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
  • 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
  • C11D1/28—Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
• • 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
  • C11D3/0031—Carpet, upholstery, fur or leather cleansers

Definitions

• the invention relates to a low-foam carpet cleaning agent and a method for cleaning large-area textile surfaces using such an agent.
• Powdery products are often used to clean carpets and permanently installed carpets on site, which are sprinkled on the carpets and vacuumed again after mechanical treatment. A more intensive cleaning is carried out with aqueous cleaning liquors, which are applied to the carpets and after a certain exposure time, if necessary using mechanics, are removed from the carpets together with the dirt.
• a cleaning solution is first sprayed onto the carpets and worked into the carpets with the aid of brushes or similar mechanisms before the carpets are suctioned off again from the cleaning solution or the foam that has been created by the mechanics , are exempted
• a liquid extraction process in which the cleaning agent solution is sprayed onto the carpet via a pressure nozzle, in order to then be immediately sucked off the carpet by a suction nozzle located a few centimeters behind the pressure
• Such devices which have recently been offered for carpet cleaning in the household, essentially consist of a storage container which contains a generally aqueous surfactant solution through a hose is sprayed onto the textile surface to be cleaned via a nozzle and penetrates more or less deeply into the material to be cleaned.
• the cleaning effect can be increased by a brush attached to the end of the hose near the nozzle.
• There is a suction device in the working direction behind the nozzle which conveys the used cleaning agent solution into a dirty water tank. So that the sucked-in dirty water does not overflow, there is a float contact in the dirty water tank, which switches off the pumps for spraying the cleaning agent solution and sucking in the dirty water when the tank is full, so that the dirty water tank can be emptied.
• WO-A-9 009 181 describes the use of alkali metal, ammonium and / or amine salts of monocarboxylic acid polyoxyalkyl ester sulfonic acids as low-foaming wetting agents in aqueous alkaline treatment agents for textile fabrics or yarns.
• the task was therefore to develop a low-foaming cleaning agent for carpet cleaning that is suitable for use in spray extraction cleaning devices.
• This object is achieved by using sulfonated oleic acid in the form of an alkali or ammonium salt, in particular in the form of the disodium salt, as a surfactant component in the carpet cleaning agents.
• the invention therefore also relates to carpet cleaning agents which contain the salts mentioned together with other active cleaning agents.
• the carpet cleaning agents according to the invention are essentially aqueous concentrates which can be used as such or after dilution with water for textile cleaning. They are characterized by good cleaning performance with extremely low foaming even under high mechanical loads.
• Another object of the invention is a process for cleaning large-area textiles, especially carpets, with the aid of surfactant-containing aqueous solutions, in which the textile is impregnated with such a solution and optionally mechanically treated, the solution is then immediately largely removed from the textile by suction and if desired, the textile is dried, the process being characterized in that a cleaning solution is used which has been prepared by diluting a carpet cleaning agent which contains an alkali metal or ammonium salt of sulfonated oleic acid as the surfactant component.
• the term "immediately after" when using a spray extraction device results from the distance between the pressure and suction nozzles, which is normally about 1 cm to 15 cm, and the speed, usually 0.5 cm per second to 50 cm per second which the nozzle strips are moved over the textile to be cleaned, and usually means a period of less than 2 seconds, in particular less than 1 second.
• the oleic acid derivatives used according to the invention as the surfactant component are neutralized sulfonation products. These are known, for example, from British Patent GB 1,278,421 and German Laid-Open Specification 39 26 344. You can, as described there, by reacting oleic acid or technical mixtures containing it, such as are available from renewable raw materials, in particular beef tallow, sunflower oil, rapeseed oil or olive oil, with gaseous sulfur trioxide and subsequent hydrolysis and neutralization with aqueous bases, in particular Solutions of alkali or ammonium hydroxides are prepared.
• the mixtures obtained from alkenylsulfonic acid carboxylic acid salts and hydroxyalkylsulfonic acid carboxylic acid salts can, depending on the origin of the technical oleic acid starting material, more or less large proportions of salts of saturated fatty acids and sulfonation products contain other unsaturated fatty acids which generally do not impair the advantageous action of the sulfonated oleic acid in the cleaning agents according to the invention.
• Such sulfonated oleic acid salts are preferably present in the carpet cleaning agents according to the invention in amounts of from 10% by weight to 80% by weight, in particular from 15% by weight to 50% by weight.
• the agents according to the invention can contain other surfactants which are as low in foam as possible and which are primarily nonionic and, preferably, anionic surfactants, although in individual cases the use of other types of surfactants may be appropriate .
• Suitable anionic surfactants are in particular those of the sulfate or sulfonate type, but other types such as soaps, long-chain N-acyl sarcosinates, salts of fatty acid cyanamides or salts of ether carboxylic acids, as are obtainable from long-chain alkyl or alkylphenyl polyglycol ethers and chloroacetic acid, can also be used .
• the anionic surfactants are preferably used in the form of the sodium salts.
• Particularly suitable surfactants of the sulfate type are the sulfuric acid monoesters of long-chain primary alcohols of natural and synthetic origin with 10 to 20 C atoms, that is to say of fatty alcohols, such as, for example, coconut fatty alcohols, tallow fatty alcohols, oleyl alcohol, or the C 10 to C 20 oxo alcohols and the like of secondary alcohols of this chain length.
• fatty alcohols such as, for example, coconut fatty alcohols, tallow fatty alcohols, oleyl alcohol, or the C 10 to C 20 oxo alcohols and the like of secondary alcohols of this chain length.
• the sulfation products of the reaction products of C 4 to C 12 alcohols alkoxylated with 1 to 12 mol of ethylene oxide with 1,2-epoxyalkanes as can be obtained, for example, by the process described in German Offenlegungsschrift DE 37 23 354.
• the sulfuric acid monoesters of the aliphatic primary or secondary alcohols alkoxylated with 1 to 6 moles of ethylene oxide are suitable.
• Usable surfactants of the sulfonate type are the alkanesulfonates which can be obtained from C 12 - to C 18 -alkanes by sulfochlorination or sulfoxidation and subsequent hydrolysis or neutralization, and also the olefin sulfonates as obtained from long-chain monoolefins with a terminal or internal double bond by sulfonating with gaseous Sulfur trioxide and subsequent alkaline or acidic hydrolysis of the sulfonation products.
• Suitable nonionic surfactants for the process according to the invention are, in particular, addition products of 1 to 30, preferably 3 to 15, moles of ethylene oxide with 1 mole of a compound having 10 to 20 carbon atoms from the group of alcohols, alkylphenols, carboxylic acids and carboxamides.
• the addition products of ethylene oxide and / or propylene oxide onto long-chain primary or secondary alcohols, such as, for example, fatty alcohols or oxo alcohols, are particularly important.
• the well-known high-foaming oligoglycosides of the alcohols mentioned are also suitable.
• Such additional surfactants can be contained in the agents according to the invention preferably in amounts not exceeding 40% by weight, in particular from 5% by weight to 20% by weight.
• the carpet cleaning agents according to the invention contain water as the preferred solvent, preferably in amounts of 20 to 90% by weight, water-miscible organic solvents can be present in minor amounts. These include in particular alcohols with 1 to 4 carbon atoms, glycols with 2 to 4 carbon atoms and the di- and triglycols which can be derived therefrom and the corresponding glycol ethers.
• Such solvents are, for example, methanol, ethanol, propanol, isopropanol, tert-butanol, ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, ethylene glycol monobutyl ether and diethylene glycol monobutyl ether and diethylene glycol monobutyl ether.
• Such solvents are preferably contained in the agents according to the invention not more than 10% by weight, in particular from 1% by weight to 7% by weight.
• the agent according to the invention can contain other auxiliaries customary in carpet cleaning agents.
• auxiliaries customary in carpet cleaning agents.
• Preservatives, anti-pollution agents, inorganic salts, antistatic substances, colorants and perfumes are particularly worth mentioning.
• auxiliary substances which are intended to reduce the re-soiling of the carpet are primarily water-soluble or water-dispersible polymers which do not lead to films after drying, but to brittle residues.
• Such substances which prevent re-soiling are contained in the agents according to the invention in amounts between 2 and 30% by weight, in particular between 5% by weight and 20% by weight.
• Quaternary ammonium compounds which attach to the textile material are usually used as active ingredients which are intended to provide the carpet with an antistatic finish.
• Inorganic salts can also have an antistatic effect on the carpet.
• the content of such antistatic agents in the cleaning agents according to the invention is preferably not more than 1% by weight, in particular from 0.01% by weight to 0.5% by weight.
• the heavy metal complexing agents which can be used in the agents according to the invention are primarily aminopolycarboxylic acids and polyphosphonic acids or their salts, for example nitrilotriacetic acid and hydroxyethane diphosphonic acid.
• Such complexing agents are contained in the cleaning agents according to the invention preferably in amounts of not more than 10% by weight, in particular from 0.5% by weight to 2% by weight.
• Preservative, dye and perfume in the carpet cleaning agents according to the invention are preferably in amounts of not more than 3% by weight, in particular from 0.01% to 1% by weight and particularly preferably from 0.1% by weight to Contain 0.5 wt .-%.
• the production of the concentrates according to the invention has no difficulties. It can be done by simply mixing the components, which can be present as such or in the form of aqueous solutions.
• a ready-to-use cleaning solution can easily be prepared by diluting the cleaning agents according to the invention with water.
• a characteristic feature of the method according to the invention is the composition of the cleaning solution used, which is obtained by diluting the carpet cleaning agent concentrate according to the invention with water.
• the pH of the ready-to-use solution is preferably between 4 and 12, in particular between 6 and 8.
• the method according to the invention preferably uses a spray extraction device described above. After the detergent solution has been removed, the carpet is dried. This can be done by leaving it alone in the air, which can mean drying times of up to 2 days. However, it is also possible to accelerate drying by using air blowers or heat radiators.
• the new cleaning process has its particular advantages when cleaning carpets on site, since permanently installed carpets are not accessible to the cleaning processes for movable textiles.
• the method according to the invention has the same advantages in the case of other textiles which are not readily accessible to a conventional washing process, such as wall coverings and upholstered furniture. Because of its ease of use, it also offers advantages over the washing processes which are very complex in the case of textiles of this type when it is used on movable carpets.
• the method according to the invention is characterized not only by a good result in surface cleaning, but also by a low tendency towards re-soiling of the cleaned textile. Pretreatment of the textiles to be cleaned is normally not necessary.
• the process is suitable for carpets made of synthetic fibers, such as polyamide, as well as for relatively sensitive textiles made of natural fibers, such as wool.
• Example 1 Preparation of the disodium salt of sulfonated oleic acid
• the disodium salt of sulfonated oleic acid used for the preparation of the cleaning agents according to the invention was obtained by sulfonating a technical oleic acid from beef tallow (composition: 70.7% by weight oleic acid, 11.8% by weight linoleic acid, the rest other C 12 - to C 20 fatty acids; acid number 200.4, iodine number 98.3) with sulfur trioxide and subsequent neutralization and hydrolysis.
• the sulfonation was carried out in a tubular glass falling film reactor (length 110 cm, inner diameter 6 mm) surrounded by a heating or cooling jacket, which was provided at the head with a feed device for the oleic acid and a gas inlet tube.
• the oleic acid was applied at a constant rate of 550 g per hour.
• Gaseous sulfur trioxide (produced by heating oleum) was diluted with nitrogen to a concentration of 5 vol.% Sulfur trioxide and introduced into the reactor at such a rate that the molar ratio of olefinic double bonds present in technical oleic acid (calculated from the iodine number ) to sulfur trioxide was 1: 0.9.
• the reaction temperature was kept at 50 ° C. with the aid of a water circuit through the reactor jacket. After leaving the reactor, the reaction mixture was collected in a glass vessel which contained 25% by weight aqueous sodium hydroxide solution and heated to 90 ° C. at a pH of 8 to 9 for 2 hours.
• the desired disodium salt (T1) was obtained in a concentration of 60% by weight in water.
• the cleaning agents according to the invention characterized by their composition in Table 1 below were produced by simply mixing the constituents.
• Table 1 Composition of the agents according to the invention [% by weight] M1 M2 M3 M4 T1 60 25th 20th 24th 7-fold ethoxylated C 9/11 alcohol (Lutensol (R) ON 70, manufacturer BASF) - 20th - 6 C 12/14 alkyl glucoside, degree of polymerization 1.4 - - 20th - 6-fold ethoxylated C 12/14 fatty acid (Eumulgin (R) Ti 60, manufacturer Henkel) - - - 8th Li-C 8/12 alkyl sulfate (Texapon (R) LLS, manufacturer Henkel) - - 5 - Sulphated hydroxyether a) - 10th - 8th Na nitrilotriacetate - 0.2 - 0.8 Na tripolyphosphate - - 3rd - Poly (methyl methacrylate)
• a polyamide velor carpet with practical dirt from walking was used using a Floordress (R) spray extraction device SB 2412 with aqueous solutions, each containing 1% by weight of agents M1 to M4 according to the invention.
• R Floordress

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• 1990
  • 1990-12-10 DE DE4039348A patent/DE4039348A1/de not_active Withdrawn
• 1991
  • 1991-12-02 AT AT91920831T patent/ATE144549T1/de not_active IP Right Cessation
  • 1991-12-02 EP EP91920831A patent/EP0561842B1/de not_active Expired - Lifetime
  • 1991-12-02 US US08/074,849 patent/US5429684A/en not_active Expired - Fee Related
  • 1991-12-02 CA CA002098197A patent/CA2098197A1/en not_active Abandoned
  • 1991-12-02 WO PCT/EP1991/002274 patent/WO1992010558A1/de active IP Right Grant
  • 1991-12-02 DK DK91920831.4T patent/DK0561842T3/da active
  • 1991-12-02 ES ES91920831T patent/ES2094829T3/es not_active Expired - Lifetime
  • 1991-12-02 JP JP3518691A patent/JPH06503371A/ja active Pending
  • 1991-12-02 DE DE59108308T patent/DE59108308D1/de not_active Expired - Fee Related
• 1993
  • 1993-05-06 NO NO931661A patent/NO302374B1/no unknown
  • 1993-06-07 FI FI932601A patent/FI932601A0/fi not_active Application Discontinuation
• 1996
  • 1996-11-15 GR GR960403054T patent/GR3021680T3/el unknown

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