US1534446A - Method of preparing metals for painting - Google Patents
Method of preparing metals for painting Download PDFInfo
- Publication number
- US1534446A US1534446A US377447A US37744720A US1534446A US 1534446 A US1534446 A US 1534446A US 377447 A US377447 A US 377447A US 37744720 A US37744720 A US 37744720A US 1534446 A US1534446 A US 1534446A
- Authority
- US
- United States
- Prior art keywords
- painting
- metal
- oil
- preparing
- acid
- 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
- 239000002184 metal Substances 0.000 title description 16
- 229910052751 metal Inorganic materials 0.000 title description 16
- 238000000034 method Methods 0.000 title description 6
- 238000010422 painting Methods 0.000 title description 5
- 150000002739 metals Chemical class 0.000 title description 2
- 239000003921 oil Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003995 emulsifying agent Substances 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000206575 Chondrus crispus Species 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 241001481789 Rupicapra Species 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000002535 acidifier Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 scale Substances 0.000 description 1
- 239000002904 solvent 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Definitions
- This invention relates to cleaning metal and although the invention may be applied generally, it is especially useful for preparing iron and steel for painting or other finishing operation where the surface should be free from oil and rust and substances which cause rust.
- the object of the invention is to provide a process for etching and cleaning a metal surface so that after a paint or other covering is applied the coating will firmly adhere to the metal surface and be free from any tendency to rust or corrode between the metal surface and the applied covering.
- alcohol for such purposes is sometimes objectionable due to its cost and alsodue to its fire risk.
- alcohol and other volatile solvents may be dispensed with and that satisfactory results can be obtained by combining with the active cleaning agent an emulsifier in an aqueous solution.
- my invention consists in combining in a single solution, an acid, an emulsifier and water, and also in applying this admixture to the surface to be cleaned,
- the result of the application of my invention is a surface suitable for receiving a covering, such for instance, as "a coat of paint.
- This admixture - is applied to the metal and when the metal has been sufficiently cleaned it is wiped off with a dry rag or chamois or washed off with water. After the metal has become dry it may be painted: hen the metal is covered with a substan tial covering of oil or grease it will be found advisable to rub the surface with my admixture so that the oil will be ouickly'emulsitied and then allow the acid to attack the metallic surface.
- My invention is especially suited for preparing automobile bodies and other high grade sheet steel work for painting. Such work treated according to my invention and then painted is practically rust proof.
- the invention involves the removal of the oil, grease or oleaginous substances from the surface of the metal by emulsifying in water by means of gum, soluble in Water, carrageen, yolk of egg and the like, in the presence of an acid soluble or miscible in the liquid and adapted to remove and oppose the formation of rust and not to interfere with the described action of the gum or the like. Consequently in some of its broader aspects the invention is not limited to the substances named, but includes their equivalents, nor is the invention limited in all cases to the proportions given.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Patented Apr. 21, 1925.
UNITED STATES JAMES ,H. GRAVELL, OF ELKINS PARK, PENNSYLVANIA.
METHOD OF PREPARING METAIJS FOR PAINTING.
No Drawing.
To all whom it may concern:
Be it known that I, JAMES H. GRAVELL, a citizen of the United States, residing at Elkins Park, in the county of Montgomery and State of Pennsylvania, have invented a certain new and useful Method of Preparing Metals for Painting, of which the following is a specification.
This invention relates to cleaning metal and although the invention may be applied generally, it is especially useful for preparing iron and steel for painting or other finishing operation where the surface should be free from oil and rust and substances which cause rust.
The object of the invention is to provide a process for etching and cleaning a metal surface so that after a paint or other covering is applied the coating will firmly adhere to the metal surface and be free from any tendency to rust or corrode between the metal surface and the applied covering.
Owing to the factwthat metal used for' fabricating is often oily or greasy due to applied oils for preventing the metal from rusting orfrom oil and grease accumulated during the fabricating processes, etching and cleaning fluids have not met with suc-.
cess unless mixed with alcohol or its equivalent which will dissolve or remove the oil film so as to bring the active cleaning agent into actual contact with the metal.
The use of alcohol for such purposes is sometimes objectionable due to its cost and alsodue to its fire risk. I have discovered that alcohol and other volatile solvents may be dispensed with and that satisfactory results can be obtained by combining with the active cleaning agent an emulsifier in an aqueous solution.
Generally stated, my invention consists in combining in a single solution, an acid, an emulsifier and water, and also in applying this admixture to the surface to be cleaned,
. must be computable.
' and removing the resulting products by wiping or washing. The result of the application of my invention is a surface suitable for receiving a covering, such for instance, as "a coat of paint.
Although any suitable acid and emulsifier may be selected it is obvious that the two I have found that phosphoric acid andgum arabic in an equeous solution produces satisfactory results.
Application filed April 29, 1920. Serial No. 377,447.
I-have found a satisfactor composition of ingredients to be; 85% p osphoric acid 1 gallon, water 5 gallons, gum arabic 24 ounces.
This admixture -is applied to the metal and when the metal has been sufficiently cleaned it is wiped off with a dry rag or chamois or washed off with water. After the metal has become dry it may be painted: hen the metal is covered with a substan tial covering of oil or grease it will be found advisable to rub the surface with my admixture so that the oil will be ouickly'emulsitied and then allow the acid to attack the metallic surface.
Experiments have shown that the acid alone will not wet or attach itself to the oil surface except in the presence of the emulsifier but in the presence of the emulsifier the oil on the surface is emulsified and removed from the surface allowing the acid content to actually contact with the metal surface and freeing it from objectionable substances such as rust, scale, acid runs, hand marks, etc.
My invention is especially suited for preparing automobile bodies and other high grade sheet steel work for painting. Such work treated according to my invention and then painted is practically rust proof.
The invention involves the removal of the oil, grease or oleaginous substances from the surface of the metal by emulsifying in water by means of gum, soluble in Water, carrageen, yolk of egg and the like, in the presence of an acid soluble or miscible in the liquid and adapted to remove and oppose the formation of rust and not to interfere with the described action of the gum or the like. Consequently in some of its broader aspects the invention is not limited to the substances named, but includes their equivalents, nor is the invention limited in all cases to the proportions given.
3 I claim:
j The method of preparing oiled steel for painting which consists in simultaneously chemically etching the surface and emulsifying the oil on the surface, and removing the productsof the etching and emulsifying by washing the treated surface of the metal with water. I
JAMES H. GRAVELL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US377447A US1534446A (en) | 1920-04-29 | 1920-04-29 | Method of preparing metals for painting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US377447A US1534446A (en) | 1920-04-29 | 1920-04-29 | Method of preparing metals for painting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1534446A true US1534446A (en) | 1925-04-21 |
Family
ID=23489144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US377447A Expired - Lifetime US1534446A (en) | 1920-04-29 | 1920-04-29 | Method of preparing metals for painting |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1534446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2763536A (en) * | 1953-05-20 | 1956-09-18 | Dow Chemical Co | Etching |
| US4264377A (en) * | 1976-10-28 | 1981-04-28 | Schafer Ian B | Material for treatment of surfaces |
-
1920
- 1920-04-29 US US377447A patent/US1534446A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2763536A (en) * | 1953-05-20 | 1956-09-18 | Dow Chemical Co | Etching |
| US4264377A (en) * | 1976-10-28 | 1981-04-28 | Schafer Ian B | Material for treatment of surfaces |
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