US3294694A - Corrosion preventive composition - Google Patents
Corrosion preventive composition Download PDFInfo
- Publication number
- US3294694A US3294694A US438764A US43876465A US3294694A US 3294694 A US3294694 A US 3294694A US 438764 A US438764 A US 438764A US 43876465 A US43876465 A US 43876465A US 3294694 A US3294694 A US 3294694A
- Authority
- US
- United States
- Prior art keywords
- volume
- acid
- corrosion
- formal
- dipropargyl
- 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 31
- 238000005260 corrosion Methods 0.000 title claims description 24
- 230000007797 corrosion Effects 0.000 title claims description 23
- 230000003449 preventive effect Effects 0.000 title description 7
- 239000002253 acid Substances 0.000 claims description 28
- YFIBSNDOVCWPBL-UHFFFAOYSA-N hexa-1,5-diyne Chemical compound C#CCCC#C YFIBSNDOVCWPBL-UHFFFAOYSA-N 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 230000002401 inhibitory effect Effects 0.000 claims description 7
- 239000011260 aqueous acid Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 description 19
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 description 13
- 150000007513 acids Chemical class 0.000 description 9
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 229910000640 Fe alloy Inorganic materials 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 2
- STMRWVUTGPZZER-UHFFFAOYSA-N 2,3-bis(2-methylpropyl)phenol Chemical compound CC(C)CC1=CC=CC(O)=C1CC(C)C STMRWVUTGPZZER-UHFFFAOYSA-N 0.000 description 1
- RNAMYOYQYRYFQY-UHFFFAOYSA-N 2-(4,4-difluoropiperidin-1-yl)-6-methoxy-n-(1-propan-2-ylpiperidin-4-yl)-7-(3-pyrrolidin-1-ylpropoxy)quinazolin-4-amine Chemical compound N1=C(N2CCC(F)(F)CC2)N=C2C=C(OCCCN3CCCC3)C(OC)=CC2=C1NC1CCN(C(C)C)CC1 RNAMYOYQYRYFQY-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 244000303040 Glycyrrhiza glabra Species 0.000 description 1
- 244000305267 Quercus macrolepis Species 0.000 description 1
- 235000016976 Quercus macrolepis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010042618 Surgical procedure repeated Diseases 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- -1 alkylpyridines Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- OOHAUGDGCWURIT-UHFFFAOYSA-N n,n-dipentylpentan-1-amine Chemical compound CCCCCN(CCCCC)CCCCC OOHAUGDGCWURIT-UHFFFAOYSA-N 0.000 description 1
- JACMPVXHEARCBO-UHFFFAOYSA-N n-pentylpentan-1-amine Chemical compound CCCCCNCCCCC JACMPVXHEARCBO-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 150000003139 primary aliphatic amines Chemical class 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 1
- 150000003510 tertiary aliphatic amines Chemical class 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
-
- 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- 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
- C23G1/088—Iron or steel solutions containing organic acids
Definitions
- propargyl alcohol is an excellent corrosion inhibitor for acid solutions. It is also known that a synergistic corrosion inhibitor can be obtained by employing as the inhibitor a mixture of propargyl alcohol and an amine such as pyridine, tributylamine, etc. The activity of the amineand propargyl alcohol is effectively synergized when the amine is employed in amounts of from 10% to 90% by volume of the inhibitor composition.
- a further object is to provide a process for inhibiting the corrosion of various metals, such as iron, steel, nickel and ferrous alloys when in contact with corrosive acids.
- a synergistic corrosion inhibiting composition is obtained by employing as the inhibitor a mixture of 95% by volume of propargy-l alcohol and 5% by volume of dipropaugyl formal.
- the inhibitor mixture is used at a level ranging from 0.00 l1.% by volume based on the volume of the aqueous acid solution in which the acid concentration ranges from 1 to by weight.
- the acids include acetic, hydrochloric, phosphoric, sulfuric, and other non-oxidizing acids.
- the dipropargyl formal in the inhibitor mixture has the following formula:
- the dipropargyl formal per se is insoluble in water, but when present in an amount up to 5% by volume in propargyl alcohol, the mixture is soluble in water at a 1% concentration and also soluble at the same concentration in the foregoing acids .and aqueous solutions thereof.
- Aqueous solutions of such acids usually contain from 1 to 15 by weight of acid to which the inhibitor mixture is added in the ice aforestated amounts to yield the corrosion preventive composition.
- the corrosion preventive composition of the present invention will inhibit the corrosion of various metals such as iron, steel, nickel and ferrous alloys when in contact with said composition.
- The-corrosion preventive composition is ideal for use in metal-pickling, metal cleaning and polishing baths, boiler cleaning and as corrosion inhibitor of oil-well casing and tubing.
- the inhibitor mixture of the present invention is effective at a temperature ranging from room to 212 F.
- the limit of the latter temperature is dependent on the concentration of the acid used in practical application or in the test, the more dilute the acid, i.e., at about 5% concentration, the higher the temperature limit of the inhibitor mixture. i
- An aqueous solution consisting essentially of an aqueous solution of a non-oxidizing acid, having an acid concentration of from 1 to 15% by weight and from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
- a corrosion inhibited mineral acid consisting essentially of an aqueous solution of mineral acid in a concentration of from 1 to 15% by Weight and containing from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
- a corrosion inhibited aqueous hydrochloric acid solution consisting of from 1 to 15 by weight of hydrochloric acid inhibited against corrosion by the addition thereto of from 0.001 to 1.0% by volume of a composition consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
- a process for inhibiting the corrosion of a metal of the group consisting of iron, steel, nickel and ferrous alloys by aqueous mineral acid in a concentration of from 1 to 15 .by Weight in contact therewith, which consists of maintaining in said acid from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
United States Patent 3,294,694 CORRGSION PREVENTIVE COMPOSITIQN Andrew S. Wood and David E. Gensheimer, Paducah, Ky assignors to General Aniline & Film Corporation, NWY0i'k, N.Y., a corporation of Delaware No Drawing. Filed Mar. 10, 1965, Ser. No. 438,764 1 6 Claims. (Cl. 252-146) The invention relates to an improved corrosion preventive composition for use in non-oxidizing acid solutions to decrease the corrosion of metal in contact with said solutions.
Itis known. that propargyl alcohol is an excelent corrosion inhibitor for acid solutions. It is also known that a synergistic corrosion inhibitor can be obtained by employing as the inhibitor a mixture of propargyl alcohol and an amine such as pyridine, tributylamine, etc. The activity of the amineand propargyl alcohol is effectively synergized when the amine is employed in amounts of from 10% to 90% by volume of the inhibitor composition.
It is the principal object of the present invention to provide a corrosion preventive composition which inhibits the corrosion of various metals in contact with corrosive acids.
A further object is to provide a process for inhibiting the corrosion of various metals, such as iron, steel, nickel and ferrous alloys when in contact with corrosive acids.
.Other objects and advantages will become manifest from the following description.
We have found that a synergistic corrosion inhibiting composition is obtained by employing as the inhibitor a mixture of 95% by volume of propargy-l alcohol and 5% by volume of dipropaugyl formal. The inhibitor mixture is used at a level ranging from 0.00 l1.% by volume based on the volume of the aqueous acid solution in which the acid concentration ranges from 1 to by weight.
Various acids, especially the mineral acids, are effectively inhibited against metal corrosion by employing the inhibitor mixture. The acids include acetic, hydrochloric, phosphoric, sulfuric, and other non-oxidizing acids.
The dipropargyl formal in the inhibitor mixture has the following formula:
H O( OCHZCECH 2 and is prepared by the following procedure:
P-ropargyl alcohol (450 grams, 8 moles), s-trioxymethylene (90 grams, 1 mole), benzene (150 grams) and Dowex 50 (H form) are refluxed in a 1-liter flask equipped with a Barrett water trap. When the ternary azeotrope breaks, the lower layer containing propargyl alcohol and water is removed and the water content measured periodically. After the theoretical amount of water has been removed, the reaction mixture is subjected to fractional distillation. The portion boiling at 110- 111 C./ 100 mm. Hg is isolated. The yield of pure dipropargyl formal (B.P. 172.5 C./ 760 mm. 12 1.4440, Sp. Gr. -0.9 87) is 260 grams or about 70% of theoretical.
The dipropargyl formal per se is insoluble in water, but when present in an amount up to 5% by volume in propargyl alcohol, the mixture is soluble in water at a 1% concentration and also soluble at the same concentration in the foregoing acids .and aqueous solutions thereof. The inhibitor mixture is soluble in various concentractions of non-oxidizing acids, even commercial hydroch=loric acid of about 37% strength. Aqueous solutions of such acids usually contain from 1 to 15 by weight of acid to which the inhibitor mixture is added in the ice aforestated amounts to yield the corrosion preventive composition.
The corrosion preventive composition of the present invention will inhibit the corrosion of various metals such as iron, steel, nickel and ferrous alloys when in contact with said composition. The-corrosion preventive composition is ideal for use in metal-pickling, metal cleaning and polishing baths, boiler cleaning and as corrosion inhibitor of oil-well casing and tubing.
The inhibitor mixture of the present invention is effective at a temperature ranging from room to 212 F. The limit of the latter temperature is dependent on the concentration of the acid used in practical application or in the test, the more dilute the acid, i.e., at about 5% concentration, the higher the temperature limit of the inhibitor mixture. i
In order to demonstrate the eifectiveness of our inhibitor mixture, a series of tests was Fill). in which 0.4% by volume of the inhibitor mixture was put into a 15 by weight of aqueous solution'of hydrochloric acid held at 200 F. and a N- steel coupon, previously pickled, cleaned, dried and weighed was suspended in the acid for 16 hours. As controls, 0.4% by volume of each of propargyl alcohol and a dipropargyl formal were placed separately in the same acid and the procedure repeated. The coupons were then washed, dried and reweighed to determine the appearance and the amount of metal dissolved by the acid. This was calculated as milligrams of weight loss. Results of these tests are shown in I 108.8 Slight pitting. Dipropargyl formal 82.2 Clean. Inhibitor mixture by olume of propargyl alcohol and 5% by volume of dipropargyl formal) 70 Clean.
From the foregoing results, it is clearly evident that inhibitor mixture is far superior to propargyl alcohol. In view of this finding, we prepared the acetal and the acetaldehyde of propargyl alcohol and found that results paralleling those for dipropargyl formal shown in Table 1 were obtained under the same test. Improved results were obtained when the dipropargyl formal was dispersed in the aqueous acid by means of an ionic or non-ionic surface active agent that is stable in aqueous non-oxidizin g acid. The ratio of formal should be 3 parts to 1 part of surfactant, our preference being non-ionic surfactants obtained by the condensation of 1 mole of diisobutyl phenol with 6 to 10 moles of ethylene oxide.
Improved results are also obtained when the inhibitor mixture is blended with a quaternized N-heterocyclic base and the preferred surfactant in the ratio of 5:4:1 parts by weight, respectively. Representative of such bases are those disclosed in US. Patents 2,037,762; 2,080,553; 2,403,153; 2,606,873; and 2,814,593. In lieu of such bases, various amines or mixtures thereof, such as primary, secondary or tertiary aliphatic amines, i.e., butylamine, dibutylamine, tributylamine, amylamine, diamylamine, triamylamine, etc., heterocyolic amines, i.e., alkylpyridines, preferably those known as alkylpyridines =HB, a commercially available mixture of alkylated pyridines having an average molecular Weight of 170, may be used to yield improved results.
We claim:
1. An aqueous solution consisting essentially of an aqueous solution of a non-oxidizing acid, having an acid concentration of from 1 to 15% by weight and from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
2. A corrosion inhibited mineral acid consisting essentially of an aqueous solution of mineral acid in a concentration of from 1 to 15% by Weight and containing from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
3. A corrosion inhibited aqueous hydrochloric acid solution consisting of from 1 to 15 by weight of hydrochloric acid inhibited against corrosion by the addition thereto of from 0.001 to 1.0% by volume of a composition consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
4. A process [for inhibiting the corrosion of a metal of the group consisting of iron, steel, nickel and ferrous alloys by aqueous mineral acid in a concentration of from 1 to 15 .by Weight in contact therewith, which consists of maintaining in said acid from 0.001 to 1.0% by volume based on the volume of said aqueous acid of a corrosion inhibiting mixture consisting of 95% by volume of propargyl alcohol and 5% by volume of dipropargyl formal.
References Cited by the Examiner UNITED STATES PATENTS 8/1951 Fahnoe 260-6 15 XR 4/1962 Oakes 252-146 XR 10/1963 Harrison et a1. 252-146 XR FOREIGN PATENTS 12/1963 Canada.
OTHER REFERENCES Acetylenic Corrosion Inhibitors, Industrial and Engineering Chemistry, vol. 51, No. 7, July 1959, pages SAMUEL H. BLECH, Primary Examiner.
ALBERT T. MEYERS, Examiner.
S. E. DARDEN, Assistant Examiner.
Claims (1)
1. AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF A NON-OXIDIZING ACID, HAVING AN ACID CONCENTRATION OF FROM 1 TO 15% BY WEIGHT AND FROM 0.001 TO 1.0% BY VOLUME BASED ON THE VOLUME OF SAID AQUEOUS ACID OF A CORROSION INHIBITING MIXTURE CONSISTING OF 95% BY VOLUME OF PROPRGYL ALCOHOL AND 5% BY VOLUME OF DIPROPARGYL FORMAL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US438764A US3294694A (en) | 1965-03-10 | 1965-03-10 | Corrosion preventive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US438764A US3294694A (en) | 1965-03-10 | 1965-03-10 | Corrosion preventive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3294694A true US3294694A (en) | 1966-12-27 |
Family
ID=23741911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US438764A Expired - Lifetime US3294694A (en) | 1965-03-10 | 1965-03-10 | Corrosion preventive composition |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3294694A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3404094A (en) * | 1965-09-07 | 1968-10-01 | Halliburton Co | Corrosion inhibitor composition |
| US4670186A (en) * | 1982-12-17 | 1987-06-02 | Petrolite Corporation | Acid inhibitor composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563325A (en) * | 1951-08-07 | Acetalsof propargyt abc | ||
| US3030311A (en) * | 1959-08-24 | 1962-04-17 | Dow Chemical Co | Mineral acid inhibitors |
| US3107221A (en) * | 1958-04-18 | 1963-10-15 | Dow Chemical Co | Corrosion inhibitor composition |
| CA675288A (en) * | 1963-12-03 | Alvin F. Beale, Jr. | Corrosion inhibitors for aqueous acids |
-
1965
- 1965-03-10 US US438764A patent/US3294694A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563325A (en) * | 1951-08-07 | Acetalsof propargyt abc | ||
| CA675288A (en) * | 1963-12-03 | Alvin F. Beale, Jr. | Corrosion inhibitors for aqueous acids | |
| US3107221A (en) * | 1958-04-18 | 1963-10-15 | Dow Chemical Co | Corrosion inhibitor composition |
| US3030311A (en) * | 1959-08-24 | 1962-04-17 | Dow Chemical Co | Mineral acid inhibitors |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3404094A (en) * | 1965-09-07 | 1968-10-01 | Halliburton Co | Corrosion inhibitor composition |
| US4670186A (en) * | 1982-12-17 | 1987-06-02 | Petrolite Corporation | Acid inhibitor composition |
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