EP0729499A1 - Procede pour le nettoyage de robinetteries de salles de bains (ii) - Google Patents

Procede pour le nettoyage de robinetteries de salles de bains (ii)

Info

Publication number
EP0729499A1
EP0729499A1 EP94931043A EP94931043A EP0729499A1 EP 0729499 A1 EP0729499 A1 EP 0729499A1 EP 94931043 A EP94931043 A EP 94931043A EP 94931043 A EP94931043 A EP 94931043A EP 0729499 A1 EP0729499 A1 EP 0729499A1
Authority
EP
European Patent Office
Prior art keywords
acid
alkyl
cleaning solution
cleaning
aqueous cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94931043A
Other languages
German (de)
English (en)
Inventor
Ronald Menke
Petra Plantikow
Alexander Ditze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0729499A1 publication Critical patent/EP0729499A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C11D1/662—Carbohydrates or derivatives
    • 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
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts thereof
    • 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

Definitions

  • the present invention relates to a method for cleaning solid surfaces, in particular fittings in bathrooms and similar rooms.
  • cleaning agents are often applied in the form of foam, since this form of application has the advantage that the cleaning agents adhere well to vertical and inclined surfaces and not from them in the shortest possible time Areas expire.
  • foam in which alkyl polyglycosides are used as essential surfactants in the cleaner, is described in the earlier German patent application P 42 16 380.3.
  • the foam contains a relatively low concentration of surfactant, which is sufficient for this process.
  • a disadvantage of the use of cleaning agents in the form of foam is the fact that, owing to the low surfactant concentration and the devices required for producing the foam, such as spray pumps and aerosol packaging, the cleaning agents are diluted to large aqueous solutions Encountering difficulties.
  • Another problem in modern bathrooms is the cleaning of numerous plastic objects, such as bathtubs, shower cubicles or fittings.
  • the various plastics to be found here such as polymethacrylate, polypropylene, polyacetal and impact-resistant polystyrene (ABS) are subject to very different degrees of stress corrosion cracking, which is considerably increased by surfactant cleaning agents and can lead to the complete functionality of such objects.
  • Another disadvantage of using the known concentrated liquid cleaners is the damage to sensitive enamel surfaces, which occurs when the cleaners are acidified to remove limescale deposits.
  • the object of the present invention was therefore to develop a method for cleaning surfaces and fittings, in particular in the bathroom, which does not have the aforementioned disadvantages.
  • the solution to the problem according to the invention consists in a method for cleaning bathroom fittings and other solid surfaces, in which the fittings or surfaces to be cleaned are treated with an undiluted aqueous cleaning solution which contains a lime-dissolving acid or its alkali salt and whose surfactant content is at least 50% Wt .-% consists of alkyl polyglycoside.
  • the aqueous cleaning solution preferably contains no other nonionic surfactants other than alkyl polyglycosides.
  • the new cleaning process is characterized by a very good cleaning effect and allows limescale residues to be removed even on sensitive surfaces without damage. Even if no thorough rinsing or polishing is carried out, even and transparent residues are created which are practically invisible even on high-gloss surfaces. Even at high surfactant concentrations in the cleaning solution, practically no acceleration of the stress corrosion cracking is observed on the plastic materials customary in the bathroom area.
  • the alkyl polyglycosides used as surfactants in the aqueous cleaning solution are compounds of the general formula I:
  • R is a long-chain alkyl radical with 8 to 22 C atoms
  • G is a glycosidically bonded radical of a monosaccharide and n is a value between 1 and 10.
  • Alkyl polyglycosides have been known as surface-active substances for more than 50 years and can be produced in various ways. In this context, reference should only be made to European patent application 362 671, which also cites literature on older processes.
  • a synthesis which is important today on an industrial scale consists essentially in the acid-catalyzed condensation of monosaccharides of the aldose type (HO-G) with long-chain alcohols (R-OH) which contain 8 to 22, preferably 8 to 18, C atoms .
  • R-OH long-chain alcohols
  • alkyl glycosides of the formula I are formed, the value of n being able to be varied within wide limits by the choice of the reaction conditions.
  • alkyl glycosides In the preparation of the alkyl glycosides, it is also possible to start from oligosaccharides or polysaccharides which, in the course of the acid-catalyzed reaction, are first depolymerized by hydrolysis and / or alcoholysis to give low fragments before the alkyl glycosides of the formula I form. Mixtures of different reducing monosaccharides or polysaccharides which contain different monosaccharide units can also be used as starting materials, and if n is greater than 1, appropriately mixed alkyl polyglycoside molecules can be formed.
  • the following monosaccharides are preferably suitable as starting materials: glucose, mannose, galactose, arabinose, apiose, lyxose, gallose, old rose, idose, ribose, xylose and talose as well as the oligosaccharides and polysaccharides composed of these monosaccharides, for example maltose, lactose , Maltotriose, hemicellulose, starch, partial hydrolyzates of starch and sugar syrup.
  • alkyl glycosides are preferred which are composed of the same monosaccharide units. Alkyl glycosides in which the rest (-G) is derived from glucose are particularly preferred.
  • glucose, maltose, starch and other oligomers of glucose are used accordingly as starting materials.
  • the alkyl part R is derived from long-chain, optionally unsaturated, preferably primary alcohols, which may be branched but preferably are not branched.
  • Examples are the synthetic oxo alcohols with 9 to 15 C atoms and the fatty alcohols obtained from natural fatty acids with 8 - 22 C atoms.
  • the fatty alcohols with 8 to 18 carbon atoms and the oxo alcohols with 11 to 15 carbon atoms are preferred, but in particular the fatty alcohols with 8 to 10 carbon atoms or with 12 to 14 carbon atoms.
  • alkyl glycosides of formula I In addition to the actual alkyl glycosides of formula I, industrially manufactured products generally also contain certain proportions of free alcohol R-OH and non-acetalized saccharides, optionally in oligo-derived form. In most cases, these technical impurities do not interfere with the intended use. If the production of the alkyl glycosides is based on alcohol mixtures, for example alcohols based on natural fats, the alkyl glycosides are of course also mixtures with a correspondingly greater meaning of R in formula I.
  • the cleaning solutions used in the process according to the invention can contain further surfactants, provided that the advantageous effects of the process are not impaired thereby.
  • the alkyl polyglycosides make up at least 50% by weight of the total surfactants present. Their share is preferably at least 60% by weight. This means that the weight ratio of alkyl polyglycoside to the sum of all other surfactants contained is preferably at least 1: 1, in particular it is at least 2: 1.
  • the surfactants which may be present in the cleaning solutions in addition to the alkyl polyglycosides, are in particular anionic Surfactants, of which long-chain alkyl sulfates with 12 to 18 carbon atoms in the alkyl part, and olefin sulfonates and alkane sulfonates with 15 to 18 carbon atoms in the alkyl part are to be mentioned. They are preferably used as sodium salts. Fatty alcohol sulfates with an average of about 12 carbon atoms in the alkyl chain are particularly preferred. Ethoxylates of long-chain alcohols and their sulfuric acid half-esters, which have a particularly strong effect on stress cracking, are preferably not used in the cleaning solutions used according to the invention.
  • the total content of surfactants in these solutions is preferably between 5 and 50% by weight, in particular between 6 and 20% by weight, in each case based on the weight of the undiluted cleaning solution.
  • the cleaning solutions used in the process according to the invention contain lime-dissolving organic or inorganic acids, optionally in the form of their water-soluble salts, in particular the sodium salts.
  • preferred acids are acetic acid, lactic acid, succinic acid, glutaric acid, adipic acid, citric acid and phosphoric acid.
  • Organic acids and their salts are preferred.
  • the total content of lime-dissolving acids and their salts in the cleaning solutions is preferably 5 to 20% by weight, in particular 6 to 10% by weight, the weight of the corresponding acid being used as the basis for determining the content of the salts.
  • the pH of the cleaning solutions used according to the invention is preferably in the weakly acidic range, the ranges between 3.5 and 5.5 and in particular between 4 and 5 being particularly preferred.
  • the organic cleaning solutions used in the process according to the invention can in particular contain monohydric alcohols having 2 to 3 carbon atoms, that is to say ethanol, n-propanol and isopropanol, of which ethanol is again particularly preferred.
  • the content of alcohol fetching is in the solutions, preferably not more than 3% by weight and preferably between about 0.3 and 2% by weight.
  • the addition of the alcohols increases the low-temperature stability of the cleaning solutions and improves the cleaning result on certain soils in the process according to the invention, without promoting stress corrosion cracking on plastic surfaces. This applies in particular if the weight ratio of alkyl polyglycoside to alcohol is chosen to be greater than 6: 1 and in particular greater than 10: 1.
  • fatty alcohol sulfate is present as an anionic surfactant in the solutions, this can easily be achieved by adding water-soluble salts, in particular sodium chloride, in amounts of preferably 1 to 5% by weight.
  • water-soluble salts in particular sodium chloride
  • sufficiently high viscosities can be obtained with polysaccharides or polysaccheride derivatives in amounts between about 0.1 and 1% by weight, preferably 0.2 to 0.5% by weight, in each case based on the undiluted cleaning solutions can be set.
  • Cleaning solutions with viscosities of 50 to 600 Pas, in particular 100 to 200 mPas are preferably used in the process according to the invention.
  • the solutions used in the process according to the invention can contain small amounts of further active ingredients and additives, as are customary in sanitary cleaners of this type. Even when such auxiliaries and additives are used, it is of course a prerequisite that these substances do not adversely affect the positive results obtained with the process according to the invention.
  • auxiliaries and additives are dyes, corrosion inhibitors and antimicrobial agents Active ingredients or preservatives and perfume.
  • the cleaning solution is applied undiluted with a cloth or a sponge in an amount of preferably about 10 to 30 g / m 2 and after a corresponding exposure time by wiping or preferably removed from the object by rinsing with water.
  • the residues remaining after the solutions have dried on are generally transparent and practically invisible, so that polishing can also be dispensed with.
  • the same cleaning solutions can first be diluted heavily with water in a ratio of about 1: 100 to 1: 1000 and then used in this form. When using this highly diluted solution, even acid-sensitive surfaces can be cleaned without problems.
  • Citric acid .1H20 6.6 13.0 13.0 10.0 6.6 6.6 13.0 6.6 6.6 6.6 6.6

Landscapes

  • 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)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un procédé pour le nettoyage de robinetteries de salles de bains et d'autres surfaces fixes, procédé selon lequel les objets à nettoyer sont traités avec une solution de nettoyage aqueuse et non diluée qui comprend un acide pouvant dissoudre le tartre ou un sel alcalin de cet acide et dont le tensioactif est à un alkylpolyglucoside présent dans une proportion d'au moins 50 % en poids. Le procédé se caractérise par un pouvoir nettoyant élevé, une absence de résidues, et par le fait qu'il n'entraîne pas d'altération des matériaux nettoyés.
EP94931043A 1993-11-15 1994-11-07 Procede pour le nettoyage de robinetteries de salles de bains (ii) Withdrawn EP0729499A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4338973 1993-11-15
DE19934338973 DE4338973B4 (de) 1993-11-15 1993-11-15 Verfahren zur Reinigung von Badezimmerarmaturen (II)"
PCT/EP1994/003641 WO1995014070A1 (fr) 1993-11-15 1994-11-07 Procede pour le nettoyage de robinetteries de salles de bains (ii)

Publications (1)

Publication Number Publication Date
EP0729499A1 true EP0729499A1 (fr) 1996-09-04

Family

ID=6502637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94931043A Withdrawn EP0729499A1 (fr) 1993-11-15 1994-11-07 Procede pour le nettoyage de robinetteries de salles de bains (ii)

Country Status (3)

Country Link
EP (1) EP0729499A1 (fr)
DE (1) DE4338973B4 (fr)
WO (1) WO1995014070A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020107166A1 (en) * 2000-08-23 2002-08-08 Morris Timothy C. Liquid detergent compositions
US7414016B1 (en) * 2007-11-01 2008-08-19 The Clorox Company Acidic cleaning compositions
MA45026A (fr) 2016-05-19 2019-03-27 Ecolab Usa Inc Compositions de nettoyage destinées à une utilisation avec une pierre à base de calcite
SG11202002632VA (en) 2017-09-26 2020-04-29 Ecolab Usa Inc Acidic/anionic antimicrobial and virucidal compositions and uses thereof
US12329157B2 (en) 2019-12-16 2025-06-17 Ecolab Usa Inc. Anionic surfactant impact on virucidal efficacy

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683074A (en) * 1985-04-26 1987-07-28 A. E. Staley Manufacturing Company Stability and compatibility of glycosides in acid systems
DE4216380A1 (de) * 1992-05-18 1993-11-25 Henkel Kgaa Verfahren zur Reinigung von Badezimmerarmaturen
DE4233698A1 (de) * 1992-10-07 1994-04-14 Henkel Kgaa Flüssiges Reinigungs- und Pflegemittel für Haushaltsgeschirrspülmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9514070A1 *

Also Published As

Publication number Publication date
WO1995014070A1 (fr) 1995-05-26
DE4338973A1 (de) 1995-05-18
DE4338973B4 (de) 2008-09-18

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