EP0533823A1 - Behandlungsverfahren von aluminium- oder blechdosen zur erhöhung der korrosionsbeständigkeit und zur verringerung des reibungskoeffizienten und zusammensetzung der behandlungsflüssigkeit. - Google Patents

Behandlungsverfahren von aluminium- oder blechdosen zur erhöhung der korrosionsbeständigkeit und zur verringerung des reibungskoeffizienten und zusammensetzung der behandlungsflüssigkeit.

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Publication number
EP0533823A1
EP0533823A1 EP91912131A EP91912131A EP0533823A1 EP 0533823 A1 EP0533823 A1 EP 0533823A1 EP 91912131 A EP91912131 A EP 91912131A EP 91912131 A EP91912131 A EP 91912131A EP 0533823 A1 EP0533823 A1 EP 0533823A1
Authority
EP
European Patent Office
Prior art keywords
liquid composition
component
tin
aluminum
composition according
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.)
Granted
Application number
EP91912131A
Other languages
English (en)
French (fr)
Other versions
EP0533823B1 (de
Inventor
Shigeo Tanaka
Tomoyuki Aoki
Masayuki Yoshida
Yasuo Iino
Shinichiro Nihon Parkeriz Asai
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 Corp
Original Assignee
Henkel Corp
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
Priority claimed from JP16044390A external-priority patent/JPH0450272A/ja
Priority claimed from JP17927190A external-priority patent/JPH0466671A/ja
Application filed by Henkel Corp filed Critical Henkel Corp
Publication of EP0533823A1 publication Critical patent/EP0533823A1/de
Application granted granted Critical
Publication of EP0533823B1 publication Critical patent/EP0533823B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/23—Condensed phosphates
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8

Definitions

  • the present invention relates to a novel liquid compo ⁇ sition for treating the surface of tin-plated steel and/or aluminum and alloys that are predominantly aluminum (both the pure metal and alloys being denoted hereinafter by the word "aluminum” unless the context requires otherwise) , particularly the surfaces of drawn-and-ironed (hereinafter "DI") cans made from these materials.
  • the composition im ⁇ parts an excellent corrosion resistance and paint adhes- iveness to the surface of such a can after its formation by the drawing and ironing of metal sheet but before its painting or printing.
  • This novel liquid composition also imparts the excellent mobility or slideability, i.e., low frictional resistance, which is required for the smooth conveyor transport of such a can.
  • the composition also is relatively low in pollution potential, because it contains no deliberately introduced chromate or fluorine.
  • the in ⁇ vention also relates to processes for using the composi ⁇ tion according to the invention. BACKGROUND ART
  • This particular invention comprises a film-forming liquid composition for the treatment of met ⁇ al surfaces in which the liquid composition has a pH of 2 to 6 and contains 1 to 50 g/L of phosphate ions, 0.2 to 20.0 g/L of oxyacid ions, 0.01 to 5.0 g/L of tin ions, and 0.01 to 5.0 g/L of condensed phosphate ion.
  • Treatment with this conversion treatment liquid composition lays down a strongly corrosion-resistant phosphate film on the surface of a tin-plated DI can.
  • the treatment baths previously employed to treat the surface of aluminum and aluminum alloy of the aforemen- tioned type can be generally classified into chromate types and non-chromate types.
  • the chromate types typically take the form of chromic acid chromate conversion treatments and phosphoric acid chromate conversion treatments. Chromic acid chromate conversion treatments entered into practical application in about 1950, and these are still widely used for heat exchanger fin material and the like.
  • This type of conversion treatment bath is based on chromic acid (CrO ) and hydrofluoric acid (HF) and also contains an accelerat ⁇ or. It lays down a film which contains modest quantities of hexavalent chromium.
  • CrO chromic acid
  • H PO phosphoric acid
  • HF hydrofluoric acid
  • the invention disclosed in Japanese Patent Application Laid Open [Kokai or Unexamined] Number 52-131937 [131,937/ 77] is a typical prior art example within the realm of non- chromate types of treatments for aluminum.
  • the application of this conversion treatment bath exemplary of the prior art to the surface of aluminum generates a conversion film whose principal component is zirconium oxide or titanium oxide.
  • the high friction coefficient of the exterior can surface causes the can surface to have a poor slideability during conveyor transport of the can, which causes the can to tumble over sideways and thus impairs the transport operation.
  • Can transportability is a particular issue with respect to transport to the printer in a high speed continuous manu ⁇ facturing plant. It is therefore important in the can man ⁇ ufacturing industry to reduce the static friction coeffi ⁇ cient of the exterior can surface without compromising the adhesiveness of any paint or lacquer to be coated on the can.
  • the invention disclosed in (3) Japanese Patent Appli ⁇ cation Laid Open Number 64-85292 [85,292/89] is an example of a method for improving the slideability. This inven- tion concerns an agent for treating the surfaces of metal cans.
  • This particular agent contains water-soluble organ ⁇ ic material selected from phosphate esters, alcohols, monovalent and polyvalent fatty acids, fatty acid deriva- tives, and mixtures of the preceding. DESCRIPTION OF THE INVENTION Problems to Be Solved by the Invention
  • the above-described invention (1) does lead to the formation of a strongly corrosion-resistant phosphate film on conventional tin-plated DI can; however, the tin-plated DI can produced over the last few years has used smaller quantities of tin plating in response to economic pres ⁇ sures. This has necessitated surface treatments with a far better corrosion resistance than before, and this demand is not entirely satisfied by invention (1) .
  • the other above described inventions do not always result in a satisfac ⁇ torily stable corrosion resistance with the tin-plated DI can produced over the last few years or with aluminum cans.
  • the above-described invention (3) does in fact im- prove the slideability, but it sometimes does not improve the corrosion resistance or paint adhesiveness to an ade ⁇ quate degree.
  • the present inven ⁇ tion provides a liquid composition for treating the surface of tin-plated DI can, said liquid composition being char ⁇ acterized by a pH of 2.0 to 6.5 and containing 1 to 30 g/L of phosphate ions, 0.1 to 5 g/L of condensed phosphate ion if used on tin plated steel or 0.1 to 10 g/L of condensed phosphate ions if used on aluminum, and 0.1 to 20 g/L (as solids) of water-soluble resin with the following general formula:
  • n is an integer within the range from 10 to 80 in ⁇ clusive; each of X and Y is independently selected from hy ⁇ drogen or a group "Z" with the formula given below, except that at leas 15 % of the total of all the X and Y groups in this component of the composition are Z rather than hy ⁇ drogen; and
  • each of R and R independently is a C to C. _ alkyl and/or hydroxyalkyl group.
  • a surface-treatment liquid composition according to the present invention provides an aluminum or a tin-plated DI can surface with an- excellent corrosion re ⁇ sistance and paint adhesiveness prior to its painting or printing and also generates the excellent slideability nec ⁇ essary for smooth conveyor transport of the can. Finally, because the treatment bath according to the present inven ⁇ tion does not contain chromium or fluorine, the waste water treatment load is substantially reduced compared to most prior treatment baths, especially for aluminum. Details of Preferred Embodiments of the Invention
  • the surface-treatment liquid composition according to the present invention is an acidic treatment liquid compo ⁇ sition whose essential components are phosphate ions, con ⁇ densed phosphate ions, and water-soluble resin of a par ⁇ ticular type.
  • the phosphate ions can be introduced into the treat ⁇ ment liquid composition using phosphoric acid (H_PO.) , sod ⁇ ium phosphate (Na_PO ) , and the like. Its content should fall within the range preferably of 1 to 30 g/L and more preferably of 5 to 15 " g/L. At below 1 g/L, the reactivity is relatively poor and film formation generally will not be satisfactory.
  • the condensed phosphate ions are selected from pyro- phosphate ions, tripolyphosphate ions, and tetrapolyphos- phate ions.
  • the acid or salt can be used to introduce the condensed phosphate ions.
  • pyrophosphate ions when pyrophosphate ions are to be introduced, pyrophosphoric acid (H.P_0 ) , sodium pyrophosphate (Na.P 0_) , and the like can be used.
  • This component should be present at 0.1 to 5 g/L for treating tin plated steel or at 0.1 to 10 g/L for treating aluminum, and the range of 0.4 to 1 g/L for tin plate or 1.0 to 4.0 g/L for aluminum is particularly preferred. At values less than 0.1 g/L, a satisfactory film will not be formed because of weak etching activity. However, the etching activity is undesirably high at values in excess of 5 g/L on tin plate or 10 g/L on aluminum, and the film- forming reaction is inhibited.
  • the water-soluble resin used by the present invention comprises polymers with the general formula already given above.
  • the molecular weight is too low at values of n in this formula below 10, so that little or no improvement in corrosion resistance will normally be observed.
  • the aqueous solution has a reduced stability, which will normally generate problems in practi ⁇ cal applications.
  • Functional groups R ⁇ or R 2 containing 11 or more carbons usually would reduce the stability of an aqueous solution containing them.
  • the group Z is prefer ⁇ ably -CH 2 N(CH 3 ) 2 or -CH 2 N(CH 3 )CH 2 CH 2 OH. When less than 15 % of the total of all the X's and Y's in the resin are Z, there are usually stability problems with the compositions that would otherwise be according to the invention.
  • the water soluble resin should be present at a concen ⁇ tration of from 0.1 to 20 g/L on a solids basis. At values less than 0.1 g/L, stable film formation on the can surface highly problematic. Values in excess of 20 g/L are uneco ⁇ nomical due to the increased cost of the treatment solu ⁇ tion.
  • the pH of the treatment liquid composition must be from 2.0 to 6.5. Etching is heavy and film formation is impaired at pH values less than 2.0. At values in excess of 6.5, the liquid composition life is shortened because the resin tends to precipitate and sediment.
  • the pH can be adjusted through the use of an acid, for example, phos ⁇ phoric acid, nitric acid, hydrochloric acid, hydrofluoric acid (if waste water contamination with fluoride is not a problem) , and the like, or through the use of a base, for example, sodium hydroxide, sodium carbonate, ammonium hy ⁇ droxide, and the like.
  • metal ions e.g., tin, aluminum, or iron
  • metal ions e.g., tin, aluminum, or iron
  • a chelating agent in addition to the resin as specified above should preferably be added to the treatment liquid composition in such cases. While this chelating agent is not specifically restricted, chelating agents use ⁇ ful within this context are exemplified by tartaric acid, ethanolamine, gluconic acid, oxalic acid, and the like.
  • the method for preparing the surface-treatment liquid composition according to the present invention can be briefly described as follows. Prescribed quantities of phosphate ions and condensed phosphate ions as described above are dissolved in water with thorough stirring. When the pH of this liquid composition is not already less than 7, it is adjusted to below 7 using the appropriate acid as noted above. The water-soluble resin specified by the present invention is then added and completely dissolved while stirring, and the pH is adjusted if necessary as dis ⁇ cussed above.
  • the film which is formed by means of the present in ⁇ vention's surface-treatment liquid composition is believed to be an organic and inorganic composite film which is com- posed primarily of the resin and phosphate salts (the main component is believed to be tin phosphate when tin plated substrates are treated) .
  • the substrate is etched by the phosphate ions and condensed phosphate ions, the pH at this time is locally increased at the interface, and phosphate salt is deposited on the surface.
  • the amino group in the resin has a chelating activity, and it may form a type of coordination compound with the fresh surface of the substrate generated by etching.
  • the simul- taneous presence of the condensed phosphate ions is thought to promote formation of resin/metal coordination compounds, and this may make possible the stable formation of the com ⁇ posite film on the surface over a broad pH range.
  • a process according to the invention for treating tin- plated DI can using a surface-treatment liquid composition of the present invention will now be considered.
  • the pres ⁇ ent invention's treatment liquid composition can be applied by the following process sequence, which is a preferred se ⁇ quence for a process according to this invention.
  • Surface cleaning degreasing (a weakly alkaline cleaner is typically used on tin-plated DI can, while an alkaline, acidic, or solvent based degreaser may be effectively used on aluminum cans.)
  • Treatment temperature ambient to 80 ° C treatment method: spray treatment time: 2 to 60 seconds
  • a surface-treatment liquid composition according to the present invention can conveniently be used at treatment temperatures from room temperature up to 80 ° C; however, it is generally preferably used at 40 to 60 ° C.
  • the spray time preferably should be 2 to 60 seconds. At less than 2 seconds, a highly corrosion-resistant film will not usually be formed. No improvement in performance is observed for treatment times in excess of 60 seconds, but the cost is increased. Accordingly, the preferable treatment time will fall in the range from 2 to 60 seconds.
  • the corrosion resistance of treated tin plated cans was evaluated using the iron exposure value ("IEV") , which was measured in accordance with the teaching of United States Patent No. 4,332,646. The corrosion resistance is better at lower IEV values, and a score below 150 is gener ⁇ ally regarded as excellent.
  • the paint adhesiveness was evaluated based on the peel strength as follows: The surface of the treated can was coated with an epoxy/urea can paint to a film thickness of 5 to 7 micrometers; this was baked at 215 ° C for 4 min ⁇ utes; the can was then cut into a 5 x 150 mm strip; a test specimen was prepared by hot-press adhesion with polyamide film; and this was peeled by the 180 ° peel test method. Accordingly, the paint adhesiveness improves as the peel strength increases, and values in excess of 1.5 kilograms of force per 5 millimeters of width (hereinafter "kgf/5 mm-width") on tin plate or in excess of 4.0 kgf/5 mm-width on aluminum are generally regarded as excellent.
  • kgf/5 mm-width 1.5 kilograms of force per 5 millimeters of width
  • Tin-plated DI cans were prepared by drawing and iron ⁇ ing tin-plated steel sheet. They were cleaned with a 1% hot aqueous solution of a weakly alkaline degreaser (FINE CLEANER 4361A, registered brand name of Nihon Parkerizing Company, Limited) , then sprayed with a surface-treatment liquid composition according to the invention as described below for each specific example.
  • FINE CLEANER 4361A registered brand name of Nihon Parkerizing Company, Limited
  • Aluminum DI cans were prepared by drawing and ironing aluminum alloy (A3004) sheet. They were cleaned with a 3 % hot aqueous solution of an acidic degreaser (PARCLEANTM 400, commercially available from Nihon Parkerizing Company, Ltd.), then sprayed a with surface-treatment liquid compo ⁇ sition according to the invention as described below for each specific example.
  • PARCLEANTM 400 commercially available from Nihon Parkerizing Company, Ltd.
  • Example 1 A tin-plated DI can was cleaned as described above, then sprayed with surface-treatment liquid composition 1 as described below, heated to 60 ° C, for 30 seconds, then washed with tap water, sprayed with de-ionized water (with a specific resistance of at least 3,000,000 ohm*cm) for 10 seconds, and, finally, dried in a hot air-drying oven at 180 ° C for 3 minutes.
  • Water-soluble resin 1 was synthesized as follows. CELLOSOLVE solvent in an amount of 100 grams (hereinafter "g") was introduced into a 1,000 milliliter (“ L") reaction flask equipped with a condenser, nitrogen inlet tube, over- head stirrer, and thermometer, and 60 g of poly ⁇ 4-vinyl- phenol ⁇ with a molecular weight of 5,000 was added and dis ⁇ solved. Then 40 g of 2-methylaminoethanol and 100 g of de ⁇ ionized water were added, and this was reacted by heating to 50 ° C.
  • Example 2 Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 2, heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 3 heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 4 heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi- tions as in Example 1 and was then treated with a 30 sec ⁇ ond spray of surface-treatment liquid composition 5 heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 6 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 7 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi- tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 8 heated to
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 9 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Tin-plated DI can was cleaned using the same condi- tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 10 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Surface-treatment liquid composition 10 75% phosphoric acid (H 3 P0 ) : 10.0 g/L
  • Tin-plated DI can was cleaned using the same condi ⁇ tions as in Example 1 and was then treated with a 30 second spray of surface-treatment liquid composition 11 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Water-soluble resin 4 had the chemical formula:
  • n The average value of n was about 40.
  • SO_ liquid sulfur trioxide
  • An aluminum DI can was cleaned as described above, then sprayed with surface-treatment liquid composition 12 as described below, heated to 60 ° C, for 30 seconds, then washed with tap water, sprayed with de-ionized water (with a specific resistance of at least 3,000,000 ohm*cm) for 10 seconds, and, finally, dried in a hot air-drying oven at 180 ° C for 3 minutes.
  • Surface-treatment liquid composition 12
  • Example 9 An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 13, heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • An aluminum DI can was cleaned using the same condi- tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 14 heated to
  • An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 15 heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Example 12
  • An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 sec ⁇ ond spray of surface-treatment liquid composition 16 heated to 60 ° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Example 13 An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 17 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • An aluminum DI can was cleaned using the same condi- tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 18 heated to
  • Water soluble resin 3 was made in the same way as in Example 7.
  • An aluminum DI can was cleaned using the same condi- tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 19 heated to
  • An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 21 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example l.
  • Example 8 An aluminum DI can was cleaned using the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of surface-treatment liquid composition 22 heated to 60° C. This treatment was followed with a water wash and drying using the same conditions as in Example 1.
  • Water-soluble resin 4 was the same as for Comparison Example 4 above. Comparison Example 5
  • Example 8 An aluminum DI can was cleaned under the same condi ⁇ tions as in Example 8 and was then treated with a 30 second spray of a 2 % aqueous solution (heated to 50° C) of a com-bit .al non-chromate agent (PARCOAT_M K 3761, from Ni•hon Parkerizing Company, Ltd.). This treatment was followed by a water wash and drying under the same conditions as in Example 1.
  • PARCOAT_M K 3761 com-bit .al non-chromate agent
  • Treatment of tin-plated or aluminum DI cans using a surface-treatment liquid composition with the composition given above imparts an excellent corrosion resistance and painting or printing. In addition, it also produces a film which has the excellent slideability necessary for smooth conveyor transport of the can.
  • the condensed phosphate ions comprises at least one selection from pyrophosphate ions, tripoly- phosphate ions, and tetrapolyphosphate ions and when:
  • the treatment solution according to this invention is substantially free from chromium and fluoride and therefore has relatively low pollution potential.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Paints Or Removers (AREA)
  • Lubricants (AREA)
  • Laminated Bodies (AREA)
EP91912131A 1990-06-19 1991-06-13 Behandlungsverfahren von aluminium- oder blechdosen zur erhöhung der korrosionsbeständigkeit und zur verringerung des reibungskoeffizienten und zusammensetzung der behandlungsflüssigkeit Expired - Lifetime EP0533823B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP160443/90 1990-06-19
JP16044390A JPH0450272A (ja) 1990-06-19 1990-06-19 ぶりきｄｉ缶の表面処理液
JP179271/90 1990-07-06
JP17927190A JPH0466671A (ja) 1990-07-06 1990-07-06 アルミニウム及びアルミニウム合金用表面処理液
PCT/US1991/004250 WO1991019828A1 (en) 1990-06-19 1991-06-13 Liquid composition and process for treating aluminium or tin cans to impart corrosion resistance and reduced friction coefficient

Publications (2)

Publication Number Publication Date
EP0533823A1 true EP0533823A1 (de) 1993-03-31
EP0533823B1 EP0533823B1 (de) 1995-01-04

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EP91912131A Expired - Lifetime EP0533823B1 (de) 1990-06-19 1991-06-13 Behandlungsverfahren von aluminium- oder blechdosen zur erhöhung der korrosionsbeständigkeit und zur verringerung des reibungskoeffizienten und zusammensetzung der behandlungsflüssigkeit

Country Status (8)

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EP (1) EP0533823B1 (de)
AT (1) ATE116694T1 (de)
AU (1) AU647498B2 (de)
BR (1) BR9106572A (de)
CA (1) CA2085489C (de)
DE (1) DE69106510T2 (de)
ES (1) ES2067942T3 (de)
WO (1) WO1991019828A1 (de)

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JP3620893B2 (ja) * 1995-07-21 2005-02-16 日本パーカライジング株式会社 アルミニウム含有金属用表面処理組成物及び表面処理方法
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JP3544761B2 (ja) * 1995-10-13 2004-07-21 日本パーカライジング株式会社 アルミニウム含有金属材料用表面処理組成物および表面処理方法
GB9625652D0 (en) * 1996-12-11 1997-01-29 Novamax Technologies Limited The treatment of aluminium surfaces
AU4695799A (en) * 1998-06-19 2000-01-05 Alcoa Inc. Method for inhibiting stains on aluminum product surfaces
EP1221497A3 (de) * 1998-06-19 2003-12-03 Alcoa Inc. Verfahren zur Inhibierung von Flecken auf Aluminiumoberflächen

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Also Published As

Publication number Publication date
ES2067942T3 (es) 1995-04-01
AU8069391A (en) 1992-01-07
DE69106510T2 (de) 1995-08-03
DE69106510D1 (de) 1995-02-16
ATE116694T1 (de) 1995-01-15
BR9106572A (pt) 1993-06-01
EP0533823B1 (de) 1995-01-04
CA2085489C (en) 2000-12-12
CA2085489A1 (en) 1991-12-20
WO1991019828A1 (en) 1991-12-26
AU647498B2 (en) 1994-03-24

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