US3650982A - Process for inhibiting corrosion of tin-plated steel aerosol cans - Google Patents
Process for inhibiting corrosion of tin-plated steel aerosol cans Download PDFInfo
- Publication number
- US3650982A US3650982A US796577A US3650982DA US3650982A US 3650982 A US3650982 A US 3650982A US 796577 A US796577 A US 796577A US 3650982D A US3650982D A US 3650982DA US 3650982 A US3650982 A US 3650982A
- Authority
- US
- United States
- Prior art keywords
- weight
- tin
- hydrocarbon
- plated steel
- isobutane
- 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
- 239000000443 aerosol Substances 0.000 title abstract description 21
- 229910000831 Steel Inorganic materials 0.000 title abstract description 15
- 239000010959 steel Substances 0.000 title abstract description 15
- 238000005260 corrosion Methods 0.000 title abstract description 13
- 230000007797 corrosion Effects 0.000 title abstract description 13
- 238000000034 method Methods 0.000 title description 8
- 230000002401 inhibitory effect Effects 0.000 title description 2
- 229930195733 hydrocarbon Natural products 0.000 abstract description 27
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 27
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 21
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 abstract description 13
- 239000003380 propellant Substances 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 11
- FGLBSLMDCBOPQK-UHFFFAOYSA-N 2-nitropropane Chemical compound CC(C)[N+]([O-])=O FGLBSLMDCBOPQK-UHFFFAOYSA-N 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 56
- 239000001282 iso-butane Substances 0.000 description 28
- 239000003112 inhibitor Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000012141 concentrate Substances 0.000 description 10
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 6
- MCSAJNNLRCFZED-UHFFFAOYSA-N nitroethane Chemical compound CC[N+]([O-])=O MCSAJNNLRCFZED-UHFFFAOYSA-N 0.000 description 6
- 229930195734 saturated hydrocarbon Natural products 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 235000021388 linseed oil Nutrition 0.000 description 2
- 239000000944 linseed oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- FIPWRIJSWJWJAI-UHFFFAOYSA-N Butyl carbitol 6-propylpiperonyl ether Chemical compound C1=C(CCC)C(COCCOCCOCCCC)=CC2=C1OCO2 FIPWRIJSWJWJAI-UHFFFAOYSA-N 0.000 description 1
- YVGGHNCTFXOJCH-UHFFFAOYSA-N DDT Chemical compound C1=CC(Cl)=CC=C1C(C(Cl)(Cl)Cl)C1=CC=C(Cl)C=C1 YVGGHNCTFXOJCH-UHFFFAOYSA-N 0.000 description 1
- VXSIXFKKSNGRRO-MXOVTSAMSA-N [(1s)-2-methyl-4-oxo-3-[(2z)-penta-2,4-dienyl]cyclopent-2-en-1-yl] (1r,3r)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate;[(1s)-2-methyl-4-oxo-3-[(2z)-penta-2,4-dienyl]cyclopent-2-en-1-yl] (1r,3r)-3-[(e)-3-methoxy-2-methyl-3-oxoprop-1-enyl Chemical class CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1.CC1(C)[C@H](/C=C(\C)C(=O)OC)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1 VXSIXFKKSNGRRO-MXOVTSAMSA-N 0.000 description 1
- NWGKJDSIEKMTRX-BFWOXRRGSA-N [(2r)-2-[(3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)C1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-BFWOXRRGSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008266 hair spray Substances 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 239000002917 insecticide 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
- 239000004922 lacquer Substances 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 1
- 235000010935 mono and diglycerides of fatty acids Nutrition 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 125000004971 nitroalkyl group Chemical group 0.000 description 1
- LYGJENNIWJXYER-BJUDXGSMSA-N nitromethane Chemical group [11CH3][N+]([O-])=O LYGJENNIWJXYER-BJUDXGSMSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 description 1
- 229940070846 pyrethrins Drugs 0.000 description 1
- 239000002728 pyrethroid Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/30—Materials not provided for elsewhere for aerosols
Definitions
- ABSTRACT OF THE DISCLOSURE Propellant compositions, inhibited against corrosion of tin-plated steel aerosol cans containing water-based concentrates, consisting essentially of at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms and about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or Z-nitropropane.
- This invention relates to inhibited hydrocarbon propellant compositions which are non-corrosive to tin-plated steel aerosol cans containing water-based concentrates.
- Aerosol products such as room deodorants, insecticides and hair sprays, which are composed of active ingredients combined with anhydrous organic solvents, are known commercially. These anhydrous flammable concentrates are propelled using nonflammable liquefied fluorocarbons such as monofluorotrichloromethane and symmetrical dichlorodifiuoromethane. When used in tin-plated steel aerosol cans, such formulations have no corrosive effect on the aerosol cans.
- propellant compositions inhibited against corrosion of tin-plated steel aerosol cans containing water-based concentrates, consist essentially of at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms and about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or Z-nitropropane.
- the hydrocarbon propellants comprise one or more liquefied saturated hydrocarbons containing 3 or 4 carbon atoms, specifically propane, isobutane, normal butane and mixtures thereof.
- the hydrocarbons may be either synthetic or natural hydrocarbons. In the case of natural hydrocarbons, the corrosive action on tin-plated steel aerosol cans is more acute.
- the natural hydrocarbons are obtained by conventional distillation of liquefied natural gas or petroleum and may be employed in crude or purified state. Purification of the natural hydrocarbons is generally carried out by passing the hydrocarbon through activated carbon and molecular sieves.
- the synthetic hydrocarbons are produced by conventional hydrocracking or hydroforming procedures.
- the inhibitors are employed in amount varying from about 0.01 to 2% by weight based on the hydrocarbon.
- Atent O 'ice Preferably the amount varies from about 0.05 to 0.08% by weight based on the hydrocarbon. Smaller amounts of inhibitor are ineffective while larger amounts produce no further advantage and tend to become uneconomical.
- the water-based concentrates contain, in addition to water, conventional emulsifying agents and active ingredients. If desired, the concentrates may also contain conventional organic solvents.
- nitromethane and 2-nitropropane inhibitors are soluble in the hydrocarbon propellants.
- the inhibitors can be added to the hydrocarbon or to aerosol formulation containing the hydrocarbon.
- nitromethane and 2-nitropropane effectively inhibit the corrosion of tin-plated steel aerosol cans was completely unpredictable and unexpected.
- closely related nitroalkanes such as nitroethane and l-nitropropane, fail to adequately prevent such corrosion.
- other known corrosion inhibitors such as phenol, vinylidene chloride and epoxidized linseed oil, are also unsuitable.
- Examples are given hereafter illustrating evaluation of the present inhibitors, including comparative testing. These tests were carried out for a period of several weeks at a temperature of 110 F. Such tests are standard in the aerosol industry for evaluating the effect on aerosol cans of various materials which might be used therein. In the comparative tests, detinning of the cans is inevitably followed by rusting of the steel substrate.
- Epoxol 9-5 epoxidized linseed oil
- EXAMPLE 2 In further tests, formulations comprising by weight of water and 20% by weight of natural isobutane were placed in tin-plated steel aerosol cans. Potential inhibitors were added to the formulations, and the cans were capped and stored for a period of three weeks at a temperature of 110 F. Upon inspection of the cans after this period, the following results were noted:
- Hydrocarbon Can corrosion Isobutane (control) Detinning.
- insecticidal formulations containing natural isobutane as propellant were placed in tin- Component: Weight Pyrethrins (20%) 1.00 Piperonyl butoxide 1.25
- the cans were capped and stored for a period of three weeks at a temperature of -F. Upon inspection of the cans after this period, the can containing no inhibitor had detinned whereas the can containing the nitromethane inhibitor showed no detinning.
- a process of inhibiting corrosion of a tin-plated steel aerosol can containing a water-based concentrate and at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms as propellant which comprises adding to the can about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or 2-nitropropane.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Paints Or Removers (AREA)
Abstract
PROPELLANT COMPOSITION INHIBITED AGAINST CORROSION OF TIN-PLATED STEEL AEROSOL CANS CONTAINING WATER-BASED CONCETRATES, CONSISTIG ESSENTIALLY OF AT LEAST ONE LIQUEFIED STURATED HYDROCARBON HAVING 3 OR 4 CARBON ATOMS AND ABOUT 0.01 TO 2% BY WEIGHT BASED ON THE HYDROCARBON OF NITROMETHANE OR 2-NITROPROPANE.
Description
United States ABSTRACT OF THE DISCLOSURE =Propellant compositions, inhibited against corrosion of tin-plated steel aerosol cans containing water-based concentrates, consisting essentially of at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms and about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or Z-nitropropane.
This invention relates to inhibited hydrocarbon propellant compositions which are non-corrosive to tin-plated steel aerosol cans containing water-based concentrates.
Aerosol products such as room deodorants, insecticides and hair sprays, which are composed of active ingredients combined with anhydrous organic solvents, are known commercially. These anhydrous flammable concentrates are propelled using nonflammable liquefied fluorocarbons such as monofluorotrichloromethane and symmetrical dichlorodifiuoromethane. When used in tin-plated steel aerosol cans, such formulations have no corrosive effect on the aerosol cans.
A multitude of aerosol products which contain concentrades emulsified with water is now being marketed. Since these concentrates are non-flammable, they can be blended with propellants other than liquefied fiuorocarbons, particularly with liquefied saturated hydrocarbons. Use of the hydrocarbon propellants, however, has been found to cause tin-plated steel aerosol cans to corrode and rust. It has, therefore, been necessary to coat the tin plating with either a lacquer or plastic material. Even with such coating, however, corrosion and rusting still occur.
It is, therefore, an object of the present invention to provide saturated hydrocarbon propellants which are inhibited against corrosion of tin-plated steel aerosol cans containing water-based concentrates. Other objects and advantages of the present invention will be apparent from the following description.
In accordance with the present invention, propellant compositions, inhibited against corrosion of tin-plated steel aerosol cans containing water-based concentrates, consist essentially of at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms and about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or Z-nitropropane.
The hydrocarbon propellants comprise one or more liquefied saturated hydrocarbons containing 3 or 4 carbon atoms, specifically propane, isobutane, normal butane and mixtures thereof. The hydrocarbons may be either synthetic or natural hydrocarbons. In the case of natural hydrocarbons, the corrosive action on tin-plated steel aerosol cans is more acute. The natural hydrocarbons are obtained by conventional distillation of liquefied natural gas or petroleum and may be employed in crude or purified state. Purification of the natural hydrocarbons is generally carried out by passing the hydrocarbon through activated carbon and molecular sieves. The synthetic hydrocarbons are produced by conventional hydrocracking or hydroforming procedures.
The inhibitors are employed in amount varying from about 0.01 to 2% by weight based on the hydrocarbon.
atent O 'ice Preferably the amount varies from about 0.05 to 0.08% by weight based on the hydrocarbon. Smaller amounts of inhibitor are ineffective while larger amounts produce no further advantage and tend to become uneconomical.
The water-based concentrates contain, in addition to water, conventional emulsifying agents and active ingredients. If desired, the concentrates may also contain conventional organic solvents.
The corrosive effect of uninhibited hydrocarbon propellants in water-based concentrates is manifested by detinning of the tin plating and rusting of the steel aerosol can. The theory on which corrosion of the tin-plated steel aerosol cans is inhibited by nitromethane and Z-nitropropane is not known. It is believed, however, that these inhibitors may negate the corrosive effect of dissolved oxygen in the water and propellant.
The nitromethane and 2-nitropropane inhibitors are soluble in the hydrocarbon propellants. As desired, the inhibitors can be added to the hydrocarbon or to aerosol formulation containing the hydrocarbon.
The fact that nitromethane and 2-nitropropane effectively inhibit the corrosion of tin-plated steel aerosol cans was completely unpredictable and unexpected. Thus, closely related nitroalkanes, such as nitroethane and l-nitropropane, fail to adequately prevent such corrosion. In addition, other known corrosion inhibitors, such as phenol, vinylidene chloride and epoxidized linseed oil, are also unsuitable.
Examples are given hereafter illustrating evaluation of the present inhibitors, including comparative testing. These tests were carried out for a period of several weeks at a temperature of 110 F. Such tests are standard in the aerosol industry for evaluating the effect on aerosol cans of various materials which might be used therein. In the comparative tests, detinning of the cans is inevitably followed by rusting of the steel substrate.
EXAMPLE 1 Hydrocarbon: Can corrosion Synthetic isobutane (control) Detinning. Natural isobutane (control) Do. Mixture of synthetic and natural iso- Do.
butane (control). Synthetic isobutane containing 0.05%
No detinning. by weight of nitromethane.
Natural isobutane containing 0.05% Do.
by weight of nitromethane.
Natural isobutane containing 0.05% Detinning.
by weight of Epoxol 9-5 (epoxidized linseed oil).
Natural isobutane containing 0.05% Do.
by weight of phenol.
EXAMPLE 2 In further tests, formulations comprising by weight of water and 20% by weight of natural isobutane were placed in tin-plated steel aerosol cans. Potential inhibitors were added to the formulations, and the cans were capped and stored for a period of three weeks at a temperature of 110 F. Upon inspection of the cans after this period, the following results were noted:
Hydrocarbon: Can corrosion Isobutane (control) Detinning.
Isobutane containing 0.05% by No detinning.
weight of nitromethane.
Isobutane containing 2% by Do.
weight of nitromethane.
Isobutane containing 0.01% by Detinning.
weight of nitroethane.
Isobutane containing 0.05% by Do.
weight of nitroethane.
Isobutane containing 0.1% by Do.
weight of nitroethane.
Isobutane containing 0.2% by Do.
weight of nitroethane. Isobutane containing 1% by weight of nitroethane.
Preliminary detinning.
weight of l-nitropropane.
Isobutane containing 1% by weight of l-nitropropane.
Isobutane containing 0.05% by weight of 2-nitropropane.
Isobutane containing 0.1% by weight of 2-nitropropane.
Isobutane containing 0.2% by weight of 2-nitropropane.
Isobutane containing 1% weight of 2-nitropropane.
Isobutane containing 0.01% by weight of vinylidene chloride.
Isobutane containing 0.05% by weight of vinylidene chloride.
Isobutane containing 0.2% by weight of vinylidene chloride.
Isobutane containing 1% by weight of vinylidene chloride.
Isobutane containing 2% by weight of vinylidene chloride.
EXAMPLE Preliminary detinning.
No detinning.
Detinning.
In still further tests, insecticidal formulations containing natural isobutane as propellant were placed in tin- Component: Weight Pyrethrins (20%) 1.00 Piperonyl butoxide 1.25
p,p'-Dichlorodiphenyltrichloroethane 2.00 Arlacel 186 (an emulsifier composed of monoand diglycerides of fatty acids) 0.75 Methylene chloride 10.00 Water 55.00 Isobutane 30.00
The cans were capped and stored for a period of three weeks at a temperature of -F. Upon inspection of the cans after this period, the can containing no inhibitor had detinned whereas the can containing the nitromethane inhibitor showed no detinning.
I claim:
1. A process of inhibiting corrosion of a tin-plated steel aerosol can containing a water-based concentrate and at least one liquefied saturated hydrocarbon having 3 or 4 carbon atoms as propellant which comprises adding to the can about 0.01 to 2% by weight based on the hydrocarbon of nitromethane or 2-nitropropane.
2. A process according to claim 1 in which the hydrocarbon is a natural hydrocarbon.
3. A process according to claim 2 in which the inhibitor is nitromethane.
4. A process according to claim 2 in which the inhibitor is 2-nitropropane.
5. A process according to claim 3 in which the amount of nitromethane is about 0.05 to 0.08% by weight based on the hydrocarbon.
6. A process according to claim 4 in which the amount of 2-nitropropane is about 0.05 to 0.08% by weight based on the hydrocarbon.
International Encyclopedia of Pressurized Packaging (Aerosols), Pergamon Press, ed. by Herzka (1966), page 329.
JOHN D. WELSH, Primary Examiner U.S. Cl. X.R. 252-396, 305
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79657769A | 1969-02-04 | 1969-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3650982A true US3650982A (en) | 1972-03-21 |
Family
ID=25168533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US796577A Expired - Lifetime US3650982A (en) | 1969-02-04 | 1969-02-04 | Process for inhibiting corrosion of tin-plated steel aerosol cans |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3650982A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4584021A (en) * | 1984-12-07 | 1986-04-22 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
| US4597895A (en) * | 1984-12-06 | 1986-07-01 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
| US4600530A (en) * | 1985-03-27 | 1986-07-15 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
-
1969
- 1969-02-04 US US796577A patent/US3650982A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4597895A (en) * | 1984-12-06 | 1986-07-01 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
| US4584021A (en) * | 1984-12-07 | 1986-04-22 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
| US4600530A (en) * | 1985-03-27 | 1986-07-15 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
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