Patent US4431430A successfully refreshed from Google Patents.
US4431430A
Expired / Lapsed
US
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Composition containing a water soluble alcohol and a corrosion inhibiting additive
Assignee: Texaco Inc
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Filing: 1980-11-14
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Granted: 1984-02-14
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Expires: 2000-11-14
Abstract
Abstract Alcohols may be inhibited against corrosion by addition thereto of an alkenyl-substituted aliphatic dicarboxylic acid.
Inventors
- 👤 Rodney L. Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198; C07; C07C; C07C57/00; C07C57/02; C07C57/13; C07C57/145; C07C57/155; C07C57/52; C10L1/182; C10L1/1822; C10L1/1824
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
Claim 2
Dependent Claim
39 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
Claim 3
Dependent Claim
26 words
A composition as claimed in claim 1 wherein the alkenyl substituent in said alkenyl-substituted aliphatic dicarboxylic acid is derived from an olefin having 2-8 carbon atoms.
Claim 4
Dependent Claim
26 words
A composition as claimed in claim 1 wherein the alkenyl substituent in said alkenyl-substituted aliphatic dicarboxylic acid is derived from an olefin having 2-4 carbon atoms.
Claim 5
Dependent Claim
21 words
A composition as claimed in claim 1 wherein the alkenyl substituent in said alkenyl-substituted aliphatic dicarboxylic acid is derived from butylene.
Claim 6
Dependent Claim
20 words
A composition as claimed in claim 1 wherein the alkenyl substituent has a molecular weight M n of about 300-30,000.
Claim 7
Dependent Claim
20 words
A composition as claimed in claim 1 wherein the alkenyl substituent has a molecular weight M n of about 300-3000.
Claim 8
Dependent Claim
20 words
A composition as claimed in claim 1 wherein the alkenyl substituent has a molecular weight M n of about 1050-1400.
Claim 9
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said aliphatic dicarboxylic acid is a succinic acid.
Claim 10
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said aliphatic dicarboxylic acid is succinic acid se.
Claim 11
Dependent Claim
14 words
A composition as claimed in claim 1 wherein said corrosion-inhibiting amount is 0.0004-0.008 w%.
Claim 12
Dependent Claim
14 words
A composition as claimed in claim 1 wherein said corrosion-inhibiting amount is 0.0004-0.002 w%.
Claim 13
Dependent Claim
32 words
A composition comprising; (i) at least one alcohol selected from the group consisting of methanol and ethanol; and (ii) 0.0001-0.01 w% of polyisobutenyl (M n of at least about 300) succinic acid.
Claim 14
Dependent Claim
32 words
A composition comprising; (i) at least one alcohol selected from the group consisting of methanol and ethanol; and (ii) 0.0001-0.01 w% of polyisobutenyl (M n of at least about 300) succinic acid.
Claim 15
Dependent Claim
29 words
A composition comprising a gasohol and an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl (M n of at least about 300)--substituted aliphatic dicarboxylic acid.
Claim 16
Dependent Claim
29 words
A composition comprising a gasohol and an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl (M n of at least about 300)--substituted aliphatic dicarboxylic acid.
Claim 17
Independent Claim
68 words
The method of treating a composition containing at least one alcohol selected from the group consisting of methanol and ethanol which comprises adding to said composition containing at least one alcohol selected from the group consisting of methanol and ethanol, 0.0001-0.01 w%, as an effective corrosion-inhibiting amount, of at least one alkenyl-substituted dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
Claim 18
Independent Claim
68 words
The method of treating a composition containing at least one alcohol selected from the group consisting of methanol and ethanol which comprises adding to said composition containing at least one alcohol selected from the group consisting of methanol and ethanol, 0.0001-0.01 w%, as an effective corrosion-inhibiting amount, of at least one alkenyl-substituted dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
Claim 19
Dependent Claim
40 words
A composition comprising (i) a water-soluble alcohol; and (ii) 0.0001-0.01 w%, an effective corrosion-inhibiting amount of, as the sole corrosion-inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
Claim 20
Dependent Claim
40 words
A composition comprising (i) a water-soluble alcohol; and (ii) 0.0001-0.01 w%, an effective corrosion-inhibiting amount of, as the sole corrosion-inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M n of at least about 300.
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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) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |