US2512949A - Corrosion inhibitor for metals - Google Patents

Corrosion inhibitor for metals Download PDF

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Publication number
US2512949A
US2512949A US637108A US63710845A US2512949A US 2512949 A US2512949 A US 2512949A US 637108 A US637108 A US 637108A US 63710845 A US63710845 A US 63710845A US 2512949 A US2512949 A US 2512949A
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United States
Prior art keywords
metal objects
corrosion
vapor
volatile compound
metal
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Expired - Lifetime
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US637108A
Inventor
Lieber Eugene
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Nox-Rust Chemical Corp
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Nox-Rust Chemical Corp
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Priority to US637108A priority Critical patent/US2512949A/en
Application granted granted Critical
Publication of US2512949A publication Critical patent/US2512949A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/02Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • Y10S428/923Physical dimension
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31725Of polyamide
    • Y10T428/31779Next to cellulosic
    • Y10T428/31783Paper or wood

Definitions

  • This invention relates to methods for inhibiting corrosion of metals by the corrosive action of water vapor.
  • metal objects are often wrapped or packaged for storing and shipping purposes and many attempts have been made to protect the metal objects from the corrosive action of water vapor by carefully wrapping or packaging the metal objects in moisture-proof wrappers or packages in order to prevent moisture from contacting the metal objects.
  • elaborate schemes of wrapping and packaging have been tried and utilized such as sealing the metal objects in as many as three or four layers of moisture-resistant wrappings.
  • such schemes have not been wholly successful for despite the best efiorts corrosion by the corrosive action of water vapor still takes place.
  • Moisture does seek its way into the interior of the wrapping or package and, also, such schemes do not take into account the water vapor trapped in the wrapping or package when it is sealed.
  • the principal object of this invention is to provide new and improved methods of inhibiting corrosion of metal objects by the corrosive action of water vapor wherein absolute sealing of the metal objects in moistureproof wrappings or packages is not required and wherein moisture trapped in the wrapping or package when it is sealed has no corrosive effect on the metal objects.
  • an object of this invention is to associate with the metal objects to be protected a volatile compound that emits a vapor which deposits a corrosion-inhibiting fihn on the metal objects for preventing Water vapor, which may be present, from corroding the metal objects.
  • a further object of this invention is to treat a fibrous material, such as paper, textile, etc., with a volatile compound that emits a vapor which deposits 9, corrosion inhibiting film on the metal objects to be protected and associating the fibrous material with the metal objects for preventing water vapor from corrodin the metal objects.
  • a fibrous material such as paper, textile, etc.
  • Such fibrous material may be interspersed with the metal objects in a conventional wrapping or package or it may be utilized as a part of the wrapping or package.
  • Another object of this invention is to utilize amines and amino-alcohols as the volatile compound for emitting the vapor which deposits a corrosion inhibiting film on the metal objects to be protected.
  • a fibrous material such as paper, textile, wood, etc.
  • a volatile compound having vapor pressures such that under temperature conditions of use it will emit vapor having corrosion inhibiting characteristics.
  • Amines and aminoalcohols having the desired vapor pressure characteristics have been, in accordance with this invention,'determined to be particularly suitable as the volatile compound for emitting vapor having corrosion inhibiting characteristics.
  • the fibrous material In treating the fibrous material, it is preferably wetted by an alcohol solution containing the amines or amino-alcohols and after drying, upon evaporation of the alcohol solvent, the fibrous material is thoroughly and uniformly provided or impregnated with the resultant amines or aminoalcohols.
  • the fibrous material provided or impregnated with the amines or amino-alcohols emits and continues to emit vapor having corrosion inhibiting characteristics as long as the fibrous material remains coated or impregnated.
  • the amount of impregnation of the fibrous material, and hence the lasting qualities of the volatile compound, a course, depends upon the percentage of amines or amino-alcohols in the original alcohol solution and the degree of wetting of the fibrous material which in turn depends upon the absorptive capacity of the fibrous material and the quantity of alcohol solution applied.
  • paper such as conventional wrapping paper made from wood pulp stock
  • an alcohol solution containing substantially ten per cent monoethanolamine then dried and suificient quantities of vapor have been emitted therefrom to protect a metal object loosel Wrapped therein for a period of weeks with no substantial signs of corrosion of the metal object even though the wrapping was subjected to one hundred per cent relative humidity at F. temperature over that period of time.
  • the ilbrous material provided or impregnated with the volatile compound may be utilized for corrosion inhibiting purposes in various ways.
  • the metal objects to be protected may beand not wasted by emission to the surrounding atmosphere.
  • This outer impervious covering may be a separate covering later applied, or a compound wrapping may be utilized having two laminations, one containing the volatile compound and the other being impervious to the vapors.
  • the laminated covering when stored preparatory to use, may be stacked or rolled so that wasting of the vapors during the storing period may be kept to a minimum by reason of the alternate impervious layers.
  • a single layer 01' fibrous material may be utilized with the same general results if one side of the layer is coated or impregnated with the volatile compound while the other side is provided or impregnated with a material impervious .to the vapors.
  • the invention is applicable to wrappings or packages in sheet form, envelope form -or carton form.
  • the metal objects to be protected may also be wrapped or packaged in the usual manner with -the volatile compound distributed conveniently within the parcel or package so that the vapors emitted therefrom will deposit a corrosion inhibiting film on the metal objects.
  • the volatile compound may be distributed within the parcel or package in solid state in cloth bags or other porous containers or it may be sprinkled between layersof wadding or in some cases sprinkled directly into the package.
  • the package fibrous material referably in strip or sheet form, coated or impregnated with the volatile compound. In this way considerable versatility of application in packaging is made possible.
  • the volatile compound may be distributed therein for emitting vapors to provide a corrosion inhibiting him on said metal inner surfaces.
  • a product for inhibiting corrosion of metal objects comprising, a material provided with a composition consisting essentially of a volatile compound comprising a lower alkylol amine and having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor.
  • a product for inhibiting corrosion of metal objects comprising, a fibrous absorbent material impregnated with a composition consisting essentially of a volatile compound comprising a lower alkvlol amine and having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor.
  • a packaging for inhibiting corrosion of metal objects comprising, a laminated sheet of material for packaging the metal objects, one of the laminations provided with a composition consisting essentially of a lower alkylol amine having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor, the other lamination being a layer which is impervious to vapors.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

Faiented June 27, 1950 CORROSION INHIBITOR FOR METALS Eugene Lieber, Chicago, Ill., assignor to Nox-Rust Chemical Corporation, a corporation of Illinois No Drawing. Application December 22, 1945, Serial No. 637,108
3 Claims. I
This invention relates to methods for inhibiting corrosion of metals by the corrosive action of water vapor.
In manufacturing and commercial practices, metal objects are often wrapped or packaged for storing and shipping purposes and many attempts have been made to protect the metal objects from the corrosive action of water vapor by carefully wrapping or packaging the metal objects in moisture-proof wrappers or packages in order to prevent moisture from contacting the metal objects. In this respect elaborate schemes of wrapping and packaging have been tried and utilized such as sealing the metal objects in as many as three or four layers of moisture-resistant wrappings. However, such schemes have not been wholly successful for despite the best efiorts corrosion by the corrosive action of water vapor still takes place. Moisture does seek its way into the interior of the wrapping or package and, also, such schemes do not take into account the water vapor trapped in the wrapping or package when it is sealed.
The principal object of this invention is to provide new and improved methods of inhibiting corrosion of metal objects by the corrosive action of water vapor wherein absolute sealing of the metal objects in moistureproof wrappings or packages is not required and wherein moisture trapped in the wrapping or package when it is sealed has no corrosive effect on the metal objects.
More specifically, an object of this invention is to associate with the metal objects to be protected a volatile compound that emits a vapor which deposits a corrosion-inhibiting fihn on the metal objects for preventing Water vapor, which may be present, from corroding the metal objects.
A further object of this invention is to treat a fibrous material, such as paper, textile, etc., with a volatile compound that emits a vapor which deposits 9, corrosion inhibiting film on the metal objects to be protected and associating the fibrous material with the metal objects for preventing water vapor from corrodin the metal objects. Such fibrous material may be interspersed with the metal objects in a conventional wrapping or package or it may be utilized as a part of the wrapping or package.
Another object of this invention is to utilize amines and amino-alcohols as the volatile compound for emitting the vapor which deposits a corrosion inhibiting film on the metal objects to be protected.
In accordance with this invention a fibrous material, such as paper, textile, wood, etc., is treated with a volatile compound having vapor pressures such that under temperature conditions of use it will emit vapor having corrosion inhibiting characteristics. Amines and aminoalcohols having the desired vapor pressure characteristics have been, in accordance with this invention,'determined to be particularly suitable as the volatile compound for emitting vapor having corrosion inhibiting characteristics.
In treating the fibrous material, it is preferably wetted by an alcohol solution containing the amines or amino-alcohols and after drying, upon evaporation of the alcohol solvent, the fibrous material is thoroughly and uniformly provided or impregnated with the resultant amines or aminoalcohols. The fibrous material provided or impregnated with the amines or amino-alcohols emits and continues to emit vapor having corrosion inhibiting characteristics as long as the fibrous material remains coated or impregnated.
The amount of impregnation of the fibrous material, and hence the lasting qualities of the volatile compound, a course, depends upon the percentage of amines or amino-alcohols in the original alcohol solution and the degree of wetting of the fibrous material which in turn depends upon the absorptive capacity of the fibrous material and the quantity of alcohol solution applied.
From an economic viewpoint it is generally desirable to utilize the least amount of volatile compound which will provide adequate protection against corrosion for the desired length of time and, of course, the amount of volatile compound, coating or impregnating the fibrous material, may be varied to suit the various applications.
For example, paper, such as conventional wrapping paper made from wood pulp stock, has been completely wetted with an alcohol solution containing substantially ten per cent monoethanolamine, then dried and suificient quantities of vapor have been emitted therefrom to protect a metal object loosel Wrapped therein for a period of weeks with no substantial signs of corrosion of the metal object even though the wrapping was subjected to one hundred per cent relative humidity at F. temperature over that period of time.
Other alcohol solutions of amines and aminoalcohols having substantially the same percentages have been similarly tried and tested with substantially the same results. Among the amines and amino-alcohols so tried and successfully 3 tested are ethyl diethanolamine, butyl monoethanolamine, ethyl monoethanolamine, butyl diethanolamine and di-n-butylamino ethanol.
The ilbrous material provided or impregnated with the volatile compound may be utilized for corrosion inhibiting purposes in various ways.
The metal objects to be protected may beand not wasted by emission to the surrounding atmosphere. This outer impervious covering may be a separate covering later applied, or a compound wrapping may be utilized having two laminations, one containing the volatile compound and the other being impervious to the vapors. In the latter case, the laminated covering, when stored preparatory to use, may be stacked or rolled so that wasting of the vapors during the storing period may be kept to a minimum by reason of the alternate impervious layers.
Instead of the laminated construction just described a single layer 01' fibrous material may be utilized with the same general results if one side of the layer is coated or impregnated with the volatile compound while the other side is provided or impregnated with a material impervious .to the vapors.
Obviously, the invention is applicable to wrappings or packages in sheet form, envelope form -or carton form.
The metal objects to be protected may also be wrapped or packaged in the usual manner with -the volatile compound distributed conveniently within the parcel or package so that the vapors emitted therefrom will deposit a corrosion inhibiting film on the metal objects. The volatile compound may be distributed within the parcel or package in solid state in cloth bags or other porous containers or it may be sprinkled between layersof wadding or in some cases sprinkled directly into the package.
For ease of handling, uniform distribution, and proximity of the volatile compound to the surface of the metal objects, it may be desirable to distribute in the package fibrous material, referably in strip or sheet form, coated or impregnated with the volatile compound. In this way considerable versatility of application in packaging is made possible.
If it be desired to protect metal inner surfaces of normally closed devices, such as for example in engine blocks, gear casings, measuring instruments, clocks, radio chassis and the like, the volatile compound may be distributed therein for emitting vapors to provide a corrosion inhibiting him on said metal inner surfaces.
Since the volatile compounds emit a, vapor which deposits a corrosion inhibiting illm on the -metal objects or the presence of water vapor within the wrapping or package has no appreciable corrosive action on the metal objects or parts. It is therefore not necessary to seal the metal objects or parts from moisture as has been done in the past. It is only necessary to prevent entry into the package or parcel of considerable quantities of water and water vapor. In accordance with this invention corrosion prevention depends on inhibition of the corrosive action of the water vapor which gains access to the package or parcel rather than on complete exclusion of water vapor therefrom.
By ,this invention, therefore, corrosion prevention and packaging and wrapping are greatly simplified and cheapened.
Although the invention has been described with certain illustrative embodiments, it will be apparent that changes and modifications may be readily made without departing from the spirit and scope of this invention and, therefore, this invention is to be limited only by the scope of the appended claims and prior art.
I claim as my invention:
1. A product for inhibiting corrosion of metal objects comprising, a material provided with a composition consisting essentially of a volatile compound comprising a lower alkylol amine and having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor.
2. A product for inhibiting corrosion of metal objects comprising, a fibrous absorbent material impregnated with a composition consisting essentially of a volatile compound comprising a lower alkvlol amine and having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor.
3. A packaging for inhibiting corrosion of metal objects comprising, a laminated sheet of material for packaging the metal objects, one of the laminations provided with a composition consisting essentially of a lower alkylol amine having a vapor pressure to emit at temperatures of use a metal corrosion inhibiting vapor, the other lamination being a layer which is impervious to vapors. EUGENE LJEBER.
REFERENCES CITED The following references are of record in th file of this patent:
UNITED STATES PATENTS Walb Oct. 19, 1948 Y .Awwii

Claims (1)

1. A PRODUCT FOR INHIBITING CORROSION OF METAL OBJECTS COMPRISING, A MATERIAL PROVIDED WITH A COMPOSITION CONSISTING ESSENTIALLY OF A VOLATILE COMPOUND COMPRISING A LOWER ALKYLOL AMINE AND HAVING A VAPOR PRESSURE TO EMIT AT TEMPERATURES OF USE A METAL CORROSION INHIBITING VAPOR.
US637108A 1945-12-22 1945-12-22 Corrosion inhibitor for metals Expired - Lifetime US2512949A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629649A (en) * 1949-10-31 1953-02-24 Shell Dev Vapor-phase corrosion inhibitor
US2662808A (en) * 1949-05-02 1953-12-15 Shell Dev Corrosion inhibition with nitrobenzaldehydes
US2717196A (en) * 1950-02-25 1955-09-06 Shell Dev Sheet wrapping material containing nitro-phenol compound
US2739872A (en) * 1950-09-15 1956-03-27 Daubert Chemical Co Composition and sheet material for inhibition of corrosion of metals
US2832742A (en) * 1954-06-09 1958-04-29 Alox Corp Corrosion inhibitor composition
US2956889A (en) * 1956-02-06 1960-10-18 Dearborn Chemicals Co Corrosion inhibition
US3280029A (en) * 1964-06-18 1966-10-18 Mobil Oil Corp Lubricant compositions
US3296020A (en) * 1964-08-27 1967-01-03 Bibb Mfg Co Process for producing antistatic characteristic in nylon fibers
US3372009A (en) * 1964-06-18 1968-03-05 Mobil Oil Corp Liquid fuel compositions containing as anti-corrosion agent an alkyl monoalkanol amino compound
US3519458A (en) * 1966-03-01 1970-07-07 Hooker Chemical Corp Method for reducing the corrosion susceptibility of ferrous metal having fluxing agent residue
US3897349A (en) * 1973-05-29 1975-07-29 Exxon Research Engineering Co Anti-rust additive composition
US4116701A (en) * 1977-03-08 1978-09-26 Conner Alvin James Sen Metal corrosion inhibitor
US4137206A (en) * 1977-02-14 1979-01-30 New World Products, Inc. Tire protection composition
US4275835A (en) * 1979-05-07 1981-06-30 Miksic Boris A Corrosion inhibiting articles
US4834895A (en) * 1987-08-17 1989-05-30 The Procter & Gamble Company Articles and methods for treating fabrics in clothes dryer

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US213100A (en) * 1879-03-11 Improvement in preparing paper and other fabrics and materials for protecting metals
US223814A (en) * 1880-01-27 Preparing paper and other fabrics and materials for wrapping silver and other metals
US721171A (en) * 1902-06-16 1903-02-24 Franz Flor Wrapping material for preventing tarnishing of metal articles.
US1387132A (en) * 1921-08-09 Tional silver co
US1847711A (en) * 1928-09-11 1932-03-01 Du Pont Noncorrosive alcoholic solution
US2051170A (en) * 1933-11-29 1936-08-18 Newark Paraffine & Parchment P Wrapping material for an edible product
US2071625A (en) * 1931-06-03 1937-02-23 W E Long Co Preservation of packaged food products
US2156357A (en) * 1936-05-18 1939-05-02 Harold N Simpson Rust preventive packaging for iron sheets and the like
US2283931A (en) * 1940-03-21 1942-05-26 Ernest R Irwin Rust preventive compound
US2333206A (en) * 1939-05-13 1943-11-02 Du Pont Protection of ferrous metals against corrosion
US2362332A (en) * 1940-06-29 1944-11-07 Standard Oil Dev Co Corrosion preventive compositions
US2451523A (en) * 1945-06-30 1948-10-19 Thomas A Walb Corrosion inhibitor

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US213100A (en) * 1879-03-11 Improvement in preparing paper and other fabrics and materials for protecting metals
US223814A (en) * 1880-01-27 Preparing paper and other fabrics and materials for wrapping silver and other metals
US1387132A (en) * 1921-08-09 Tional silver co
US721171A (en) * 1902-06-16 1903-02-24 Franz Flor Wrapping material for preventing tarnishing of metal articles.
US1847711A (en) * 1928-09-11 1932-03-01 Du Pont Noncorrosive alcoholic solution
US2071625A (en) * 1931-06-03 1937-02-23 W E Long Co Preservation of packaged food products
US2051170A (en) * 1933-11-29 1936-08-18 Newark Paraffine & Parchment P Wrapping material for an edible product
US2156357A (en) * 1936-05-18 1939-05-02 Harold N Simpson Rust preventive packaging for iron sheets and the like
US2333206A (en) * 1939-05-13 1943-11-02 Du Pont Protection of ferrous metals against corrosion
US2283931A (en) * 1940-03-21 1942-05-26 Ernest R Irwin Rust preventive compound
US2362332A (en) * 1940-06-29 1944-11-07 Standard Oil Dev Co Corrosion preventive compositions
US2451523A (en) * 1945-06-30 1948-10-19 Thomas A Walb Corrosion inhibitor

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662808A (en) * 1949-05-02 1953-12-15 Shell Dev Corrosion inhibition with nitrobenzaldehydes
US2629649A (en) * 1949-10-31 1953-02-24 Shell Dev Vapor-phase corrosion inhibitor
US2717196A (en) * 1950-02-25 1955-09-06 Shell Dev Sheet wrapping material containing nitro-phenol compound
US2739872A (en) * 1950-09-15 1956-03-27 Daubert Chemical Co Composition and sheet material for inhibition of corrosion of metals
US2832742A (en) * 1954-06-09 1958-04-29 Alox Corp Corrosion inhibitor composition
US2956889A (en) * 1956-02-06 1960-10-18 Dearborn Chemicals Co Corrosion inhibition
US3280029A (en) * 1964-06-18 1966-10-18 Mobil Oil Corp Lubricant compositions
US3372009A (en) * 1964-06-18 1968-03-05 Mobil Oil Corp Liquid fuel compositions containing as anti-corrosion agent an alkyl monoalkanol amino compound
US3296020A (en) * 1964-08-27 1967-01-03 Bibb Mfg Co Process for producing antistatic characteristic in nylon fibers
US3519458A (en) * 1966-03-01 1970-07-07 Hooker Chemical Corp Method for reducing the corrosion susceptibility of ferrous metal having fluxing agent residue
US3897349A (en) * 1973-05-29 1975-07-29 Exxon Research Engineering Co Anti-rust additive composition
US4137206A (en) * 1977-02-14 1979-01-30 New World Products, Inc. Tire protection composition
US4116701A (en) * 1977-03-08 1978-09-26 Conner Alvin James Sen Metal corrosion inhibitor
US4275835A (en) * 1979-05-07 1981-06-30 Miksic Boris A Corrosion inhibiting articles
US4834895A (en) * 1987-08-17 1989-05-30 The Procter & Gamble Company Articles and methods for treating fabrics in clothes dryer

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