US2674523A - Process and composition for treatment of magnesium prior to spot welding - Google Patents
Process and composition for treatment of magnesium prior to spot welding Download PDFInfo
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- US2674523A US2674523A US351054A US35105453A US2674523A US 2674523 A US2674523 A US 2674523A US 351054 A US351054 A US 351054A US 35105453 A US35105453 A US 35105453A US 2674523 A US2674523 A US 2674523A
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- composition
- sulfonic acid
- spot welding
- acid
- viscous
- 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
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- 239000000203 mixture Substances 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 16
- 229910052749 magnesium Inorganic materials 0.000 title claims description 16
- 239000011777 magnesium Substances 0.000 title claims description 16
- 238000003466 welding Methods 0.000 title claims description 11
- 238000011282 treatment Methods 0.000 title description 3
- 238000005530 etching Methods 0.000 claims description 19
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims description 16
- 229940005642 polystyrene sulfonic acid Drugs 0.000 claims description 13
- 239000003352 sequestering agent Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 10
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- -1 xylene sulfonic acids Chemical class 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- 125000001931 aliphatic group Chemical group 0.000 description 9
- 229910021529 ammonia Inorganic materials 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000004793 Polystyrene Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229920002223 polystyrene Polymers 0.000 description 5
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000422 delta-lactone group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- JIRHAGAOHOYLNO-UHFFFAOYSA-N (3-cyclopentyloxy-4-methoxyphenyl)methanol Chemical compound COC1=CC=C(CO)C=C1OC1CCCC1 JIRHAGAOHOYLNO-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000015165 citric acid Nutrition 0.000 description 2
- 229960004106 citric acid Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000012208 gluconic acid Nutrition 0.000 description 2
- 239000000174 gluconic acid Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 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
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- 229940092714 benzenesulfonic acid Drugs 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000008096 xylene 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
- C23G1/12—Light metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3612—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with organic compounds as principal constituents
Definitions
- nesium is much too reactive a metal to be etched by the aqueous baths now employed for etching aluminum and aluminum alloys. Accordingly the cleaning of magnesium surfaces prior to spot welding has heretofore been carried out by the use of steel wool.
- the composition and process of the present inpresent invention is an aqueous material including certain acidic etching ingredients and certain sequestering agents or organic reducing agents.
- the acidic etching agents, or some thereof are materials of viscous nature and having the property of confining its action in the etching composition to the surface of the magnesium are ticle to be etched.
- Such viscous acid etching agents are provided by the use of polystyrene sulfonic acids. These polystyrene sulfonic acids in the composition have a property of etching the coating on the magnesium article without allowing, however, a deep penetration of the etching composition into the surface so that the activity of the acidic composition is confined only to the coating which is desired to be etched and removed.
- the polystyrene sulfonic acids employed are producable in either of two ways, i. e., through either first polymerizing styrene and then sulfonating the same, or by first sulfonatingstyrene and then polymerizing it, the latter being the preferred method. It is principally the molecular weight of the polystyrene molecule which deterpolymerized it is easier to produce a polystyrene viscosity than is the case where the styrene is first polymerized and then sulfonated. The process of sulfonating polystyrene alters the molecular weight.
- the acidic etching composition also includes an aryl sulionic acid, those having less than four alkyl carbon atoms being found usable, such as benzene, toluene or xylene sulfonic acids.
- aryl sulionic acids those having less than four alkyl carbon atoms being found usable, such as benzene, toluene or xylene sulfonic acids.
- the sulfonic acids employed both the polystyrene acid and aryl sulfonic acid, are thought to etch the surface coating from magnesium articles by hydrolizing to some extent to release sulfuric acid in active form, the activity of which is confined to the surface coating because of the viscosity and low penetrating properties of the composition.
- droxy carboxylic acids are citric acid, tartaric acid, gluconic acid, glucona deltalactone, as well as the sodium or ammonia compounds thereof.
- a preferred composition comprises:
- any aryl sulfonic acid with less than four alkyl carbon atoms may be substituted for the xylene sulfonic acid, such as benzene sulfonic acid, toluene sulfonic acid and the aryl sulfonic acid content may vary within the range of from 2% to 10%.
- any water soluble aliphatic hydroxy carboxylic acid such as citricacid, tartaric acid, or gluconic acid, may be substituted for the glucona delta lactone and the quantity of such sequestering agent may vary in the composition from 5% to 25%.
- the 28 Baum ammonia is employed in the composition since it has some beneficial effect in the desired sequestering action but may be omitted when desired.
- the ammonia content is about 0.2% but it may vary when employed within the limits of about 0.1% to 1.7%, and in addition thereto or alternately the composition may include equivalent amounts of the sodium ion, either introduced into the composition by employing the sodium salts of the water soluble aliphatic hydroxy carboxylic acid in place of the acid itself, or in any other manner.
- the polystyrene sulfonic acid in the composition may vary in the range of 2% to and the most desirable viscous properties of the solution, as well as the etching properties, are obtained when using polystyrene sulionic acids having molecular weights in the order of 20,000 to 250,000.
- a composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent.
- a composition for cleaning magnesium 6 which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10 the sequestering agent employed being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%.
- a composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the composition also including ammonia.
- a composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10%, the sequestering agent employed being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%, the composition also including ammonia from 0.1% to 1.7%.
- a process of cleaning magnesium prior to spot welding comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent.
- a process of cleaning magnesium prior to spot welding comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10%, the sequestering agent being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%.
- a process of cleaning magnesium prior to spot welding comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the .composition also including ammonia.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Description
Patented Apr. 6, 1954 r 2,674,523 PROCESS AND COMPOSITION FOR TREAT- MENT OF MAGNESI WELDING UM PRIOR TO SPOT Louis McDonald, Altadena, and Alfred E. Hawley, Long Beach, Calif., asslgnors to Kelite Products, Inc., Los Angeles, Calif fornia a corporation of Cali- No Drawing. Application April 24, 1953,
Serial No. 351,054
7 Claims.
nesium is much too reactive a metal to be etched by the aqueous baths now employed for etching aluminum and aluminum alloys. Accordingly the cleaning of magnesium surfaces prior to spot welding has heretofore been carried out by the use of steel wool.
It is a general object of the present invention to provide a composition and process for cleaning magnesium prior to spot welding through the use of an aqueous etching material.
The composition and process of the present inpresent invention is an aqueous material including certain acidic etching ingredients and certain sequestering agents or organic reducing agents. The acidic etching agents, or some thereof, are materials of viscous nature and having the property of confining its action in the etching composition to the surface of the magnesium are ticle to be etched. Such viscous acid etching agents are provided by the use of polystyrene sulfonic acids. These polystyrene sulfonic acids in the composition have a property of etching the coating on the magnesium article without allowing, however, a deep penetration of the etching composition into the surface so that the activity of the acidic composition is confined only to the coating which is desired to be etched and removed. The polystyrene sulfonic acids employed are producable in either of two ways, i. e., through either first polymerizing styrene and then sulfonating the same, or by first sulfonatingstyrene and then polymerizing it, the latter being the preferred method. It is principally the molecular weight of the polystyrene molecule which deterpolymerized it is easier to produce a polystyrene viscosity than is the case where the styrene is first polymerized and then sulfonated. The process of sulfonating polystyrene alters the molecular weight.
The acidic etching composition also includes an aryl sulionic acid, those having less than four alkyl carbon atoms being found usable, such as benzene, toluene or xylene sulfonic acids. The sulfonic acids employed, both the polystyrene acid and aryl sulfonic acid, are thought to etch the surface coating from magnesium articles by hydrolizing to some extent to release sulfuric acid in active form, the activity of which is confined to the surface coating because of the viscosity and low penetrating properties of the composition.
droxy carboxylic acids are citric acid, tartaric acid, gluconic acid, glucona deltalactone, as well as the sodium or ammonia compounds thereof.
In the art the effectiveness of a process of the surface resistance of the coating to about 20 to 40 micro-ohms in about five or ten minutes of treatment.
tory for spot welding and therefore the process and composition of the present invention are enabled to satisfactorily clean magnesium surfaces for spot welding without the necessity of the use of steel wool, which is the present practice.
The composition and process of the present invention, together with further advantages of the invention, will be understood from the following description of a preferred composition and process. A preferred composition comprises:
Per cent Xylene sulfonic acid 28 Baum ammonia 0.5
Glucona delta lactone 6.75
Polystyrene sulfonic acid '6 Water 81.75
In the foregoing preferred composition any aryl sulfonic acid with less than four alkyl carbon atoms may be substituted for the xylene sulfonic acid, such as benzene sulfonic acid, toluene sulfonic acid and the aryl sulfonic acid content may vary within the range of from 2% to 10%. In the composition any water soluble aliphatic hydroxy carboxylic acid, such as citricacid, tartaric acid, or gluconic acid, may be substituted for the glucona delta lactone and the quantity of such sequestering agent may vary in the composition from 5% to 25%.
The 28 Baum ammonia is employed in the composition since it has some beneficial effect in the desired sequestering action but may be omitted when desired. In the preferred composition the ammonia content is about 0.2% but it may vary when employed within the limits of about 0.1% to 1.7%, and in addition thereto or alternately the composition may include equivalent amounts of the sodium ion, either introduced into the composition by employing the sodium salts of the water soluble aliphatic hydroxy carboxylic acid in place of the acid itself, or in any other manner. The polystyrene sulfonic acid in the composition may vary in the range of 2% to and the most desirable viscous properties of the solution, as well as the etching properties, are obtained when using polystyrene sulionic acids having molecular weights in the order of 20,000 to 250,000.
While the particular composition and process herein described for etching and cleaning magnesium preparatory to spot welding are well adapted to carry out the objects of the present invention, this invention is of the scope set forth in the appended claims.
We claim:
1. A composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent.
2. A composition for cleaning magnesium 6 which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10 the sequestering agent employed being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%.
3. A composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the composition also including ammonia.
4. A composition for cleaning magnesium which comprises, a viscous aqueous solution including essentially polystyrene sulfonic acid and aryl sulfonic acid having less than 4 alkyl carbon atoms and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10%, the sequestering agent employed being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%, the composition also including ammonia from 0.1% to 1.7%.
5. A process of cleaning magnesium prior to spot welding which process comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent.
6. A process of cleaning magnesium prior to spot welding which process comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the proportions of polystyrene sulfonic acid being between 2% and 10%, the sequestering agent being between 5% and 25%, the aryl sulfonic acid being between 2% and 10%.
1. A process of cleaning magnesium prior to spot welding which process comprises, applying to the surface to be spot welded a viscous etching composition, which viscous etching composition is an aqueous composition including essentially polystyrene sulfonic acid and aryl sulfonic acid of less than 4 alkyl carbon atoms, and a water soluble aliphatic hydroxy carboxylic acid sequestering agent, the .composition also including ammonia.
References Cited in the file of this patent UNITED STATES PATENTS
Claims (1)
- 5. A PROCESS OF CLEANING MAGNESIUM PRIOR TO SPOT WELDING WHICH PROCESS COMPRISES, APPLYING TO THE SURFACE TO BE SPOT WELDED A VISCOUS ETCHING COMPOSITION, WHICH VISCOUS ETCHING COMPOSITION IS AN AQUEOUS COMPOSITION INCLUDING ESSENTIALLY POLYSTYRENE SULFONIC ACID AND ARYL SULFONIC ACID OF LESS THAN 4 ALKYL CARBON ATOMS, AND A WATER SOLUBLE ALIPHATIC HYDROXY CARBOXYLIC ACID SEQUESTERING AGENT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US351054A US2674523A (en) | 1953-04-24 | 1953-04-24 | Process and composition for treatment of magnesium prior to spot welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US351054A US2674523A (en) | 1953-04-24 | 1953-04-24 | Process and composition for treatment of magnesium prior to spot welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2674523A true US2674523A (en) | 1954-04-06 |
Family
ID=23379381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US351054A Expired - Lifetime US2674523A (en) | 1953-04-24 | 1953-04-24 | Process and composition for treatment of magnesium prior to spot welding |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2674523A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2710792A (en) * | 1953-03-30 | 1955-06-14 | Kelite Products Inc | Composition and process for treating aluminum and aluminum alloys preparatory to spot welding |
| US2820729A (en) * | 1955-08-04 | 1958-01-21 | Dow Chemical Co | Removal of scale from ferrous metals |
| US2852077A (en) * | 1955-04-27 | 1958-09-16 | Nat Aluminate Corp | Process of improving and maintaining the water permeability of geological formations |
| US2853372A (en) * | 1954-11-22 | 1958-09-23 | Kelite Products Inc | Composition and process for the controlled etching of aluminum and aluminum alloys |
| US2982739A (en) * | 1955-07-15 | 1961-05-02 | Diversey Corp | Detergent additives |
| US2994664A (en) * | 1958-02-19 | 1961-08-01 | Nalco Chemical Co | Dry acid cleaning compositions |
| US3000767A (en) * | 1959-04-30 | 1961-09-19 | Solvent Service Inc | Method of cleaning internal ferrous metal surfaces of steam generating equipment |
| US3007879A (en) * | 1958-02-14 | 1961-11-07 | Gen Mills Inc | Stabilized gums and methods of making them |
| US3053719A (en) * | 1958-12-08 | 1962-09-11 | Purex Corp Ltd | Composition and process for etching magnesium |
| US3085915A (en) * | 1958-03-13 | 1963-04-16 | Siemens Ag | Method of removing rust from ironcontaining materials, particularly for the cleaning of boiler plants |
| US3173875A (en) * | 1961-11-09 | 1965-03-16 | Wyandotte Chemicals Corp | Acid bowl cleaner |
| US3294689A (en) * | 1963-10-24 | 1966-12-27 | John S Pierce | Synergistic sequestering agent |
| US3328304A (en) * | 1964-07-31 | 1967-06-27 | Guardian Chemical Corp | Chelating agents and methods for their manufacture |
| US4317735A (en) * | 1980-03-18 | 1982-03-02 | The Dow Chemical Company | Method of inhibiting crosslinking of aqueous xanthan gums in the presence of ferric acid ions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1994500A (en) * | 1932-12-31 | 1935-03-19 | Grasselli Chemical Co | Etching zinc plates |
| US2428749A (en) * | 1944-08-19 | 1947-10-07 | Dow Chemical Co | Surface treatment of magnesium alloys |
| US2465750A (en) * | 1944-05-23 | 1949-03-29 | Reid Engineering Company | Composition for preparing aluminum and the like for welding |
| US2612485A (en) * | 1949-08-11 | 1952-09-30 | Monsanto Chemicals | Aqueous dispersions containing a water-soluble sulfonated polystyrene |
-
1953
- 1953-04-24 US US351054A patent/US2674523A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1994500A (en) * | 1932-12-31 | 1935-03-19 | Grasselli Chemical Co | Etching zinc plates |
| US2465750A (en) * | 1944-05-23 | 1949-03-29 | Reid Engineering Company | Composition for preparing aluminum and the like for welding |
| US2428749A (en) * | 1944-08-19 | 1947-10-07 | Dow Chemical Co | Surface treatment of magnesium alloys |
| US2612485A (en) * | 1949-08-11 | 1952-09-30 | Monsanto Chemicals | Aqueous dispersions containing a water-soluble sulfonated polystyrene |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2710792A (en) * | 1953-03-30 | 1955-06-14 | Kelite Products Inc | Composition and process for treating aluminum and aluminum alloys preparatory to spot welding |
| US2853372A (en) * | 1954-11-22 | 1958-09-23 | Kelite Products Inc | Composition and process for the controlled etching of aluminum and aluminum alloys |
| US2852077A (en) * | 1955-04-27 | 1958-09-16 | Nat Aluminate Corp | Process of improving and maintaining the water permeability of geological formations |
| US2982739A (en) * | 1955-07-15 | 1961-05-02 | Diversey Corp | Detergent additives |
| US2820729A (en) * | 1955-08-04 | 1958-01-21 | Dow Chemical Co | Removal of scale from ferrous metals |
| US3007879A (en) * | 1958-02-14 | 1961-11-07 | Gen Mills Inc | Stabilized gums and methods of making them |
| US2994664A (en) * | 1958-02-19 | 1961-08-01 | Nalco Chemical Co | Dry acid cleaning compositions |
| US3085915A (en) * | 1958-03-13 | 1963-04-16 | Siemens Ag | Method of removing rust from ironcontaining materials, particularly for the cleaning of boiler plants |
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| US3328304A (en) * | 1964-07-31 | 1967-06-27 | Guardian Chemical Corp | Chelating agents and methods for their manufacture |
| US4317735A (en) * | 1980-03-18 | 1982-03-02 | The Dow Chemical Company | Method of inhibiting crosslinking of aqueous xanthan gums in the presence of ferric acid ions |
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