EP0261704B1 - Verfahren zum Erzeugen von Phosphatüberzügen auf Metalloberflächen - Google Patents
Verfahren zum Erzeugen von Phosphatüberzügen auf Metalloberflächen Download PDFInfo
- Publication number
- EP0261704B1 EP0261704B1 EP87201520A EP87201520A EP0261704B1 EP 0261704 B1 EP0261704 B1 EP 0261704B1 EP 87201520 A EP87201520 A EP 87201520A EP 87201520 A EP87201520 A EP 87201520A EP 0261704 B1 EP0261704 B1 EP 0261704B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- process according
- contacted
- phosphating solution
- fluoride
- aqueous phosphating
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims description 24
- 229910019142 PO4 Inorganic materials 0.000 title claims description 23
- 239000010452 phosphate Substances 0.000 title claims description 23
- 238000000576 coating method Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 title description 9
- 239000002184 metal Substances 0.000 title description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 18
- 239000011701 zinc Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- -1 fluoride ions Chemical class 0.000 claims description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- 150000002828 nitro derivatives Chemical class 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 claims description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 150000002978 peroxides Chemical class 0.000 claims description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 11
- 229910001335 Galvanized steel Inorganic materials 0.000 description 7
- 239000008397 galvanized steel Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000004070 electrodeposition Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- JCYPECIVGRXBMO-FOCLMDBBSA-N methyl yellow Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1 JCYPECIVGRXBMO-FOCLMDBBSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
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
- C23C22/34—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
-
- 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
- C23C22/73—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 characterised by the process
- C23C22/77—Controlling or regulating of the coating process
Definitions
- the invention relates to a method for producing phosphate coatings on surfaces which are formed from aluminum or its alloys and at least one of the materials steel or galvanized steel, in spraying or spray-dipping by means of phosphating solutions containing zinc, phosphate, fluoride ions and accelerators, and its use as Preparation of the surfaces for electrocoating.
- a normal zinc process is known from FR-A-2159181, in which metal surfaces from the group aluminum, iron, steel and zinc are brought into contact with phosphating solutions which contain zinc, phosphate, nitrate, nitrite and fluoride ions in such solutions
- Quantities and ratios include that the free acid is 0.2 to 5 points and the total acid is at least 4 points.
- the weight ratio of metal to phosphate should be set to at least 1: 1.
- the preferred concentrations are between 0.7 and 6 g / l for zinc, between 1.0 and 20 g / l for phosphate and between 1.5 and 10 g / l for nitrate.
- the object of the invention is to provide a method for producing phosphate coatings on surfaces which are formed from aluminum or its alloys and at least one of the materials steel or galvanized steel, which does not have the aforementioned disadvantages, in particular leads to uniform phosphate coatings and without effort is feasible with regard to the solution components and the procedure.
- the partial surface consisting of aluminum materials to be treated by the method according to the invention comprises the pure metal and its alloys. Pure aluminum, AIMg and AIMgSi kneading materials may be mentioned as examples. A detailed description of the aluminum materials can be found e.g. in the aluminum paperback, 14th edition, aluminum publishing house, Düsseldorf, 1983.
- the other partial area consists of steel and / or galvanized steel.
- steel is understood to mean low-alloy steel, as it is e.g. in the form of sheets for body construction.
- galvanized steel includes e.g. Galvanized and hot-dip galvanized and refers to zinc and zinc alloys, e.g. ZnNi, ZnFe, ZnAI.
- the method according to the invention is used in spraying and splash immersion.
- the spraying time must be at least as long as is necessary for an at least largely closed phosphate layer formation on the aluminum. This usually takes at least 60 seconds.
- the required fluoride concentration corresponds approximately to the proportion of dissociated fluoride (F-) present in the phosphating solution.
- F (el) value 80 to 220 mg / 1 at the usual bath pH values of the low-zinc phosphating baths, about 0.4 to 0.9 g / l NH 4 HF 2 or equivalent amounts of other simple must -Fluoride containing salts are added.
- the bath is preferably supplemented by adding enough simple fluoride-containing salt to the bath until the desired measured value of F (el) is reached. At least part of the fluoride is added as single fluoride.
- the phosphating solutions can also contain complex fluoride, e.g. of boron or silicon, contained in the amounts customary in phosphating technology. Any fluoride released by dissociation, which is also detected by the fluoride-sensitive electrode and is therefore contained in the setpoint to be set.
- complex fluoride e.g. of boron or silicon
- the low value in the brackets applies to low concentrations of P z 0 5 , the higher value for higher concentrations in the phosphating solution.
- the correction element K takes into account the influence of the measured fluoride activity (F (el)) on the optimal free acid content.
- F (el) is used in the dimension (mg / l).
- F (el) is used in the dimension (mg / l).
- 10 ml bath sample are diluted with approx. 100 ml deionized water and titrated with 0.1 N NaOH against the change from dimethyl yellow to a weak yellow color, which corresponds to a pH value of 4.25.
- FS is equal in number to the ml of sodium hydroxide solution used.
- the substances generally used in phosphating technology can be used as accelerators. It is particularly advantageous to bring the surface into contact with an aqueous phosphating solution, the accelerator being chlorate, bromate, nitrate, nitrite, peroxide and / or organic nitro compounds.
- the accelerator being chlorate, bromate, nitrate, nitrite, peroxide and / or organic nitro compounds.
- a particularly suitable organic nitro compound is meta-nitrobenzosulfonate. They are dosed in the usual quantities.
- the phosphating bath temperature is usually chosen between 40 and 60 ° C and the spraying time between 1 and 3 minutes.
- the phosphate layers produced by the process according to the invention have a weight per unit area of approximately 1 to 5 g / m 2 and can be used well in all areas in which phosphate coatings are used.
- a particularly advantageous application is the preparation of the metal surfaces for painting.
- the method can be used with particular advantage as preparation for the electrocoating process.
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3631759 | 1986-09-18 | ||
| DE19863631759 DE3631759A1 (de) | 1986-09-18 | 1986-09-18 | Verfahren zum erzeugen von phosphatueberzuegen auf metalloberflaechen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0261704A1 EP0261704A1 (de) | 1988-03-30 |
| EP0261704B1 true EP0261704B1 (de) | 1991-01-23 |
Family
ID=6309850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87201520A Expired - Lifetime EP0261704B1 (de) | 1986-09-18 | 1987-08-11 | Verfahren zum Erzeugen von Phosphatüberzügen auf Metalloberflächen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4849031A (es) |
| EP (1) | EP0261704B1 (es) |
| JP (1) | JP2604387B2 (es) |
| CA (1) | CA1308338C (es) |
| DE (2) | DE3631759A1 (es) |
| ES (1) | ES2020259B3 (es) |
| GB (1) | GB2195359B (es) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238506A (en) * | 1986-09-26 | 1993-08-24 | Chemfil Corporation | Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating |
| DE3918136A1 (de) * | 1989-06-03 | 1990-12-06 | Henkel Kgaa | Verfahren zur erzeugung von manganhaltigen phosphatueberzuegen auf metalloberflaechen |
| DE3920296A1 (de) * | 1989-06-21 | 1991-01-10 | Henkel Kgaa | Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatueberzuegen |
| US5372656A (en) * | 1989-08-17 | 1994-12-13 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing manganese-containing zinc phosphate coatings on galvanized steel |
| DE3927131A1 (de) * | 1989-08-17 | 1991-02-21 | Henkel Kgaa | Verfahren zur herstellung von manganhaltigen zinkphosphatschichten auf verzinktem stahl |
| KR100197145B1 (ko) * | 1989-12-19 | 1999-06-15 | 후지이 히로시 | 금속표면의 인산아연 처리방법 |
| JPH0525652A (ja) * | 1990-01-26 | 1993-02-02 | Ppg Ind Inc | リン酸塩被膜組成物および亜鉛・ニツケル・マンガンホスフエート塗料の適用方法 |
| JP2695963B2 (ja) * | 1990-03-16 | 1998-01-14 | マツダ株式会社 | 金属表面のリン酸塩処理方法 |
| DE4131382A1 (de) * | 1990-09-21 | 1992-03-26 | Kobe Steel Ltd | Oberflaechenbehandeltes aluminiumlegierungsblech fuer den automobilbau und verfahren zu dessen herstellung |
| JP2500010B2 (ja) * | 1990-09-21 | 1996-05-29 | 株式会社神戸製鋼所 | 自動車パネル用アルミニウム合金表面制御板の製造方法 |
| JP2794013B2 (ja) * | 1990-10-24 | 1998-09-03 | 日本パーカライジング株式会社 | 鉄―アルミニウム系金属板金構成体用リン酸塩化成処理液 |
| JPH04341574A (ja) * | 1991-05-18 | 1992-11-27 | Nippon Paint Co Ltd | 金属表面のリン酸亜鉛処理方法 |
| DE4238242C2 (de) * | 1992-09-17 | 2003-04-24 | Rieger Franz Metallveredelung | Verfahren zur Vorbehandlung von Leichtmetallen nach Patent DE 4231052 C2 |
| JPH07173643A (ja) * | 1993-12-21 | 1995-07-11 | Mazda Motor Corp | 金属表面の燐酸塩処理方法及び処理液 |
| JP3417653B2 (ja) * | 1994-05-11 | 2003-06-16 | 日本パーカライジング株式会社 | アルミニウム材の塗装前処理方法 |
| US5728235A (en) * | 1996-02-14 | 1998-03-17 | Henkel Corporation | Moderate temperature manganese phosphate conversion coating composition and process |
| DE10261014B4 (de) * | 2002-12-24 | 2005-09-08 | Chemetall Gmbh | Verfahren zur Beschichtung von Metalloberflächen mit einer Alkaliphosphatierungslösung, wässeriges Konzentrat und Verwendung der derart beschichteten Metalloberflächen |
| DE102010030697A1 (de) * | 2010-06-30 | 2012-01-05 | Henkel Ag & Co. Kgaa | Verfahren zur selektiven Phosphatierung einer Verbundmetallkonstruktion |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3619300A (en) * | 1968-11-13 | 1971-11-09 | Amchem Prod | Phosphate conversion coating of aluminum, zinc or iron |
| US3660172A (en) * | 1970-08-19 | 1972-05-02 | Amchem Prod | Prepaint treatment for zinciferous surfaces |
| US3681207A (en) * | 1970-12-28 | 1972-08-01 | Hooker Chemical Corp | Metal coating process |
| GB1297715A (es) * | 1971-02-02 | 1972-11-29 | ||
| GB1542222A (en) * | 1977-01-06 | 1979-03-14 | Pyrene Chemical Services Ltd | Phosphate coating compositions |
| JPS5811515B2 (ja) * | 1979-05-11 | 1983-03-03 | 日本ペイント株式会社 | 金属表面にリン酸亜鉛皮膜を形成するための組成物 |
| US4673444A (en) * | 1981-03-16 | 1987-06-16 | Koichi Saito | Process for phosphating metal surfaces |
| 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 |
| DE3413905A1 (de) * | 1984-04-13 | 1985-10-24 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur ueberwachung fluoridhaltiger baeder zur oberflaechenbehandlung von metallen |
| US4595424A (en) * | 1985-08-26 | 1986-06-17 | Parker Chemical Company | Method of forming phosphate coating on zinc |
-
1986
- 1986-09-18 DE DE19863631759 patent/DE3631759A1/de not_active Withdrawn
-
1987
- 1987-08-11 EP EP87201520A patent/EP0261704B1/de not_active Expired - Lifetime
- 1987-08-11 DE DE8787201520T patent/DE3767631D1/de not_active Expired - Lifetime
- 1987-08-11 ES ES87201520T patent/ES2020259B3/es not_active Expired - Lifetime
- 1987-08-19 CA CA000544881A patent/CA1308338C/en not_active Expired - Lifetime
- 1987-09-04 US US07/092,951 patent/US4849031A/en not_active Expired - Lifetime
- 1987-09-16 JP JP62229917A patent/JP2604387B2/ja not_active Expired - Lifetime
- 1987-09-18 GB GB8722064A patent/GB2195359B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA1308338C (en) | 1992-10-06 |
| GB2195359B (en) | 1990-06-27 |
| EP0261704A1 (de) | 1988-03-30 |
| JPS63157879A (ja) | 1988-06-30 |
| GB2195359A (en) | 1988-04-07 |
| GB8722064D0 (en) | 1987-10-28 |
| DE3631759A1 (de) | 1988-03-31 |
| JP2604387B2 (ja) | 1997-04-30 |
| ES2020259B3 (es) | 1991-08-01 |
| US4849031A (en) | 1989-07-18 |
| DE3767631D1 (de) | 1991-02-28 |
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