US2516685A - Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor - Google Patents
Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor Download PDFInfo
- Publication number
- US2516685A US2516685A US531778A US53177844A US2516685A US 2516685 A US2516685 A US 2516685A US 531778 A US531778 A US 531778A US 53177844 A US53177844 A US 53177844A US 2516685 A US2516685 A US 2516685A
- Authority
- US
- United States
- Prior art keywords
- solution
- acid
- final
- agents
- rinsing
- 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 13
- 230000008569 process Effects 0.000 title claims description 13
- 238000000576 coating method Methods 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 8
- 229910052782 aluminium Inorganic materials 0.000 title description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 4
- 229910052742 iron Inorganic materials 0.000 title description 4
- 239000000243 solution Substances 0.000 claims description 35
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 30
- 239000002253 acid Substances 0.000 claims description 19
- 239000000080 wetting agent Substances 0.000 claims description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 15
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Chemical compound O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000011253 protective coating Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000012487 rinsing solution Substances 0.000 description 12
- 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 11
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 229930182490 saponin Natural products 0.000 description 7
- 150000007949 saponins Chemical class 0.000 description 7
- 235000017709 saponins Nutrition 0.000 description 7
- 125000002877 alkyl aryl group Chemical group 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 125000003710 aryl alkyl group Chemical group 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 235000010210 aluminium Nutrition 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920000151 polyglycol Polymers 0.000 description 3
- 239000010695 polyglycol Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000003841 chloride salts Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- -1 or the like Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 241000416162 Astragalus gummifer Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 241000206672 Gelidium Species 0.000 description 1
- 229920000084 Gum arabic Polymers 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000009001 Quillaja saponaria Nutrition 0.000 description 1
- 241001454523 Quillaja saponaria Species 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920001615 Tragacanth Polymers 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 125000000963 oxybis(methylene) group Chemical group [H]C([H])(*)OC([H])([H])* 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000010409 thin film Substances 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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- 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
Definitions
- This invention relates to the art of preparing metal surfaces to receive surface protective coatings such as paint or the like. It is primarily concerned with the treatment of surfaces containing iron or aluminu x or their alloys, and is specifically cofcernd with the provision of a final rinsing solution to be applied to such surfaces before the final coating operation begins.
- the proportion used is sucdasjo produce an extremelyhilutesolfition" ...h%.Y1l1i H value of 5. or? less, and preferably between pH 3 and pH 5.
- a llOll-iOnlQ surface-acti ve agent capabl of reduci'fig surface thrones added tothe solution in amounts sufficient to reduce the surface tension to a value of the order of 50 dynes/cm. or less.
- the presence of the surface-active component ensures that the solution will. quickly and evenly wet the surface, thereby also promoting uniform action by the acid component.
- Another purpose of the wetting agent is to promote the physical action of the solution by facilitating the run-off, so that it will entrain and remove extraneous matter as it drains away, and will leave only a thin film behind it.
- the physical action of rinsing becomes more efiective, and at the same time less time is required to dry the work. Consequently there is less likelihood that the metal will be reoxidized while still wet.
- a rinsing solution of the type here proposed should contain very minute quantities of acid. It is sufficient to add from .0l% to .1% of either acid, adjusting the precise amount to attain the pH value most effective in relation to other factors, such as the nature of the cleaning agent previously used.
- acids of phosphorus we prefer to employ orthophosphoric, and to use the 75% grade.
- the wetting agent employed plays a very important part in the solution. It is essential that it should not ionize in the solution to any appreciable degree. Otherwise it might itself be responsible for introducing and depositing undesirable compounds upon the surface.
- llQfl-ionic emulsifying and wetting agents are available. Some of these are found in nature, among these being the saponins, soap bark extract, the alginates, pectin, lecithin, casein, gum arabic, gum tragacanth, albumin, glue, starch, gelatin and agar-agar. These natural agents are, however, noticeably less effective than certain synthetic non-ionic surface-active agents now commercially available in many different forms.
- the synthetic surface-tension depressants usein] in this process are of the general class of the substituted polyethylene glycols. Especially useful are those of the formula in which R stands for an alkyl, aryl, aralkyl, alkyl-aryl, or acyl radical containing at least 10 carbon atoms; n is an integer greater than 2; R1 stands for an alkyl, aryl, aralkyl, alkyl-aryl, or acyl radical or a hydrogen atom.
- Triton NE This is a polyglycol in which n indicates an average length of between 8 and 12. Many such products may be found in the catalogs of the chemical supply industry, and
- the substituted polyglycol ethers are partiglarly csirablemategials be- TlEftlfiFarefii'dre stablginacidfsblution and alsobecause "they'iiow' more 'easilyff'ro'iil'thesurface" attl'idconolusion'ofjhefr: treatment. *ltwillyof cours'fbe' apparent: that, ofthe many types of surface-active agents known, only those which produce a lowering of the surface tension are to' be considered. Many non-ionic materials having excellent wetting and emulsifying properties do not lower the surface tension sufficiently, others even increase it.
- the final rinse may be prepared on the spot, or a concentrate may be prepared in advance which is added to the proper amount of water to produce the concentration indicated.
- the ratio of phosphoric acid to saponin is approximately 1:3, and the ratio of acid and saponin toether to the amount of water is less than 1%.
- This solution is particularly desirable for high speed commercial operation, because of the ease with which the pH value of the solution can be adjusted.
- This formula produces a double effect, since the phosphoric acid is particularly useful in removing superficial contaminants and also, being a freely soluble liquid, can be added as needed to bring the bath to the pH value indicated; and the chromic acid does not produce any of the so-called "rust blush" which. i sometimes produced by phosphoric acid. Furthermore, the presence of the chromic acid seems to reduce the tendency of the phosphoric acid to produce rust- 2 blush.
- the proportion between chromic acid and phosphoric acid in this formula may be varied as desired, so as to take full advantage of the respective properties of both acids.
- a concentrated solution should be prepared, which can be diluted with water at the time of use to produce the pH desired and which will at the pH indicated have a surface tension within the range specified.
- a concentrated solution of this sort should not contain chromic acid, since this, in concentrated form, will react with the wetting agent to impair the effectiveness of both acid andagent. Accordingly, the following eX- ample is given to show the proportions of a concentrated material using phosphoric acid:
- This material can be prepared and shipped without fear of deterioration and, if added to a water 4:. bath containing, say, about 3000 gallons, will produce a solution having the characteristics desired, namely a pH not greater than 5 and a surface tension of less than d./cm.
- the addition of a substantial proportion of the wetting agent is not particularly harmful, it is wasteful, and should be avoided.
- saponin for example, has been added to the extent of about 2%, there seems to be practically no decrease in the surface tension of the solution upon the addition of further amounts of this agent.
- considerably smaller proportions of the synthetic non-ionic wetting agents will be found to be sufficient.
- the addition of fractional percentages of such agents produces a very striking effect.
- the addition of further increments is accompanied by a progressively declining rate in the reduction of surface tension up until concentrations in the neighborhood of 2% are reached, beyond which the synthetic agents also seem to lose the capacity to produce much further change in the surface tension of the solution.
- a dilute aqueous rinsing solution to be applied to ferriferousand aluminiferous metal surfaces after a primary cleaning treatment and before the application of a surface-protective coating said solution consisting essentially of water and from .01% to 10% of an acid component of the class which consists of chromic acid, phosphoric acid, and mixtures thereof; and from .001% to about 2.00% of a surface-active component consisting of a non-ionic wetting agent operative to reduce the surface-tension of the solution to a value of 50 dynes/cm. or less.
- the non-ionic wetting agent is a slu'facetension depressant having the generic formula R0 (C2H4O) 11131 in which R stands for a member of the group which consists of the alkyl, aryl, aralkyl, alkylaryl, and acyl radicals, containing at least 10 carbon atoms; n is an integer greater than 2; and R1 stands for a member of the group which consists of alkyl, aryl, aralkyl, alkyl-aryl, and acyl radicals and hydrogen.
- R0 (C2H4O) 11131 in which R stands for a member of the group which consists of the alkyl, aryl, aralkyl, alkylaryl, and acyl radicals, containing at least 10 carbon atoms; n is an integer greater than 2; and R1 stands for a member of the group which consists of alkyl, aryl, aralkyl, alkyl-aryl, and
- a dilute aqueous solution having a surface tension lower than 50 dynes/cm., and having a pH value not exceeding 5, which solution consists essentially of water and from .0l% to .10% of an acid component of the class which consists of chromic acid, phosphoric acid, and mixtures thereof; and a surface-active component consisting of a non-ionic wetting agent operative to reduce the surface tension of the solution.
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)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE462834D BE462834A (en)) | 1944-04-19 | ||
| US531778A US2516685A (en) | 1944-04-19 | 1944-04-19 | Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US531778A US2516685A (en) | 1944-04-19 | 1944-04-19 | Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2516685A true US2516685A (en) | 1950-07-25 |
Family
ID=24119006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US531778A Expired - Lifetime US2516685A (en) | 1944-04-19 | 1944-04-19 | Process of preparing iron and aluminum surfaces to receive organic coatings and solution therefor |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2516685A (en)) |
| BE (1) | BE462834A (en)) |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2601336A (en) * | 1949-02-17 | 1952-06-24 | Gen Electric | Process of adhering silicone rubber to copper |
| US2672449A (en) * | 1949-09-15 | 1954-03-16 | Foster D Snell Inc | Composition for cleaning metal |
| US2671995A (en) * | 1949-10-22 | 1954-03-16 | Colgate Palmolive Co | Packaging of materials |
| US2724668A (en) * | 1952-10-03 | 1955-11-22 | Parker Rust Proof Co | Combination cleaning and coating solution for metallic surfaces and method of forming coatings therewith |
| US2765223A (en) * | 1952-08-05 | 1956-10-02 | Lea Mfg Company | Buffing compositions |
| US2800422A (en) * | 1953-04-20 | 1957-07-23 | Piccinelli Achille | Process for rust-proofing and passivating iron articles |
| US2831814A (en) * | 1951-12-19 | 1958-04-22 | Poor & Co | Acid pickling of metals and compositions therefor |
| US2845376A (en) * | 1953-06-09 | 1958-07-29 | Neilson Chemical Company | Method of coating metal surfaces with phosphate |
| US2847384A (en) * | 1954-10-19 | 1958-08-12 | Wyandotte Chemicals Corp | Descalant composition and use |
| US2856322A (en) * | 1954-04-06 | 1958-10-14 | Pullman Standard Car Mfg Co | Coated ferrous metal article and method of preparing same |
| US2885273A (en) * | 1956-03-14 | 1959-05-05 | North American Aviation Inc | Method of etching metallic materials |
| US2970935A (en) * | 1959-03-02 | 1961-02-07 | Parker Rust Proof Co | Method of rinsing metallic surfaces with solutions containing hexavalent chromium |
| US2977315A (en) * | 1956-09-12 | 1961-03-28 | Lazarus Lab Inc | Water soluble iodine-phosphoric-acidsynthetic detergent composition |
| US2987427A (en) * | 1956-09-25 | 1961-06-06 | Ici Ltd | Metal coating baths |
| US3010853A (en) * | 1959-05-14 | 1961-11-28 | Solvent Service Inc | Method of cleaning pipes and the like |
| US3041227A (en) * | 1958-09-19 | 1962-06-26 | John F Jumer | Chemical polishing composition and method for aluminum metals |
| US3042554A (en) * | 1959-12-29 | 1962-07-03 | Melvin H Swann | Process and composition for rustproofing ferrous stock |
| US3048547A (en) * | 1958-06-23 | 1962-08-07 | Purex Corp Ltd | Composition and process for cleaning aluminum surfaces |
| US3074823A (en) * | 1959-05-01 | 1963-01-22 | Kaiser Aluminium Chem Corp | Method for removing complex sodium aluminum silicate scale |
| US3101287A (en) * | 1961-01-03 | 1963-08-20 | Leo V Curtin | Conditioning treatment for metal surfaces |
| US3102830A (en) * | 1960-03-21 | 1963-09-03 | Bernard Titeux | Establishment of ph value of a phosphoric acid solution by its reaction with iron prior to its use to treat ferrous surfaces |
| US3245841A (en) * | 1961-08-31 | 1966-04-12 | Clarke Sydney George | Production of iron powder having high electrical resistivity |
| US3247028A (en) * | 1961-06-28 | 1966-04-19 | Bayer Ag | Processes for improving the corrosion resistance of ni-co-metal coatings containing boron |
| DE1217738B (de) * | 1955-12-17 | 1966-05-26 | Daimler Benz Ag | Verfahren zum Reinigen von Gegenstaenden aus Eisen, Stahl und Zink und zum Erzeugen einer darauf haftenden Schutzschicht, sowie zum Reinigen von Gegenstaenden aus Aluminium |
| US3301718A (en) * | 1965-03-22 | 1967-01-31 | Beryllium Corp | Passivating beryllium |
| DE1236903B (de) * | 1961-03-07 | 1967-03-16 | Sunbeam Do Brasil Anti Corrosi | Loesung, Konzentrat und Verfahren zur Herstellung von Phosphatueberzuegen auf Eisen-und Nichteisenmetallen |
| US3420715A (en) * | 1965-06-04 | 1969-01-07 | Cons Foods Corp | Additive for phosphate coating solution |
| US3477881A (en) * | 1964-02-24 | 1969-11-11 | Yawata Seitetsu Kk | Process for the formation of electric insulating coating on electric iron sheet |
| US5529637A (en) * | 1994-02-17 | 1996-06-25 | Hydrochem Industrial Services, Inc. | Formic-carboxylic acid mixtures for removing iron oxide sclae from steel surfaces |
| WO1997021845A3 (en) * | 1995-11-30 | 1997-08-14 | Henkel Corp | Chromate treatment bath composition and process for application to metals |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1549411A (en) * | 1923-01-20 | 1925-08-11 | James H Gravell | Material and process for preparing metal for painting |
| US1759762A (en) * | 1926-11-04 | 1930-05-20 | Seligman Richard | Removing incrustation formed on metallic surfaces |
| US1935911A (en) * | 1931-03-16 | 1933-11-21 | H E Westervelt | Material for cleaning and preparing metal for paint |
| US2186177A (en) * | 1939-08-30 | 1940-01-09 | American Chem Paint Co | Art of coating metal surfaces with a water insoluble metallic phosphate |
| US2304299A (en) * | 1940-05-13 | 1942-12-08 | Boyle | Composition for treating metal surfaces preparatory to painting |
| US2355823A (en) * | 1944-08-15 | Polyglycol ethers of higher second | ||
| US2396776A (en) * | 1943-03-18 | 1946-03-19 | American Chem Paint Co | Cleaning composition |
-
0
- BE BE462834D patent/BE462834A/xx unknown
-
1944
- 1944-04-19 US US531778A patent/US2516685A/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2355823A (en) * | 1944-08-15 | Polyglycol ethers of higher second | ||
| US1549411A (en) * | 1923-01-20 | 1925-08-11 | James H Gravell | Material and process for preparing metal for painting |
| US1759762A (en) * | 1926-11-04 | 1930-05-20 | Seligman Richard | Removing incrustation formed on metallic surfaces |
| US1935911A (en) * | 1931-03-16 | 1933-11-21 | H E Westervelt | Material for cleaning and preparing metal for paint |
| US2186177A (en) * | 1939-08-30 | 1940-01-09 | American Chem Paint Co | Art of coating metal surfaces with a water insoluble metallic phosphate |
| US2304299A (en) * | 1940-05-13 | 1942-12-08 | Boyle | Composition for treating metal surfaces preparatory to painting |
| US2396776A (en) * | 1943-03-18 | 1946-03-19 | American Chem Paint Co | Cleaning composition |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2601336A (en) * | 1949-02-17 | 1952-06-24 | Gen Electric | Process of adhering silicone rubber to copper |
| US2672449A (en) * | 1949-09-15 | 1954-03-16 | Foster D Snell Inc | Composition for cleaning metal |
| US2671995A (en) * | 1949-10-22 | 1954-03-16 | Colgate Palmolive Co | Packaging of materials |
| US2831814A (en) * | 1951-12-19 | 1958-04-22 | Poor & Co | Acid pickling of metals and compositions therefor |
| US2765223A (en) * | 1952-08-05 | 1956-10-02 | Lea Mfg Company | Buffing compositions |
| US2724668A (en) * | 1952-10-03 | 1955-11-22 | Parker Rust Proof Co | Combination cleaning and coating solution for metallic surfaces and method of forming coatings therewith |
| US2800422A (en) * | 1953-04-20 | 1957-07-23 | Piccinelli Achille | Process for rust-proofing and passivating iron articles |
| US2845376A (en) * | 1953-06-09 | 1958-07-29 | Neilson Chemical Company | Method of coating metal surfaces with phosphate |
| US2856322A (en) * | 1954-04-06 | 1958-10-14 | Pullman Standard Car Mfg Co | Coated ferrous metal article and method of preparing same |
| US2847384A (en) * | 1954-10-19 | 1958-08-12 | Wyandotte Chemicals Corp | Descalant composition and use |
| DE1217738B (de) * | 1955-12-17 | 1966-05-26 | Daimler Benz Ag | Verfahren zum Reinigen von Gegenstaenden aus Eisen, Stahl und Zink und zum Erzeugen einer darauf haftenden Schutzschicht, sowie zum Reinigen von Gegenstaenden aus Aluminium |
| US2885273A (en) * | 1956-03-14 | 1959-05-05 | North American Aviation Inc | Method of etching metallic materials |
| US2977315A (en) * | 1956-09-12 | 1961-03-28 | Lazarus Lab Inc | Water soluble iodine-phosphoric-acidsynthetic detergent composition |
| US2987427A (en) * | 1956-09-25 | 1961-06-06 | Ici Ltd | Metal coating baths |
| US3048547A (en) * | 1958-06-23 | 1962-08-07 | Purex Corp Ltd | Composition and process for cleaning aluminum surfaces |
| US3041227A (en) * | 1958-09-19 | 1962-06-26 | John F Jumer | Chemical polishing composition and method for aluminum metals |
| US2970935A (en) * | 1959-03-02 | 1961-02-07 | Parker Rust Proof Co | Method of rinsing metallic surfaces with solutions containing hexavalent chromium |
| US3074823A (en) * | 1959-05-01 | 1963-01-22 | Kaiser Aluminium Chem Corp | Method for removing complex sodium aluminum silicate scale |
| US3010853A (en) * | 1959-05-14 | 1961-11-28 | Solvent Service Inc | Method of cleaning pipes and the like |
| US3042554A (en) * | 1959-12-29 | 1962-07-03 | Melvin H Swann | Process and composition for rustproofing ferrous stock |
| US3102830A (en) * | 1960-03-21 | 1963-09-03 | Bernard Titeux | Establishment of ph value of a phosphoric acid solution by its reaction with iron prior to its use to treat ferrous surfaces |
| US3101287A (en) * | 1961-01-03 | 1963-08-20 | Leo V Curtin | Conditioning treatment for metal surfaces |
| DE1236903B (de) * | 1961-03-07 | 1967-03-16 | Sunbeam Do Brasil Anti Corrosi | Loesung, Konzentrat und Verfahren zur Herstellung von Phosphatueberzuegen auf Eisen-und Nichteisenmetallen |
| US3247028A (en) * | 1961-06-28 | 1966-04-19 | Bayer Ag | Processes for improving the corrosion resistance of ni-co-metal coatings containing boron |
| US3245841A (en) * | 1961-08-31 | 1966-04-12 | Clarke Sydney George | Production of iron powder having high electrical resistivity |
| US3477881A (en) * | 1964-02-24 | 1969-11-11 | Yawata Seitetsu Kk | Process for the formation of electric insulating coating on electric iron sheet |
| US3301718A (en) * | 1965-03-22 | 1967-01-31 | Beryllium Corp | Passivating beryllium |
| US3420715A (en) * | 1965-06-04 | 1969-01-07 | Cons Foods Corp | Additive for phosphate coating solution |
| US5529637A (en) * | 1994-02-17 | 1996-06-25 | Hydrochem Industrial Services, Inc. | Formic-carboxylic acid mixtures for removing iron oxide sclae from steel surfaces |
| US5679170A (en) * | 1994-02-17 | 1997-10-21 | Hydrochem Industrial Services, Inc. | Methods for removing iron oxide scale from interior surfaces of steel vessels using formic acid-citric acid mixtures |
| WO1997021845A3 (en) * | 1995-11-30 | 1997-08-14 | Henkel Corp | Chromate treatment bath composition and process for application to metals |
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| Publication number | Publication date |
|---|---|
| BE462834A (en)) |
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