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
  • 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
• • 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
  • C11D1/825—Mixtures of compounds all of which are non-ionic
  • C11D1/8255—Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
• • 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
  • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups

Definitions

• the invention relates to rinse aid containing mixtures of gemini surfactants and Fatty alcohol alkoxylates, optionally in combination with ingredients customary in rinse aid, and the use of these mixtures to improve the wetting behavior in rinse aid.
• Rinse aid is therefore used to ensure that dishes are clear and spotless.
• liquid or solid rinse aid which can be added separately or is already available in ready-to-use form with the cleaning agent and / or regeneration salt ("2 in 1", "3 in 1", eg in the form of tabs and powders) that the water runs off the dishes as completely as possible, so that the different surfaces are residue-free and shiny at the end of the wash program.
• Commercial rinse aids are mixtures of, for example, nonionic surfactants, solubilizers, organic acids and solvents, water and, if appropriate, preservatives and fragrances.
• the rinse aid must also have a foam-suppressing effect, be temperature-stable with a strong temperature gradient of 85-35 ° C and also be sufficiently stable against alkali and active chlorine.
• the task was accomplished through the use of a selected combination of gemini surfactants and Fatty alcohol alkoxylates dissolved.
• Gemini surfactants are generally prepared by reacting 1,2-epoxyalkanes (CH 2 CHO-R), where R is a linear or branched, saturated or unsaturated alkyl and / or alkenyl radical, with polyols.
• Gemini surfactants of the formula (I) are particularly preferably present, where x is from 10 to 45, preferably from 12 to 35. Gemini surfactants of the formula (I) are very particularly preferably present, where R is a linear or branched alkyl radical having 8 to 12 carbon atoms. Gemini surfactants of the formula (I) are furthermore preferably present, where R represents a linear alkyl radical having 8 to 12 carbon atoms, in particular having 10 carbon atoms.
• rinse aids are also claimed which contain the gemini surfactants according to the invention and further ingredients customary in rinse aids.
• these customary ingredients can be alkyl and / or alkenyl oligoglycosides, further nonionic surfactants, anionic surfactants and further auxiliaries and additives.
• the gemini surfactants of the formula (I) and fatty alcohol alkoxylates are particularly preferred of the formula (II) in the ratio a: b from 1.5: 1 to 3: 1.
• the rinse aids according to the invention can contain further nonionic surfactants.
• Typical examples of nonionic surfactants are alkyl and / or alkenyl, terminally capped alkoxylates of alkanols with no free OH groups, alkoxylated fatty acid alkyl esters, amine oxides, alkylphenol polyglycol ethers, fatty acid polyglycol esters, fatty acid amide, fatty amine polyglycol ethers, alkoxylated triglycerides, mixed ethers and mixed formals, fatty acid-N-alkyl, Protein hydrolysates (especially vegetable products based on wheat), polyol fatty acid esters, sugar esters, sorbitan esters and polysorbates. If the nonionic surfactants contain polyglycol ether chains, they can have a conventional, but preferably a narrow, homolog distribution.
• the anionic surfactants are preferably selected from the group consisting of alkyl and / or alkenyl sulfates, alkyl ether sulfates, alkyl benzene sulfonates, monoglyceride (ether) sulfates and alkane sulfonates, in particular fatty alcohol sulfates, fatty alcohol ether sulfates, secondary alkane sulfonates and linear alkyl benzene sulfonates.
• the rinse aids according to the invention can be used as customary ingredient substances or auxiliaries and additives, for example solubilizers such as cumene sulfonate, ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, butyl glycol, diethylene glycol, propylene glycol monobutyl ether, polyethylene or polypropylene glycol ether with molecular weights from 600 to 1,500,000, preferably with a molecular weight from 400,000 to 800,000, or in particular butyl diglycol.
• Organic acids such as mono- and / or polyvalent carboxylic acids, preferably citric acid, and preservatives and fragrances can also be used.
• the rinse aid contains at least 50% by weight of water. based on the mean.
• Another object of the invention is the use of gemini surfactants of the formula (I) and Fatty alcohol alkoxylates of the formula (II) in the ratio according to the invention for improving the Wetting behavior in rinse aid, preferably on hard surfaces, especially in combined Products from machine dishwashing detergents and rinse aid.
• the combination according to the invention of gemini surfactants and selected fatty alcohol alkoxylates in the ratio according to the invention is not only characterized by its foam-suppressing action and high compatibility, but especially by plastic, but also by its higher melting points. This makes them particularly suitable for the simplified production of solid formulations.
• the mixtures of gemini surfactants and fatty alcohol alkoxylates according to the invention are solid in a ratio of 1: 1 to 4: 1.
• mixtures in a ratio of 1: 4 are liquid at room temperature.
• the solid surfactant mixtures are easy to handle and work particularly well into solid combination preparations made up of detergent and rinse aid for automatic dishwashing.
• the mixtures according to the invention due to their higher melting points, later dissolve in the cleaning liquor and develop with a time delay and in higher concentration.
• the rinse aids can be used both as aqueous solutions and in solid form e.g. in wax poured in or present as a gel.
• plastic test specimens measuring 20 x 5 cm are first cleaned with 1% NaOH and then with isopropanol.
• the test specimens pretreated in this way are then immersed in the solution to be tested and immediately removed again.
• the evaluation is carried out visually by drawing up a ranking list or on a scale from 1-5. 5 means that spontaneous tearing of the liquid film occurs and the wetting is completely eliminated. Grade 5 is obtained when water is used.
• the grade 1 means complete wetting of the plastic surface with an even flow of the liquid film (test substance: Maranil A55® COGNIS).
• PP polypropylene
• PE polyethylene
• PC polycarbonate

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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)

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• 2001
  • 2001-12-18 DE DE10162023A patent/DE10162023A1/de not_active Withdrawn
• 2002
  • 2002-12-10 EP EP02027460A patent/EP1321511A3/fr not_active Withdrawn
  • 2002-12-12 US US10/317,445 patent/US6805141B2/en not_active Expired - Fee Related

Patent Citations (4)

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