US4192769A
Expired / Lapsed
US
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Rust inhibitor additive compositions, method of making, and aqueous fluids containing the same
Assignee: Lubrizol Corp
•
Filing: 1978-05-12
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Granted: 1980-03-11
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Expires: 1998-05-12
Abstract
Abstract The anti-rust properties exhibited by the aqueous fluids described herein are provided by one or more of the rust inhibitor additive composition prepared by reacting: (A) at least one aliphatic polycarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl-substituent with (B) at least one hydroxy-substituted aliphatic amine, and (C) at least one basically reacting alkali metal compound.
Inventors
- 👤 Richard W. Jahnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:29
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
51 words
A stably water-dispersible rust inhibiting composition prepared by the process which comprises reacting (A) at least one aliphatic polycarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl-substituent with (B) at least one hydroxy-substituted aliphatic amine, and (C) at least one basically reacting alkali metal compound.
Claim 2
Dependent Claim
51 words
A stably water-dispersible rust inhibiting composition prepared by the process which comprises reacting (A) at least one aliphatic polycarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl-substituent with (B) at least one hydroxy-substituted aliphatic amine, and (C) at least one basically reacting alkali metal compound.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 prepared by reacting at least one equivalent of (A) with at least 0.1 equivalent of (B), and at least 0.1 equivalent of (C).
Claim 4
Dependent Claim
38 words
A composition according to claim 2 wherein the ratio, in equivalents, of (B) to (A) is from about 1:5 to about 2:1, and the ratio, in equivalents, of (C) to (A) is from about 1:5 to about 1:1.
Claim 5
Dependent Claim
26 words
A composition according to claim 1 wherein (A) and (B) are first reacted to form a nitrogen-containing intermediate and said intermediate is subsequently reacted with (C).
Claim 6
Dependent Claim
25 words
A composition according to claim 1 wherein (A) and (C) are first reacted to form an alkali metal-containing intermediate which is subsequently reacted with (B).
Claim 7
Dependent Claim
14 words
A composition according to claim 1 wherein (A), (B), and (C) are reacted simultaneously.
Claim 8
Dependent Claim
47 words
A composition according to claim 1 wherein (A) is selected from the group consisting of dicarboxylic acids, their anhydrides, their lower alkyl esters, and mixtures of two or more of any of these wherein the aliphatic hydrocarbyl substituent is straight or branched chain and saturated or unsaturated.
Claim 9
Dependent Claim
74 words
A composition according to claim 7 wherein (B) is one or more amines selected from the group consisting of those represented by the formula ##STR3## wherein Alkylene is straight or branched chain and contains from 2 to about 4 carbon atoms; R' is H, alkyl of up to about 4 carbon atoms, or HO--Alkylene--, R" is H or lower alkyl of up to about 4 carbon atoms, and n is a number of 1-8.
Claim 10
Dependent Claim
38 words
A composition according to claim 8 wherein the alkali metal compound in (C) is a member selected from the group consisting of alkali metal hydroxides, hydrates, lower alkoxides, and mixtures of two or more of any of them.
Claim 11
Dependent Claim
20 words
The composition of claim 9 wherein the metal in said alkali metal compound is selected from lithium, sodium and potassium.
Claim 12
Dependent Claim
12 words
The composition of claim 10 wherein the alkali metal compound is lithium.
Claim 13
Dependent Claim
11 words
The composition of claim 9 wherein the amine is a dialkylethanolamine.
Claim 14
Dependent Claim
11 words
The composition of claim 12 wherein the amine is a diethylethanolamine.
Claim 15
Dependent Claim
11 words
The composition of claim 9 wherein the amine is a dialkanolamine.
Claim 16
Dependent Claim
10 words
The composition of claim 14 wherein the amine is diethanolamine.
Claim 17
Dependent Claim
10 words
The composition of claim 14 wherein the amine is di-isopropanolamine.
Claim 18
Dependent Claim
10 words
The composition of claim 14 wherein the amine is di-tert-butanolamine.
Claim 19
Dependent Claim
21 words
The composition of claim 9 wherein the aliphatic hydrocarbyl substituent on the acylating agent contains up to about 30 carbon atoms.
Claim 20
Dependent Claim
17 words
The composition of claim 18 wherein the hydrocarbyl substituent contains from 4 to about 22 carbon atoms.
Claim 21
Dependent Claim
64 words
A stably water-dispersible rust inhibiting composition prepared by the process which comprises reacting (A) at least one aliphatic dicarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl substituent with (B) at least one hydroxy-substituted aliphatic amine, and (C) at least one basically reacting alkali metal compound selected from oxides, hydroxides, hydrates, or alkoxides of lithium, sodium, or potassium.
Claim 22
Dependent Claim
64 words
A stably water-dispersible rust inhibiting composition prepared by the process which comprises reacting (A) at least one aliphatic dicarboxylic acid acylating agent characterized by the presence within its structure of an aliphatic hydrocarbyl substituent with (B) at least one hydroxy-substituted aliphatic amine, and (C) at least one basically reacting alkali metal compound selected from oxides, hydroxides, hydrates, or alkoxides of lithium, sodium, or potassium.
Claim 23
Dependent Claim
18 words
The composition of claim 20 wherein the aliphatic hydrocarbyl substituent contains from 4 to about 30 carbon atoms.
Claim 24
Dependent Claim
23 words
The composition of claim 21 wherein the amine is selected from dialkylalkanolamines, dialkanolamines, and mixtures of two or more of any of these.
Claim 25
Dependent Claim
25 words
The composition of claim 22 wherein the dicarboxylic acid acylating agent is selected from succinic acid, succinic anhydride, and lower alkyl esters of succinic acid.
Claim 26
Dependent Claim
13 words
The composition of claim 23 wherein the acylating agent is tetrapropenyl-substituted succinic acid.
Claim 27
Dependent Claim
15 words
The composition of claim 24 wherein the hydroxyamine is a mixture of diethanolamine and diethylethanolamine.
Claim 28
Dependent Claim
13 words
The composition of claim 25 wherein the basically reacting compound is lithium hydrate.
Claim 29
Dependent Claim
13 words
The composition of claim 25 wherein the basically reacting compound is sodium hydroxide.
Claim 30
Dependent Claim
13 words
The composition of claim 25 wherein the basically reacting compound is potassium hydroxide.
Claim 31
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 1.
Claim 32
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 9.
Claim 33
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 14.
Claim 34
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 20.
Claim 35
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 26.
Claim 36
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 27.
Claim 37
Dependent Claim
29 words
An aqueous industrial fluid comprising a major amount of water and a minor effective amount sufficient to impart rust inhibiting properties thereto of a composition according to claim 28.
Claim 38
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 1.
Claim 39
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 9.
Claim 40
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 14.
Claim 41
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 20.
Claim 42
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 26.
Claim 43
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 27.
Claim 44
Dependent Claim
37 words
A method for inhibiting the rust of ferrous metal surfaces which are in contact with an aqueous medium, which comprises adding to said aqueous medium a minor effective amount of the rust inhibiting composition of claim 28.
Claim 45
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 1.
Claim 46
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 9.
Claim 47
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 14.
Claim 48
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 20.
Claim 49
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 26.
Claim 50
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 27.
Claim 51
Dependent Claim
17 words
An aqueous concentrate comprising from 2 to about 60% by weight of the composition of claim 28.
References Cited (Backward Citations)
US2638449A
Cited
US2726215A
Cited
US3556994A
Cited
US3531411A
Cited
US3788988A
Cited
US3897349A
Cited
US3893931A
Cited
US3931020A
Cited
US4043925A
Cited
US3940339A
Cited
US4053426A
Cited
US4113498A
Cited
US4072626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |