US4499003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimony-molybdenum salt corrosion inhibitor composition
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1982-02-02
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Granted: 1985-02-12
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Expires: 2002-02-02
Abstract
Abstract An aqueous corrosion inhibitor composition of soluble antimony and molybdenum salts in which the weight ratio of soluble antimony salt to molybdenum salt ranges between about 0.01 to 1 and about 5 to 1. This corrosion inhibitor is particularly useful in acid gas scrubbing processes, under alkaline conditions, where alkali metal salts and amine compound promoters are used.
Inventors
- 👤 Z. Andrew Foroulis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; C; C23; C23F; C23F11/00; C23F11/06; C23F11/08; C23F11/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
47 words
A composition for preventing corrosion of metals in contact with alkaline liquid-acid gas scrubbing systems comprising an aqueous solution of soluble salts of antimony and molybdenum wherein the weight ratio of antimony salt to molybdenum salt ranges between about 0.05 to 1 and about 0.2 to 1.
Claim 2
Dependent Claim
47 words
A composition for preventing corrosion of metals in contact with alkaline liquid-acid gas scrubbing systems comprising an aqueous solution of soluble salts of antimony and molybdenum wherein the weight ratio of antimony salt to molybdenum salt ranges between about 0.05 to 1 and about 0.2 to 1.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein the antimony salt is selected from the group of alkali metal antimony salts.
Claim 4
Dependent Claim
22 words
The composition of claim 2 wherein the alkalinous antimony salt is selected from the group consisting of antimonyl tartrates and antimonyl sulfates.
Claim 5
Dependent Claim
20 words
The composition of claim 2 wherein the molybdenum salt is selected from the group consisting of alkali metal molybdenum salts.
Claim 6
Dependent Claim
16 words
The composition of claim 4 wherein the alkali metal molybdenum salt is an alkali metal molybdate.
Claim 7
Dependent Claim
15 words
The composition of claim 5 wherein the alkali metal antimony salt is potassium antimony tartrate.
Claim 8
Dependent Claim
14 words
The composition of claim 6 wherein the alkali metal molybdenum salt is sodium molybdate.
Claim 9
Dependent Claim
53 words
A composition for use within an acid gas scrubbing system comprising an aqueous-alkaline solution containing an effective amount of corrosion inhibiting agent, wherein said agent comprises soluble salts of antimony and molybdenum, wherein the weight ratio of antimony salt to molydenum salt ranges between about 0.01 to 1 and about 5 to 1.
Claim 10
Dependent Claim
53 words
A composition for use within an acid gas scrubbing system comprising an aqueous-alkaline solution containing an effective amount of corrosion inhibiting agent, wherein said agent comprises soluble salts of antimony and molybdenum, wherein the weight ratio of antimony salt to molydenum salt ranges between about 0.01 to 1 and about 5 to 1.
Claim 11
Dependent Claim
26 words
The composition of claim 8 wherein the weight ratio of antimony salt to molybdenum salt ranges between about 0.05 to 1 and about 0.2 to 1.
Claim 12
Dependent Claim
18 words
The composition claim 8 wherein the antimony salt is selected from the group of alkali metal antimony salts.
Claim 13
Dependent Claim
22 words
The composition of claim 10 wherein the alkalinous antimony salt is selected from the group consisting of antimonyl tartrates and antimonyl sulfates.
Claim 14
Dependent Claim
20 words
The composition of claim 10 wherein the molybdenum salt is selected from the group consisting of alkali metal molybdenum salts.
Claim 15
Dependent Claim
16 words
The composition of claim 12 wherein the alkali metal molybdenum salt is an alkali metal molybdate.
Claim 16
Dependent Claim
15 words
The composition of claim 13 wherein the alkali metal antimony salt is potassium antimony tartrate.
Claim 17
Dependent Claim
14 words
The composition of claim 14 wherein the alkali metal molybdenum salt is sodium molybdate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |