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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0026—Low foaming or foam regulating 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
  • C11D10/00—Compositions of detergents, not provided for by one single preceding group
  • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
• • 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
  • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
  • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
• • 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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/04—Water-soluble compounds
  • C11D3/10—Carbonates ; Bicarbonates
• • 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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
• • 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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/29—Sulfates of polyoxyalkylene ethers
• • 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
  • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

• the invention relates to pourable liquid aqueous cleaning agent concentrates which can be used both as scouring agents and in dilute form as general-purpose cleaning agents.
• Such agents are known and are based on the use of water-soluble abrasive components which have the abrasive function in concentrated media and practically dissolve in dilute media and, after use, can easily be removed from the substrate simply by rinsing with water.
• US Pat. No. 4,179,414 discloses stable pastes composed of approximately 50 to 65% by weight sodium bicarbonate, approximately 50 to 35% by weight water and approximately 5 to 20% by weight sodium chloride as well as approximately 10 to 30% by weight Ci2- Ci6 fatty acid diethanolamide, both based on the water content, are known to have an abrasive effect in concentrated form and to clean hard surfaces in diluted form. No information is given on the particle size of the sodium bicarbonate.
• EP 0 193375 A2 discloses liquid compositions of this type which contain 1.5 to 30% by weight of surfactants and, inter alia, 6 to 45% by weight of sodium bicarbonate with an average diameter of 10 to 500 ⁇ m (no further details are given ge made) can contain. The rest is water.
• aqueous agents which contain 1.5 to 40% by weight surfactants, 2.0 to 65% by weight predominantly undissolved potassium sulfate with the same particle size as above, preferably 20-300 ⁇ m, and optionally contain 0.5 to 10 wt .-% sodium chloride.
• liquid abrasives with water-soluble abrasives which contain 1.5 to 30% by weight of surfactants, about 45 to about 75% by weight of sodium bicarbonate with a small average particle size of can expressly contain less than 80 ⁇ m and more than 10% by weight of water. While most of these known cleaning agents foam too much when used and / or their abrasive effect does not reach that of the commercial standard marble powder because of too small a particle size, agents have been developed according to the invention which do not have these disadvantages.
• the viscosity of very finely divided dispersions is considerably higher than that of dispersions of coarser particles (see Examples 1 and 2). Even if the Stokes equation in the above form does not absolutely apply in systems with a high solids content, such as those according to the invention, the Stokes descent rate V is nevertheless included in the approximate equations for more concentrated systems. A higher particle radius has a destabilizing effect on the dispersion, both in terms of the radius and the lower viscosity, even in concentrated systems.
• This combination of surfactants consists essentially of alkyl polyglycol ether, alkyl sulfate, optionally alkyl ether sulfate, and soap, the alkyl polyglycol ether being a thickening agent with a narrow distribution of the ethylene oxide addition products (A.
• Behler et al, soap-oil-fat waxes, 116 , 60-68 (1990) and DE 38 17415) is used, and is also distinguished characterized by the fact that the surfactants are very readily biodegradable.
• the foam is regulated by adding the soap.
• Coconut fatty acid, isostearic acid and mixtures thereof provide particularly good values.
• Today, the lowest possible foaming is essential for the acceptance of modern household cleaning agents.
• the present invention therefore relates to pourable liquid aqueous cleaning agent concentrates containing surfactants and a water-soluble salt, which can be used in concentrated form as abrasives and diluted as general-purpose cleaning agents, which are characterized in that they a) as water-soluble salt is at least 50, preferably 50 to 65 wt .-% sodium bicarbonate microns with an average particle size of about 200 i and 100 b) from about 2 to 30, preferably about 3 to 15 wt .-% of a surfactant mixture of alkyl sulfates little FDumen ⁇ to and / or contain alkyl ether sulfates and alkyl polyglycol ethers with a narrow homolog distribution and soap.
• the low-foaming surfactant mixture consists essentially of about 0 to 13, preferably about 4 to 10% by weight of alkyl sulfates with about 8 to 22, preferably about 9 to 16, carbon atoms in the alkyl radical, about 0 to 13, preferably about 4 to 10,% by weight.
• Alkyl ether sulfates with about 8 to 18, preferably about 9 to 16 carbon atoms in the alkyl radical and about 1 to 5, preferably about 2 to 4 E0 in the molecule, about 1.5 to 8, preferably about 2 to 6 wt .-% alkyl polyglycol ethers with about 8 to 18, preferably about 9 to 16 carbon atoms in the alkyl radical and about 2 to 8, preferably about 2 to 5, ethylene oxide units (E0) in the molecule, and about 0.05 to 5, preferably about 0.5 to 3% by weight.
• alkyl (ether) sulfates and alkyl polyglycol ethers can be derived from technical alcohol mixtures, such as are obtained, for example, by high pressure hydrogenation of methyl esters based on vegetable or animal rons or by hydrogenation of aldehydes from ROELEN. see oxosynthesis receives.
• the weight ratio of alkyl (ether) sulfate to alkyl polyglycol ethers is advantageously about 10: 1 to 1:10, preferably 5: 1 to 1: 5 and in particular 3: 1 to 1: 4.
• the flow properties of the claimed cleaning agents can be increased by adding about 0 to 5, preferably from about 0.3 to 3,% by weight of polyols of the formula HO-R-0H, where R is an alkyl radical which is optionally substituted by hydroxyl groups and has about 2 to 6, preferably 2 to 4 carbon atoms, positively influence.
• the polyols include, for example, ethylene glycol, n- and iso-propylene glycols and glycerin.
• Another possible additive consists of naturally occurring polymers such as xanthan gum, other polysaccharides and / or gelatin in amounts of about 0 to 2, preferably about 0.5 to 1.8% by weight. This remarkably increases the cleaning performance of the agents.
• agents according to the invention can contain customary constituents such as inorganic or organic framework substances, for example in the form of low molecular weight dicarboxylic acids or sodium chloride, known solvents, such as hydrotropes and solvents, preservatives, other antimicrobially active substances, colorants and fragrances.
• customary constituents such as inorganic or organic framework substances, for example in the form of low molecular weight dicarboxylic acids or sodium chloride, known solvents, such as hydrotropes and solvents, preservatives, other antimicrobially active substances, colorants and fragrances.
• Sodium bicarbonate forms a buffer at pH 8.7, i.e. the pH can only be lowered when the buffer is exhausted; an increase in pH has a negative effect on the viscosity.
• solubilizers individually or as a mixture with one another, can be incorporated, for which purpose, in addition to the water-soluble organic solvents such as, in particular, low molecular weight aliphatic alcohols with 1-4 carbon atoms, also the so-called hydrotropes Substances of the lower alkyl aryl sulfonate type, for example toluene, xylene or cumene sulfonates or short chain alkyl sulfates such as octyl sulfate. They can also be in the form of their sodium and / or potassium and / or alkylamino salts.
• Water-soluble organic solvents can also be used as solubilizers, in particular those with boiling points above 75 ° C., such as, for example, the ethers from the same or different polyhydric alcohols or the partial ethers from polyhydric alcohols. These include, for example, di- or triethylene glycol polyglycerols and the partial ethers of ethylene glycol, propylene glycol, butylene glycol or glycerol with aliphatic alcohols containing 1 to 6 carbon atoms in the molecule.
• ketones such as acetone, methyl ethyl ketone and aliphatic, cycloaliphatic and aromatic hydrocarbons, and also the terpene alcohols.
• the cleaning agents according to the invention were prepared by mixing the constituents with stirring using a commercially available paddle stirrer in the following order: approx. 6% of the total amount of bicarbonate was dissolved in water at about 40 ° C, then the fatty acid was added in a molten form. After a homogeneous mixture was present, the mixture was cooled to 25 ° C. and the remaining constituents were then added.
• the cleaning agent to be tested was placed on an artificially soiled plastic surface.
• a mixture of carbon black, machine oil, triglyceride, saturated fatty acids and low-boiling aliphatic hydrocarbon was used as artificial soiling for the dilute use of the cleaning agent.
• the test area of 26 x 28 cm was evenly coated with 2 g of the artificial soiling with the aid of a surface coater.
• a plastic sponge was impregnated with 10 ml of the detergent solution to be tested and moved mechanically on the test surface, which was also coated with 10 ml of the detergent solution to be tested. After ten wiping movements with a plastic sponge, the cleaned test area was kept under running water and the loose dirt was removed.
• the cleaning effect ie the whiteness of the so cleaned Plastic surface was made with a Microcolor color difference measuring device from Dr. Measured for a long time.
• the clean white plastic surface served as the white standard. Since the measurement of the clean surface was set to 100% and the soiled area was displayed with 0, the read values for the cleaned plastic areas are to be equated with the percentage cleaning power (% RV).
• test product was placed in a large beaker. Then, from a height of 30 cm, the amount of tap water was allowed to flow in freely, which, with the amount of product presented, gives the recommended application solution of the product.
• the foam height in the beaker was read immediately after the addition of water and again after 3 minutes.
• the foam height after 3 minutes was set in relation to the initial foam and the foam decay was calculated as follows:
• An agent with a foam breakdown of more than 50% was defined as a low-foam cleaner.
• Examples 1 and 2 should show the relationship between particle size and abrasiveness.
• a commercially available liquid scouring agent with a content of 50% by weight of marble powder was chosen as the standard of comparison, and its abrasiveness was set to 100%.
• the example represented a low-foam cleaner.
• the foam breakdown when used diluted (3 ml / 1) was 73%.
• a commercial product with 50% sodium bicarbonate and with 12% total surfactant was tested, which had a foam breakdown of less than 43% at an application concentration of 3 ml / 1.
• Example 6 demonstrates the increase in the cleaning effect by adding gelatin.

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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)
• Inorganic Chemistry (AREA)
• Dispersion Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 1992
  • 1992-08-22 DE DE4227863A patent/DE4227863A1/de not_active Withdrawn
• 1993
  • 1993-08-13 ES ES94908187T patent/ES2110734T3/es not_active Expired - Lifetime
  • 1993-08-13 JP JP6505878A patent/JPH08500377A/ja active Pending
  • 1993-08-13 DE DE59307714T patent/DE59307714D1/de not_active Expired - Fee Related
  • 1993-08-13 EP EP94908187A patent/EP0656049B1/fr not_active Expired - Lifetime
  • 1993-08-13 US US08/387,880 patent/US5562856A/en not_active Expired - Fee Related
  • 1993-08-13 WO PCT/EP1993/002159 patent/WO1994004648A2/fr active IP Right Grant
  • 1993-08-13 CA CA002143002A patent/CA2143002A1/fr not_active Abandoned
  • 1993-08-13 AT AT94908187T patent/ATE160375T1/de not_active IP Right Cessation
  • 1993-08-13 DK DK94908187T patent/DK0656049T3/da active
• 1998
  • 1998-01-12 GR GR980400043T patent/GR3025870T3/el unknown

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