EP0966512A2 - Nettoyage de surfaces a charge statique avec des nettoyants aqueux antistatiques - Google Patents

Nettoyage de surfaces a charge statique avec des nettoyants aqueux antistatiques

Info

Publication number
EP0966512A2
EP0966512A2 EP98906956A EP98906956A EP0966512A2 EP 0966512 A2 EP0966512 A2 EP 0966512A2 EP 98906956 A EP98906956 A EP 98906956A EP 98906956 A EP98906956 A EP 98906956A EP 0966512 A2 EP0966512 A2 EP 0966512A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
antistatic
weight
water
contain
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Withdrawn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
EP98906956A
Other languages
German (de)
English (en)
Inventor
Thomas Tyborski
Werner Lüdecke
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.)
Ecolab GmbH and Co OHG
Original Assignee
Henkel Ecolab GmbH and Co KG
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 Ecolab GmbH and Co KG filed Critical Henkel Ecolab GmbH and Co KG
Publication of EP0966512A2 publication Critical patent/EP0966512A2/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Withdrawn legal-status Critical Current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
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/42—Amino alcohols or amino ethers
    • C11D1/44—Ethers of polyoxyalkylenes with amino alcohols; Condensation products of epoxyalkanes with amines
    • 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
    • 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
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • statically chargeable surfaces in the industrial sector such as the cleaning of secondary food packaging such as yogurt trays, beverage crates or transport boxes for bread, meat etc., of painted surfaces such as e.g. Motor vehicles and generally plastic surfaces such as window frames, linings of ventilation shafts or wall claddings as well as foils, textiles etc. are associated with difficulties because the surfaces attract the dirt shortly after manufacture or cleaning and quickly become soiled again.
  • the inorganic constituents of the dust (soot, carbonates, silicates), which make up more than 60% by weight of the dust weight, adhere strongly to the surfaces and cannot be completely removed with conventional cleaners even after intensive treatment.
  • External antistatic agents increase the surface conductivity and thus enable an improved drainage of charges.
  • External antistatic agents are generally substances with at least one hydrophilic molecular ligand and give a more or less hygroscopic film on the surfaces. These mostly surface-active antistatic agents can be broken down into nitrogen-containing (amines , Amides, quaternary ammonium compounds), phosphorus-containing (phosphoric acid esters) and sulfur-containing (alkyl sulfonates, alkyl sulfates) antistatic agents, and non-surface-active compounds can also be used as antistatic agents - the best known is the use of carbon black, silicon dioxide, aluminosilicates and metal oxides as an internal as well as an external antistatic.
  • External antistatic agents are usually applied to the surfaces to be treated using solutions in water, alcohols, petrol, chlorinated hydrocarbons, etc. by brushing, dipping or spraying. Economic, ecological, ar- Occupational medicine and occupational safety considerations play a role in the selection of solvents and antistatic agents.
  • Common external antistatic agents which are used for surface treatment often have the disadvantage of forming precipitates with anionic cleaning agents on account of their content of cationic compounds, so that they have to be used in a subsequent step. For use in dishwashers and spraying machines, these agents must be low-foaming, wet the surfaces well and dry quickly.
  • Common external antistatic agents have only minor effects with regard to polarizability and electrical conductivity of the treated surface effect. In addition, the long-term effects of standard antistatic agents are usually poor. There is no additional cleaning effect, or only a very limited one, with pure antistatic agents.
  • the present invention has for its object to develop a new, environmentally friendly, inexpensive and effective method for cleaning statically chargeable surfaces, which is free from the disadvantages mentioned.
  • a new cleaning-active antistatic cleaning concentrate is to be made available which, when diluted with water, provides a cleaning solution that combines thorough cleaning of statically chargeable surfaces with an antistatic effect.
  • Cleaning agent or cleaning solution is understood here to mean the solution diluted to the application concentration with water, while cleaning agent concentrate means the undiluted, liquid solution of the three constituents a) to c) mentioned below and, if appropriate, further additives.
  • statically chargeable surface denotes horizontal and non-horizontal surfaces which tend to charge due to the insulating material properties.
  • this includes plastics, in particular thermoplastics and thermosets, in which this problem is particularly pronounced.
  • the invention relates to antistatic detergent concentrates which, when added to water, provide an antistatic cleaning solution, characterized in that they contain:
  • the detergent concentrates contain as component a) 1 to 12% by weight of one or more ethoxylated secondary amines.
  • the invention relates to a method for cleaning statically chargeable surfaces, in which an antistatic aqueous cleaning agent is applied to the statically chargeable surfaces to be cleaned and is then allowed to run off.
  • the antistatic aqueous cleaning agent to be used in this process is obtained by diluting the cleaning agent concentrate according to the invention with water.
  • the advantages of the method according to the invention are that the agents used in the method combine a cleaning and antistatic effect. On the one hand, good cleaning performance and on the other hand long-lasting antistatic effects are achieved.
  • the cleaning agents wet the surfaces very well, are low-foaming and therefore sprayable and show excellent dripping behavior compared to conventional cleaning agents / antistatic agents.
  • a long-lasting protective film is created on the treated surfaces, which provides a long-lasting antistatic effect and delays re-soiling and facilitates subsequent cleaning.
  • the agents are easy to dose and, thanks to their excellent dripping behavior, run off quickly from the treated surfaces. In this way, there is a rapid, uniform drying without the formation of so-called "water stains" due to hardening agents.
  • Another advantage of the agents according to the invention is that they can be combined with alkaline cleaners in application solutions and do not show any precipitations when mixed with them.
  • the process according to the invention can be used in a wide temperature range both in the cleaning step and as a rinsing process.
  • the cleaning agent concentrates according to the invention are neutral, but do not have to be protected against contamination with preservatives. Compared to conventional neutral products, the compositions according to the invention have no tendency to infest germs.
  • Component a) acts as an antistatic and is selected from the group of alkoxylated primary or secondary amines. These are notable for their usability both as internal antistatic agents and as external antistatic agents in cleaning agents of the present invention and are used according to the invention in amounts of between 1 and 12% by weight, based on the weight of the cleaning agent concentrate.
  • Alkoxylated secondary amines are preferably used used, ethylene and propylene oxide being particularly suitable as alkoxylating agents. It is particularly preferred to use 1 to 12% by weight of one or more ethoxylated secondary amines in the agents according to the invention.
  • the C chain length of the alkoxylated amines is in the range from 10 to 18 C atoms, alkyl chains with 12 to 16 C atoms being preferred.
  • Preferred degrees of alkoxylation, in particular degrees of ethoxylation, are between 1 and 10, preferably between 2 and 5.
  • Component b) is used as a defoamer in amounts of 1 to 10% by weight, based on the weight of the detergent concentrate. While in principle any fatty acid salt can be used, it can also be advantageous to synthesize the corresponding salt only when the cleaning agent concentrates are produced by neutralizing a fatty acid with an alkaline compound.
  • alkaline components All substances which form water-soluble salts with fatty acids are suitable as alkaline components, the use of substances from the group of the alkali metal hydroxides and alkanolamines being preferred from a technical point of view.
  • alkanolamines in particular triethanolamine, is preferred.
  • Suitable fatty acids which are neutralized during or before the preparation of the agents according to the invention are all fatty acids or mixtures thereof which occur in native fats.
  • Fatty acids with C g are from the naturally occurring chain length cut of 6 to 20 C atoms in the alkyl chain. 12 -alkyl radicals can preferably be used in the context of the present invention.
  • the cleaning agent concentrates according to the invention contain a triethanolamine salt of a C 8 . 10 fatty acid in amounts between 1 and 10 wt .-%, based on the weight of the detergent concentrate.
  • Suitable surfactants are nonionic surfactants, which are synthesized by the ethoxylation of the derivatives obtained from vegetable or animal oils. Particularly preferred nonionic surfactants because of their foaming behavior are those in which the degree of ethoxylation is less than half the number of carbon atoms in the alkyl chain. In order to further influence the foaming behavior of the cleaning agent concentrates according to the invention, mixtures of different nonionic surfactants can be used.
  • nonionic surfactants that foam more can also be used, if at the same time nonionic surfactants are added, which have a positive influence on the foaming behavior in the sense of the invention.
  • these nonionic surfactants which also act as defoamers, the so-called “Guerbet surfactants” are particularly preferred, which are obtained by ethoxylation of alcohols, which in turn are obtained by Guerbet reaction (self-condensation of alcohols under the influence of sodium or copper at 200 ° C. and elevated Pressure).
  • the defoaming effect of the "Guerbet surfactants” also makes it possible to incorporate more foaming surfactants into the cleaning agent concentrates according to the invention.
  • the alkyl polyglycosides occupy an outstanding position
  • the alkyl or alkenyl glycosides (APG) have the general formula RO- (G) x , in which R denotes a primary, straight-chain or aliphatic radical with 8 to 22, preferably 12 to 18 C atoms, methyl-branched in the 2-position, G is a symbol which stands for a glucose unit with 5 or 6 carbon atoms, and the degree of oligomerization x is between 1 and 10, preferably between 1 and 2 and in particular is significantly smaller than 1.4.
  • Component c) is used in amounts between 2 and 12% by weight, based on the weight of the detergent concentrate.
  • the cleaning agent according to the invention may contain further components, for example additional alkalis, chelate complexing agents, builder substances, additional anionic and / or nonionic surfactants, solubilizers, enzymes, preservatives, dyes and / or perfumes.
  • additional alkalis for example additional alkalis, chelate complexing agents, builder substances, additional anionic and / or nonionic surfactants, solubilizers, enzymes, preservatives, dyes and / or perfumes.
  • Additional alkalis include, for example, sodium or potassium carbonate and sodium or potassium silicates.
  • Suitable chelating agents are for example, the alkali salts of ethylenediaminetetraacetic acid (EDTA) or nitrilotriacetic acid (NTA) and alkali metal salts of anionic polyelectrolytes such as polyacrylates, polymaleates and polysulfonates.
  • EDTA ethylenediaminetetraacetic acid
  • NTA nitrilotriacetic acid
  • anionic polyelectrolytes such as polyacrylates, polymaleates and polysulfonates.
  • Low molecular weight hydroxycarboxylic acids such as citric acid, tartaric acid, malic acid or gluconic acid are also suitable.
  • Suitable complexing agents can also be selected from organophosphonates such as, for example, l-hydroxyethane-l, l-diphosphonic acid (HEDP), aminotri (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBS-AM ).
  • organophosphonates such as, for example, l-hydroxyethane-l, l-diphosphonic acid (HEDP), aminotri (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBS-AM ).
  • the complexing agents mentioned above, in particular the polycarboxylates, can also be used because of their builder properties.
  • builders are important components in detergents and cleaning agents, compare, for example, Ullmann's Encyclopedia of Industrial Chemistry, 5th edition, volume A8 (1987), pages 350 to 357. They have at least one of the tasks: alkalizing the cleaning agent, binding Water hardness and dirt dispersion.
  • Known builders which can be used in the context of the present invention are monomeric or oligomeric phosphates such as, for example, monophosphates, pyrophosphates, triphosphates and cyclic or polymeric metaphosphates.
  • Organic builder substances can preferably be selected from the polymers and copolymers of acrylic acid, ⁇ -hydroxyacrylic acid, maleic acid and allyl alcohol. Poly (teramethylene-1,2-dicarboxylates) and poly (4-methoxytetramethylene-1,2-dicarboxylates) can also be used.
  • the inorganic and organic builders mentioned are used in the form of their water-soluble salts, in particular their sodium and / or potassium salts.
  • alkyl sulfates and sulfonates and alkylbenzenesulfonates of oleochemical or petrochemical origin examples of further anionic or nonionic surfactants which can additionally be used in the formulation according to the invention are: alkyl sulfates and sulfonates and alkylbenzenesulfonates of oleochemical or petrochemical origin, and alkoxylation products of fatty alcohols or fatty amines.
  • the alkoxylates can be end-capped with alkyl groups, for example with butyl groups, and can be present as fatty alcohol or fatty amine polyglycol ethers. This can influence the foaming behavior of the cleaners according to the invention.
  • Solubilizers which can be used in the cleaning agent concentrates according to the invention are generally monohydric or polyhydric alcohols, alkanolamines or glycol ethers, provided they are miscible with water in the concentration range used.
  • the solubilizer or solubilizers are preferably selected from ethanol, n- or i-propanol, butanols, glycol, propane or butanediol, glycerol, diglycol, propyl or butyl diglycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, etheylene glycol mono-n-butyl ether, diethylene glycol - methyl ether, diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, dipropylene glycol methyl or ethyl ether, methoxy, ethoxy or butoxytriglycol, 1-
  • the method according to the invention is outstandingly suitable for cleaning statically chargeable hard surfaces, for example painted or enameled metal surfaces, or surfaces made of plastics or ceramics such as tiles.
  • the cleaning method is particularly suitable for cleaning plastics, the cleaning of thermoplastics being a preferred area of application.
  • thermoplastics to be cleaned are used and contaminated industrially in a multitude of applications, for example in the food and beverage industry, in canteen kitchens, warehouses, slaughterhouses or similar facilities. For example, beverage crates, yogurt trays, bread and meat containers and fish barrels are mentioned here.
  • the cleaning agent concentrate according to the invention is diluted with water by a factor between about 1000 and about 50, preferably between 200 and 100, that is to say the agent is used in an application concentration in the range from about 0.1 to about 2% by weight, preferably between 0.5 and 1 wt .-%, used.
  • This dilution with water results in an antistatic cleaning agent with an outstanding antistatic effect and a high cleaning effect.
  • Mixing with water is preferably carried out using a mixing nozzle with which the cleaning agent is added to the water in the desired ratio.
  • the detergent mixed with water in the device is sprayed onto the surfaces to be cleaned or provided as a cleaning bath in which the parts to be cleaned are immersed.
  • the concentrate can be mixed with water in a mixing container, after which the solution can, for example, be applied manually to the surfaces to be cleaned, which can be done, for example, using a sponge, a cloth, a brush, a spray bottle or a roller.
  • the cleaning agent mixed with water can be used, for example, as a cleaner for electronic devices, as a floor cleaner, as an all-purpose cleaner, as a bathroom cleaner, as an oven cleaner and for similar purposes.
  • the cleaning solution can be used both at room temperature and at elevated temperature in both the spraying and immersion processes.
  • the cleaning solution is advantageously used in a slightly warm to hot, preferably at temperatures between 40 and 80 ° C.
  • a cleaner concentrate El according to the invention with the following composition was produced:
  • Nitrilotriacetic acid 5.5% by weight
  • This concentrate was used as a 1% by weight solution in water (16 ° dH) for the following test procedures.
  • PVC test panels were soiled with three test soils (beef tallow, butter, cola) and cleaned for 15 minutes at different temperatures in 1% by weight cleaning solutions in city water (16 ° dH).
  • the agent E1 according to the invention was tested alone and in combination with an alkaline cleaner (A) against water (V3), an alkaline surfactant-free cleaner (V4), an alkaline surfactant-containing cleaner (V5) and an acidic cleaner (V6).

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)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un procédé de nettoyage de surfaces à charge statique, selon lequel un nettoyant aqueux antistatique est appliqué sur les surface à nettoyer, avant d'être évacué. L'invention concerne en outre des détergents concentrés antistatiques utilisables dans ledit procédé, qui fournissent une solution détergente antistatique, par adjonction d'eau. Ce concentré contient: a) entre 1 et 12 % en poids d'une ou de plusieurs amines primaires ou secondaires alcoxylées; b) entre 1 et 10 % en poids d'un sel d'acide gras; c) entre 2 et 12 % en poids d'un ou de plusieurs tensioactifs non ioniques à faible pouvoir moussant, et comme reste, de l'eau ou une solution aqueuse d'autres auxiliaires et principes actifs. L'utilisation desdits agents permet de nettoyer par ex. des articles en plastique dans le cadre de l'industrie alimentaire.
EP98906956A 1997-02-26 1998-02-17 Nettoyage de surfaces a charge statique avec des nettoyants aqueux antistatiques Withdrawn EP0966512A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19707650 1997-02-26
DE1997107650 DE19707650A1 (de) 1997-02-26 1997-02-26 Reinigung statisch aufladbarer Oberflächen mit antistatischen wäßrigen Reinigungsmitteln
PCT/EP1998/000892 WO1998038274A2 (fr) 1997-02-26 1998-02-17 Nettoyage de surfaces a charge statique avec des nettoyants aqueux antistatiques

Publications (1)

Publication Number Publication Date
EP0966512A2 true EP0966512A2 (fr) 1999-12-29

Family

ID=7821513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98906956A Withdrawn EP0966512A2 (fr) 1997-02-26 1998-02-17 Nettoyage de surfaces a charge statique avec des nettoyants aqueux antistatiques

Country Status (3)

Country Link
EP (1) EP0966512A2 (fr)
DE (1) DE19707650A1 (fr)
WO (1) WO1998038274A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913807B9 (de) * 1999-03-26 2004-09-09 Betz, Michael, Dr. Verfahren zum Reinigen von hydrophobe Bestandteile enthaltenden Materialien
DE10065933C1 (de) * 2000-12-21 2002-07-11 Ecolab Gmbh & Co Ohg Verfahren zur Entfernung elektrostatisch gebundener Rückstände von Kunststoffoberflächen
DE10141707B4 (de) * 2001-08-25 2008-07-24 Chemetall Gmbh Verfahren zur antistatischen Beschichtung von Kunststoff-Formteil-Oberflächen, von mit Kunststoff oder/und Lack beschichteten Formteilen und Verwendung der nach den Verfahren behandelten Kunststoff- oder/und Lackoberflächen
DE102010012197A1 (de) * 2010-03-19 2011-09-22 Merck Patent Gmbh Elektrisch leitfähige Fußbodenpflegemittel
CN112940874A (zh) * 2021-02-04 2021-06-11 上海神洁环保科技股份有限公司 一种电力变压器清洗剂

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230158A1 (de) * 1992-09-09 1994-03-10 Henkel Kgaa Reinigung und antistatische Behandlung von Kunststoff-Oberflächen aus Polyolefinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9838274A3 *

Also Published As

Publication number Publication date
WO1998038274A2 (fr) 1998-09-03
WO1998038274A3 (fr) 1998-12-17
DE19707650A1 (de) 1998-08-27

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