Classifications

• • 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
  • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
• • 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/75—Amino oxides
• • 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
  • C11D17/0047—Detergents in the form of bars or tablets
  • C11D17/0056—Lavatory cleansing blocks
• • 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/40—Dyes ; Pigments

Definitions

• the present invention relates to a product for the automatic cleaning of WC bowls and more particularly to a product intended to be dispensed with flushing water and contained for this purpose in the toilet flush tank or, but with lower advantages, in a device intended for the toilet bowl
• Periodic cleaning of toilet bowls is traditionally done manually, outside of flushing, with the help of an acid descaling product, which the user uses several times a week.
• automatic cleaning blocks for W.C. intended to be fixed in the bowl or in the flush tank; these blocks mainly provide a continuous fragrance and coloring of the water in the siphon of the bowl, but they have only a very weak cleaning function due to the very high dilution of the active materials which they release in the water flushing.
• the cleaning products can be introduced into the dispensing device, either directly by casting, at a slightly elevated temperature, with a composition which becomes pumpable at a temperature above room temperature and becomes substantially solid again at room temperature, or indirectly at from pellets, a block, or any other solid form previously prepared by extrusion, extrusion or any other suitable technique.
• the device thus constituted essentially comprises cleaning agents, fillers and at least one dye, as well as possibly disinfecting agents, perfumes and emulsifying agents.
• the blocks meeting these conditions if they effectively impart a pleasant coloring to the water of the siphon, have only a weak cleaning action. They do not prevent dirt from settling on the bowl and especially the siphon of the bowl; However, the movement of the water then flowing from the flush is insufficient to remove this dirt, even if this water contains a detergent product known as a cleaner released by the block.
• the dye in the formulas of cleaning compositions for toilet bowls intended to be incorporated in a device for a flush tank comprising an oxygenated disinfectant, the dye must be a particular dye, pure, and not only technical, so that the coloring of the liquid medium in the siphon has a suitable stability in the presence of the oxidants which are also there.
• the composition which it relates comprises at least one amine oxide, at least one suitable dye and a pH-regulating agent, the composition having to be such that the pH of the aqueous medium of the cuvette containing it is of about 6.3 ⁇ 0.5.
• hypochlorite does have a whitening power greater than that of acid
• hypochlorous acid which is the most active as regards bactericidal activity.
• the pH recommended according to the invention is therefore doubly favorable in the field of application considered, since it is then effectively sought to take advantage of the bactericidal activity, while on the contrary a bleaching power would harm the stability of the dye. In addition, we do not have to suffer from a possible release of chlorine, which would only occur at a pH below 3.
• the composition according to the invention is in the form of a block, obtained either by casting a solidifiable fluid composition and solidification, preferably by cooling, or by extrusion, by extrusion or by any other forming means.
• the composition comprises, in addition to the essential functional compounds indicated above, components and / or fillers, capable of imparting to it, depending on the circumstances, the fusibility, the hardness, the solubity and the plasticity desired.
• this composition also comprises at least one nonionic compound and / or at least one anionic compound and / or perfumes.
• an anionic detergent such as for example an alkylbenzene sulfonate (ABS), a paraffin sulfonate (PS), and / or a methyl ester of acid, can be used as a substrate for forming a block of the above-mentioned composition.
• ABS alkylbenzene sulfonate
• PS paraffin sulfonate
• methyl ester of acid a substrate for forming a block of the above-mentioned composition.
• anionic detergent is meant both a single compound and a mixture of two or more of two products with anionic detergent activity. Even more advantageously, it is possible to combine, in proportions that a person skilled in the art is able to choose conveniently after simple routine tests, with this anionic detergent at least one nonionic compound, preferably at least one polyethylene glycol ( PEC) having a molecular mass of between approximately 10,000 and approximately 100,000, and more particularly between approximately 10,000 and approximately 50,000. All of these anionic and nonionic compounds then form the substrate, into which it is incorporated by means amine oxide the dye and the pH regulating agent.
• PEC polyethylene glycol
• the disinfecting product preferably a chlorinated disinfectant, which can be used in conjunction with the active composition according to the invention, can be chosen in particular from hypochlorites of alkali or alkaline earth metals, trichloroisocyanuric acid, sodium dichloroisocyanurate or potassium, chloramine and the like.
• composition according to the invention is included, in the appropriate physical form, in a dispensing device or housing intended to automatically deliver an approximately defined quantity of active elements of this composition to each flush of flushing water, a once said dispensing device or box containing the composition has been placed either on the bowl, or preferably in the flush tank.
• composition can be placed in the dispensing device either directly by pouring at a moderate temperature, above room temperature, a composition which can be poured at such a temperature, or by introducing a substantially solid tablet previously formed by extrusion, extrusion, independent mold casting or the like, or by any other suitable technique.
• a mass which can be poured and solidified on cooling comprising a composition according to the invention by bringing to about 70 ° C. a paraffin sulfonate in scales, by treating this product with a mixer until a paste is formed. and incorporating therein, still under kneading, the active components of the composition according to the invention.
• the homogeneous composition formed solidifies by cooling in the cell of the dispensing device where it was poured.
• the amine oxide can be chosen in solution in water or in a water-alcohol mixture (for example isopropanol), most often in a concentration of around 30% by weight.
• a water-alcohol mixture for example isopropanol
• the preferred proportion of amine oxide in the composition according to the invention is approximately 3% ⁇ 1.5% by weight relative to the total weight of active material of the composition.
• hypochlorous acid concentrations of hypochlorous acid are too low (from the order of a few ppm) so that one could detect one, having regard to the limits of precision of the assays. It was found that the titer varied little in 24 hours and that the cleaning composition also fulfilled its role as a disinfectant without any tangible antagonism appearing between the various components.
• the dyes to be used must above all be chosen according to their stability.
• blue dyes have been used for a long time.
• these are the dyes of families of the phthalocyanine or triaryl methane type.
• the blue dyes C 1 42 090 and 42 045 have been widely used for a long time and it is known that their coloring remains stable even in the cases where the water supplying the room where the composition containing it is used comes from public treatment stations for waters using chlorination processes.
• the FD&C Blue dye n ° (CI 42,090) is, among the blue dyes, that which exhibits the best stability with respect to oxidants.
• the pH regulator is an essential element of the composition, since it has been found that the cleaning and coloring properties of the latter result from the combination of three constituents or groups of constituents: amine oxide dye and pH regulating agent for adjustment to the pH indicated above.
• any of the anionic surfactants known or available alone or as a mixture can be used: examples are alkylbenzene sulfonates, lauryl ether sulfates, a olefin sulfonates, paraffin sulfonates, soaps, and mixtures thereof.
• alkylbenzenes sulfonates and paraffin sulfonates mixed with soaps Particular preference is given to alkylbenzenes sulfonates and paraffin sulfonates mixed with soaps.
• the proportion of anionic surfactant can vary between 0 and approximately 65% by weight relative to the total weight of the composition, it being understood that to produce a solid cleaning composition it is preferred to use approximately 50% ⁇ 15% of anionic surfactant.
• such a constituent is advantageously chosen from polyethylene glycols having a molecular mass of between approximately 10,000 and approximately 100,000.
• polyethylene glycols having a molecular mass of between approximately 10,000 and approximately 100,000.
• This use of PEG is indeed to be recommended in the case of compositions solid cleaners; however, it has been found that, if their molecular mass is less than around 10,000, the compositions obtained do not have a sufficient hardness between 0 and 40 ° C., which represents the range of possible storage temperatures for the finished products, and that, for molecular weights greater than approximately 100,000, the properties of the compositions obtained meet significantly less well the requirements of duration, of fusibility and of solubility in water.
• the average molecular weight preferred for the PEG selected may be, depending on the nature of the anionic surfactant chosen. It is of course possible to use mixtures of PEGs of different molecular weights. By way of example when it is chosen to use an anionic surfactant composed of paraffin sulfonates in proportions of 30 to 60% by weight relative to the total weight of the composition, use is preferably made of either a PEG of molecular mass 20,000. , that is to say a PEG 20,000 at a rate of 60 to 95% by weight of all the PECs and the complement to 100 (i.e. between 40 and 5%) of PGE 10,000.
• the PEGs can represent between 10 and 30% approximately, preferably approximately 20%, by weight relative to the total weight of the composition.
• composition when the composition must be in the form of a solid block, the use of certain perfumes may make it preferable to use PEGs of somewhat higher molecular mass, for example 35,000 as a replacement. of all or part of the PEG 10,000 and 20,000.
• perfumes is recommended in a proportion of approximately 2 to 10, and preferably approximately 4 to 8%, by weight relative to the total weight of the composition.
• the composition according to the invention can also comprise other additives, provided that these do not disturb the activity of each of the essential constituents of the composition.
• a soap at a rate of approximately 0.5 to 5% of the total weight of the composition and / or of the salts in a proportion supplementing to 100% a weight formula comprising the other essential components indicated more high.
• Tests were carried out using W.C. used by a community to assess the performance obtained with compositions according to the invention. These performances turned out to be quite unusual, as much by the efficiency of the automatic cleaning of the bowl as by the prevention of stains of faecal origin on the bowl.
• Half of the WCs were treated with the above-mentioned compositions forming a solid block according to the invention, put in place in a suitable dispensing device, while the other half received a current automatic commercial cleaning product, giving a coloration analogous to marinade so that users cannot distinguish a difference between the two pieces of equipment.
• all other cleaning products and brushes had been eliminated, so that no untimely manual intervention would interfere with the tests.
• the WCs equipped with the current commercial product exhibited numerous traces of faecal matter, while those provided with the cleaning compositions according to the invention were, for half of them devoid of any trace of faecal matter and for the other half soiled only by very weak traces eliminable simply by a second action on the flush.
• the surface condition of the bowls treated with the commercial blocks was such that an acid descaling product had to be used to remove the scale-based soiling which had formed, while the treated bowls by the compositions according to the invention had remained clean and did not need to be descaled.
• compositions effectively made it possible to adjust the pH of the water in the siphon of the bowl in the desired range of 6.31 0.5.
• compositions a, b and c were, respectively, for compositions a, b and c of: 403, 511 and 436.
• composition according to the invention can also be in liquid form.
• a liquid composition is obtained by mixing and homogenizing approximately 3% of dye, 10% of a solution of an amine oxide at 30% in water 10% of a pH regulating agent chosen from those listed above (preferably sodium citrate), and water for the complement at 100%; the above proportions are given as a percentage by weight relative to the final composition.
• a dosing device giving approximately 0.5 to 1 ml of stock solution per flush (such a device, of known design and using the principle siphon, commonly having a mother solution capacity of 250 to 500 ml), which makes it possible to supply with a single device the supply of composition according to the invention of approximately 500 flushes.
• the choice in the composition of the compositions depends on the desired lifetimes, as well as the desired solubilities, parameters which depend on the mode of dispersion in the flush.

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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)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9290879

Family Applications (1)

Country Status (7)

Families Citing this family (16)

Family Cites Families (16)

• 1983
  • 1983-07-08 FR FR8311845A patent/FR2548682B1/fr not_active Expired
• 1984
  • 1984-07-04 DE DE8484420113T patent/DE3460617D1/de not_active Expired
  • 1984-07-04 AT AT84420113T patent/ATE21925T1/de not_active IP Right Cessation
  • 1984-07-04 EP EP84420113A patent/EP0131527B1/fr not_active Expired
  • 1984-07-06 JP JP59139179A patent/JPS6090300A/ja active Granted
  • 1984-07-06 CA CA000458325A patent/CA1271682A/fr not_active Expired - Lifetime
• 1985
  • 1985-11-08 US US06/797,182 patent/US4731223A/en not_active Expired - Lifetime

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