Granules for water treatment (Machine-translation by Google Translate, not legally binding)

专利摘要:
Granules for water treatment. The present invention relates to granules for shock treatment in water, especially swimming pools and spas based on fast dissolving trichloroisocyanin (TCCA). (Machine-translation by Google Translate, not legally binding)
公开号:ES2804035A1
申请号:ES201930705
申请日:2019-07-30
公开日:2021-02-02
发明作者:Lladó Jordi Junyent
申请人:Inquide S A Soc Unipersonal；
IPC主号:

专利说明:

[0002] Granules for water treatment
[0004] The present invention relates to granules for shock treatment in water, especially swimming pools and spas based on rapidly dissolving trichloroisocyanuric acid (TCCA).
[0006] Background of the invention
[0008] It is common to use dichloroisocyanuric acid (DCCA) for water treatment, for example, in European patent US5230903 a composition is described that comprises a derivative of dichloroisocyanurate and magnesium oxide and hydroxide that is used in closed water systems and has excellent stability during storage.
[0010] DCCA has been used routinely in shock therapy.
[0012] In the state of the art there are different compositions for the treatment of water that use di or trichloroisocyanuric that solve different problems, for example in the patent with publication number US3325411, the problem of the stability of these compositions is solved by adding acid boric.
[0014] Likewise, TCCA compositions have been developed that intend to obtain a rapid dissolution as defined in the application WO99 / 40162, which comprises in addition to TCCA, boric acid, sodium salts and a surfactant.
[0016] In no case have fast dissolving TCCA granules been located, therefore it is necessary to develop new fast dissolving water treatment compositions in the form of granules.
[0018] Description of the invention
[0020] The present invention develops granules comprising TCCA to perform a shock treatment in, for example, swimming pools or spas. As a shock treatment is intended a very rapid dissolution of the granules in the water. The granule of the invention dissolves completely and homogeneously, all its components are dissolved and not they leave insoluble residues, residues that can damage and / or discolor the linings of the glass of the pools or spas.
[0022] In the present invention, it has been found that the granule is the form that improves dissolution compared to other known forms such as tablets. The main component of the granule is TCCA or a salt thereof, in a percentage comprised between 27% and 95%, which will give a useful chlorine content of approximately 23% to 85%.
[0024] Regarding DCCA, the granule of the invention has a low contribution of isocyanuric acid and this is highly recommended. Isocyanuric acid is a by-product that forms from chloroisocyanide products. When isocyanuric acid dissolves in water it generates hypochlorous acid (residual chlorine), which acts as a disinfectant and isocyanuric acid, as a residue. Isocyanuric acid is a very poorly biodegradable substance that accumulates in water. Public swimming pools are limited by law the maximum concentration of isocyanuric acid up to a range of 60-85 ppm depending on the regulations of each country. In any case, above these levels, there is an overstabilization of the residual chlorine, reducing its effectiveness.
[0026] Therefore, a first aspect of the invention refers to granules for water treatment comprising the following components:
[0027] between 27% and 95% trichloroisocyanuric acid or a salt thereof;
[0028] between 40% and 4% alkali metal salts;
[0029] and between 30% and 1% cyanuric acid
[0030] where the particle size of each of the components is in a range between 0.050 mm and 0.150 mm and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range.
[0032] In the present invention the term "cyanuric acid" refers to both cyanuric acid and isocyanuric acid and their isomers.
[0034] The procedure for obtaining the granule consists of grinding each of the components to reduce and homogenize its size, the different components are mixed and finally it is compacted and granulated to obtain the granules of the invention.
[0036] A second aspect is the procedure for obtaining the granules of the invention, which comprises the steps of:
[0037] a) grinding the components that comprise the granule: tridoisocyanuric acid or a salt thereof, alkali metal salts and cyanuric acid, until the particle size of each of the components is between 0.050 mm and 0.150 mm; and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range;
[0038] b) mixing the components;
[0039] c) compacting and granulating the composition.
[0041] A final aspect of the invention is the use of the granules of the invention for the treatment of water in swimming pools and spas.
[0043] Brief description of the drawings
[0045] Figure 1 shows a graph of time in minutes versus percent dissolution of the data in Table 1 of Example 1.
[0047] Detailed description
[0049] As we have said, a first aspect of the invention refers to granules for water treatment that comprise the following components:
[0050] between 27% and 95% trichloroisocyanuric acid or a salt thereof;
[0051] between 40% and 4% alkali metal salts;
[0052] and between 30% and 1% cyanuric acid
[0053] where the size of the particles of each of the components is in a range between 0.050 mm and 0.150 mm and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range.
[0055] In particular the granule comprises trichloroisocyanuric acid. Preferably the ATCC is between 60% and 80%.
[0057] In a preferred manner the alkali metal salts are selected from: trisodium phosphate, tetrasodium phosphate, alkali metal carbonates or bicarbonates. In particular it is a mixture of sodium carbonate and bicarbonate.
[0059] Preferably the alkali metal salts are between 40% and 20%.
[0060] Cyanuric acid is preferably between 10% and 1%.
[0062] The composition can comprise one or more compounds selected from: boric acid and its salts, adipic acid and its salts, alumina sulfate, quaternary ammonium compounds, EDTA, triethanolamine, gluconic acid, citric acid.
[0064] Preferably, the granule has a particle size of each of its components between 0.090 mm and 0.140 mm.
[0066] The granules for water treatment preferably consist of the following components:
[0067] between 27% and 95% trichloroisocyanuric acid or a salt thereof;
[0068] between 40% and 4% alkali metal salts;
[0069] and between 30% and 1% cyanuric acid
[0070] where the size of the particles of each of the components is in a range between 0.050 mm and 0.150 mm and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range.
[0072] As has been said, the second aspect of the invention refers to a procedure for obtaining the granules of the invention that comprises the steps of:
[0073] a) grinding the components that comprise the granule: trichloroisocyanuric acid or a salt thereof, alkali metal salts and cyanuric acid, until the particle size of each of the components is between 0.050 mm and 0.150 mm; and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range;
[0074] b) mixing the components;
[0075] c) compacting and granulating the composition.
[0077] Preferably the granules of step c) through a sieve to obtain granules of a size between 1.5 mm and 2 mm.
[0079] Preferably the granule size is between 1.5 mm and 2 mm.
[0080] EXAMPLE 1. Comparative example of the dissolution behavior of granules with heterogeneous granulometry and granules with homogeneous granulometry
[0082] In the present example, granules with heterogeneous granulometry will be compared to grains with homogeneous granulometry.
[0084] In the example it is used as a pattern. 3 grams of 100% sodium triclosen dihydrate.
[0086] The two compositions, both of the homogeneous grain and the heterogeneous grain and the homogeneous grain are as follows; 61.1% TCCA, 29.1% sodium bicarbonate and carbonate, and 9.8% cyanuric acid. The weight of both compositions is 3g.
[0087] Raw material granulometry
[0088] Granulometry of the heterogeneous composition:
[0089] TCCA> 2mm 2% max .; <0.63mm 5% max.
[0090] You go out
[0091] Table 1. Sodium bicarbonate granulometry
[0093]
[0094] ___ _
[0096] Table 2. Sodium carbonate granulometry
[0098]
[0099] 95% of cyanuric acid has a particle size of 0.177 mm
[0101] Homogeneous grain size
[0102] TCCA, alkali metal salts and cyanuric acid between 0.090 mm and 0.110 mm.
[0104] The method used to evaluate the dissolution of the product was as follows, a 3000ml beaker was filled with 2500ml of hot water (28 ° C), keeping it constant by means of a resistance. The test is performed static (without shaking) and the beakers were placed on a colored surface to clearly distinguish if any undissolved residues remain. To this amount of water, 3g of the sample to be evaluated was added and the% dissolution was evaluated at different times, noting observations such as: effervescence, residue on the surface or at the bottom, undissolved particles, etc.
[0106] Table 3. Dissolution test
[0108]
[0111] As can be seen the dissolution is faster in the case of the homogeneous granule and problems of crumbling without dissolution are avoided.

权利要求:
Claims (7)
[1]
1. Granules for water treatment comprising the following components: between 27% and 95% tridoisocyanuric acid or a salt thereof;
between 40% and 4% alkali metal salts;
and between 30% and 1% cyanuric acid
where the size of the particles of each of the components is in a range between 0.050 mm and 0.150 mm and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range.
[2]
2. Granules according to claim 1 characterized in that the mixture of alkali metal salts is a mixture of sodium bicarbonate and sodium carbonate.
[3]
3. Granules according to any one of claims 1 to 2, characterized in that the trichloroisocyanuric acid is between 60% and 80%.
[4]
4. Granules according to any one of claims 1 to 3, characterized in that the mixture of sodium bicarbonate and sodium carbonate is between 40% and 20%.
[5]
5. Granules according to any one of claims 1 to 4, characterized in that the cyanuric acid is between 10% and 1%.
[6]
6. Procedure for obtaining granules for water treatment, comprising the steps of:
a) grinding the components that comprise the granule: trichloroisocyanuric acid or a salt thereof, alkali metal salts and cyanuric acid, until the particle size of each of the components is between 0.050 mm and 0.150 mm; and where the difference in particle size between all the particles varies between ± .0.05 mm within the defined range;
b) mixing the components;
c) compacting and granulating the composition.
[7]
7. Use of the granules defined in claims 1 to 5 for the treatment of swimming pool and spa water

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同族专利:

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公开号 | 公开日

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EP3771694A1|2021-02-03|

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ES2804035B2|2021-07-09|

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优先权:

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申请号 | 申请日 | 专利标题

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ES201930705A|ES2804035B2|2019-07-30|2019-07-30|Granules for water treatment|ES201930705A| ES2804035B2|2019-07-30|2019-07-30|Granules for water treatment|

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EP20382622.7A| EP3771694A1|2019-07-30|2020-07-10|Granules for water treatment|