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
  • C11D3/395—Bleaching agents
• • 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
  • C11D3/3956—Liquid compositions

Definitions

• the present invention relates to thickened aqueous cleaning compositions, and more particularly to thickened aqueous compositions containing a C10- hypochlorite ion generator in solution.
• Thickened cleaning compositions have the advantage of better adhering to vertical or inclined surfaces than those which are not thickened, and consequently of exerting a more effective cleaning and disinfecting action on such surfaces, such as for example bowls. toilets, urinals, siphons, etc.
• hypochlorite in particular an alkaline hypochlorite and preferably sodium hypochlorite
• formulas industrial and commercial faces three types of difficulties, which are: - The physical stability of the solution in a single phase, preferably clear; - Chemical stability, that is to say the limitation of retrogradation (reduction over time of the chlorometric degree, or percentage of active chlorine); - The conservation or limitation of the variation in the viscosity of the composition, after manufacture and during storage.
• liquid hypochlorite-based cleaning compositions currently available do not provide a suitable solution to all of these problems, in particular for a high content of hypochlorite, in particular above 20 ° chlorometric.
• compositions comprising an original combination of different surfactants, namely a combination of:
• One or more surfactants chosen from: a - at least one alkyl ether sulfate (AES), in particular lauryl ether sulfate (LES), and b - at least one salt of N-alkyl, N-acyl amino acid, combined with: i). at least one AES including an LES, ii). at least one paraffin sulfonate (PS), or iii). mixtures of i) and ii).
• AES alkyl ether sulfate
• LES lauryl ether sulfate
• PS paraffin sulfonate
• - Document FR-1.521.615 which describes a stable detergent composition with hypochlorite, comprising a detergent surfactant and if necessary a hydrotropic detergent.
• the detergent surfactant can be lauryl ether sulfate
• the hydrotropic detergent can be an alkylarylsulfonate.
• the compositions are not thickened and their stability in chlorometric degrees is not convincing.
• compositions formed have only relative stability, even insufficient for a hypochlorite with a high chlorometric degree.
• liquid detergent bleaching compositions comprising an alkaline hypochlorite and a surfactant of the sulfate or carboxylate type of defined formula.
• the compositions are said to be stable and it is indicated that this would not be the case for aqueous hypochlorite compositions in which lauryl ether sulfate is present.
• compositions comprising NaOCl, an anionic surfactant, amine oxide, an electrolyte and a suspended particulate abrasive.
• anionic surfactant is preferably an alkylsulfate, an alkylbenzene sulfonate or a secondary alkane sulfonate, but that ethoxylated surfactants, insufficiently resistant to oxidation by hypochlorite, should be avoided.
• the corresponding compositions do not have a marked viscosity and have only relative stability.
• the thickening agent is a mixture of at least one amine oxide, C 10 -C 1 8 and of a C 8 -C 12 alkyl sulfate.
• compositions for which this technical solution is proposed are those having a low chlorometric degree.
• Different possibilities are mentioned for each of the two surfactants in the aforementioned two surfactant system and preference is given to a mixture of amine oxides and alkali metal soaps of fully saturated C 8 -C 18 fatty acids.
• the compositions concerned are in fact intended to contain in suspension up to 5% of their weight of insoluble solid particles.
• the thickener comprises at least one representative of each of the three classes of anionic surfactants (A), (B), (C) above. It is also clearly indicated that the problem posed, to which this composition aims to provide a solution, was specifically that of the precise adjustment of the viscosity characteristic of the hypochlorite compositions intended for unclogging pipes.
• the first object of the invention is a thickened cleaning composition
• a hypochlorite in particular an alkali metal hypochlorite
• OA long chain amine oxide
• B - one or more surfactants chosen from: a - at least one, alkyl ether sulfate (AES), in particular lauryl ether sulfate (LES), of alkali metal and: b - at least one alkali metal salt of N-alkyl , N-acyl amino acid, combined with: i).
• AES alkyl ether sulfate
• LES lauryl ether sulfate
• LES lauryl ether sulfate
• i metal salt of N-alkyl N-acyl amino acid
• long chain amine oxide is intended to mean more particularly the C 10 -C 18 alkyl di (C 1 -C 6 alkyl) amine oxides, and preferably amine oxides comprising two methyl or ethyl groups and one long-chain alkyl group between C 10 and G 18 , the distribution of which is predominantly C 12 .
• alkyl ether sulfate of which a preferred example is a lauryl ether sulfate
• these are alkali metal sulfates of an ethoxylated aliphatic alcohol. More specifically, these are compounds of formula RO (CH 2 -CH 2 O) SO 3 -M + , in which R can represent an aliphatic group having from 8 to 18 carbon atoms, preferably from 10 to 14 carbon atoms , M being an alkali metal, preferably sodium or potassium, and n being a number from 1 to 6, preferably from approximately 2 to approximately 4.
• the paraffin sulfonate component which can enter into the compositions according to the invention is formed in the practice of technical mixtures of secondary alkyl sulfonates having 10 to 20 carbon atoms per molecule, preferably at least 80% and ordinarily at least 90% of the molecules having 10 to 17 carbon atoms.
• the salts of N-alkyl, N-acyl amino acid are known surfactants which can be represented by the formula:
• the constituents of these compositions are in the proportions by weight and in the weight / weight ratios ci after:
• .OA N-alkyl, N-acyl amino acid salt ⁇ 1 (in 100% active material (MA)).
• Perfume for example 0.25% or less; the incorporation of the perfume into the composition is carried out according to techniques known to those skilled in the art.
• the hypochlorite titer is preferably from 20 to 48 ° chlorometric or more, and more advantageously from 30 to 40 ° chlorometric.
• compositions can also contain other optional additives, such as for example dyes, hydrotropes, electrolytes and the like, for which the skilled person is able to determine, on the basis of his knowledge most suitable, nature, proportions and method of introduction.
• additives such as for example dyes, hydrotropes, electrolytes and the like, for which the skilled person is able to determine, on the basis of his knowledge most suitable, nature, proportions and method of introduction.
• compositions For the preparation of these compositions, it is advisable to proceed as follows: (N.B.: if it is planned to include a perfume, it is advisable to make a premix OA + perfume).
• sodium hydroxide, water, and possibly mineral salts are added to the hypochlorite, followed by the component OA or OA. + perfume and other surfactants.
• nd means: not determined.
• the absence of a numerical indication in the column STAB.PH. means that the corresponding formulas were still stable in a single phase after more than 28 days at 40 ° C.
• an aqueous hypochlorite composition having a starting titer of 35.6 ° chloro. and comprising 3% OA at 30% (30 g./kg), 2% NaOH at 30% (20 g./kg), 0.2% fragrance (2 g./kg) and water (qs 100), had as chlorometric title: 25.8 after 7 days at 40 ° C; 21 after 14 days at 40 ° C; 17.5 after 21 days at 40 ° C; but was not thickened.

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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 (3)

Applications Claiming Priority (2)

Publications (1)

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Cited By (10)

Citations (4)

Family Cites Families (5)

• 1984
  • 1984-09-21 FR FR8414508A patent/FR2570713B1/fr not_active Expired
• 1985
  • 1985-09-20 KR KR1019860700288A patent/KR930003244B1/ko not_active IP Right Cessation
  • 1985-09-20 BE BE0/215608A patent/BE903274A/fr not_active IP Right Cessation
  • 1985-09-20 WO PCT/FR1985/000257 patent/WO1986001823A1/fr active IP Right Grant
  • 1985-09-20 IT IT22222/85A patent/IT1190392B/it active
• 1986
  • 1986-05-15 FI FI862045A patent/FI84915C/fi not_active IP Right Cessation
  • 1986-05-15 NO NO86861930A patent/NO166192C/no not_active IP Right Cessation
  • 1986-05-20 SE SE8602275A patent/SE463565B/sv not_active IP Right Cessation
  • 1986-05-21 DK DK237886A patent/DK164117C/da not_active IP Right Cessation

Patent Citations (4)

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