US4022711A
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Catalyzed hydrazine compound corrosion inhibiting composition containing a complex of metal salt and amino derivative of carboxylic acid, and a quinone compound
Assignee: Olin Corp
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Filing: 1976-02-24
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Granted: 1977-05-10
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Expires: 1996-02-24
Abstract
Abstract Corrosion inhibiting compositions are described which contain a hydrazine compound, an organometallic complex and a quinone compound. The organometallic complex is the reaction product of a cobaltous, manganous, or cupric inorganic salt and one or more ligands comprising amino derivatives of carboxylic acids or salts. The quinone compound is one which renders the composition compatible with chelating phosphonate scale control agents. The use of these compositions as oxygen scavengers in corrosive environments is also described.
Inventors
- 👤 Manfred G. Noack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:54
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/14; C23; C23F; C23F11/00; C23F11/08
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
107 words
A composition, comprising: a. a hydrazine compound: b. about 0.002 parts to about 0.04 parts by weight of an organometallic complex per part of hydrazine compound, said organometallic complex being the reaction product of: i. an inorganic salt selected from the group consisting of cobaltous, manganous, and cupric salts; and ii. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substituents are inert and salts of said unsubstituted and substituted derivatives; and c. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 2
Dependent Claim
107 words
A composition, comprising: a. a hydrazine compound: b. about 0.002 parts to about 0.04 parts by weight of an organometallic complex per part of hydrazine compound, said organometallic complex being the reaction product of: i. an inorganic salt selected from the group consisting of cobaltous, manganous, and cupric salts; and ii. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substituents are inert and salts of said unsubstituted and substituted derivatives; and c. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 3
Dependent Claim
36 words
The composition of claim 1 wherein said inorganic salt has the formula: MX.sub.(2/n) (I) wherein M is a cobaltous or manganous metal ion, X is an inorganic anion, and n is the charge of the anion.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said hydrazine compound is in anhydrous form.
Claim 5
Dependent Claim
37 words
The composition of claim 1 wherein said hydrazine compound is in an aqueous solution containing about 5 to about 64 percent hydrazine compound by weight, based on the total weight of the water and the hydrazine compound.
Claim 6
Dependent Claim
26 words
The composition of claim 1 wherein about 0.005 parts to about 0.02 parts by weight of the organometallic complex is used per part of hydrazine compound.
Claim 7
Dependent Claim
141 words
The composition of claim 5 wherein said organometallic complex is the reaction product of an inorganic salt as recited, and one or more ligands having one of the formulas: ##STR10## wherein A is a branched or straight chain alkylene biradical having about 1 to about 10 carbon atoms; B is hydrogen or any suitable cation which is capable of being replaced by cobaltous, manganous, or cupric ion; and R 1 and R 2 are each independently selected from the group consisting of hydrogen, lower alkyls, aryls, the radical: ##STR11## wherein A and B are defined above, and the radical: ##STR12## wherein each A and B are independently selected for the groups defined for A and B respectively; and ##STR13## wherein Y is a substituted or unsubstituted ortho arylene biradical; and wherein B, R 1 and R 2 are as defined above.
Claim 8
Dependent Claim
26 words
The composition of claim 1 wherein about 0.005 parts to about 0.02 parts by weight of the quinone compound is used per part of hydrazine compound.
Claim 9
Dependent Claim
22 words
The composition of claim 7 wherein the quinone compound is para-quinone, a para-hydroquinone, a para-naphthoquinone, a para-anthraquinone or a substituted derivative thereof.
Claim 10
Dependent Claim
39 words
The composition of claim 8 wherein said hydrazine compound is in an organic solvent solution containing about 5 to about 40 percent hydrazine compound by weight, based on the total weight of the organic solvent and the hydrazine compound.
Claim 11
Dependent Claim
29 words
The composition of claim 8 wherein said organometallic complex is the reaction product of an inorganic salt as recited, and one or more ligands represented by Formula (II) above.
Claim 12
Dependent Claim
80 words
The composition of claim 10 wherein the ligand is one having the structure of Formula (II) above wherein A has 1 to 3 carbon atoms, and R 1 and R 2 are each independently selected from the group consisting of hydrogen, alkyls having 1 to 4 carbon atoms and the radicals of Formulas (III) and (IV) above wherein A has 1 to 3 carbon atoms and wherein the quinone compound is a lower alkyl para-quinone or a lower alkyl para-hydroquinone.
Claim 13
Dependent Claim
38 words
The composition of claim 1 wherein the organic ligand for said organometallic complex is selected from the group consisting of glycine, nitrilotriacetic acid, ethylene diamine tetraacetic acid, and their salts and wherein the quinone compound is methyl hydroquinone.
Claim 14
Independent Claim
129 words
A method of treating a fluidic corrosive environment to remove oxygen therefrom and inhibit corrosion therein, which comprises: treating said environment with a composition comprising: a. a hydrazine compound; b. about 0.002 parts to about 0.04 parts by weight of an organometallic complex per part of hydrazine compound, said organometallic complex being the reaction product of: i. an inorganic salt selected from the group consisting of cobaltous, manganous, and cupric salts; and ii. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substitutents are inert and salts of said unsubstituted and substituted derivatives; and c. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 15
Independent Claim
129 words
A method of treating a fluidic corrosive environment to remove oxygen therefrom and inhibit corrosion therein, which comprises: treating said environment with a composition comprising: a. a hydrazine compound; b. about 0.002 parts to about 0.04 parts by weight of an organometallic complex per part of hydrazine compound, said organometallic complex being the reaction product of: i. an inorganic salt selected from the group consisting of cobaltous, manganous, and cupric salts; and ii. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substitutents are inert and salts of said unsubstituted and substituted derivatives; and c. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 16
Dependent Claim
37 words
The method of claim 12 wherein said inorganic salt has the formula: MX.sub.(2/n) (I) wherein M is a cobaltous, manganous, or cupric metal ion, X is an inorganic anion, and n is the charge of the anion.
Claim 17
Dependent Claim
13 words
The method of claim 14 wherein said hydrazine compound is in anhydrous form.
Claim 18
Dependent Claim
37 words
The method of claim 13 wherein said hydrazine compound is in an aqueous solution containing about 5 to about 64 percent hydrazine compound by weight, based on the total weight of the water and the hydrazine compound.
Claim 19
Dependent Claim
26 words
The method of claim 13 wherein about 0.005 parts to about 0.02 parts by weight of the organometallic complex is used per part of hydrazine compound.
Claim 20
Dependent Claim
140 words
The method of claim 17 wherein said organometallic complex is the reaction product of an inorganic salt as recited, and one or more ligands having the formula: ##STR14## wherein A is a branched or straight chain alkylene biradical having about 1 to about 10 carbon atoms; B is hydrogen or any suitable cation which is capable of being replaced by cobaltous, manganous, or cupric ion; and R 1 and R 2 are each independently selected from the group consisting of hydrogen, lower alkyls, aryls, the radical: ##STR15## wherein A and B are as defined above, and the radical: ##STR16## wherein each A and B are independently selected for the groups defined for A and B respectively; and ##STR17## wherein Y is a substituted or unsubstituted ortho arylene biradical, and wherein B, R 1 and R 2 are as defined above.
Claim 21
Dependent Claim
39 words
The method of claim 18 wherein said hydrazine compound is in an organic solvent solution containing about 5 to about 40 percent hydrazine compound by weight, based on the total weight of the organic solvent and the hydrazine compound.
Claim 22
Dependent Claim
29 words
The method of claim 18 wherein said organometallic complex is the reaction product of an inorganic salt as recited, and one or more ligands represented by Formulas (II) above.
Claim 23
Dependent Claim
80 words
The method of claim 20 wherein the ligand is one having the structure of Formula (II) above wherein A has 1 to 3 carbon atoms, and R 1 and R 2 are each independently selected from the group consisting of hydrogen, alkyls having 1 to 4 carbon atoms and the radicals of Formulas (III) and (IV) above wherein A has 1 to 3 carbon atoms and wherein the quinone compound is a lower alkyl para-quinone or a lower alkyl para-hydroquinone.
Claim 24
Dependent Claim
38 words
The method of claim 13 wherein the organic ligand for said organometallic complex is selected from the group consisting of glycine, nitrilotriacetic acid, ethylene diamine tetraacetic acid, and their salts and wherein the quinone compound is methyl hydroquinone.
Claim 25
Independent Claim
178 words
The method of treating a fluidic corrosive environment to remove oxygen therefrom and inhibit corrosion therein, which comprises: adding the following components to said environment: a. a hydrazine compound in at least about a stoichiometric amount, based on the amount of oxygen to be removed; b. an inorganic salt having the formula: MX.sub.(2/n) (I) wherein M is a cobaltous, manganous, or cupric metal ion, X is an inorganic ion, and n is the charge of the ion; c. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substituents are inert and salts of said unsubstituted and substituted derivatives, and wherein about 0.1 to about 10 moles of ligand are used per gram-atom of metal ion and wherein from about 0.002 parts to about 0.04 parts by weight of total organic ligand and inorganic salt are used per part of said hydrazine compound; and d. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 26
Independent Claim
178 words
The method of treating a fluidic corrosive environment to remove oxygen therefrom and inhibit corrosion therein, which comprises: adding the following components to said environment: a. a hydrazine compound in at least about a stoichiometric amount, based on the amount of oxygen to be removed; b. an inorganic salt having the formula: MX.sub.(2/n) (I) wherein M is a cobaltous, manganous, or cupric metal ion, X is an inorganic ion, and n is the charge of the ion; c. at least one organic ligand selected from the group consisting of unsubstituted amino derivatives of carboxylic acids, substituted amino derivatives of carboxylic acids wherein the substituents are inert and salts of said unsubstituted and substituted derivatives, and wherein about 0.1 to about 10 moles of ligand are used per gram-atom of metal ion and wherein from about 0.002 parts to about 0.04 parts by weight of total organic ligand and inorganic salt are used per part of said hydrazine compound; and d. about 0.001 parts to about 0.05 parts by weight of a quinone compound per part of hydrazine compound.
Claim 27
Dependent Claim
16 words
The method of claim 23 wherein each of said components are added separately to said environment.
Claim 28
Dependent Claim
22 words
The method of claim 23 wherein said organic ligand and said hydrazine compound are combined prior to being added to said environment.
Claim 29
Dependent Claim
22 words
The method of claim 23 wherein said inorganic salt and said hydrazine compound are combined prior to being added to said environment.
Claim 30
Dependent Claim
22 words
The method of claim 23 wherein said inorganic salt and said organic ligand are combined prior to being added to said environment.
Claim 31
Dependent Claim
43 words
The method of claim 23 wherein about 0.005 parts to about 0.02 parts by weight of total organic ligand and inorganic salt, and about 0.005 parts to about 0.02 parts by weight of quinone compound are used per part of said hydrazine compound.
Claim 32
Dependent Claim
16 words
The method of claim 28 wherein each of said components are added separately to said environment.
Claim 33
Dependent Claim
22 words
The method of claim 28 wherein said organic ligand and said hydrazine compound are combined prior to being added to said environment.
Claim 34
Dependent Claim
22 words
The method of claim 28 wherein said inorganic salt and said hydrazine compound are combined prior to being added to said environment.
Claim 35
Dependent Claim
22 words
The method of claim 28 wherein said inorganic salt and said organic ligand are combined prior to being added to said environment.
References Cited (Backward Citations)
US3728281A
Cited
US3843547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |