DE1297952C2 - Verfahren zur Chromatierung von Zink- oder Aluminiumoberflaechen - Google Patents
Verfahren zur Chromatierung von Zink- oder AluminiumoberflaechenInfo
- Publication number
- DE1297952C2 DE1297952C2 DE1965M0066589 DEM0066589A DE1297952C2 DE 1297952 C2 DE1297952 C2 DE 1297952C2 DE 1965M0066589 DE1965M0066589 DE 1965M0066589 DE M0066589 A DEM0066589 A DE M0066589A DE 1297952 C2 DE1297952 C2 DE 1297952C2
- Authority
- DE
- Germany
- Prior art keywords
- solution
- zinc
- chromating
- chromium
- cro
- 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
Links
- 239000011701 zinc Substances 0.000 title claims description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 16
- 229910052725 zinc Inorganic materials 0.000 title claims description 16
- 238000004532 chromating Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 15
- 229910052782 aluminium Inorganic materials 0.000 title claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 8
- 239000000243 solution Substances 0.000 claims description 48
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 13
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 12
- 239000003973 paint Substances 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 239000012670 alkaline solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 150000002222 fluorine compounds Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 nitrate ions Chemical class 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 150000003751 zinc Chemical class 0.000 description 2
- KHADWTWCQJVOQO-UHFFFAOYSA-N zinc;oxido-(oxido(dioxo)chromio)oxy-dioxochromium Chemical compound [Zn+2].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KHADWTWCQJVOQO-UHFFFAOYSA-N 0.000 description 2
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 description 1
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001131651 Leptosomus discolor Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 229910052936 alkali metal sulfate Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007739 conversion coating Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- XKYIQGHWOQHYGP-UHFFFAOYSA-N disodium;dihydroxy(dioxido)silane Chemical compound [Na+].[Na+].O[Si](O)([O-])[O-] XKYIQGHWOQHYGP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- APVPOHHVBBYQAV-UHFFFAOYSA-N n-(4-aminophenyl)sulfonyloctadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NS(=O)(=O)C1=CC=C(N)C=C1 APVPOHHVBBYQAV-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000012487 rinsing solution Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 1
- 235000019798 tripotassium phosphate Nutrition 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 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
- C23C22/37—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 hexavalent chromium compounds
-
- 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
- C23C22/78—Pretreatment of the material to be coated
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US399365A US3404046A (en) | 1964-09-25 | 1964-09-25 | Chromating of zinc and aluminum and composition therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1297952B DE1297952B (de) | 1969-06-19 |
| DE1297952C2 true DE1297952C2 (de) | 1973-05-24 |
Family
ID=23579241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1965M0066589 Expired DE1297952C2 (de) | 1964-09-25 | 1965-09-10 | Verfahren zur Chromatierung von Zink- oder Aluminiumoberflaechen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3404046A (cg-RX-API-DMAC7.html) |
| JP (1) | JPS4939385B1 (cg-RX-API-DMAC7.html) |
| BE (1) | BE668966A (cg-RX-API-DMAC7.html) |
| DE (1) | DE1297952C2 (cg-RX-API-DMAC7.html) |
| SE (1) | SE329070B (cg-RX-API-DMAC7.html) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3895969A (en) * | 1971-04-26 | 1975-07-22 | J M Eltzroth And Associates In | Composition and process for inhibiting corrosion of non-ferrous metal surfaced articles and providing surface for synthetic resin coating compositions |
| US3755018A (en) * | 1971-04-26 | 1973-08-28 | Eltzroth & Ass J M | Composition and process for inhibiting corrosion of non-ferrous metal surfaced articles and providing receptive surface for synthetic resin coating compositions |
| SU427614A1 (ru) * | 1971-10-05 | 1977-11-05 | Ордена Трудового Красного Знамени Институт Химии И Химической Технологии Ан Литовской Сср | Состав дл пассисировани цинка |
| JPS51112481U (cg-RX-API-DMAC7.html) * | 1975-03-07 | 1976-09-11 | ||
| JPS51153926U (cg-RX-API-DMAC7.html) * | 1975-05-31 | 1976-12-08 | ||
| JPS51156781U (cg-RX-API-DMAC7.html) * | 1975-06-07 | 1976-12-14 | ||
| US4266988A (en) * | 1980-03-25 | 1981-05-12 | J. M. Eltzroth & Associates, Inc. | Composition and process for inhibiting corrosion of ferrous or non-ferrous metal surfaced articles and providing receptive surface for synthetic resin coating compositions |
| GB8608508D0 (en) * | 1986-04-08 | 1986-05-14 | Pyrene Chemical Services Ltd | Coating metal surfaces |
| EP0310103A1 (en) * | 1987-10-01 | 1989-04-05 | HENKEL CORPORATION (a Delaware corp.) | Pretreatment process for aluminium |
| EP0487200B1 (en) * | 1990-11-14 | 2000-06-21 | Titeflex Corporation | Fluoropolymer aluminium laminate |
| JP2009515796A (ja) * | 2005-11-14 | 2009-04-16 | オーチス エレベータ カンパニー | 引張り部材上に化成コーティングを有するエレベータ荷重支持部材 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2137988A (en) * | 1936-10-21 | 1938-11-22 | Heresite & Chemical Company | Adherent aluminum compound |
| FR1105145A (fr) * | 1953-08-04 | 1955-11-28 | American Chem Paint Co | Procédé pour améliorer la résistance à la corrosion de couches protectrices contre la corrosion appliquées sur l'aluminium et ses alliages |
| US2970935A (en) * | 1959-03-02 | 1961-02-07 | Parker Rust Proof Co | Method of rinsing metallic surfaces with solutions containing hexavalent chromium |
| US3026220A (en) * | 1959-12-01 | 1962-03-20 | Du Pont | Aluminum pigments and fibers |
| GB988985A (en) * | 1962-10-15 | 1965-04-14 | Pyrene Co Ltd | Improvements relating to the treatment of conversion coatings on metal surfaces |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1946152A (en) * | 1931-06-20 | 1934-02-06 | Aluminum Co Of America | Protecting aluminum from corrosion |
| US2276353A (en) * | 1935-09-28 | 1942-03-17 | Parker Rust Proof Co | Process of coating |
| US2213263A (en) * | 1936-01-10 | 1940-09-03 | Patents Corp | Process of coating metals |
| US2483510A (en) * | 1945-04-14 | 1949-10-04 | United Chromium Inc | Composition for dip coating solution and dip process for coloring zinc |
| US2493934A (en) * | 1946-12-27 | 1950-01-10 | Reynolds Metals Co | Production of protective coatings on aluminum and alloys thereof |
| US2858245A (en) * | 1956-08-16 | 1958-10-28 | Amchem Prod | Process for enameling aluminum |
| BE566276A (cg-RX-API-DMAC7.html) * | 1957-08-19 | 1958-04-15 | ||
| US3018211A (en) * | 1959-01-26 | 1962-01-23 | Purex Corp Ltd | Composition and process for brightening aluminum and its alloys |
| NL127354C (cg-RX-API-DMAC7.html) * | 1963-07-22 |
-
1964
- 1964-09-25 US US399365A patent/US3404046A/en not_active Expired - Lifetime
-
1965
- 1965-08-30 BE BE668966D patent/BE668966A/xx unknown
- 1965-09-10 DE DE1965M0066589 patent/DE1297952C2/de not_active Expired
- 1965-09-18 JP JP40057353A patent/JPS4939385B1/ja active Pending
- 1965-09-24 SE SE12418/65A patent/SE329070B/xx unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2137988A (en) * | 1936-10-21 | 1938-11-22 | Heresite & Chemical Company | Adherent aluminum compound |
| FR1105145A (fr) * | 1953-08-04 | 1955-11-28 | American Chem Paint Co | Procédé pour améliorer la résistance à la corrosion de couches protectrices contre la corrosion appliquées sur l'aluminium et ses alliages |
| US2970935A (en) * | 1959-03-02 | 1961-02-07 | Parker Rust Proof Co | Method of rinsing metallic surfaces with solutions containing hexavalent chromium |
| US3026220A (en) * | 1959-12-01 | 1962-03-20 | Du Pont | Aluminum pigments and fibers |
| GB988985A (en) * | 1962-10-15 | 1965-04-14 | Pyrene Co Ltd | Improvements relating to the treatment of conversion coatings on metal surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1297952B (de) | 1969-06-19 |
| SE329070B (cg-RX-API-DMAC7.html) | 1970-09-28 |
| JPS4939385B1 (cg-RX-API-DMAC7.html) | 1974-10-25 |
| BE668966A (cg-RX-API-DMAC7.html) | 1965-12-16 |
| US3404046A (en) | 1968-10-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 |