EP0111285B1 - Procédé de nettoyage - Google Patents

Procédé de nettoyage Download PDF

Info

Publication number
EP0111285B1
EP0111285B1 EP83112200A EP83112200A EP0111285B1 EP 0111285 B1 EP0111285 B1 EP 0111285B1 EP 83112200 A EP83112200 A EP 83112200A EP 83112200 A EP83112200 A EP 83112200A EP 0111285 B1 EP0111285 B1 EP 0111285B1
Authority
EP
European Patent Office
Prior art keywords
alkaline
silica
dispersions containing
acid
further constituent
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.)
Expired
Application number
EP83112200A
Other languages
German (de)
English (en)
Other versions
EP0111285A2 (fr
Inventor
Christian Rossmann
Horst Flüchter
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 EP0111285A2 publication Critical patent/EP0111285A2/fr
Application granted granted Critical
Publication of EP0111285B1 publication Critical patent/EP0111285B1/fr
Expired 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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/20—Water-insoluble oxides
    • 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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/06—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions

Definitions

  • the invention relates to a process for cleaning rigid surfaces with builder-containing alkaline solutions, which are obtained by combining a strongly alkaline and an acidic or neutral active ingredient concentrate and using dispersions of silica.
  • alkaline cleaning agents which contain caustic soda, orthophosphates, condensed phosphates, silicates, complexing agents, wetting agents and inhibitors for cleaning rigid material, such as workpieces made of metal or glass.
  • the bath concentration of the cleaning agent depending on the application and degree of soiling can be between 0.1 and 20% by weight.
  • the prerequisite for the effectiveness of the cleaning solution is compliance with the optimal concentration. This can be determined by titration or a conductivity measurement. The conductivity measurement for determining the concentration can be carried out in conjunction with an automatic concentration supplement.
  • US-A-3408300 describes solid, alkaline, water-soluble cleaning agents which are stable in storage and do not foam in aqueous solutions. These agents consist essentially of 40 to 95% by weight of alkali and a sufficient amount of a foam-suppressing compound, selected from the group of ethylene oxide and propylene oxide adducts or their mixtures, which have a cloud point of 10 to 60 ° C in a 1 % aqueous solution. Finely divided silica serves as a carrier for the foam-suppressing compound to ensure its storage stability.
  • such agents may contain primary alkali metal phosphates and alkali metal bisulfates as well as orthophosphates and polyphosphates, soda, potash, gluconates and wetting agents.
  • alkaline liquid detergents which have been obtained and supplemented by combining a strongly alkaline and an acidic or neutral active substance concentrate.
  • silicate-containing cleaners it was not possible to produce silicate-containing cleaners in this way.
  • Products with a high active substance content require a very high concentration of hydrotropic substances and / or potash salts with a low active substance content.
  • the new process for cleaning rigid surfaces with builder-containing alkaline solutions which are obtained by combining a strongly alkaline and an acidic or neutral active substance concentrate, the alkaline active substance concentrate being used in excess to achieve an alkaline milieu, is characterized in that as acidic or neutral active ingredient a dispersion of silica is used.
  • concentration of the silica in the dispersion is expediently in the range from 5 to 40% by weight, preferably from 10 to 30% by weight.
  • the silica dispersion can be prepared from pyrogenic and / or precipitated silica by customary methods.
  • silica dispersions of higher concentration it is expedient to add stabilizers, such as vegetable gum, polyvinylpyrrolidone or polyacrylic acid, even in small amounts, preferably below 5%.
  • stabilizers such as vegetable gum, polyvinylpyrrolidone or polyacrylic acid
  • preservatives can be added to neutral silica dispersions.
  • the silica dispersion In order to achieve a good cleaning effect, it is advisable for the silica dispersion to contain further constituents.
  • phosphoric acid and alkali polyphosphates neutralized to pH 6 to 9 are suitable for this.
  • the addition of these compounds can be up to 40%, based on the silica dispersion.
  • the phosphoric acid can be partially, that is up to 50%, replaced by sulfuric acid.
  • Additions of anionic, nonionic and / or amphoteric surfactants are also suitable for these purposes.
  • Compounds such as alkylbenzenesulfonates, alkylsulfonates, fatty alcohol sulfates, adducts of ethylene and / or propylene oxide with fatty alcohols, fatty amines and alkylphenols and surface-active ethylene oxide / propylene oxide block polymers are particularly suitable.
  • the chain lengths of the alkyl radicals are in the range from C 12 to C 20 in the case of the compounds mentioned and in the range from C 6 to e '8 in the case of the alkylphenols.
  • Compounds such as alkyldimethylammonium betaines (alkyl radical 12 to 18 carbon atoms) are also suitable as amphoteric surfactants.
  • the amounts of wetting agents are expediently in the range from 0.5 to 10%.
  • the silica dispersion can also form complexing agents, in particular in the form of the acids, such as nitrilotriacetic acid, ethylenediaminetetraacetic acid, gluconic acid and / or citric acid, preferably phosphonic acid or phosphonocarboxylic acid, such as hydroxyethane-1,1-diphos phonic acid, aminotrimethylene phosphonic acid and 2-phosphono-1,2,4-butane tricarboxylic acid.
  • acids such as nitrilotriacetic acid, ethylenediaminetetraacetic acid, gluconic acid and / or citric acid, preferably phosphonic acid or phosphonocarboxylic acid, such as hydroxyethane-1,1-diphos phonic acid, aminotrimethylene phosphonic acid and 2-phosphono-1,2,4-butane tricarboxylic acid.
  • the complexing agents mentioned can also be added to the alkaline component.
  • the latter consists essentially of sodium hydroxide solution or potassium hydroxide solution.
  • constituents which are incompatible with the substances of the silica dispersion such as, for example, lignin sulfonates, are also suitable.
  • the term “excess” is to be understood as meaning such a large amount of sodium hydroxide solution or potassium hydroxide solution that is sufficient to give the active substance concentrate a pH of above 11, preferably above 12, after the combination.
  • the above-mentioned procedure has the advantage that highly concentrated active ingredient components can be produced without an unnecessary concentration of hydrotropic substances and / or potassium salts being necessary.
  • the dispersions can be prepared by adding the silica, into which an acidic or neutral solution, if appropriate with a stabilizer and wetting agents, is added, with stirring.
  • a cleaning solution with different alkalinity can also be prepared, depending on the contamination of the material to be treated, depending on whether a higher or a smaller part of the alkaline component is used. Since the reaction of the cleaning solution is always alkaline, the concentration of the solution can be determined via the conductivity of the hydroxyl ions. The further active ingredient components are then added in an analogous ratio to the alkaline component. This ensures problem-free continuous dosing of the detergent concentrates. To make the concentrates more visible, they can also be colored with indicators. The process is also carried out at the usual temperatures for cleaning and degreasing systems in the range from 20 to 100 ° C., preferably from 50 to 80 ° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Claims (8)

1. Procédé de nettoyage de surfaces rigides avec des solutions alcalines renfermant des buil- ders qui sont obtenues par la réunion d'un concentré de matière active fortement alcalin et d'un concentré acide ou neutre, le concentré de matière active alcalin étant utilisé en excès pour obtenir un milieu alcalin, caractérisé en ce qu'on utilise comme concentré de matière active acide ou neutre une dispersion de silice.
2. Procédé selon la revendication 1, caractérisé en ce qu'on utilise des dispersions qui contiennent une addition supplémentaire d'acide phosphorique.
3. Procédé selon la revendication 2, caractérisé en ce qu'on utilise des dispersions dans lesquelles l'acide phosphorique est partiellement remplacé par de l'acide sulfurique.
4. Procédé selon les revendications 1 à 3, caractérisé en ce qu'on utilise des dispersions qui contiennent comme constituant supplémentaire des di-, tri- et/ou polyphosphates sous forme de leurs sels alcalins neutralisés à la valeur de pH de 6 à 9.
5. Procédé selon les revendications 1 à 4, caractérisé en ce qu'on utilise des dispersions qui contiennent comme constituant supplémentaire des tensioactifs anioniques, non ionogènes ou amphotères.
6. Procédé selon les revendications 1 à 5, caractérisé en ce qu'on utilise des dispersions qui contiennent comme constituant supplémentaire un formateur de complexe.
7. Procédé selon les revendications 1 à 6, caractérisé en ce qu'on utilise des dispersions qui contiennent comme constituant supplémentaire des stabilisateurs.
8. Procédé selon les revendications 1 à 7, caractérisé en ce qu'on utilise des dispersions qui contiennent comme constituant supplémentaire un agent de conservation
EP83112200A 1982-12-13 1983-12-05 Procédé de nettoyage Expired EP0111285B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3246080 1982-12-13
DE19823246080 DE3246080A1 (de) 1982-12-13 1982-12-13 Reinigungsverfahren

Publications (2)

Publication Number Publication Date
EP0111285A2 EP0111285A2 (fr) 1984-06-20
EP0111285B1 true EP0111285B1 (fr) 1986-09-17

Family

ID=6180526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112200A Expired EP0111285B1 (fr) 1982-12-13 1983-12-05 Procédé de nettoyage

Country Status (6)

Country Link
US (1) US4731194A (fr)
EP (1) EP0111285B1 (fr)
JP (1) JPS59117597A (fr)
AU (1) AU558637B2 (fr)
DE (2) DE3246080A1 (fr)
ZA (1) ZA839237B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504172A1 (de) 1985-02-07 1986-08-07 Henkel KGaA, 4000 Düsseldorf Wirkstoffkonzentrate fuer alkalische zweikomponentenreiniger, verfahren zu ihrer herstellung und ihre verwendung
JPS61257487A (ja) * 1985-05-08 1986-11-14 Nippon Paint Co Ltd 金属表面洗浄方法
AU609012B2 (en) * 1987-02-09 1991-04-18 Atofina Chemicals, Inc. High solids liquid alkaline cleaners
US4869844A (en) * 1987-02-09 1989-09-26 Pennwalt Corporation High solids liquid alkaline cleaners
DE3708330A1 (de) * 1987-03-14 1988-09-22 Henkel Kgaa Fluessige, alkalische reinigerkonzentrate
EP0350449A3 (fr) * 1988-07-08 1990-10-24 Ciba-Geigy Ag Composition détergente liquide contenant des azurants optiques
US5372741A (en) * 1991-11-27 1994-12-13 Ethone-Omi, Inc. Aqueous degreasing composition and process
DE4216405A1 (de) * 1992-05-18 1993-11-25 Henkel Kgaa Pumpfähige alkalische Reinigerkonzentrate
AU1943199A (en) 1998-01-30 1999-08-16 Rhodia Inc. Low foaming surfactant compositions useful in highly alkaline caustic cleaners
GB9930248D0 (en) * 1999-12-22 2000-02-09 Johnson Matthey Plc Surface cleaner
GB2358638A (en) * 1999-12-22 2001-08-01 Reckitt & Colmann Prod Ltd Cleaning compositions
AU2016401A (en) 1999-12-22 2001-07-03 Reckitt Benckiser (Uk) Limited Photocatalytic compositions and methods
DE10112650A1 (de) * 2001-03-16 2002-09-19 Degussa Inhomogene Kieselsäuren in Zahnpflegemittel
EP1739162A1 (fr) * 2005-06-30 2007-01-03 Sika Technology AG usage des compositions pour eliminer des composes de silicone

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1744463A (en) * 1926-06-22 1930-01-21 American Chem Paint Co Removing paint
US2992997A (en) * 1955-05-25 1961-07-18 Purex Corp Ltd Method for derusting and removing heat scale from ferrous bodies and compositions of matter useful therefor
US3281367A (en) * 1960-04-06 1966-10-25 Lever Brothers Ltd Liquid detergent compositions
US3553016A (en) * 1967-06-02 1971-01-05 Lithcote Corp Method and composition for treating stainless steel
US3574135A (en) * 1968-02-20 1971-04-06 Franics R Sampson Production of improved thickened or thixotropic compositions from fluid energy milled colloidal silica
US3823094A (en) * 1969-01-08 1974-07-09 Colgate Palmolive Co Two part liquid car wash system
GB1303810A (fr) * 1969-05-02 1973-01-24
US3666670A (en) * 1969-08-01 1972-05-30 Vulcan Materials Co Pulverulent drain cleaning composition
US3708429A (en) * 1970-03-06 1973-01-02 Lever Brothers Ltd Cleaning compositions
US3997460A (en) * 1975-04-10 1976-12-14 The Clorox Company Liquid abrasive cleaner
US4028281A (en) * 1975-12-08 1977-06-07 Scott Paper Company Metal plate treating solution
GB1589971A (en) * 1976-10-11 1981-05-20 Unilever Ltd Built liquid detergent
US4051055A (en) * 1976-12-21 1977-09-27 The Procter & Gamble Company Cleansing compositions
US4235732A (en) * 1978-02-08 1980-11-25 The Procter & Gamble Company Liquid bleaching compositions
US4352678A (en) * 1978-10-02 1982-10-05 Lever Brothers Company Thickened abrasive bleaching compositions
US4457856A (en) * 1980-01-07 1984-07-03 The Procter & Gamble Company Liquid detergent composition contains abrasive particles, anionic and nonionic surfactants
US4390465A (en) * 1981-06-22 1983-06-28 Fremont Industries, Inc. Low temperature composition for plating pretreatment of ferrous metals
US4382825A (en) * 1981-07-08 1983-05-10 Amchem Products, Inc. Alkaline cleaner for ferrous-based metal surfaces
GB8308263D0 (en) * 1983-03-25 1983-05-05 Unilever Plc Aqueous liquid detergent composition
US4597888A (en) * 1985-06-19 1986-07-01 Parker Chemical Company Cleaner for steel cans

Also Published As

Publication number Publication date
US4731194A (en) 1988-03-15
ZA839237B (en) 1984-07-25
AU2230783A (en) 1984-06-21
EP0111285A2 (fr) 1984-06-20
AU558637B2 (en) 1987-02-05
JPS59117597A (ja) 1984-07-06
DE3366332D1 (en) 1986-10-23
DE3246080A1 (de) 1984-06-14

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