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WO1991010756A1 - Procede de traitement en surface pour boites etamees etirees et embouties - Google Patents

Procede de traitement en surface pour boites etamees etirees et embouties Download PDF

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Publication number
WO1991010756A1
WO1991010756A1 PCT/US1991/000202 US9100202W WO9110756A1 WO 1991010756 A1 WO1991010756 A1 WO 1991010756A1 US 9100202 W US9100202 W US 9100202W WO 9110756 A1 WO9110756 A1 WO 9110756A1
Authority
WO
WIPO (PCT)
Prior art keywords
oligomer
water
sprayed
seconds
cans
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.)
Ceased
Application number
PCT/US1991/000202
Other languages
English (en)
Inventor
Shigeo Tanaka
Tomoyuki Aoki
Masayuki Yoshida
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 to US07/910,081 priority Critical patent/US5520959A/en
Application filed by Henkel Corp filed Critical Henkel Corp
Priority to EP91903769A priority patent/EP0510105B1/fr
Priority to BR919105932A priority patent/BR9105932A/pt
Priority to DE69104825T priority patent/DE69104825T2/de
Publication of WO1991010756A1 publication Critical patent/WO1991010756A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C23C22/08—Orthophosphates
    • 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

Definitions

  • the present invention relates to a novel surface treatment method for tin plated DI cans, i.e., cans formed by the drawing and ironing of tin plated steel sheet.
  • the method imparts excellent corrosion resistance and paint ad- hesivity to the surface of the can prior to its being painted or printed, and also imparts the excellent slide- ability (low frictional resistance) that is required for smooth transport of the can by automatic conveying equip- ment, particularly modern high speed conveying equipment.
  • the invention of Japanese Patent Application Laid Open [Ko ai or Unexamined] Number 1-100281 [100,281/89] is an example of a surface treatment liquid for tin plated DI cans.
  • This teaching of the prior art employs a film form ⁇ ing liquid for the treatment of metal surfaces.
  • This solu ⁇ tion has a pH of 2 to 6 and contains 1 to 50 gram per liter ("g/L") of phosphate, 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.
  • Treatment with this conversion treatment solu ⁇ tion afforded a highly corrosion resistant phosphate film on the surface of tin-plated DI cans.
  • Treatment methods intended to provide corrosion re ⁇ sistance and adhesivity through the use of water soluble resin are exemplified by the invention in Japanese Patent Application Laid Open Number 1-172406 [172,406/89].
  • This invention provided as an example of the prior art comprises a method in which the metal surface is treated with a solu ⁇ tion which contains an effective derivative of a polyhydric phenol compound.
  • the disclosed method does not generate a satisfactorily stable corrosion resistance.
  • the metal can manufacturing process often suffers from a problem with transfer or transport: the slideability of the outer surface of the can during convey ⁇ or transport of the can may be poor due to a high friction coefficient of the outer surface, so that the can may be tipped over sideways.
  • the invention of Japanese Patent Application Laid Open Number 64-85292 [85,292/89] comprises a method for improving this slideability.
  • the reference teaches a surface treatment composition for metal cans which contains water-soluble organic material selected from phosphate esters, alcohols, monobasic, and polybasic fatty acids, fatty acid deriva ⁇ tives, and mixtures of the foregoing. While the disclosed method does in fact generate an increase in the slideabil- ity, it does not improve the corrosion resistance or paint adhesion.
  • the principal goal of the invention is to provide a single treatment for DI cans that will result in increased corrosion resistance, good adhesion to subsequently applied paint or similar organic coatings, and a low coefficient of friction on the outside can surface, for efficient process- ing in automated can processing lines using high speed con ⁇ veyors and printers.
  • a liquid treating composition is prepared by dissolv ⁇ ing in water an oligomer having a chemical composition specified by the general formula:
  • n is a number with a value between 10 and 30 and each of X and Y independently represents hydrogen or a group Z, wherein Z has a chemical composition conforming to the general formula:
  • each of R_ and is an alkyl or hydroxyalkyl group having from 1 to 5 carbon atoms, except that at least 25 % of the total of all the X and Y groups in the oligomer are Z rather than hydrogen.
  • the pH of the surface treatment solution containing the oligomer described in item (1) is adjusted to a value between 4 and 6 by the addition of orthophos- phoric acid and/or condensed phosphoric acid.
  • the surface treatment liquid as prepared in step (2) is heated to a temperature of at least 40 but prefer ⁇ ably to not more than 60 degrees Centigrade and the ably to not more than 60 degrees Centigrade and the heated surface treatment liquid is then sprayed on the cleaned surface of tin plated DI can for a time of at least 5 and preferably not more than 60 seconds.
  • the aforesaid spray treatment is followed by thermal drying or by a water rinse and then thermal drying.
  • the sprayed cans drain under the influence of gravity, and/or to remove some of the liquid from the can surface by mechanical means such as an air flow, rollers under slight pressure, or the like, to avoid the presence of excessive amounts of the surface treatment liquid on the surface during drying.
  • n in the general formula given above for the oligomer dissolved in the surface treatment liquid is 10 to 30. At values of n below 10, little or no improve ⁇ ment in corrosion resistance will be observed on DI tin plated cans. A value of 31 or more for n results in a poorly stable aqueous solution which cannot readily be used in practical applications.
  • R. and R repre ⁇ sent alkyl or hydroxyalkyl groups having 1 to 5 carbon atoms. When they contain six or more carbons, the stabil ⁇ ity of the aqueous solution is reduced.
  • the introduction ratio for the group Z should be 25 to 100 mole % referred to the total number of X and Y groups in the oligomer.
  • the water solubility of the oligomer may not be adequate when over 75 % of the total of X and Y groups present are hydro ⁇ gen.
  • the oligomer solids content in the treatment liquid preferably is from 0.1 to 0.5 % by weight ("w/o") of the total liquid. Below 0.1 w/o, it is very difficult to form a stable film on a DI tin can surface. On the other hand, the treatment solution is costly above 0.5 w/o, with little or no additional technical benefit.
  • the pH of the treatment solution should be adjusted to 4 to 6 through the use of orthophosphoric acid and/or a condensed phosphoric acid such as pyrophosphoric acid. Substantial etching of the can surface occurs at a pH below 4 and impairs film formation. At a pH above 6, the solu ⁇ tion has a short life because the oligomer tends to pre ⁇ cipitate and sediment.
  • the pH can normally be adjusted into the range of 4 to 6 by the addition of 0.05 to 0.3 w/o orthophosphoric acid or 0.03 to 0.2 w/o pyrophosphoric acid referred to the total surface treatment liquid.
  • Other con ⁇ densed phosphoric acids and mixtures of condensed acids or of condensed and orthophosphoric acids can also be used.
  • the treatment liquid should be heated to at least 40 degrees Centigrade during use.
  • the treatment liquid is poorly reactive below 40 degrees Centigrade, and this works against the formation of a highly corrosion re ⁇ sistant film.
  • little or no benefit due to heating is observed when the liquid is heated to above 60 degrees Centigrade, and unnecessary heating is expen- sive.
  • the spraying time should be at least 5 seconds. Only an inadequate reaction is obtained at less than 5 seconds, and a strongly corrosion resistant film is not developed. On the other hand, treatment times in excess of 60 seconds do not afford any increase in performance and increase the expense.
  • a small sprayer was used for the degreasing and sur ⁇ face treatment of the cans. This small sprayer was de- signed to give spray conditions identical to those encount ⁇ ered in spray treatment with the can washers which are cur ⁇ rently in use in the can manufacturing industry.
  • the corrosion resistance of a treated can was evaluat ⁇ ed through the iron exposure value ("IEV") , which was mea- sured according to the directions in United States Patent 4,332,646.
  • IEV iron exposure value
  • the paint adhesiveness was evaluated as follows: an epoxy-urea can paint was coated to a film thickness of 5 to 7 micrometers (microns) on the surface of the treated can, which was subsequently baked for 4 minutes at 215 degrees Centigrade; the can was then cut into a 5 x 150 millimeter (“mm") strip, onto which was hot-pressed polyamide film in order to afford a test specimen; and this was then peeled in a 180" peel test to give the peel strength. Higher peel strength values correspond to a better adhesiveness.
  • n had an average value of 20 and X represented hydrogen.
  • This oligomer was synthesized as follows: 100 grams ("g") of CellosolveTM solvent (the monoethyl ether of ethylene glycol) was introduced into a 1 liter reaction flask equipped with a condenser, nitrogen inlet tube, over- head stirrer, and thermometer, and 60 g of poly ⁇ 4-vinyl phenol ⁇ with an average molecular weight of 2,500 was added and dissolved; 40 grams of 2-methylamino ethanol and 100 g of deionized water were added, and the contents of the flask were heated to 50 degrees Centigrade; 40 g of 37% formaldehyde solution in water was added over 1 hour, fol ⁇ lowed by stirring at 50 degrees Centigrade for 2 hours and by further heating to 80 degrees Centigrade and stirring for an additional 3 hours at that temperature; the reaction product was cooled, 15 g of 85 % orthophosphoric acid was added, and 700 g of deionized water was also added
  • Tin plated steel sheet was drawn and ironed to afford tin plated DI cans, which were spray-rinsed with a hot 1% aqueous solution of a weakly alkaline degreaser (FINE CLEANERTM 4361A from Ninon Parkerizing Company, Limited, Tokyo) and then rinsed with water.
  • Cans were then sprayed for 40 seconds with surface treatment liquid 1 (described below) , heated to 50 degrees Centigrade, followed by a wash with tap water, then a 10 second spray with deionized water (with a specific resistance of at least 3,000,000 ohm*cm) , then drying for 3 minutes in a hot air dryer at 180 degrees Centigrade.
  • Surface-treatment liquid 1 had the following composition: oligomer solids 0.2 weight % 75% orthophosphoric acid 0.1 weight % water 99.7 weight % pH 5.5
  • Example 2 Example 2
  • Tin plated DI cans werer cleaned as in Example 1, then spray treated for 40 seconds with surface treatment liquid
  • Example 2 heated to 50 degrees Centigrade. This was followed by a water wash and drying as in Example 1.
  • the composition of surface treatment liquid 2 was: oligomer solids 0.2 weight %
  • the oligomer used was the same as in Example 1.
  • Tin plated DI cans were cleaned as in Example 1, then spray treated for 10 seconds with the above described surface treatment liquid 1 (cf. Example 1) , which had been heated to 50 degrees Centigrade. This was followed by a water wash and drying as in Example 1.
  • Tin plated DI can was cleaned as in Example 1, then spray treated for 40 seconds with the above described sur ⁇ face treatment liquid 1 (cf. Example 1) , which had been heated to 50 degrees Centigrade. This was followed by draining, without water rinsing, and then drying in a hot air dryer at 180 degrees Centigrade for 3 minutes.
  • Tin plated DI cans were cleaned as in Example 1, spray treated for 40 seconds with comparison surface treat ⁇ ment liquid 1, heated to 50 degrees Centigrade, then washed with water and dried as in Example 1.
  • Comparison surface treatment liquid 1 had the following composition: oligomer solids 0.2 weight % 75% orthophosphoric acid 1.5 weight % water 98.3 weight % pH 2.0 The oligomer used was the same as in Example 1.
  • Comparison Example 2
  • Tin plated DI cans were cleaned as in Example 1, spray treated for 2 seconds with the above described sur ⁇ face treatment liquid 1 (cf. Example 1) , which had been heated to 50 degrees Centigrade, then washed with water and dried as in Example 1.
  • sur ⁇ face treatment liquid 1 cf. Example 1
  • Tin plated DI cans were cleaned as in Example 1, then spray treated for 40 seconds with the Comparison surface treatment liquid 2, heated to 50 degrees Centigrade, then washed with water and dried as in Example 1.
  • the composi ⁇ tion of Comparison surface treatment liquid 2 was: oligomer solids 0.2 weight %
  • the oligomer used for Comparison surface treatment liquid 2 was not the same as that used for the Examples and the preceding Comparison examples, but instead had the ap- proximate formula:
  • n has an average value of 20 and X represents hydrogen.
  • S0_ liquid sulfur trioxide

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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)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

On peut obtenir une surface avec une bonne adhésion à la peinture, une bonne résistance à la corrosion et une faible friction sur des boîtes étamées, embouties et étirées en appliquant par pulvérisation sur la surface de la boîte, pendant 5 à 60 secondes, à une température entre et 40 et 60 °C, un liquide aqueux de traitement ayant un pH compris entre 4 et 6 et comprenant (i) de l'acide orthophosphorique et/ou des acides phosphoriques condensés et (ii) une concentration d'au moins 0,1 w/o d'un oligomère soluble dans l'eau de formule générale (I) dans laquelle n est un nombre ayant une valeur comprise entre 10 et 30 et X et Y représentent indépendamment l'hydrogène ou un groupe Z, Z ayant une composition chimique de formule (II) dans laquelle chacun des R1 et R2 est un groupe alkyle ou hydroxyalkyle de 1 à 5 atomes de carbone, sauf qu'au moins 25 % du total de tous les groupes X et Y dans l'oligomère sont Z plutôt que l'hydrogène; puis en séchant la surface, éventuellement après avoir rincé à l'eau au préalable la surface revêtue par pulvérisation.
PCT/US1991/000202 1990-01-10 1991-01-10 Procede de traitement en surface pour boites etamees etirees et embouties Ceased WO1991010756A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US07/910,081 US5520959A (en) 1990-01-10 1991-01-01 Surface-treatment method for tin-plated drawn and ironed cans
EP91903769A EP0510105B1 (fr) 1990-01-10 1991-01-10 Procede de traitement en surface pour boites etamees etirees et embouties
BR919105932A BR9105932A (pt) 1990-01-10 1991-01-10 Processo para o tratamento de pelo menos a superficie externa de uma lata estanhada
DE69104825T DE69104825T2 (de) 1990-01-10 1991-01-10 Oberflächenbehandlung von verzinnten glatt- und tiefgezogenen dosen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP320090A JPH03207766A (ja) 1990-01-10 1990-01-10 ぶりきｄｉ缶の表面処理方法
JP2/3200 1990-01-10

Publications (1)

Publication Number Publication Date
WO1991010756A1 true WO1991010756A1 (fr) 1991-07-25

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PCT/US1991/000202 Ceased WO1991010756A1 (fr) 1990-01-10 1991-01-10 Procede de traitement en surface pour boites etamees etirees et embouties

Country Status (8)

Country Link
EP (1) EP0510105B1 (fr)
JP (1) JPH03207766A (fr)
AU (1) AU642468B2 (fr)
BR (1) BR9105932A (fr)
CA (1) CA2072258A1 (fr)
DE (1) DE69104825T2 (fr)
ES (1) ES2063494T3 (fr)
WO (1) WO1991010756A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009720A1 (fr) * 1990-11-21 1992-06-11 Henkel Corporation Composition et procede pour le traitement de surfaces
EP0757725A4 (fr) * 1994-04-15 1997-07-30 Henkel Corp Composition et procede pour traiter la surface de metaux alumineux
EP0838537A4 (fr) * 1995-07-10 1998-10-07 Nippon Paint Co Ltd Traitements de surface de metaux, procede de traitement de surface de metaux et materiau metallique ayant subi un traitement de surface
EP0859871A4 (fr) * 1995-10-13 2001-04-18 Henkel Corp Composition et procede de traitement de surface de l'aluminium et de ses alliages

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2067942T3 (es) * 1990-06-19 1995-04-01 Henkel Corp Composicion liquida y procedimiento para tratar botes de aluminio o estaño con objeto de impartir resistencia a la corrosion y coeficiente de friccion reducido.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2112409A (en) * 1981-12-22 1983-07-20 Pyrene Chemical Services Ltd Phenolic compounds and their use in metal finishing processes
EP0091166A1 (fr) * 1982-04-07 1983-10-12 Metallgesellschaft Ag Procédé pour traiter de surfaces métalliques
US4457790A (en) * 1983-05-09 1984-07-03 Parker Chemical Company Treatment of metal with group IV B metal ion and derivative of polyalkenylphenol
FR2552112A1 (fr) * 1983-08-29 1985-03-22 Elso Vegyi Ind Szovetkezet Inhibiteur protegeant le fer, convertissant la rouille et empechant la corrosion, et un procede pour sa preparation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2112409A (en) * 1981-12-22 1983-07-20 Pyrene Chemical Services Ltd Phenolic compounds and their use in metal finishing processes
EP0091166A1 (fr) * 1982-04-07 1983-10-12 Metallgesellschaft Ag Procédé pour traiter de surfaces métalliques
US4457790A (en) * 1983-05-09 1984-07-03 Parker Chemical Company Treatment of metal with group IV B metal ion and derivative of polyalkenylphenol
FR2552112A1 (fr) * 1983-08-29 1985-03-22 Elso Vegyi Ind Szovetkezet Inhibiteur protegeant le fer, convertissant la rouille et empechant la corrosion, et un procede pour sa preparation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009720A1 (fr) * 1990-11-21 1992-06-11 Henkel Corporation Composition et procede pour le traitement de surfaces
AU653566B2 (en) * 1990-11-21 1994-10-06 Henkel Corporation Composition and method for treating tin plated steel surface
US5356491A (en) * 1990-11-21 1994-10-18 Henkel Corporation Composition and method for treating tin plated steel surface
EP0757725A4 (fr) * 1994-04-15 1997-07-30 Henkel Corp Composition et procede pour traiter la surface de metaux alumineux
EP0838537A4 (fr) * 1995-07-10 1998-10-07 Nippon Paint Co Ltd Traitements de surface de metaux, procede de traitement de surface de metaux et materiau metallique ayant subi un traitement de surface
EP0859871A4 (fr) * 1995-10-13 2001-04-18 Henkel Corp Composition et procede de traitement de surface de l'aluminium et de ses alliages

Also Published As

Publication number Publication date
DE69104825D1 (de) 1994-12-01
AU642468B2 (en) 1993-10-21
EP0510105A1 (fr) 1992-10-28
AU7224391A (en) 1991-08-05
EP0510105B1 (fr) 1994-10-26
BR9105932A (pt) 1992-11-24
DE69104825T2 (de) 1995-05-24
ES2063494T3 (es) 1995-01-01
JPH03207766A (ja) 1991-09-11
CA2072258A1 (fr) 1991-07-11

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