EP0132184A1 - Washing compositions suitable for washing dishes in washing-machines - Google Patents

Washing compositions suitable for washing dishes in washing-machines Download PDF

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Publication number
EP0132184A1
EP0132184A1 EP84401373A EP84401373A EP0132184A1 EP 0132184 A1 EP0132184 A1 EP 0132184A1 EP 84401373 A EP84401373 A EP 84401373A EP 84401373 A EP84401373 A EP 84401373A EP 0132184 A1 EP0132184 A1 EP 0132184A1
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EP
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Prior art keywords
washing
trichloroisocyanuric acid
weight
coated
sodium
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EP84401373A
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German (de)
French (fr)
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EP0132184B1 (en
Inventor
Pierre Scotte
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Chimique Des Charbonnages Sa Ste
Orkem SA
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Chimique Des Charbonnages Sa Ste
Chimique des Charbonnages SA
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395—Bleaching agents
    • C11D3/3958—Bleaching agents combined with phosphates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3749—Polyolefins; Halogenated polyolefins; Natural or synthetic rubber; Polyarylolefins or halogenated polyarylolefins
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395—Bleaching agents
    • C11D3/3955—Organic bleaching agents

Definitions

  • the present invention relates to new detergent compositions suitable for washing dishes in a washing machine, and to a process for their preparation.
  • the disinfecting agent used which releases active chlorine is generally a solid chlorinated product, most often a sodium or potassium salt of dichloroisoeyanuric acid.
  • an anhydrous sodium dichloroisocyanurate titrating 63% of active chlorine or a dichloroisocyanurate; sodium dihydrate titrating has been used. 56% active chlorine, i.e. an anhydrous potassium dichloroisocyanurate titrating 59% active chlorine, or a potassium dichloroisocyanurate monohydrate titrating 56% active chlorine, or a calcium dichloroisocyanurate tetrahydrate titrating 56% active chlorine.
  • Active chlorine is defined as the oxidizing power due to positive chlorine.
  • positive chlorine corresponds to, it should be remembered that the chlorine present in the chlorinated derivatives described above is fixed on the nitrogen atom and is found there in the form of the degree of oxidation + 1, c is C1 + .
  • C1 + a degree of oxidation + 1
  • un.ion C1 + combines with two electrons to pass to the C1 (chloride) stage.
  • Two equivalents of oxidants are released which correspond to 71 g of elemental chlorine although the atomic mass is only 35.5. This also means that an atom of C1 + has the same oxidizing power as a molecule of elementary chlorine Cl2.
  • the present invention relates to a new detergent composition suitable for washing dishes in a washing machine containing a softening agent chosen from polyphosphates, an alkalizing agent chosen from sodium salts, containing sodium metasilicate, a surfactant non-ionic and a chloroisocyanuric derivative characterized in that the chloroisocyanuric derivative used is trichloroisocyanuric acid coated with a polyethylene wax used in an amount of 0.5 to 10% by weight relative to the weight of the acid.
  • polyethylene waxes are compatible with trichloroisocyanuric acid.
  • they allow using relatively low doses to obtain good acid stabilization.
  • they are dispersible under washing conditions, that is to say in aqueous media having a temperature of 50 to 65 ° C.
  • Polyethylene waxes are made up of polyethylenes having an average molecular weight of around 2,500, a low melting point below 70 ° C, a dropping point of 70 to 80 ° C and a density of 0.86 to 0, 88. They are used in an amount of 0.5 to 10% by weight relative to the trichloroisocyanuric acid and preferably in an amount of 3 to 5% by weight. Beyond 5% of the difficulties for the implementation of the coating appear and it is necessary to adjust the conditions of the coating.
  • the laundry compositions which are the subject of the invention are produced by first coating the trichloroisocyanuric acid with the aid of polyethylene waxes.
  • This coating is carried out in any industrial mixer, such as a drum mixer, preferably a mixer provided with a heating device. It is also possible to use a rotary mixer of the concrete mixer type in which the molten wax is sprayed on the acid heated to a temperature close to 50 ° C. The processing temperature allows a good distribution of the polyethylene waxes which are solidify on cooling.
  • the wax-coated trichloroisocyanuric acid is then mixed in another mixer with the other constituents of the lye.
  • the amounts of the various constituents used for the manufacture of the new detergent compositions which are the subject of the invention are used in conventional weight ratios.
  • the softening agent chosen from polyphosphates is used in an amount of 25 to 60% by weight and preferably from 40 to 50% by weight relative to the weight of the composition.
  • the alkalizing agent chosen from sodium silicates is used in an amount of 30 to 70% by weight and preferably from 40 to 60% by weight relative to the weight of the composition. In known manner sodium silicate can be partially replaced by sodium carbonate, sodium ulfate or soda.
  • the nonionic surfactant is used in an amount of 0.5 to 4% by weight and preferably 1 amount of 1 to 3% by weight relative to the weight of the composition.
  • the trichloroisocyanuric acid coated with polyethylene waxes is used in an amount of 0.5 to 5% by weight and preferably 1 to 3% by weight relative to the weight of the composition.
  • Table 1 shows the results obtained after 80 days of storage for laundry compositions prepared either from anhydrous sodium metasilicate, or from sodium metasilicate pentahydrate and from trichloroisocyanuric acid coated with waxes. polyethylene used in variable percentages (by weight). The results concerning the remaining chlorine are expressed in percentages compared to the initial chlorine.
  • Example 1 is repeated using trichloroisocyanuric acid coated with various quantities of polyethylene waxes and the determination of the remaining chlorine is carried out after 70 days of storage.
  • Table 2 summarizes the results obtained.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

1. A washing compound suitable for washing crockery in dishwashers, comprising as a percentage by weight relative to composition : - 25 to 60% softening agent selected from polyphosphates, - 30 to 70% alkalinising agent selected from sodium salts containing sodium metasilicate, - 0.5 to 4% non ionic surface-active agent, - 0.5 to 5% coated trichloroisocyanuric acid, characterised in that the trichloroisocyanuric acid is coated using a polyethylene wax in a proportion of 0.5 to 10% by weight relative to the weight of the acid, the said wax having a mean molecular weight of approximately 2 500, a low melting point of less than 70 degrees C, a dripping point of 70 to 80 degrees C with a density of 0.86 to 0.88.

Description

La présente invention concerne de nouvelles compositions de lessive convenant pour le lavage de la vaisselle en machine à laver, et leur procédé de préparation.The present invention relates to new detergent compositions suitable for washing dishes in a washing machine, and to a process for their preparation.

Le lavage de la vaisselle en machine fait intervenir à la fois l'action détergente de la lessive et l'action mécanique de l'eau. En dehors de son action détergente, la lessive doit aussi posséder un pouvoir désinfectant et des propriétés adoucissantes de l'eau. Il est donc nécessaire que la lessive ait une forte détergence mais aussi une composition telle qu'elle ne provoque pas la formation de mousses nuisibles à l'action mécanique de l'eau. C'est pourquoi les compositions de lessive sont constituées de façon connue :

  • - d'un agent adoucissant généralement choisi dans la classe des polyphosphates. Parmi les polyphosphates utilisés, on peut citer le tripolyphosphate de sodium, l'hexamétaphosphate de sodium, le pyrophosphate de sodium, ainsi que les polyphosphates de potassium correspondants.
  • - d'un agent alcalinisant qui est constitué par un sel de sodium contenant un métasitlicate de sodium sous sa forme anhydre ou sous sa forme pentahydrate. De façon connu le silicate de sodium peut être partiellement remplacé par du carbonate de soude, du sulfate de sodium, ou de la soude,
  • - d'un agent tensio-actif non moussant du type non ionique choisi parmi les classes de produits suivants : alcools linéaires éthoxylés, condensat d'oxyde d'éthylène sur l'oxyde de propylène, oxyalcoyl amines, polyéthoxyéthers d'alcools gras, alkyl phénols éthoxylés ou esters phosphoriques d'alcools gras. De préférence, pour des raisons d'efficacité, de biodégradabilité et de coûts, on choisit un agent tensio-actif de la classe des alcools linéaires éthoxylés,
  • - et d'un agent de désinfection.
Dishwashing in the machine involves both the detergent action and the mechanical action of water. Apart from its detergent action, the detergent must also have disinfecting power and softening properties of water. It is therefore necessary that the detergent has a strong detergency but also a composition such that it does not cause the formation of foams harmful to the mechanical action of water. This is why the detergent compositions are constituted in a known manner:
  • - a softening agent generally chosen from the class of polyphosphates. Among the polyphosphates used, mention may be made of sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, as well as the corresponding potassium polyphosphates.
  • - an alkalizing agent which consists of a sodium salt containing a sodium metasitlicate in its anhydrous form or in its pentahydrate form. In a known manner, sodium silicate can be partially replaced by sodium carbonate, sodium sulphate, or soda,
  • - a non-foaming surfactant of the nonionic type chosen from the following classes of products: ethoxylated linear alcohols, ethylene oxide condensate on propylene oxide, oxyalkyl amines, polyethoxy ethers of fatty alcohols, alkyl ethoxylated phenols or phosphoric esters of fatty alcohols. Preferably, for reasons of efficiency, biodegradability and costs, a surfactant from the class of ethoxylated linear alcohols is chosen,
  • - and a disinfection agent.

L'agent de désinfection utilisé qui libère du chlore actif est généralement un produit chloré solide, le plus souvent un sel de sodium ou de potassium de l'acide dichloroisoeyanurique. Jusqu'à présent on utilisait dans la pratique, soit un dichloroisocyanurate de sodium anhydre titrant 63 % de chlore actif, soit un dichloroisocyanurate;de sodium dihydrate titrant 56 % de chlore actif, soit un dichloroisocyanurate de potassium anhydre titrant 59 % de chlore actif, soit un dichloroisocyanurate de potassium monohydrate titrant 56 % de chlore actif, soit un dichloroisocyanurate de calcium tétrahydrate titrant 56 % de chlore actif. Le chlore actif est défini comme étant le pouvoir oxydant dû au chlore positif. Pour mieux comprendre à quoi correspond le chlore positif il faut rappeler que le chlore présent dans les dérivés chlorés décrits ci-dessus est fixé sur l'atome d'azote et t'y trouve sous la forme du degré d'oxydation + 1, c'est-à-dire C1+. Lors du processus d'oxydo-réduction un.ion C1+ se combine à deux électrons pour passer au stade C1 (chlorure). Il y a libération de deux équivalents d'oxydants qui correspondent à 71 g de chlore élémentaire bien que la masse atomique ne soit que de 35,5. Ceci veut également dire qu'un atome de C1+ a le même pouvoir oxydant qu'une molécule de chlore élémentaire Cl2.The disinfecting agent used which releases active chlorine is generally a solid chlorinated product, most often a sodium or potassium salt of dichloroisoeyanuric acid. Until now, in practice, either an anhydrous sodium dichloroisocyanurate titrating 63% of active chlorine or a dichloroisocyanurate; sodium dihydrate titrating has been used. 56% active chlorine, i.e. an anhydrous potassium dichloroisocyanurate titrating 59% active chlorine, or a potassium dichloroisocyanurate monohydrate titrating 56% active chlorine, or a calcium dichloroisocyanurate tetrahydrate titrating 56% active chlorine. Active chlorine is defined as the oxidizing power due to positive chlorine. To better understand what positive chlorine corresponds to, it should be remembered that the chlorine present in the chlorinated derivatives described above is fixed on the nitrogen atom and is found there in the form of the degree of oxidation + 1, c is C1 + . During the oxidation-reduction process, un.ion C1 + combines with two electrons to pass to the C1 (chloride) stage. Two equivalents of oxidants are released which correspond to 71 g of elemental chlorine although the atomic mass is only 35.5. This also means that an atom of C1 + has the same oxidizing power as a molecule of elementary chlorine Cl2.

Parmi les autres agents de désinfection chlorés de la famille des chloroisocyanuriques, il en existe un : l'acide trichloroisocyanurique qui titre près de 91 % de chlore actif. Il serait donc avantageux de pouvoir utiliser ce composé étant donné son pourcentage élevé en chlore actif. Malheureusement, jusqu'à présent son emploi n'était pas possible car il présente une trop grande réactivité vis à vis des autres constituants des compositions de lessives en particulier vis à vis des agents tensio-actifs, ce qui rend les lessives contenant de l'acide trichloroisocyanurique instables au stockage car elles perdent à la fois des quantités importantes de chlore et de tensio-actifs par destruction mutuelle.Among the other chlorinated disinfectants in the chloroisocyanuric family, there is one: trichloroisocyanuric acid, which contains almost 91% active chlorine. It would therefore be advantageous to be able to use this compound given its high percentage of active chlorine. Unfortunately, until now its use was not possible because it has too great a reactivity with respect to the other constituents of the detergent compositions in particular with respect to surfactants, which makes detergents containing Trichloroisocyanuric acid unstable on storage because they lose both significant amounts of chlorine and surfactants by mutual destruction.

On a maintenant trouvé le moyen de stabiliser l'acide trichloroisocyanurique, en particulier de le stabiliser pour la fabrication de compositions de lessives stables au stockage convenant pour le lavage de la vaisselle en machines à laver.We have now found a way to stabilize trichloroisocyanuric acid, in particular to stabilize it for the manufacture of storage stable laundry compositions suitable for washing dishes in washing machines.

La présente invention concerne une nouvelle composition de lessive convenant pour le lavage de la vaisselle en machine à laver contenant un agent adoucissant choisi parmi les polyphosphates, un agent alcalinisant choisi parmi les sels de sodium, contenant du metasilicate de sodium, un agent tensio-actif non ionique et un dérivé chloroisocyanurique caractérisé par le fait que le dérivé chloroisocyanurique utilisé est l'acide trichloroisocyanurique enrobé à l'aide d'une cire de polyéthylène utilisée à raison de 0,5 à 10 Z en poids par rapport au poids de l'acide.The present invention relates to a new detergent composition suitable for washing dishes in a washing machine containing a softening agent chosen from polyphosphates, an alkalizing agent chosen from sodium salts, containing sodium metasilicate, a surfactant non-ionic and a chloroisocyanuric derivative characterized in that the chloroisocyanuric derivative used is trichloroisocyanuric acid coated with a polyethylene wax used in an amount of 0.5 to 10% by weight relative to the weight of the acid.

pn a trouvé que les cires de polyéthylène étaient compatibles avec l'acide trichloroisocyanurique. De plus, elles permettent en utilisait des doses relativement faibles d'obtenir une bonne stabilisation de l'acide. Par ailleurs,elles sont dispersiblea dans les conditions de lavage, c'est-à-dire dans les milieux aqueux ayant une température de 50 à 65° C.pn has found that polyethylene waxes are compatible with trichloroisocyanuric acid. In addition, they allow using relatively low doses to obtain good acid stabilization. Furthermore, they are dispersible under washing conditions, that is to say in aqueous media having a temperature of 50 to 65 ° C.

Les cires de polyéthylène sont constituées par des polyéthylènes ayant un poids moléculaire moyen d'environ 2500, un bas point de fusion inférieur à 70° C, un point de goutte de 70 à 80° C et une densité de 0,86 à 0,88. Elles sont utilisées à raison de 0,5 à 10 % en poids par rapport à l'acide trichloroisocyanurique et de préférence à raison de 3 à 5 % en poids. Au-delà de 5 % des difficultés pour la mise en oeuvre de l'enrobage apparaissent et il est nécessaire d'ajuster les conditions de l'enrobage.Polyethylene waxes are made up of polyethylenes having an average molecular weight of around 2,500, a low melting point below 70 ° C, a dropping point of 70 to 80 ° C and a density of 0.86 to 0, 88. They are used in an amount of 0.5 to 10% by weight relative to the trichloroisocyanuric acid and preferably in an amount of 3 to 5% by weight. Beyond 5% of the difficulties for the implementation of the coating appear and it is necessary to adjust the conditions of the coating.

La mise en oeuvre de quantité s supérieures à 10 % n'apporte pas d'amélioration sensible de la stabilité au stockage des compositions de lessive ; l'utilisation de quantité s inférieures à 0,5 % conduit à une stabilisation de l'acide non significative.The use of quantities greater than 10% does not bring any appreciable improvement in the storage stability of the laundry compositions; the use of amounts less than 0.5% leads to non-significant stabilization of the acid.

Les compositions de lessive, objet de l'invention sont fabriquées en réalisant préalablement l'enrobage de l'acide trichloroisocyanurique à l'aide des cires de polyéthylène. Cet enrobage est effectué dans n'importe quel mélangeur industriel, tel que mélangeur à tambour, de préférence un mélangeur muni d'un dispositif de chauffage. Il est aussi possible d'utiliser un mélangeur tournant du type bétonnière dans lequel on pulvérise la cire fondue sur l'acide chauffé à une température voisine de 50° C. La température de mise en oeuvre permet une bonne répartition des cires de polyéthylène qui se solidifient au refroidissement. L'acide trichloroisocyanurique enrobé de cire est ensuite mélangé dans un autre mélangeur avec les autres constituants de la lessivé.The laundry compositions which are the subject of the invention are produced by first coating the trichloroisocyanuric acid with the aid of polyethylene waxes. This coating is carried out in any industrial mixer, such as a drum mixer, preferably a mixer provided with a heating device. It is also possible to use a rotary mixer of the concrete mixer type in which the molten wax is sprayed on the acid heated to a temperature close to 50 ° C. The processing temperature allows a good distribution of the polyethylene waxes which are solidify on cooling. The wax-coated trichloroisocyanuric acid is then mixed in another mixer with the other constituents of the lye.

Les quantités des différents constituants utilisés pour la fabrication des nouvelles compositions de lessive, objet de l'invention, sont utilisées dans des rapports pondéraux classiques. L'agent adoucissant choisi parmi les polyphosphates est utilisé à raison de 25 à 60 % en poids et de préférence de 40 à 50 % en poids par rapport au poids de la composition. L'agent alcanisant choisi parmi les silicates de sodium est utilisé à raison de 30 à 70 % en poids et de préférence de 40 à 60 X en poids par rapport au poids de la composition. De façon connue le silicate de sodium peut être partiellement remplacé par du carbonate de soude, du ulfate de sodium ou de la soude. L'agent tensio-actif non ionique est mis en oeuvre à raison de 0,5 à 4 % en poids et de préférence 1 raison de 1 à 3 % en poids par rapport au poids de la composition. L'acide trichloroisocyanurique enrobé à l'aide de cires de polyéthylènes est employé à raison de 0,5 à 5 X en poids et de préférence 1 à 3 % en poids par rapport au poids de la composition.The amounts of the various constituents used for the manufacture of the new detergent compositions which are the subject of the invention are used in conventional weight ratios. The softening agent chosen from polyphosphates is used in an amount of 25 to 60% by weight and preferably from 40 to 50% by weight relative to the weight of the composition. The alkalizing agent chosen from sodium silicates is used in an amount of 30 to 70% by weight and preferably from 40 to 60% by weight relative to the weight of the composition. In known manner sodium silicate can be partially replaced by sodium carbonate, sodium ulfate or soda. The nonionic surfactant is used in an amount of 0.5 to 4% by weight and preferably 1 amount of 1 to 3% by weight relative to the weight of the composition. The trichloroisocyanuric acid coated with polyethylene waxes is used in an amount of 0.5 to 5% by weight and preferably 1 to 3% by weight relative to the weight of the composition.

Les exemples suivants illustrent la présente invention.The following examples illustrate the present invention.

EXEMPLE 1EXAMPLE 1

On stabilise au préalable de l'acide trichloroisocyanurique à l'aide de cires de polyéthylène de la façon suivante :

  • L'acide est chauffé à une température de 50°C puis est mis dans un mélangeur tournant. Durant la rotation du mélangeur, on pulvérise dessus à l'aide d'un pistolet des cires de polyéthylène. La température de mise en oeuvre permet une bonne répartition des cires qui se solidifient au refroidissement. Les cires de polyéthylène utilisées ont un point de fusion inférieur à 70° C, un point de gouttes de 70 à 80° C et une densité de 0,86 à 0,88. On réalise divers mélanges d'acide et de cires en mettant en oeuvre des pourcentages variables de cires de polyéthylène. Les mélanges ainsi obtenus sont utilisés pour la fabrication de compositions de lessive.
Trichloroisocyanuric acid is stabilized beforehand using polyethylene waxes as follows:
  • The acid is heated to a temperature of 50 ° C and then put into a rotating mixer. During the rotation of the mixer, polyethylene waxes are sprayed on it with a gun. The processing temperature allows a good distribution of the waxes which solidify on cooling. The polyethylene waxes used have a melting point below 70 ° C, a drop point of 70 to 80 ° C and a density of 0.86 to 0.88. Various mixtures of acid and waxes are produced using variable percentages of polyethylene waxes. The mixtures thus obtained are used for the manufacture of laundry compositions.

On prépare des lessives ayant la composition suivante (les parties sont exprimées en parties en poids) :

  • - tripolyphosphate de sodium : 50 parties,
  • - métasilicate de sodium (anhydre ou hydraté 5 H20) : 50 parties
  • - PLURAFC RA 43 (tensio-actif non ionique éthoxylé fabriqué par la Société PCUK) : 2 parties,
  • - acide trichloroisocyanurique enrobé de cires de polyéthylène : 2 parties.
Detergents are prepared having the following composition (the parts are expressed in parts by weight):
  • - sodium tripolyphosphate: 50 parts,
  • - sodium metasilicate (anhydrous or hydrated 5 H 2 0): 50 parts
  • - PLURAFC RA 43 (ethoxylated non-ionic surfactant manufactured by the company PCUK): 2 parts,
  • - trichloroisocyanuric acid coated with polyethylene waxes: 2 parts.

On réalise d'abord le pré-mélange du tripolyphosphate de sodium avec le tensio-actif non ionique dans un mélangeur de type tournant.Au bout de 20 minutes on obtient un mélange homogène. On ajoute ensuite le métasilicate dans le mélangeur et au bout de 20 minutes on ajoute l'acide trichloroisocyanurique enrobé. L'ensemble est alors laissé dans le mélangeur toûrnant pendant 20 minutes. Le pourcentage de chlore dosé par iodumétric dans la composition de lessive est alors de 1,65 X.First, pre-mix sodium tripolyphosphate with the non-ionic surfactant in a rotary type mixer. After 20 minutes, a homogeneous mixture is obtained. The metasilicate is then added to the mixer and after 20 minutes the coated trichloroisocyanuric acid is added. The whole is then left in the roasting mixer for 20 minutes. The percentage of chlorine dosed by iodumetric in the detergent composition is then 1.65 X.

La composition de lessive ainsi obtenue est mise dans des sacs plastiques fermés par un lien non hermétique. Les sacs sont stockés dans une étuve à ambiance contrôlée dans les conditions suivantes :

  • - température : 42° C,
  • - humidité relative : 85 X
The composition of detergent thus obtained is put in plastic bags closed by a non-hermetic link. The bags are stored in a controlled atmosphere oven under the following conditions:
  • - temperature: 42 ° C,
  • - relative humidity: 85 X

Des échantillons sont prélevés après une durée de stockage comprise entre 2 et 3 mois et le chlore restant est analysé'par iodométrie. Le tableau 1 indique les résultats obtenus après 80 jours de stockage pour des compositions de lessive préparées soit à partir de métasilicate de sodium anhydre, soit à partir de métasilicate de sodium pentahydrate et à partir d'acide trichloroisocyanurique enrobé à l'aide de cires de polyéthylène utilisées dans des pourcentages (en poids) variables. Les résultats concernant le chlore restant sont exprimés en pourcentages par rapport au chlore initial.

Figure imgb0001
Samples are taken after a storage period of between 2 and 3 months and the remaining chlorine is analyzed by iodometry. Table 1 shows the results obtained after 80 days of storage for laundry compositions prepared either from anhydrous sodium metasilicate, or from sodium metasilicate pentahydrate and from trichloroisocyanuric acid coated with waxes. polyethylene used in variable percentages (by weight). The results concerning the remaining chlorine are expressed in percentages compared to the initial chlorine.
Figure imgb0001

EXEMPLE 2EXAMPLE 2

L'exemple 1 est répété en mettant en oeuvre de l'acide trichloroisocyanurique enrobé avec diverses quantités de cires de polyéthylène et le'dosage du chlore restant est réalisé après 70 jours de stockage. Le tableau 2 résume les résultats obtenus.

Figure imgb0002
Example 1 is repeated using trichloroisocyanuric acid coated with various quantities of polyethylene waxes and the determination of the remaining chlorine is carried out after 70 days of storage. Table 2 summarizes the results obtained.
Figure imgb0002

Claims (4)

1) Nouvelle composition de lessive convenant pour le lavage de la vaisselle en machine à laver, contenant un agent adoucissant choisi parmi les polyphosphates, un agent alcalinisant choisi parmi les sels de sodium contenant du métasilicate de sodium, un agent tensio-actif non ionique et un dérivé chloroisocyanurique caractérisé par le fait que le dérivé chloroisocyanurique utilisé est l'acide trichloroisocyanurique enrobé à l'aide d'une cire de polyéthylène utilisée à raison de 0,5 à 10 % en poids par rapport au poids de l'acide.1) New detergent composition suitable for washing dishes in a washing machine, containing a softening agent chosen from polyphosphates, an alkalizing agent chosen from sodium salts containing sodium metasilicate, a nonionic surfactant and a chloroisocyanuric derivative characterized in that the chloroisocyanuric derivative used is trichloroisocyanuric acid coated with a polyethylene wax used in an amount of 0.5 to 10% by weight relative to the weight of the acid. 2) Nouvelle composition selon la revendication 1. caractérisée par le fait que l'acide trichloroisocyanurique est enrobé à l'aide d'une cire de polyéthylène utilisée à raison de 3 à 5 X en poids.2) New composition according to claim 1. characterized in that the trichloroisocyanuric acid is coated with a polyethylene wax used in an amount of 3 to 5 X by weight. 3) Procédé de préparation des nouvelles compositions de lessive convenant pour le lavage de la vaisselle en machine à laver caractérisé par le fait que l'on enrobe au préalable l'acide trichloroisocyanurique à l'aide des cires de polyéthylène et que l'acide trichloroisocyanurique enrobé est ensuite mélaagé aux autres constituants de la lessive.3) Process for the preparation of new laundry compositions suitable for washing dishes in a washing machine, characterized in that the trichloroisocyanuric acid is coated beforehand with polyethylene waxes and that trichloroisocyanuric acid coated is then mixed with the other constituents of the detergent. 4) Procédé de préparation de nouvelles compositions de lessive selon la revendication 3. caractérisé par le fait que l'on pulvérise la cire fondue sur l'acide trichloroisocyanurique chauffé à 50° C.4) Process for the preparation of new laundry compositions according to claim 3. characterized in that the molten wax is sprayed on trichloroisocyanuric acid heated to 50 ° C.
EP84401373A 1983-07-08 1984-06-28 Washing compositions suitable for washing dishes in washing-machines Expired EP0132184B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401373T ATE24015T1 (en) 1983-07-08 1984-06-28 DETERGENT COMPOSITIONS SUITABLE FOR CLEANING DISHES IN WASHING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8311426A FR2548683B1 (en) 1983-07-08 1983-07-08 NEW LAUNDRY COMPOSITIONS SUITABLE FOR WASHING DISHWASHER IN A WASHING MACHINE
FR8311426 1983-07-08

Publications (2)

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EP0132184A1 true EP0132184A1 (en) 1985-01-23
EP0132184B1 EP0132184B1 (en) 1986-12-03

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EP84401373A Expired EP0132184B1 (en) 1983-07-08 1984-06-28 Washing compositions suitable for washing dishes in washing-machines

Country Status (10)

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EP (1) EP0132184B1 (en)
JP (1) JPS6036598A (en)
AT (1) ATE24015T1 (en)
BR (1) BR8403372A (en)
CA (1) CA1235975A (en)
DE (1) DE3461546D1 (en)
DK (1) DK161204C (en)
FR (1) FR2548683B1 (en)
NO (1) NO842756L (en)
ZA (1) ZA845038B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271992A2 (en) * 1986-11-14 1988-06-22 Unilever Plc Machine dishwashing composition
US4919841A (en) * 1988-06-06 1990-04-24 Lever Brothers Company Wax encapsulated actives and emulsion process for their production
US5200236A (en) * 1989-11-15 1993-04-06 Lever Brothers Company, Division Of Conopco, Inc. Method for wax encapsulating particles
US5258132A (en) * 1989-11-15 1993-11-02 Lever Brothers Company, Division Of Conopco, Inc. Wax-encapsulated particles
EP0837123A2 (en) * 1996-10-17 1998-04-22 Ecolab Inc. Halogen bleach-containing detergent composition having improved stability, and method of making it
WO2013093877A2 (en) 2011-12-23 2013-06-27 Koninklijke Philips Electronics N.V. Encapsulation system for controlled release of a bleaching agent
WO2013128328A2 (en) 2012-02-28 2013-09-06 Koninklijke Philips N.V. System and method for whitening teeth
WO2014097053A1 (en) 2012-12-18 2014-06-26 Koninklijke Philips N.V. Enhanced tooth whitening method combining sustained release varnish with light activation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108078A (en) * 1958-04-14 1963-10-22 Colgate Palmolive Co Stabilized trichlorocyanuric acid and compositions containing same
US3703470A (en) * 1970-10-06 1972-11-21 Chemed Corp Storage stable detergent composition
US4126717A (en) * 1976-08-25 1978-11-21 Lever Brothers Company Encapsulated bleaches and methods for their preparation
EP0054094A1 (en) * 1980-12-11 1982-06-23 Eka Ab Detergent compositions stable to chlorine separation, and agents for producing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108078A (en) * 1958-04-14 1963-10-22 Colgate Palmolive Co Stabilized trichlorocyanuric acid and compositions containing same
US3703470A (en) * 1970-10-06 1972-11-21 Chemed Corp Storage stable detergent composition
US4126717A (en) * 1976-08-25 1978-11-21 Lever Brothers Company Encapsulated bleaches and methods for their preparation
EP0054094A1 (en) * 1980-12-11 1982-06-23 Eka Ab Detergent compositions stable to chlorine separation, and agents for producing same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271992A2 (en) * 1986-11-14 1988-06-22 Unilever Plc Machine dishwashing composition
EP0271992A3 (en) * 1986-11-14 1989-03-08 Unilever Plc Machine dishwashing composition
US4919841A (en) * 1988-06-06 1990-04-24 Lever Brothers Company Wax encapsulated actives and emulsion process for their production
US5200236A (en) * 1989-11-15 1993-04-06 Lever Brothers Company, Division Of Conopco, Inc. Method for wax encapsulating particles
US5258132A (en) * 1989-11-15 1993-11-02 Lever Brothers Company, Division Of Conopco, Inc. Wax-encapsulated particles
EP0837123A2 (en) * 1996-10-17 1998-04-22 Ecolab Inc. Halogen bleach-containing detergent composition having improved stability, and method of making it
EP0837123A3 (en) * 1996-10-17 1998-04-29 Ecolab Inc. Halogen bleach-containing detergent composition having improved stability, and method of making it
WO2013093877A2 (en) 2011-12-23 2013-06-27 Koninklijke Philips Electronics N.V. Encapsulation system for controlled release of a bleaching agent
WO2013128328A2 (en) 2012-02-28 2013-09-06 Koninklijke Philips N.V. System and method for whitening teeth
WO2014097053A1 (en) 2012-12-18 2014-06-26 Koninklijke Philips N.V. Enhanced tooth whitening method combining sustained release varnish with light activation

Also Published As

Publication number Publication date
DK335484A (en) 1985-01-09
EP0132184B1 (en) 1986-12-03
ATE24015T1 (en) 1986-12-15
DK335484D0 (en) 1984-07-06
DE3461546D1 (en) 1987-01-15
BR8403372A (en) 1985-06-18
JPS6036598A (en) 1985-02-25
NO842756L (en) 1985-01-09
FR2548683A1 (en) 1985-01-11
DK161204B (en) 1991-06-10
CA1235975A (en) 1988-05-03
ZA845038B (en) 1985-03-27
DK161204C (en) 1991-11-25
FR2548683B1 (en) 1986-02-21

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