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WO1994003571A1 - Procede et composition aqueuse pour degraisser les surfaces metalliques - Google Patents

Procede et composition aqueuse pour degraisser les surfaces metalliques Download PDF

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Publication number
WO1994003571A1
WO1994003571A1 PCT/US1993/006604 US9306604W WO9403571A1 WO 1994003571 A1 WO1994003571 A1 WO 1994003571A1 US 9306604 W US9306604 W US 9306604W WO 9403571 A1 WO9403571 A1 WO 9403571A1
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WO
WIPO (PCT)
Prior art keywords
component
weight
range
atoms
metal surface
Prior art date
Application number
PCT/US1993/006604
Other languages
English (en)
Inventor
Lawrence R. Carlson
Philip M. Johnson
Dennis A. Kent
Original Assignee
Henkel Corporation
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 Corporation filed Critical Henkel Corporation
Priority to AU46768/93A priority Critical patent/AU4676893A/en
Publication of WO1994003571A1 publication Critical patent/WO1994003571A1/fr

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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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0073—Anticorrosion 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/08—Silicates
    • 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
    • C11D3/2068—Ethers
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
    • 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
    • C11D3/43—Solvents
    • 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
    • C23G1/22—Light metals
    • 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
    • C11D1/34—Derivatives of acids of phosphorus
    • C11D1/345—Phosphates or phosphites
    • 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

  • This invention relates to a process for degreasing metal surfaces, especially aluminum and aluminum alloy sur ⁇ faces used in the aerospace industry.
  • the aqueous based compositions provided by this invention are capable of giv ⁇ ing results as satisfactory as conventional vapor degreas ⁇ ing in organic solvents for removing fats, oils, waxes, and greases.
  • the metal working industry uses numerous mechanical processes such as stamping, cutting, welding, grinding, drawing, machining, and polishing in preparing the very wide variety of metal object manufactured.
  • oily lubricants and the like are used, and as a result an undesirable organic residue is left on the surfaces of the metal parts produces. This residue must be removed in most cases before the metal parts are either given protective surface finishes of any type or employed for their ultimately desired use.
  • degreasing compositions such as methyl ethyl ke- tone, methylene chloride, and the like, either at ambient temperature, or in more difficult cases, by exposing soiled metal parts to the vapors of constantly refluxing solvents of this type - a method known as vapor degreasing. Because most of the soil to be removed is composed of materials with substantially higher boiling points than the solvents used in vapor degreasing, the use of condensed vapor of the solvents assures that each fresh batch of metal parts to be cleaned will be exposed to relatively pure solvent with high dissolving power.
  • degreasing compositions such as methyl ethyl ke- tone, methylene chloride, and the like
  • Vapor degreasing is technically effective but econom ⁇ ically and environmentally disadvantageous.
  • the solvents are fairly expensive and are pollutants that require costly methods of disposition to satisfy environmental protection laws.
  • Elaborate apparatus and processes are needed to re ⁇ claim the dirty compositions for reuse, and the vapors from these solvents are often hazardous to human health.
  • many attempts have been made to replace vapor degreasing with aqueous based cleaners, but to date none has been entirely satisfactory, particularly in pre ⁇ paring the aluminum and aluminum alloy surfaces used in the aerospace industry, where the requirement for cleanliness are particularly stringent.
  • European Patent Application 0 376 367 published July 4, 1990 teaches an aqueous cleaner for metals containing a combination of surfactant, builders, corrosion inhibitor, and alkyl polyethylene glycol ether.
  • PCT Application WO 90/05770 published 31 May 1990 teaches a cleaner for hard surfaces comprising water solu ⁇ ble solvents and/or solubilizers, organic and/or inorganic builders, and an anionic surfactant component that includes both sulfated hydroxyalkyl-poly(ethylene/ propylene glycol) ethers and dialkyl sulfosuccinates.
  • U. S. Patent 4,746,453 of May 24, 1988 to Chen et al. teaches a cleaning composition for electrolytic cleaning, comprising alkali hydroxide, silicate, and nonionic sur ⁇ factant, preferably a combination of lauryl polyethylene glycol ether with about 10 moles of ethylene oxide per lauryl group and nonyl phenyl polyethylene glycol ether with about one mole of ethylene oxide per nonyl phenyl group.
  • U. S. Patent 4,710,232 of Dec. 1, 1987 to Tahbaz teaches (i) providing an alkaline cleaner comprising an aqueous solution of a soluble salt selected from the group consisting of alkaline carbonates, alkaline phosphates, alkaline silicates, alkaline sulfates, alkaline borates, sodium hydroxide, potassium hydroxide, and mixtures there ⁇ of; (ii) providing an emulsion cleaner comprising water, an organic solvent that may be or include a glycol ether, and a surfactant; (iii) mixing the alkaline and emulsion clean ⁇ ers; and (iv) contacting soiled metal surfaces with the mixture formed thereby for a sufficient time to remove the soil from the metal surfaces.
  • a soluble salt selected from the group consisting of alkaline carbonates, alkaline phosphates, alkaline silicates, alkaline sulfates, alkaline borates, sodium hydroxide, potassium hydro
  • aqueous cleaning solution that comprises, preferably consists es ⁇ sentially of, or more preferably consists of water and: (A) from 0.3 to 7, preferably from 0.45 to 2.0, more pref ⁇ erably from 0.60 to 1.50, parts by weight of an alka ⁇ line phosphate component selected from the group con ⁇ sisting of the water soluble salts of phosphoric and condensed phosphoric acids and mixtures thereof; (B) from 0.1 to 4, preferably from 0.20 to 1.5, more pref ⁇ erably from 0.20 to 0.80, parts by weight of an alka ⁇ line borate component selected from the group consist ⁇ ing of the water soluble salts of boric and condensed boric acids and mixtures thereof; (C) from 0.2 to 10, preferably from 0.45 to 3.0, more preferably from 0.60 to 2.0, parts by weight of a com ⁇ ponent of nonionic surfactant having an average hydro- phile-lipophile-balance ("HLB”) value within the range
  • HLB hydro-
  • the term "parts by weight” is referred to a total of 100 parts by weight in the total solution or other mixture so described, unless some explicit statement to the contrary is made herein;
  • the term “solution” includes true solutions and dispersions that are sufficiently stable to avoid visually detectable phase stratification for at least twenty-four hours at 25' C;
  • acids includes salts of hypothetical acids that correspond to the anions in the salts, as well as salts of acids that can be isolat ⁇ ed as free acids; and the term "anionic surfactant" in ⁇ cludes not only those surfactants that contain surface active anions before they are added to the aqueous solu- tions, but also surfactants such as the alkyl acid anhy ⁇ drides that form surface active anions when added to a bas ⁇ ic aqueous solution (as a result of rapid hydrolysis and at least partial neutralization of the resulting organic acid, in the case of alkyl acid anhydrides.) Otherwise, (i) the descriptions of particular chemical species refer predomi ⁇ nantly to the form in which the materials so described are added when preparing the solutions, and are not be under ⁇ stood as precluding chemical reactions among the species added which may lead to the presence in the solutions of chemical species other than those specifically added; and (ii) descriptions of a component as selected from a group of certain constituents is to
  • compositions as actually used in cleaning metals Another embodiment of the invention is a concentrate, which can be diluted with water to produce a working composition as defined above. Concentrates preferably contain from 3 to 20 times the con- centrations of each ingredient or component, except water, as described above for working solutions.
  • Another embodiment of the invention is a process of cleaning a soiled metal surface by contacting the soiled metal surface with an aqueous cleaning solution according to the invention for a sufficient time to transfer the soil originally on the metal surface to a dispersed state within the aqueous cleaning solution, as modified by the presence of the soil thus transferred.
  • the metal sur ⁇ face thus cleaned is subsequently removed from contact with the cleaning solution and rinsed at least once with water, with at least the last such rinse most preferably being with deionized, distilled, or otherwise purified water, before further processing or use.
  • At least 55, 80, or 95 % by weight of the alkaline phosphate component (A) as designated above is selected from alkali metal salts of condensed phosphoric acids, i.e., those con ⁇ taining at least two, more preferably exactly two, phos ⁇ phorus atoms per molecule.
  • the single most preferred con ⁇ stituent for this component is tetrapotassium pyrophos- phate.
  • At least 50, 70, or 95 % by weight of the alkaline borate com ⁇ ponent (B) as designated above is selected from alkali met ⁇ al, more preferably potassium and/or, most preferably, sod- ium salts of tetraboric acid.
  • At least 60, 80, or 95 % by weight of the nonionic surfactant component (C) as designated above is selected from mole ⁇ cules that could be made by condensing ethylene oxide with monofunctional alcohols that contain from 9 to 15 carbon atoms per molecule, and preferably, no other atoms than carbon, hydrogen, nitrogen, and a single hydroxyl oxygen in the alcohol molecule.
  • at least 20 %, or more preferably at least 35 %, by weight of this component be selected from each of the two groups consisting of (i) surfactants with an HLB value of 7.0 -
  • At least 60, 70, or 82 % by weight of the anionic surfactant component (D) as designated above is selected from mole ⁇ cules that are alkali metal salts of partial esters of a phosphoric acid with at least one organic alcohol.
  • At least 30, 55, 75, or 95 % by weight of the organic solvent component (E) as designated above is selected from mole ⁇ cules that contain (i) at least one ether bonded oxygen atom, (ii) at least one hydroxyl bonded oxygen atom, (iii) not more than 11, more preferably from 4 to 9, still more preferably from 6 to 8, carbon atoms, and, preferably (iv) no other atoms except those explicitly recited above and hydrogen atoms.
  • the two most preferred single materials for component (E) are the normal butyl ethers of ethylene glycol and diethylene glycol.
  • the organic corro ⁇ sion inhibitor component (F) as designated above is select- ed from molecules that (i) contain at least one nitrogen atom that is bound to exactly three other atoms exclusive of hydrogen atoms by single bonds and (ii) contain from 6 to 15 carbon atoms. Still more preferably, the inhibitor component (F) is selected partially or wholly from mole- cules containing a triazole ring structure.
  • At least 60, 80, or 95 % by weight of the alkaline hydroxide component (G) as designated above is selected from the group consisting of potassium and sodium hydroxides and mixtures thereof.
  • At least 30, 55, 75, or 95 % by weight of the alkaline sili ⁇ cate component (H) as designated above is selected from the group consisting of aqueous liquid sodium and/or, more preferably, potassium, soluble silicate preparations that have (i) a ratio by weight of alkali metal oxide equivalent to silicon dioxide equivalent in the range from 1:1 to 1:6, or more preferably in the range from 1.0:2.0 to 1.0:3.0, and (ii) a pH of at least 10.0, or more preferably at least 11.0.
  • a cleaning solution composition according to this in ⁇ vention preferably has a pH value within the range from 7.5 to 12, more preferably from 8.5 to 11.5, or still more preferably from 9.4 to 10.9.
  • a clean- ing solution according to this invention preferably has a total alkalinity value within the range from 0.5 to 35, more preferably from 0.8 to 11, or still more preferably from 1.0 to 7.0, points.
  • the points of free alkalinity are measured by titrating a " 5 milliliter sample of the solution with 0.1 N strong acid, using a bromocresol green indicat ⁇ or. The number of milliliters of acid required to reach the end point is the number of points of total alkalinity for the sample.
  • a separate composition comprising optional compon ⁇ ents (G) and (H) , and generally also comprising necessary component (E) in about the same percentage by weight as is desired in the final composition, is also stable in storage for a considerable time.
  • the adjunct composition contain- ing the optional components can then conveniently be mixed with the normal solution containing all the necessary com ⁇ ponents, and if needed or desired, with additional water, shortly before use, when a silicated cleaning solution is desired.
  • a silicated cleaning solution is generally pre- ferred for cleaning galvanized steel and most aluminum alloys, to avoid undesired etching of the surface to be cleaned.
  • a group of preferred concentrate compositions accord ⁇ ing to the invention contain, in % by weight of active in- gredients, exclusive of water, from 6.0 - 6.6 % of compon ⁇ ent (A), from 3.5 - 5.0 % of component (B) , from 6.0 - 8.0 % of component (C) , from 5.0 - 6.0 % of component (D) , from 5.0 - 9.0 % of component (E) , and from 0.012 - 0.05 % of component (F) , all the components identified by letter hav- ing the same meanings as described above for working compo ⁇ sitions, and water to form the remainder of the concen ⁇ trate.
  • a particularly preferred concentrate composition according to the invention contains the following amounts (in % by weight of active ingredients, exclusive of water) of the following components: 6.0 - 6.6 % Of K 4 P 2 0 7 , 3.5 - 5.0 % Of Na 2 B 4 0 7 ,
  • nonionic surfactant molecules that could be made by condensing ethylene oxide with monofunctional alcohols that contain from 9 to 13 carbon atoms per molecule and contain no other atoms than carbon, hy ⁇ drogen, nitrogen, and a single hydroxyl oxygen in the alcohol molecule, with at least one quarter of the total weight being selected from surfactants with an HLB value of 7.0 - 9.0 and at least one quarter of the total weight being selected from surfactants with an HLB value of 10.2 - 12.5,
  • a particularly preferred adjunct silicating composition ac ⁇ cording to the invention contains 0.4 - 0.5 % by weight of potassium hydroxide, 5.0 - 6.0 % by weight of soluble po- tassium silicate, and 9.0 - 11.0 % by weight of the mono- butyl ether of diethylene glycol.
  • Contact between the surface to be cleaned and a cleaning solution according to the invention may be achieved by any convenient method, such as immersing the surface in a container of the cleaning solution, spraying the cleaning solution on the surface to be cleaned, and the like, all as generally known per se in the art. Contact by immersion is preferred.
  • the compositions according to the invention are preferably used for cleaning at temperatures within the range from 30 to 80, more preferably from 40 to 70, or still more preferably from 50 to 60, * c.
  • the time of immersion contact between the surfaces to be cleaned and the compositions according to the invention preferably is from 1 to 30, more preferably from 5 to 20 sec, or still more preferably from 10 to 15, minutes (hereinafter abbrev ⁇ iated "min") . Within the ranges given, shorter times are usually sufficient to remove light oils, while longer times are needed to remove heavy greases.
  • the cleaning solutions and processes according to this invention are generally effective with any common struc ⁇ tural metal that is desired to be cleaned, but they are especially valuable for aluminum and its common commercial alloys, magnesium ana its common commercial a oys, ow alloy steel, cadmium plated steel, titanium and its common commercial alloys, nickel alloys and high nickel content ferrous alloys, and alloy-galvanized surfaces.
  • the workpieces may then be subjected to further surface treatments such as conversion coating, anodization, painting, and the like, as known per se in the art, in a process sequence that is within the scope of this invention.
  • Example 1 A suitable aqueous cleaning solution concentrate ac ⁇ cording to the invention containing only the necessary com ⁇ ponents (A) - (F) as described above was prepared by mixing the mixing the following ingredients in the order given (except that about 10 % of the total amount of water was retained for addition after all the other ingredients) :
  • Anionic surfactant chosen from TRITONTM H-55, TRITONTM H-66, TRITONTM QS-44, and mixtures 70.0 of any two or more of these
  • Nonenyl succinic anhydride (anionic surfactant) 15.0
  • Nonionic surfactant chosen from TRITONTM DF-12,
  • Nonionic surfactant chosen from ANTAROXTM BL-225, ANTAROXTM BL-330, ANTAROXTM BL-344, ANTAROXTM LF-330, PLURAFACTM RA-40, SURFONICTM LF-17, and ° mixtures of any two or more of these Nonionic surfactant chosen from GENAPOLTM 24-L-3,
  • Nonionic surfactant chosen from GENAPOLTM 24-L-45 NEODOLTM 25-7, NEODOLTM 23-6.5, NEODOLTM 91-6, TERGITOLTM 15-S-5, TERGITOLTM TMN-6, and 10.0 mixtures of any two or more of these
  • TRITONTM H-55, H-66, and QS-44 are described by their supplier as "phosphate surfactant, potassium salt" for both
  • TRITONTM DF-12, DF-16, and DF-18 are de ⁇ scribed by their supplier as "modified polyethoxylated straight chain alcohol; HLB: 10.6", “modified polyethoxyl ⁇ ated straight chain alcohol; HLB: 11.6", and “modified pol ⁇ yethoxylated alcohol; HLB: 11.3” respectively;
  • TRITONTM DF- 20 is described by its supplier as “anionic modified ethox- ylate"; all the TRITONTM products are commercially available from Union Carbide Corp.
  • MAKONTM NF-12 is described by its supplier, Stepan Co., as "polyalkoxylated aliphatic base”.
  • ANTAROXTM BL-225, BL-330, BL-344, and LF-330 are all com- suddenly available from Rh ⁇ ne-Poulenc Corp. and are all described by their supplier as "nonionic modified linear aliphatic polyethers”.
  • TERGITOLTM 15-S-3, 15-S-5, TMN-3, and TMN-6 are commercially available from Union Carbide Corp.
  • NEODOLTM 91-2.5, 91-6, 25-3, 25- 7, and 23-6.5 surfactants are commercially available from Shell Chemical Co.
  • C 9 - C linear primary alcohol ethoxylate for 91-2.5 and 91-6, with an HLB value of 8.1 for 91-2.5 and of 12.5 for 91-6; as “C 12 - C 15 linear primary alcohol ethoxylate” for 25-3 and 25-7, with an HLB value of 7.9 for 25-3 and of 12.2 for 25-7; as “C 12 - C 13 linear primary alcohol ethoxyl- ate” with an HLB value of 12.0 for 23-6.5; and as "C,, lin ⁇ ear primary alcohol ethoxylate” with an HLB value of 11.2 for 1-5.
  • COBRATECTM 700 and 725 are commercially available from PMC, Inc.; the compositions have not been disclosed by the manufacturer, except to state that 725 is a solution of the sodium salt of 700, but the latter is believed to be a triazole or a mixture of triazoles.
  • GENAPOLTM 24-L-3 and 24-L-45 are available from Hoechst-Celanese Corp and are described by their supplier as C 12 - c u synthetic linear alcohol ethoxylates" with an HLB value of 8.0 for 24-L-3 and of 11.8 for 24-L-45.
  • PLURAFACTM RA-40 is commercially available from BASF Corp. and is described by its supplier as "nonionic modified oxyethylated straight chain alcohol; HLB: 7.0".
  • SURFONICTM LF-17 is commercially available from Texaco Chemical Co. and is described by its supplier as "nonionic alkyl polyoxyalkylene ether; HLB: 12.2.”
  • a suitable aqueous cleaning solution concentrate ac ⁇ cording to the invention containing only the necessary com- ponents (A) - (F) as described above was prepared by mixing the following ingredients in the order given (except that about 10 % of the total amount of water was retained for addition after all the other ingredients) :
  • Nonionic surfactant chosen from GENAPOLTM 24-L-3, NEODOLTM 91-2.5, NEODOLTM 25-3, NEODOLTM 1-5, TERGITOLTM 15-S-3, TERGITOLTM TMN-3, and 4U*U mixtures of any two or more of these
  • Nonionic surfactant chosen from GENAPOLTM 24-L-45, NEODOLTM 25-7, NEODOLTM 23-6.5, NEODOLTM 91-6, TERGITOLTM 15-S-5, TERGITOLTM TMN-6, and 4U,U mixtures of any two or more of these
  • Monobutyl ether of diethylene glycol 90.0 Corrosion inhibitor chosen from COBRATECTM 700, COBRATECTM 725, and mixtures of these 0.5.
  • a silicating additive concentrate composition suit ⁇ able for mixing with a cleaning solution containing only the necessary components according to the invention, was prepared by mixing the following ingredients in the order given (except that about 10 % of the total amount of water was retained for addition after all the other ingredients) :

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

Abstract

Un nettoyant alcalin aqueux pouvant remplacer le dégraissage à la vapeur pour les alliages d'aluminium critiques employés en aéronautique comprend essentiellement de l'eau et un phosphate alcalin, un borate alcalin, un agent tensio-actif non-ionisant ayant une valeur HLB comprise entre environ 7 et 13, l'agent tensio-actif non ionisant comprenant des esters partiels d'acides organophosphoniques, un solvant organique miscible avec l'eau, un inhibiteur organique de corrosion et également, de préférence, un hydroxyde alcalin et un silicate alcalin.
PCT/US1993/006604 1992-07-31 1993-07-16 Procede et composition aqueuse pour degraisser les surfaces metalliques WO1994003571A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46768/93A AU4676893A (en) 1992-07-31 1993-07-16 Process and aqueous composition for degreasing metal surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92327692A 1992-07-31 1992-07-31
US07/923,276 1992-07-31

Publications (1)

Publication Number Publication Date
WO1994003571A1 true WO1994003571A1 (fr) 1994-02-17

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PCT/US1993/006604 WO1994003571A1 (fr) 1992-07-31 1993-07-16 Procede et composition aqueuse pour degraisser les surfaces metalliques

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CN (1) CN1087686A (fr)
AU (1) AU4676893A (fr)
MX (1) MX9304495A (fr)
WO (1) WO1994003571A1 (fr)
ZA (1) ZA935318B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691421A1 (fr) * 1994-06-07 1996-01-10 Betz Europe, Inc. Agent de nettoyage pour l'aluminium ayant la propriété de chivage d'émulsions d'huile et procédé
EP0845025A4 (fr) * 1995-07-25 2000-02-23 Henkel Corp Composition et procede de degraissage de surfaces metalliques
EP1036144A4 (fr) * 1997-11-13 2002-09-04 Henkel Corp Composition et procede aux fins du nettoyage et de la desoxydation de l'aluminium
WO2013011066A1 (fr) * 2011-07-18 2013-01-24 Messier-Bugatti-Dowty Bain de nettoyage pour pieces en alliage de metaux
RU2507246C1 (ru) * 2012-12-11 2014-02-20 Закрытое акционерное общество "ФК" Моющее средство для обезжиривания холоднокатанной черной жести в рулонах
CN105002001A (zh) * 2015-05-29 2015-10-28 武汉钢铁(集团)公司 冷轧油泥脱脂剂及其使用方法

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CN1308488C (zh) * 2003-06-28 2007-04-04 东风汽车公司 用于金属表面脱脂的水溶性化合物
CN104438286B (zh) * 2014-11-14 2016-08-24 西南石油大学 一种油基钻屑除油方法
CN108453129A (zh) * 2017-02-20 2018-08-28 上海伊尔庚环境工程有限公司 污染土壤蒸汽浸提修复系统及方法
US11643731B2 (en) * 2017-08-31 2023-05-09 Chemetall Gmbh Method for nickel-free phosphating metal surfaces
CN112410723A (zh) * 2020-11-27 2021-02-26 杭州和源精密工具有限公司 一种锯片pvd涂层前清洗方法
CN115213253A (zh) * 2022-08-09 2022-10-21 北京首钢吉泰安新材料有限公司 一种拔丝粉清洗试剂及其制备方法

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691421A1 (fr) * 1994-06-07 1996-01-10 Betz Europe, Inc. Agent de nettoyage pour l'aluminium ayant la propriété de chivage d'émulsions d'huile et procédé
EP0845025A4 (fr) * 1995-07-25 2000-02-23 Henkel Corp Composition et procede de degraissage de surfaces metalliques
US6328816B1 (en) 1995-07-25 2001-12-11 Henkel Corporation Composition and method for degreasing metal surfaces
EP1036144A4 (fr) * 1997-11-13 2002-09-04 Henkel Corp Composition et procede aux fins du nettoyage et de la desoxydation de l'aluminium
WO2013011066A1 (fr) * 2011-07-18 2013-01-24 Messier-Bugatti-Dowty Bain de nettoyage pour pieces en alliage de metaux
FR2978166A1 (fr) * 2011-07-18 2013-01-25 Messier Bugatti Dowty Bain de nettoyage pour pieces en alliage de metaux
RU2507246C1 (ru) * 2012-12-11 2014-02-20 Закрытое акционерное общество "ФК" Моющее средство для обезжиривания холоднокатанной черной жести в рулонах
CN105002001A (zh) * 2015-05-29 2015-10-28 武汉钢铁(集团)公司 冷轧油泥脱脂剂及其使用方法
CN105002001B (zh) * 2015-05-29 2019-01-11 武汉钢铁有限公司 冷轧油泥脱脂剂及其使用方法

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MX9304495A (es) 1994-03-31
CN1087686A (zh) 1994-06-08
AU4676893A (en) 1994-03-03

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