US3481877A - Cleaning solution concentrate and method of preparing same - Google Patents

Cleaning solution concentrate and method of preparing same Download PDF

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Publication number
US3481877A
US3481877A US619034A US3481877DA US3481877A US 3481877 A US3481877 A US 3481877A US 619034 A US619034 A US 619034A US 3481877D A US3481877D A US 3481877DA US 3481877 A US3481877 A US 3481877A
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United States
Prior art keywords
weight
water
compound
cleaning
potassium hydroxide
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Expired - Lifetime
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US619034A
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English (en)
Inventor
Karl Moll
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Henkel Corp
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Amchem Products Inc
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Assigned to AMCHEM PRODUCTS, INC. A CORP. OF DEL. reassignment AMCHEM PRODUCTS, INC. A CORP. OF DEL. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: AMCHEM PRODUCTS, INC. (MERGED INTO), HHC, INC. (CHANGED TO)
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Classifications

    • 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
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/36—Alkaline compositions for etching aluminium or alloys thereof

Definitions

  • the invention when used as hereinafter prescribed, will not only be most effective in cleaning the above mentioned aluminum articles but will also, when compared to other aqueous alkaline cleaning materials, yield a treating solution which provides for a minimum amount of equipment maintenance to the user.
  • a method for compounding a superior aqueous concentrate for use in cleaning and/ or etching aluminum, which method insures production of a stable concentrate.
  • the principal object of the present invention is the provision of a stable, consolute, concentrated, aqueous chemical composition, which provides, upon simple dilution with water, all of the essential components required for purposes of cleaning and/ or eaching aluminum, so as to produce thereon clean, bright surfaces suitable for further processing in the metal treating industry.
  • Another object of the present invention is the provision of a method for compounding a stable consolute cleaning concentrate.
  • the present invention is based upon the surprising discovery that a concentrated aqueous solution containing, per parts of solution, by weight,
  • the cleaning concentrates of the present solution are used for cleaning and/ or etching aluminum in dilute form. Generally, they are diluted with water for use, sufiicient Water being employed to yield a final concentration, for example, from 1 gram to 15 grams per liter of potassium hydroxide or equivalent.
  • gluconate ion employed is below about 0.15% by weight of the total formulation, the combined desired chelation effects and brightening of treated aluminum surfaces will not be obtained and hard, scaly deposits will be formed in the aluminum treating tanks. Conversely, increasing the amount of gluconate above about 30% by weight of the total formulation, may adversely effect formulation stability causing a separation of phases.
  • the gluconate ion may be added to the formulation as gluconic acid or the sodium or potassium salts thereof. If desired this acid or its salts may be dissolved in a portion of the water and added to the formulation as an aqueous solution.
  • the water component must be present in an amount of from about 19% to about 64% by weight, based on the weight of the total composition. Where formulations are prepared containing less than about 19% by weight of water, the improved stability otherwise obtainable with this invention will not always be realized. Conversely, if more than about 64% by weight of water is employed, the formulations will not provide a sufiicient concentration of active aluminum cleaning and etching components so as to represent a commercially feasible concentrate.
  • ethyleneglycol compound has been found to be essential to the formulations of this invention in order to provide an adequate level of soil removal from the aluminum articles being treated.
  • ethyleneglycol compounds which have been found to be suitable for use in the concentrated formulations of this invention include ethyleneglycol and derivatives thereof and have the formula:
  • ethyleneglycol compound includes ethyleneglycol and derivatives thereof as defined by the above formula.
  • a prime advantage in the utilization of these materials, in comparison to other organic solvents, is their water solubility and tolerance toward inorganic ions in solution, which eliminates the necessity of adding solubilizing and/or emulsifying agents to the formulations in order to prevent solvent separation upon dilution to use concentration.
  • R is selected from the group consisting of hydrogen and --CH CH OH, and R is selected from the group consisting of H, CH CH OH, CH CH NH and alkyl radicals containing from 1 to 3 carbon atoms.
  • ethanolamine compound includes ethanolamine and derivatives thereof as defined by the above formula.
  • the ethanolamine compound imparts a chelating action with respect to heavy metal ions present in the aqueous treating solutions. Such ions are obtained largely from alloying components present in the aluminum articles.
  • this essential constituent aids in brightening aluminum surfaces. Moreover, this essential component, because of its solvency action, aids in the removal of certain soils found on many aluminum articles being treated.
  • the ethanolamine compound is essential in the formulations of this invention in providing physical stability to the concentrate.
  • ethanolamine compound present in the formulations of this invention it has been found that this material must be present in a quantity of not less than about 1.7% and should not exceed about 38% by weight of the total composition, depending upon the quantities of other materials present.
  • the amount of ethanolamine compound utilized is less than about 1.7 of the total composition, there may be insufficient chelation action for heavy metal ions thereby resulting in undesirable precipitation of metallic deposits on the surfaces of the aluminum articles being treated.
  • Use of less than the minimum amount of ethanolamine compound will also result in failure to obtain desirably clean and bright aluminum surfaces.
  • the amount of ethanolamine compound can be greater than about 38% by weight, but from an economic standpoint it is not desirable to use such larger amounts.
  • those formulations containing relatively high amounts of potassium hydroxide, gluconate and ethyleneglycol compound in particular, the amounts of ethanolamine being on the lower side of the specified range may not result in a completely homogenous aqueous concentrate.
  • an ethyleneglycol compound are added to a mixture of 60 grams of potassium hydroxide, 11.5 grams of potassium gluconate, 80.5 grams of water and 25 grams of triethanolamine, mixed thoroughly and examined, the result will be seen to be a non-homogenous mixture.
  • Example I Percent by weight Potassium hydroxide 32.0 Gluconate ion (as K salt) 6.15 Ethyleneglycolmonobutylether 5.34 Triethanolamine 13.37 Water 43.14
  • Example 11 oughly dissolved to provide the composition of Example 11 below, the result is a true homogenous, stable, consolute, concentrated aqueous embodiment of the present invention.
  • the minimum amount of any ethanolamine compound required for complete formulation stability will depend primarily upon the relative amounts of the other active materials present in the formulations of this invention. Where the amounts are relatively high, the minimum concentration of the ethanolamine compound will be relatively high. Where the amounts of other atcive materials are relatively low, the minimum concentration of the ethanolamine compound will be lowered accordingly.
  • the concentration of the ethanolamine compound must be at least about 1.7 parts by weight, and must not exceed about 38 parts by weight.
  • the minimum concentration of the ethanolamine compound must meet a further requirement, that of being present in an amount large enough to establish and maintain a consolute single phase solution.
  • the minimum concentration of the ethanolamine compound which meets this requirement is, Within the above range, relatively high when the concentrations of the other active ingredients, (those other than water) is high, and is relaitvely low within the above range when the concentration of the other active ingredients is low.
  • the concentrate is prepared by first mixing with Water the three active ingredients other than the ethanolamine compound, that is to say, the hydroxide, the gluconate, and the ethyleneglycol compound. Then ethanolamine compound is added, and the solution is observed during the addition thereof. Suflficient ethanolamine compound is added to convert the partially prepared solution from twophase into a single phaes, in the event that is not single phase before the addition of the ethanolamine compound. By adding the ethanolamine compound last, assurance is obtained that a sufficient amount is added to yield a stable product, and the point at which such amount has been added can readily be observed.
  • the three active ingredients other than the ethanolamine compound that is to say, the hydroxide, the gluconate, and the ethyleneglycol compound.
  • Suflficient ethanolamine compound is added to convert the partially prepared solution from twophase into a single phaes, in the event that is not single phase before the addition of the ethanolamine compound.
  • Example XV Potassium hydroxide 18.55 Gluconate ion (as Na salt) 3.71 Triethylene glycol 9.09 Ethyleneglycolmonoethylether 3.80 N-methyl-diethanolamine 6.40 Water 58.45 0 F. 190 F.
  • a stable, consolute, concentrated, aqueous chemical composition for use, upon dilution, as a cleaner and etcher of aluminum surfaces, said composition consisting essentially of: from about 4.6 to about 42 parts by weight of a hydroxide selected from the class consisting of sodium and potassium hydroxide, from about 0.15 to about 30 parts by weight of gluconate, from about 19 to about 64 parts by weight of water, from about 0.43 to about 54 parts by weight of an ethyleneglycol compound of the type having the formula 8 wherein R is selected from the group consisting of hydrogen and CH CH OH and R is selected from the group consisting of hydrogen,
  • ethanolamine compound being present in an amount comprising at least about 1.7 parts by Weight and suflicient, in relation to the amounts and proportions of other components, to establish and maintain a stable, consolute, single phase solution, but not more than about 38 parts by weight.
  • a method for preparing a stable consolute concentrated aqueous chemical composition for use, upon dilution, as a cleaner and etcher of aluminum surfaces comprising: mixing together from about 4.6 to about 42 parts by weight of a hydroxide selected from the class consisting of sodium and potassium hydroxide, from about 0.15 to about 30 parts by weight of gluconate, from about 19 to about 64 parts by weight of water, from about 0.43 to about 54 parts by weight of an ethyleneglycol compound of the type having the formula R OCH CH OR wherein R is selected from the group consisting of hydrogen and alkyl-radicals containing from 1 to 4 carbon atoms and R is selected from the group consisting of hydrogen, the -CH CH OH radical and the CH -CH OCH CH OH radical, and adding to said mixture an ethanolamine compound of the type having the formula R3 HO-CH2-CHz-N wherein R is selected from the group consisting of hydrogen and CH CH OI-I and R is selected from the group consisting of hydrogen, -CH

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)
  • ing And Chemical Polishing (AREA)
US619034A 1967-02-27 1967-02-27 Cleaning solution concentrate and method of preparing same Expired - Lifetime US3481877A (en)

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US61903467A 1967-02-27 1967-02-27

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US3481877A true US3481877A (en) 1969-12-02

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US (1) US3481877A (enrdf_load_stackoverflow)
JP (1) JPS509732B1 (enrdf_load_stackoverflow)
GB (1) GB1160945A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859132A (en) * 1972-12-07 1975-01-07 Whitfield Richards Co G Method of cleaning and lubricating copper
US4351895A (en) * 1981-10-19 1982-09-28 American Hoechst Corporation Deletion fluid for positive printing plates
US4477290A (en) * 1983-01-10 1984-10-16 Pennwalt Corporation Cleaning and etching process for aluminum containers
US4793865A (en) * 1987-08-19 1988-12-27 Aqua Process, Inc. Method and composition for the removal of ammonium salt and metal compound deposits
US4880568A (en) * 1987-08-19 1989-11-14 Aqua Process, Inc. Method and composition for the removal of ammonium salt and metal compound deposits
US4888090A (en) * 1986-12-10 1989-12-19 Pennwalt Corporation Etchant for aluminum containing surfaces and method
US4897122A (en) * 1986-08-11 1990-01-30 Schreiber A Charles Process, composition and apparatus for cleaning venetian blinds
EP0376367A1 (de) * 1988-12-29 1990-07-04 METALLGESELLSCHAFT Aktiengesellschaft Wässriger Reiniger für Metalloberflächen
US5186790A (en) * 1990-11-13 1993-02-16 Aluminum Company Of America Chemical milling of aluminum-lithium alloys
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
US5643474A (en) * 1995-12-26 1997-07-01 General Electric Company Thermal barrier coating removal on flat and contoured surfaces
CN112912466A (zh) * 2018-10-24 2021-06-04 三菱制纸株式会社 树脂组合物的蚀刻液及蚀刻方法
CN113348226A (zh) * 2019-01-28 2021-09-03 三菱制纸株式会社 树脂组合物的蚀刻液及蚀刻方法
CN113614204A (zh) * 2019-04-03 2021-11-05 三菱制纸株式会社 液晶聚合物用蚀刻液及液晶聚合物的蚀刻方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53140241A (en) * 1977-05-13 1978-12-07 Okuno Chem Ind Co Alkali etching component of aluminium material and alkali etching method
GB8429709D0 (en) * 1984-11-23 1985-01-03 Alcan Int Ltd Halogen-containing organic compounds
JPS61144570U (enrdf_load_stackoverflow) * 1985-02-27 1986-09-06
US7030034B2 (en) * 2003-09-18 2006-04-18 Micron Technology, Inc. Methods of etching silicon nitride substantially selectively relative to an oxide of aluminum
JP5688639B2 (ja) * 2010-12-24 2015-03-25 日本パーカライジング株式会社 アルミニウム合金用エッチング剤

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869267A (en) * 1957-02-28 1959-01-20 Turco Products Inc Method of etching aluminum and aluminum alloys
US2872301A (en) * 1955-03-31 1959-02-03 Pennsalt Chemicals Corp Chemical composition and process for aluminum etching

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872301A (en) * 1955-03-31 1959-02-03 Pennsalt Chemicals Corp Chemical composition and process for aluminum etching
US2869267A (en) * 1957-02-28 1959-01-20 Turco Products Inc Method of etching aluminum and aluminum alloys

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859132A (en) * 1972-12-07 1975-01-07 Whitfield Richards Co G Method of cleaning and lubricating copper
US4351895A (en) * 1981-10-19 1982-09-28 American Hoechst Corporation Deletion fluid for positive printing plates
US4477290A (en) * 1983-01-10 1984-10-16 Pennwalt Corporation Cleaning and etching process for aluminum containers
US4897122A (en) * 1986-08-11 1990-01-30 Schreiber A Charles Process, composition and apparatus for cleaning venetian blinds
US4888090A (en) * 1986-12-10 1989-12-19 Pennwalt Corporation Etchant for aluminum containing surfaces and method
US4793865A (en) * 1987-08-19 1988-12-27 Aqua Process, Inc. Method and composition for the removal of ammonium salt and metal compound deposits
US4880568A (en) * 1987-08-19 1989-11-14 Aqua Process, Inc. Method and composition for the removal of ammonium salt and metal compound deposits
EP0376367A1 (de) * 1988-12-29 1990-07-04 METALLGESELLSCHAFT Aktiengesellschaft Wässriger Reiniger für Metalloberflächen
US5512129A (en) * 1990-03-15 1996-04-30 Josef Gartner & Co. Method for regenerating alkaline solutions for pickling aluminum
US5186790A (en) * 1990-11-13 1993-02-16 Aluminum Company Of America Chemical milling of aluminum-lithium alloys
US5643474A (en) * 1995-12-26 1997-07-01 General Electric Company Thermal barrier coating removal on flat and contoured surfaces
CN112912466A (zh) * 2018-10-24 2021-06-04 三菱制纸株式会社 树脂组合物的蚀刻液及蚀刻方法
CN113348226A (zh) * 2019-01-28 2021-09-03 三菱制纸株式会社 树脂组合物的蚀刻液及蚀刻方法
CN113614204A (zh) * 2019-04-03 2021-11-05 三菱制纸株式会社 液晶聚合物用蚀刻液及液晶聚合物的蚀刻方法

Also Published As

Publication number Publication date
JPS509732B1 (enrdf_load_stackoverflow) 1975-04-15
GB1160945A (en) 1969-08-06

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Date Code Title Description
AS Assignment

Owner name: AMCHEM PRODUCTS, INC. A CORP. OF DEL.

Free format text: MERGER;ASSIGNORS:AMCHEM PRODUCTS, INC. (MERGED INTO);HHC, INC. (CHANGED TO);REEL/FRAME:004102/0461

Effective date: 19810320