EP0154367B1 - Procédé de phosphatation de métaux - Google Patents

Procédé de phosphatation de métaux Download PDF

Info

Publication number
EP0154367B1
EP0154367B1 EP85200192A EP85200192A EP0154367B1 EP 0154367 B1 EP0154367 B1 EP 0154367B1 EP 85200192 A EP85200192 A EP 85200192A EP 85200192 A EP85200192 A EP 85200192A EP 0154367 B1 EP0154367 B1 EP 0154367B1
Authority
EP
European Patent Office
Prior art keywords
phosphating
metal surfaces
steel
phosphatizing
phosphate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85200192A
Other languages
German (de)
English (en)
Other versions
EP0154367A2 (fr
EP0154367A3 (en
Inventor
Gerhard Müller
Werner Dr. Rausch
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.)
GEA Group AG
Continentale Parker Ste
Continentale Parker SA
Original Assignee
Metallgesellschaft AG
Continentale Parker Ste
Continentale Parker SA
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 Metallgesellschaft AG, Continentale Parker Ste, Continentale Parker SA filed Critical Metallgesellschaft AG
Priority to AT85200192T priority Critical patent/ATE37203T1/de
Publication of EP0154367A2 publication Critical patent/EP0154367A2/fr
Publication of EP0154367A3 publication Critical patent/EP0154367A3/de
Application granted granted Critical
Publication of EP0154367B1 publication Critical patent/EP0154367B1/fr
Expired 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
    • C23C22/23—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
    • C23C22/06—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
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/17—Orthophosphates containing zinc cations containing also organic acids
    • 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
    • C23C22/34—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 fluorides or complex fluorides
    • C23C22/36—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 fluorides or complex fluorides containing also phosphates
    • C23C22/362—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 fluorides or complex fluorides containing also phosphates containing also zinc cations

Definitions

  • the invention relates to a method for phosphating metals, in particular steel and galvanized steel, by spraying using an aqueous, acid accelerator, zinc and optionally nickel-containing phosphating solution and its use before electrocoating.
  • the reduced zinc content compared to the usual phosphating baths leads to improved thin and uniform phosphate coatings, which are very adhesive and durable and are particularly suitable as a basis for the subsequent electrocoating.
  • PCT publication WO 84/00386 discloses phosphating solutions with 0.2 to 0.6 g / l of Zn and Ni in a ratio of 5.2 to 16 mol of Ni to 1 mol of Zn, the phosphate layers having a particularly high resistance to Have resolution in alkali.
  • the Japanese patent publication (according to Chemical Abstracts 99/216843 u) 58 144 477 describes spray phosphating solutions for steel with a content of 0.1 to 0.5 g / l Zn, 15 to 30 g / l phosphate and 0.01 to 0.2 g / l nitrite.
  • the phosphate layers produced in this way are particularly suitable as pretreatment for a subsequent cathodic electrocoating.
  • a disadvantage of the known processes with zinc concentrations in the phosphating bath of 0.1 to 0.6 g / l is that when used in spraying on steel they often lead to uneven phosphate layers with partly gray, partly greenish-bluish iridescent color. These irregularities can mark themselves in the subsequently applied electro-dip lacquer and cause expensive rework. Furthermore, paint adhesion is sufficient when subjected to e.g. Bending or prolonged contact with water does not always meet the requirements.
  • the object of the invention is to provide a process which does not have the disadvantages of the known processes and which forms uniform, uniform phosphate layers with improved paint adhesion.
  • the object is achieved by designing the method of the type mentioned at the outset in accordance with the invention in such a way that the metal surfaces are brought into contact with an aqueous acidic phosphating solution which and contains at least one activator from the group formate, nitrilotriacetate, trichloroacetate and ethylenediaminetetraacetate.
  • the method according to the invention is intended in particular for the treatment of iron, steel and galvanized steel. However, it is also suitable for the phosphating of zinc alloys, aluminum and aluminum alloys.
  • the treatment is carried out by spraying, the contact times for iron, steel and aluminum being 90 to 240 seconds, for example, and zinc 5 to 240 seconds.
  • the method according to the invention is mostly used at bath temperatures between 30 and 60 ° C.
  • the addition of nickel to the phosphating bath generally has a favorable effect on the phosphating speed, the formation of layers on steel surfaces that are difficult to phosphate, on the phosphating of zinc surfaces and on the corrosion protection properties.
  • the phosphating solutions to be used in the process according to the invention preferably contain alkali ions, e.g. B. Na, K, Li, NH 4 , and if necessary further anions, for. B. NO 3 , CI, S0 4 .
  • the baths can furthermore contain cations known in phosphating technology, such as Co, Cu, Mn, Ca, Mg and Fe.
  • nitrite and / or nitrobenzenesulfonate are used as oxidation accelerators.
  • further oxidation accelerators e.g. Clorat is possible and can be beneficial.
  • An advantageous embodiment of the method according to the invention is to bring the metal surface into contact with a phosphating solution which contains at least one further activator from the group consisting of fluoride, hexafluorosilicate, tetrafluoroborate, glycolate, citrate, tartrate and condensed phosphate.
  • the activators to be used in the method according to the invention have an accelerating and comparative effect on the layer formation and control the weight per unit area of the phosphate layers.
  • the addition can e.g. over the corresponding acids or alkali salts.
  • concentrations in the phosphating solution apply to the activators: 0.5 to 3 g / l fluoride; 1 to 5 g / l hexafluorosilicate; 3 to 10 g / l tetrafluoroborate; 5 to 15 g / l formate; 0.3 to 5 g / l glycolate; 0.3 to 3 g / l nitrilotriacetate; 2 to 15 g / l trichloroacetate; 0.1 to 3 g / l of ethylenediaminetetraacetate; 0.01 to 0.5 g / l citrate; 0.03 to 0.8 g / l tartrate; 0.03 to 0.3 g / l of conden
  • the weight per unit area of the phosphate layers produced on steel using the method according to the invention is usually between 0.8 and 2.5 g / m 2 .
  • activating agents e.g. B. on titanium phosphate basis, in the pre-rinse bath or the last cleaning stage.
  • the phosphate layers produced with the method according to the invention are suitable in principle for all purposes for which phosphate layers are suitable.
  • the layers bring about an unusually strong improvement in the resistance of the paint film against paint infiltration under corrosive stress as well as a significant increase in paint adhesion to the metallic surface under scratch, impact, and bending stress.
  • electrocoating in particular in cathodic electrocoating, which is why the method is preferably used as a preparation for this type of painting.
  • the method according to the invention finds practical application, for. B. for the phosphating of car bodies.
  • Body steel sheets degreased with mildly alkaline, activating cleaner and then rinsed with water were sprayed with the following phosphating solutions for two minutes at 55 ° C, then rinsed with water, passively rinsed with dilute Cr (VI) / Cr (III) solution, rinsed with demineralized water and partly dried and partly cathodically electro-coated.
  • the phosphating solutions according to 1 to 7 contained identical as well as the zinc contents indicated in the table.
  • the phosphating solutions according to 8 to 11 contained as well as the activator levels listed in the table.
  • the phosphating solutions mentioned were adjusted to the phosphating equilibrium with alkali.
  • Examples 8 and 11 clearly show the layer evaluation of the advantages of the procedure according to the invention in comparison to examples 1 to 6 according to the prior art. Due to the different chemical surface activity of steel sheets from different rolled batches, the absolute value of the visual assessment is subject to certain fluctuations, but without significantly influencing the relative differences.
  • the steel sheets phosphated according to Examples 1 to 6 led to a paint film with an uneven surface structure, while uniform paint films had to be deposited on the steel sheets phosphated according to Examples 7 to 11.
  • cathodically coated metal sheets were provided with a total of about 100 11m automotive paint and tested using various methods.
  • the results of the sheets treated according to the invention with regard to VW stone chips with a salt spray test, cross-cut after exposure to condensation and bending over the conical mandrel are very good and behave significantly better than Examples 4 and 7 of the prior art.

Landscapes

  • 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)
  • Electrolytic Production Of Metals (AREA)
  • Catalysts (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Paints Or Removers (AREA)
  • Glass Compositions (AREA)
  • Materials For Medical Uses (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Secondary Cells (AREA)

Claims (4)

1. Procédé pour la phosphatation de métaux, en particulier d'acier et acier galvanisé, dans le procédé par pistolage, au moyen d'une solution aqueuse acide de phosphatation contenant un accélérateur, du zinc et éventuellement du nickel, caractérisé en ce que l'on met la surface métallique en contact avec une solution de phosphatation qui contient
Figure imgb0009
et au moins un activateur choisi parmi un formiate, un nitrilotriacétate, un trichloracétate et un éthylène- diaminetétraacétate.
2. Procédé selon la revendication 1, caractérisé en ce que l'on met surface métallique en contact avec une solution de phosphatation qui contient au moins un autre activateur, choisi parmi un fluorure, un hexafluorosilicate, un tétrafluoroborate, un glycolate, un citrate, un tartrate et un phosphate condensé.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on met la surface métallique en contact avec une solution de phosphatation qui contient l'activateur en une quantité de
Figure imgb0010
Figure imgb0011
4. Application du procédé selon une ou plusieurs des revendications 1 à 3, à la préparation de surfaces métalliques pour la peinture par électrodéposition, en particulier la peinture par électrodéposition cathodique.
EP85200192A 1984-03-09 1985-02-15 Procédé de phosphatation de métaux Expired EP0154367B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200192T ATE37203T1 (de) 1984-03-09 1985-02-15 Verfahren zur phosphatierung von metallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3408577 1984-03-09
DE19843408577 DE3408577A1 (de) 1984-03-09 1984-03-09 Verfahren zur phosphatierung von metallen

Publications (3)

Publication Number Publication Date
EP0154367A2 EP0154367A2 (fr) 1985-09-11
EP0154367A3 EP0154367A3 (en) 1986-08-20
EP0154367B1 true EP0154367B1 (fr) 1988-09-14

Family

ID=6229954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200192A Expired EP0154367B1 (fr) 1984-03-09 1985-02-15 Procédé de phosphatation de métaux

Country Status (10)

Country Link
US (1) US4637838A (fr)
EP (1) EP0154367B1 (fr)
CN (1) CN85101297A (fr)
AT (1) ATE37203T1 (fr)
AU (1) AU575380B2 (fr)
CA (1) CA1224121A (fr)
DE (2) DE3408577A1 (fr)
ES (1) ES8602152A1 (fr)
GB (1) GB2155960A (fr)
ZA (1) ZA851761B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8527833D0 (en) * 1985-11-12 1985-12-18 Pyrene Chemicals Services Ltd Phosphate coating of metals
DE3630246A1 (de) * 1986-09-05 1988-03-10 Metallgesellschaft Ag Verfahren zur erzeugung von phosphatueberzuegen sowie dessen anwendung
EP0304108B1 (fr) * 1987-08-19 1992-05-13 Metallgesellschaft Ag Procédé de phosphatation de métaux
JPH01100281A (ja) * 1987-10-13 1989-04-18 Nippon Parkerizing Co Ltd 金属表面の皮膜化成処理液
JPH0730455B2 (ja) * 1988-09-27 1995-04-05 日本パーカライジング株式会社 リン酸塩化成処理液
JP2781844B2 (ja) * 1988-10-20 1998-07-30 日本ペイント株式会社 塗装用下地処理剤
JP2636919B2 (ja) * 1989-01-26 1997-08-06 日本パーカライジング株式会社 鉄鋼の冷間塑性加工用潤滑処理方法
DE3916498A1 (de) * 1989-05-20 1990-11-22 Kolbenschmidt Ag Verfahren zum aufbringen einer phosphat-laufschicht auf eine lagermetallschicht
DE4409306A1 (de) * 1994-03-18 1995-09-21 Basf Ag Verfahren zur Modifizierung von Metalloberflächen
DE4417965A1 (de) * 1994-05-21 1995-11-23 Henkel Kgaa Eisenphosphatierung unter Verwendung von substituierten Monocarbonsäuren
US6716192B1 (en) * 1997-09-30 2004-04-06 Charles F. Schroeder Medical needle having a visibly marked tip
US6551417B1 (en) 2000-09-20 2003-04-22 Ge Betz, Inc. Tri-cation zinc phosphate conversion coating and process of making the same
DE102005047424A1 (de) * 2005-09-30 2007-04-05 Henkel Kgaa Phosphatierlösung mit Wasserstoffperoxid und chelatbildenden Carbonsäuren
CN102839374A (zh) * 2012-09-05 2012-12-26 业纮企业股份有限公司 球阀用碳钢球体表面处理方法
CN103695881B (zh) * 2013-12-19 2016-08-24 湖南金裕化工有限公司 常温无渣快速磷化液及其制备方法
CN103668149B (zh) * 2013-12-19 2016-08-24 湖南金裕化工有限公司 常温快速磷化液及其制备方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL91161C (fr) * 1952-08-28
US2884351A (en) * 1956-01-25 1959-04-28 Parker Rust Proof Co Method of cold rolling ferrous strip stock
GB865497A (en) * 1958-10-03 1961-04-19 Pyrene Co Ltd Improvements relating to the cleaning and phosphate coating of metallic surfaces
GB1414484A (en) * 1972-05-03 1975-11-19 Pyrene Chemical Services Ltd Treatment of zinc surfaces
SU800240A1 (ru) * 1977-03-05 1981-01-30 Научно-Исследовательский Институтхимии Саратовского Государственногоордена Трудового Красного Знамениуниверситета Им.H.Г.Чернышевского Раствор дл фосфатировани кадми
GB1591039A (en) * 1977-05-03 1981-06-10 Pyrene Chemical Services Ltd Processes and compositions for coating metal surfaces
JPS5811513B2 (ja) * 1979-02-13 1983-03-03 日本ペイント株式会社 金属表面の保護方法
DE2907094A1 (de) * 1979-02-23 1980-09-04 Metallgesellschaft Ag Phosphatierungsloesungen
GB2072225B (en) * 1980-03-21 1983-11-02 Pyrene Chemical Services Ltd Process and composition for coating metal surfaces
DE3016576A1 (de) * 1980-04-30 1981-11-05 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur phosphatierung von metalloberflaechen sowie dessen anwendung
DE3118375A1 (de) * 1981-05-09 1982-11-25 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur phosphatierung von metallen sowie dessen anwendung zur vorbehandlung fuer die elektrotauchlackierung
US4498935A (en) * 1981-07-13 1985-02-12 Parker Chemical Company Zinc phosphate conversion coating composition
US4486241A (en) * 1981-09-17 1984-12-04 Amchem Products, Inc. Composition and process for treating steel
JPS58144477A (ja) * 1982-02-20 1983-08-27 Nippon Paint Co Ltd 金属表面のリン酸塩処理法
DE3311738A1 (de) * 1983-03-31 1984-10-04 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur phosphatierung von metalloberflaechen

Also Published As

Publication number Publication date
ES541015A0 (es) 1985-12-01
CN85101297A (zh) 1987-01-24
GB2155960A (en) 1985-10-02
AU575380B2 (en) 1988-07-28
AU3957485A (en) 1985-09-12
CA1224121A (fr) 1987-07-14
ZA851761B (en) 1985-11-27
ES8602152A1 (es) 1985-12-01
EP0154367A2 (fr) 1985-09-11
DE3408577A1 (de) 1985-09-12
US4637838A (en) 1987-01-20
GB8506049D0 (en) 1985-04-11
DE3564967D1 (en) 1988-10-20
EP0154367A3 (en) 1986-08-20
ATE37203T1 (de) 1988-09-15

Similar Documents

Publication Publication Date Title
DE3118375C2 (fr)
DE69737195T2 (de) Lösung und Verfahren zur Herstellung von Schutzschichten auf Metallen
EP0154367B1 (fr) Procédé de phosphatation de métaux
EP0056881B1 (fr) Procédé pour la phosphatation de métaux
EP0796356B1 (fr) Procede d'application de revetements de phosphate sur des surfaces metalliques
EP1200641A1 (fr) Traitement prealable de surfaces d'aluminium a l'aide de solutions exemptes de chrome
EP0015021B1 (fr) Procédé de préparation de surfaces métalliques avant dépôt de primaire par immersion électrophorétique
EP0578670B1 (fr) Procede de phosphatation de surfaces metalliques
DE1955002C3 (de) Verfahren zur Aufbringung von Zinkphosphatumwandlungsüberzügen auf Metalloberflächen
EP0261704A1 (fr) Procédé pour produire des revêtements de phosphate sur des surfaces métalliques
DE3932006A1 (de) Verfahren zum aufbringen von phosphatueberzuegen
EP0410497B1 (fr) Procédé pour le rinçage passif de couches de phosphates
DE2232067C3 (de) Verfahren zur Vorbereitung von Metalloberflächen für die elektrophoretische Tauchlackierung
DE2406411A1 (de) Verfahren zur erhoehung der korrosionsbestaendigkeit von metallen
EP0359296A1 (fr) Procédé de phosphatation
DE3245411C2 (fr)
EP0039093B1 (fr) Procédé de phosphatation des surfaces de métaux et application de ce procédé
EP0662164B1 (fr) Procede de phosphatation de surfaces en acier galvanisees
DE3226239A1 (de) Doppelschichtiges elektroplattiertes stahlblech mit korrosionswiderstand nach dem anstreichen und einem guten nasshaftvermoegen des anstrichfilms
DE3734596A1 (de) Verfahren zum erzeugen von phosphatueberzuegen
EP0096753B1 (fr) Procédé pour la production sans courant de couches anticorrosives sur des éléments de construction d'aluminium
EP0127204B1 (fr) Procédé de phosphatation de métaux composites
EP0477204A1 (fr) Procede pour appliquer sur des surfaces metalliques des couches de phosphate insoluble contenant du manganese
DE1521879B2 (de) Verfahren zum Aufbringen von Phosphatüberzügen auf Eisen und Stahl
WO2024120826A1 (fr) Procédé de dépôt électrolytique d'une couche de phosphate sur des surfaces de zinc

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR IT LI NL SE

17P Request for examination filed

Effective date: 19861008

17Q First examination report despatched

Effective date: 19871030

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR IT LI NL SE

REF Corresponds to:

Ref document number: 37203

Country of ref document: AT

Date of ref document: 19880915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3564967

Country of ref document: DE

Date of ref document: 19881020

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890228

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900901

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910313

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19911213

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19911217

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920115

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920226

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920323

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19930215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930228

Ref country code: CH

Effective date: 19930228

Ref country code: BE

Effective date: 19930228

BERE Be: lapsed

Owner name: SOC. CONTINENTALE PARKER

Effective date: 19930228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19931029

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 85200192.4

Effective date: 19930912