid; and (2) manufacturing the pellet, comprising mixing the liquid organic compound with the mineral absorbent compound, mixing the compounds of first layer, introducing the compounds of first layer in a press, mixing the compounds of second layer, introducing the compounds of second layer on the compounds of the first layer, and compacting the mixture to obtain a solid, homogeneous, non-friable pellet.

Description

PASTILLE BICOUCHES DE TRAITEMENT POUR PISCINES, COMPOSITION ASSOCIEE ET PROCEDE DE FABRICATION DE LA PASTILLE La présente invention concerne une pastille bicouches de traitement pour piscines. L'invention couvre aussi des compositions associées et le procédé de fabrication de cette pastille.The present invention relates to a two-layer treatment pellet for swimming pools. BACKGROUND OF THE INVENTION The invention also covers associated compositions and the process for producing this pellet.

On connaît de nombreuses pastilles bicouches notamment des pastilles du type bi-composants avec deux couches dont une comprend un halogène et l'autre de type tampon permettant d'assurer le contrôle du pH. C'est l'objet notamment du brevet US 6 852 238 et de sa demande divisionnaire. Comme l'halogène conduit à un pH acide, le tampon permet d'équilibrer en 10 compensant par un composé basique. La demande de brevet WO 2007039659 décrit une pastille bi-composants à deux couches la première permettant un traitement de choc à base de composés cyanurés et la seconde permettant un traitement de maintenance acide, de traitement des algues et de la dureté de l'eau. 15 La demande de brevet EP 1 660 410 décrit une pastille bi-composants également avec deux couches : - Une première couche à libération rapide comprenant des actifs de la famille des hypochlorites de lithium, de calcium, des persulfates de sodium ou de potassium 20 - Une seconde couche à libération lente qui comprend un composé choisi parmi les surfactants et/ou les algicides et/ou les adoucissants.Many bilayer pellets are known, in particular pellets of the two-component type with two layers, one of which comprises a halogen and the other of buffer type making it possible to ensure the control of the pH. This is the object in particular of US Patent 6,852,238 and its divisional application. Since halogen leads to an acidic pH, the buffer makes it possible to balance by compensating with a basic compound. Patent application WO 2007039659 describes a two-layer two-layer pellet first allowing a shock treatment based on cyanide compounds and the second allowing acid maintenance treatment, algae treatment and hardness of the water. Patent application EP 1 660 410 discloses a two-component pellet also with two layers: A first fast-release layer comprising active agents of the family of lithium, calcium hypochlorites, sodium or potassium persulfates. A second slow release layer which comprises a compound selected from surfactants and / or algicides and / or softeners.

Le brevet FR 2 772 615 décrit une forme galénique du type pastille bicomposants comprenant deux couches dont une première couche comprend une première substance active et dont l'autre couche comprend une matrice polymère poreuse, non biodégradable dans laquelle est dispersée une seconde substance active. Il s'agit là d'une application médicamenteuse pour la diffusion de principes actifs, sans application au traitement de l'eau de bassins notamment de piscines. Or il s'avère que ces pastilles ne donnent pas satisfaction car elles ne permettent pas un traitement de longue durée avec un traitement de choc mais 10 elles permettent seulement un entretien pendant plusieurs jours de l'eau d'une piscine. De plus, il serait souhaitable de disposer de pastilles intégrant des composés tels que des composés organiques et des composés de traitement de longue durée à base de chlore. Or le problème qui se pose est la réactivité de ces types de 15 composés entre eux. Le but de la présente invention est de proposer une pastille bi-composants bicouches dont un composant de la première couche est très réactif vis-à-vis d'au moins un composant de la seconde couche, l'une au moins des couches étant à dispersion lente et l'autre étant à dispersion rapide. 20 Plus particulièrement, l'une des couches comprend un liquide organique réducteur et l'autre couche comprend un oxydant puissant. Le but est de proposer en une seule pastille un traitement à double effet. Ainsi, la présente invention est maintenant décrite suivant un mode de réalisation particulier, non limitatif, en s'appuyant sur plusieurs exemples. 25 On sait que les traitements au chlore sont particulièrement utiles et efficaces pour lutter contre les microorganismes pathogènes. Ce chlore est consommé par les composés qu'il traite et par les effets des rayonnements Ultraviolets.Patent FR 2,772,615 describes a two-component pellet-type dosage form comprising two layers, a first layer comprising a first active substance and the other layer comprising a porous, non-biodegradable polymer matrix in which a second active substance is dispersed. This is a drug application for the diffusion of active ingredients, without application to the treatment of pool water including swimming pools. However, it turns out that these pellets are unsatisfactory because they do not allow a long-term treatment with a shock treatment but they only allow a maintenance for several days of the water of a swimming pool. In addition, it would be desirable to have pellets incorporating compounds such as organic compounds and long-term chlorine-based treatment compounds. The problem that arises is the reactivity of these types of compounds with each other. The object of the present invention is to provide a bi-component bilayer chip, a component of the first layer is very reactive vis-à-vis at least one component of the second layer, at least one layer being slow dispersion and the other being fast dispersing. More particularly, one of the layers comprises a reducing organic liquid and the other layer comprises a strong oxidant. The goal is to provide a single pellet treatment double effect. Thus, the present invention is now described according to a particular, non-limiting embodiment, based on several examples. It is known that chlorine treatments are particularly useful and effective in controlling pathogenic microorganisms. This chlorine is consumed by the compounds it processes and by the effects of ultraviolet radiation.

On utilise par ailleurs des liquides organiques notamment des composés qui présentent des particularités comme celle d'être répulsifs contre les insectes. De tels liquides organiques sont fortement réducteurs et le chlore étant fortement oxydant, il n'est pas possible de les mélanger car il se produirait une réaction violente, sauf à les introduire séparément dans le volume d'eau à traiter, ce qui est beaucoup plus contraignant pour l'utilisateur. Par contre, leurs actions fortement complémentaires nécessitent de les associer pour apporter à l'utilisateur un produit multi actions, facile d'utilisation et tout aussi efficace.Organic liquids are also used, especially compounds which have special features such as being repulsive against insects. Such organic liquids are strongly reducing and the chlorine being strongly oxidizing, it is not possible to mix them because there would be a violent reaction, except to introduce them separately into the volume of water to be treated, which is much more binding for the user. On the other hand, their highly complementary actions require associating them to provide the user with a multi-action product that is easy to use and equally effective.

Aussi, la présente invention propose de réaliser une composition d'une pastille comprenant au moins deux couches la première des couches comportant au moins un composé organique initialement liquide, choisi seul ou en combinaison de plusieurs d'entre eux, plus spécifiquement parmi les répulsifs d'insectes et la seconde couche comportant au moins un composé fortement oxydant, choisi seul ou en combinaison de plusieurs d'entre eux, notamment parmi l'acide trichloroisocyanuronique, le dichloroisocyanurate de sodium ou les donneurs de brome. Il est aussi prévu d'adjoindre des excipients comme un lubrifiant tel que l'acide borique, un algicide comme le sulfate de cuivre ou un floculent comme le sulfate 20 d'aluminium. La composition de la première couche intégrant le au moins un composé organique liquide comprend un composé absorbant, plus particulièrement un composé minéral comme par exemple de la silice en encore plus particulièrement de la silice micronisée. 25 Le composé organique liquide est absorbé par le composé absorbant lors d'une agitation prolongée dudit composé minéral en présence du au moins un composé liquide organique.Also, the present invention proposes to produce a composition of a tablet comprising at least two layers the first of the layers comprising at least one initially liquid organic compound, chosen alone or in combination of several of them, more specifically from the repellents of insects and the second layer comprising at least one strongly oxidizing compound, chosen alone or in combination with several of them, in particular from trichloroisocyanuronic acid, sodium dichloroisocyanurate or bromine donors. It is also intended to add excipients such as a lubricant such as boric acid, an algicide such as copper sulphate or a flocculant such as aluminum sulphate. The composition of the first layer incorporating the at least one liquid organic compound comprises an absorbent compound, more particularly an inorganic compound such as silica and even more particularly micronized silica. The liquid organic compound is absorbed by the absorbent compound during prolonged agitation of said inorganic compound in the presence of the at least one organic liquid compound.

Ce composé absorbant est à son tour chargé dans une matrice inerte, en l'occurrence un sel d'acide fort et de base forte, tel que du chlorure de sodium, du sulfate de sodium ou autres. La granulométrie de cette matrice inerte est avantageusement compatible avec 5 celle du composé minéral retenu. Une telle matrice inerte doit être choisie parmi les matériaux fortement solubles dans l'eau, ce qui est le cas des sels d'acide fort et de base forte, notamment le chlorure de sodium. Concernant la composition de la seconde couche, les produits sont sous forme de 10 poudre. Le procédé de fabrication consiste à presser les deux formulations en poudre, placées dans une presse pour les compacter et à obtenir une pastille solide, homogène et non friable. De préférence, la presse est une presse rotative. 15 On ad joint au moins un lubrifiant comme indiqué ci-avant pour permettre un meilleur compactage et une meilleur action de la presse. De façon connue également, il est possible de prévoir un pré-compactage de la première couche. Le galet ainsi obtenu permet d'obtenir un effet rapide du répulsif qui se libère 20 dans un délai de quelques minutes à quelques heures, par exemple en période favorable au développement d'insectes, ledit répulsif se diffusant à la surface de la piscine. Le répulsif est alors choisi parmi le géraniol ou le citronellol. Simultanément, il se produit la libération de l'oxydant à partir de la couche à 25 dissolution lente avec un effet immédiat mais qui se prolonge dans le temps sur plusieurs jours, pour éviter le développement de microorganismes et des algues tout en permettant de clarifier l'eau de la piscine.This absorbent compound is in turn loaded into an inert matrix, in this case a strong acid salt and strong base, such as sodium chloride, sodium sulfate or the like. The particle size of this inert matrix is advantageously compatible with that of the retained inorganic compound. Such an inert matrix must be chosen from materials that are highly soluble in water, which is the case for strong acid and strong base salts, especially sodium chloride. Regarding the composition of the second layer, the products are in the form of powder. The manufacturing process consists of pressing the two powdered formulations placed in a press to compact them and to obtain a solid, homogeneous and non-friable pellet. Preferably, the press is a rotary press. At least one lubricant has been added as indicated above to allow better compaction and action of the press. In a manner also known, it is possible to provide a precompaction of the first layer. The roller thus obtained makes it possible to obtain a rapid effect of the repellent which is released within a few minutes to a few hours, for example during a period favorable to the development of insects, said repellent diffusing on the surface of the swimming pool. The repellent is then selected from geraniol or citronellol. At the same time, the release of the oxidant from the slow-dissolving layer with immediate effect but which is prolonged over time over several days, to avoid the development of microorganisms and algae while clarifying the pool water.

Un premier exemple de réalisation d'une tablette conforme à la présente invention comprend : - une première couche à dissolution rapide de 50 à 75g incluant : o 5-15% en poids de répulsif absorbé dans 5-20% en poids d'une matrice minérale inerte, o 0 à 0,1% en poids de colorant, o 60-85% en poids d'un sel de base forte et d'acide fort. - Une seconde couche à dissolution lente de 175 à 200 g incluant en poids: o 80-97% d'acide trichloroisocyanurique, o 1-4% d'acide borique, o 0-2% de sulfate de cuivre, o 2-10% de sulfate d'alumine, o 2-10% de sel d'acide fort et de base forte.A first embodiment of a tablet according to the present invention comprises: a fast-dissolving first layer of 50 to 75 g including: 5-15% by weight of repellent absorbed in 5-20% by weight of a matrix inert mineral, 0-0.1% by weight of dye, o 60-85% by weight of a strong base salt and strong acid. A slow-dissolving second layer of 175 to 200 g including by weight: 80-97% of trichloroisocyanuric acid, o 1-4% of boric acid, 0-2% of copper sulphate, 2-10% % alumina sulfate, o 2-10% strong acid salt and strong base.

Un deuxième exemple de réalisation - une première couche à dissolution rapide de 50 à 75g incluant : o 2-10% en poids de fragrance absorbé dans 5-20% en poids d'une matrice minérale inerte, o 0 à 0,1% en poids de colorant, o 60-85% en poids d'un sel de base forte et d'acide fort. - Une seconde couche à dissolution lente de 175 à 200 g incluant en poids: o 80-97% d'acide trichloroisocyanurique, o 1-4% d'acide borique, o 0-2% de sulfate de cuivre, o 2-10% de sulfate d'alumine, o 2-10% de sel d'acide fort et de base forte.A second exemplary embodiment - a fast-dissolving first layer of 50 to 75 g including: 2-10% by weight of fragrance absorbed in 5-20% by weight of an inert mineral matrix, 0-0.1% by weight; dye weight, o 60-85% by weight of a strong base salt and strong acid. A slow-dissolving second layer of 175 to 200 g including by weight: 80-97% of trichloroisocyanuric acid, o 1-4% of boric acid, 0-2% of copper sulphate, 2-10% % alumina sulfate, o 2-10% strong acid salt and strong base.

Les pastilles selon la présente invention permettent ainsi de disposer dans une même pastille des produits hautement réactifs l'un par rapport à l'autre, sans qu'il y ait réaction dans le cas présent. Cette pastille unique permet un traitement unique incluant plusieurs produits a priori incompatibles entre eux, ce qui facilite le stockage pour l'utilisateur et pour les producteurs. Le dosage est aussi contrôlé car il suffit de dispenser dans l'eau le nombre préconisé de tablettes, en fonction du volume du bassin, la délivrance des principes actifs respectifs étant proportionnelle.The pellets according to the present invention thus make it possible to have in the same pellet highly reactive products with respect to each other, without any reaction in the present case. This unique pellet allows a unique treatment including several products a priori incompatible with each other, which facilitates the storage for the user and for the producers. The dosage is also controlled because it is sufficient to dispense in water the recommended number of tablets, depending on the volume of the basin, the delivery of the respective active ingredients being proportional.

La pastille obtenue est stable car le caractère réactif réducteur de l'un des composés a été masqué vis-à-vis de l'oxydant.The pellet obtained is stable because the reducing reactive nature of one of the compounds has been masked vis-à-vis the oxidant.

Claims (12)

REVENDICATIONS1. Pastille comprenant au moins deux couches compactées de produit en poudre comprenant pour l'une au moins, au moins un composé oxydant sous forme de poudre et pour l'autre au moins, au moins un composé réducteur organique.REVENDICATIONS1. A tablet comprising at least two compacted layers of powdered product comprising at least one at least one oxidizing compound in the form of a powder and at least one at least one organic reducing compound. 2. Pastille comprenant au moins deux couches selon la revendication 1, caractérisée en ce que le composé organique est sous forme liquide et absorbé par un composé minéral.2. A tablet comprising at least two layers according to claim 1, characterized in that the organic compound is in liquid form and absorbed by a mineral compound. 3. Pastille comprenant au moins deux couches selon la revendication 2, caractérisée en ce que le composé minéral est de la silice.3. A tablet comprising at least two layers according to claim 2, characterized in that the inorganic compound is silica. 4. Pastille comprenant au moins deux couches selon la revendication 3, caractérisée en ce que la silice est micronisée.4. A tablet comprising at least two layers according to claim 3, characterized in that the silica is micronized. 5. Pastille comprenant au moins deux couches selon l'une quelconque des revendications précédentes, caractérisée en ce que le composé réducteur organique est choisi, seul ou en combinaison parmi les répulsifs.5. A tablet comprising at least two layers according to any one of the preceding claims, characterized in that the organic reducing compound is chosen, alone or in combination among the repellents. 6. Pastille comprenant au moins deux couches selon la revendication 4, caractérisée en ce que les répulsifs comprennent le Géraniol et le Citronellol.6. A tablet comprising at least two layers according to claim 4, characterized in that the repellents comprise Geraniol and Citronellol. 7. Pastille comprenant au moins deux couches selon l'une quelconque des revendications précédentes, caractérisée en ce que le composé oxydant est choisi seul ou en combinaison parmi l'acide trichloroisocyanuronique, le 20 dichloroisocyanurate de sodium, les donneurs de brome.7. A tablet comprising at least two layers according to any one of the preceding claims, characterized in that the oxidizing compound is chosen alone or in combination from trichloroisocyanuronic acid, sodium dichloroisocyanurate, bromine donors. 8. Pastille comprenant au moins deux couches selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend des excipients tels que l'acide borique comme lubrifiant, le sulfate de cuivre comme algicide ou le sulfate d'aluminium comme floculent tous sous forme de poudre. 258. A tablet comprising at least two layers according to any one of the preceding claims, characterized in that it comprises excipients such as boric acid as a lubricant, copper sulphate as algicide or aluminum sulphate as flocculates all in powder form. 25 9. Composition d'une pastille selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend deux couches- une première couche à dissolution rapide de 50g à 75g incluant en poids : o 5-15% de répulsif absorbés dans 5-20% de matrice minérale inerte, o 0 à 0,1% de colorant, o 60-85% d'un sel de base forte et d'acide fort. - Une seconde couche à dissolution lente de 175 à 200g incluant : o 80-97% d'acide trichloroisocyanurique, o 1-4% d'acide borique, o 0-2% de sulfate de cuivre, o 2-10% de sulfate d'alumine, o 2-10% de sel d'acide fort et de base forte.9. Composition of a tablet according to any one of the preceding claims, characterized in that it comprises two layers - a first fast-dissolving layer of 50g to 75g including by weight: 5-15% of repellent absorbed in 5 -20% of inert mineral matrix, o 0 to 0.1% dye, o 60-85% of a strong base salt and strong acid. A slow-dissolving second layer of 175 to 200 g including: 80-97% of trichloroisocyanuric acid, o 1-4% of boric acid, 0-2% of copper sulphate, o 2-10% of sulphate of alumina, o 2-10% of strong acid salt and strong base. 10. Composition d'une pastille selon la revendication 9, caractérisée en ce que le sel de base forte et d'acide fort est choisi parmi le sulfate de sodium, le chlorure de sodium, le chlorure de calcium.10. Composition of a pellet according to claim 9, characterized in that the strong base salt and strong acid is selected from sodium sulfate, sodium chloride, calcium chloride. 11. Procédé de fabrication d'une pastille selon l'une quelconque des revendications 2 à 5, caractérisée en ce qu'il comprend les étapes suivantes : - Mélange du composé organique liquide avec le composé minéral absorbant, - Mélange des composés de la première couche, - Introduction des composés de la première couche dans une presse, - Mélange des composés en poudre de la seconde couche, - Introduction des composés de la seconde couche sur les composés de la première couche, - Compactage de façon à obtenir une pastille solide, homogène, non friable.11. A method of manufacturing a tablet according to any one of claims 2 to 5, characterized in that it comprises the following steps: - Mixture of the liquid organic compound with the inorganic compound absorbing, - Mixture of the compounds of the first layer, - Introduction of the compounds of the first layer in a press, - Mixing of the powdered compounds of the second layer, - Introduction of the compounds of the second layer on the compounds of the first layer, - Compaction to obtain a solid pellet homogeneous, not friable. 12. Procédé de fabrication d'une pastille selon l'une quelconque des revendication 8, caractérisée en ce qu'il comprend de plus une étape de pré-25 compactage de la première couche, avant introduction des composés de la seconde couche.12. A method of manufacturing a tablet according to any one of claim 8, characterized in that it further comprises a pre-compaction step of the first layer, before introduction of the compounds of the second layer.
FR1160586A 2011-11-21 2011-11-21 PASTILLE BICOUCHES FOR PROCESSING POOLS, COMPOSITION THEREOF AND PROCESS FOR PRODUCING THE PASTILLE Expired - Fee Related FR2982854B1 (en)

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ES2574332A1 (en) * 2014-12-16 2016-06-16 Ercros, S.A. Tablets for water treatment and disinfection (Machine-translation by Google Translate, not legally binding)

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EP0320980A1 (en) * 1987-12-18 1989-06-21 Hoya Corporation Use of a kit for contact lens sterilization and method for contact lens sterilization
WO1993008130A1 (en) * 1990-05-02 1993-04-29 Laboratoires Mcs-Pharma S.A. Water disinfection method and compositions therefor
US6194368B1 (en) * 1995-07-13 2001-02-27 Joh A. Benckiser, Gmbh Dishwasher product in tablet form

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Publication number Priority date Publication date Assignee Title
FR2256767A1 (en) * 1974-01-07 1975-08-01 Nat Patent Dev Corp
EP0320980A1 (en) * 1987-12-18 1989-06-21 Hoya Corporation Use of a kit for contact lens sterilization and method for contact lens sterilization
WO1993008130A1 (en) * 1990-05-02 1993-04-29 Laboratoires Mcs-Pharma S.A. Water disinfection method and compositions therefor
US6194368B1 (en) * 1995-07-13 2001-02-27 Joh A. Benckiser, Gmbh Dishwasher product in tablet form

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2574332A1 (en) * 2014-12-16 2016-06-16 Ercros, S.A. Tablets for water treatment and disinfection (Machine-translation by Google Translate, not legally binding)
WO2016096805A1 (en) * 2014-12-16 2016-06-23 Ercros, S.A. Tablets for treating and disinfecting water
US20170267560A1 (en) * 2014-12-16 2017-09-21 Ercros, S.A. Tablets for treating and disinfecting water
AU2015367768B2 (en) * 2014-12-16 2019-10-24 Ercros, S.A. Tablets for treating and disinfecting water

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