US4445907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alcohol composition stabilized against corrosion by the use of an amino tetrazole
Assignee: Texaco Inc
•
Filing: 1980-11-14
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Granted: 1984-05-01
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Expires: 2000-11-14
Abstract
Abstract Alcohols may be inhibited against corrosion by addition there to of an amide reaction product of (i) ##STR1## (preferably in the form of the acid, acid chloride or ester) and (ii) an amino tetrazole.
Inventors
- 👤 Rodney L. Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:33
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C07; C07D; C07D251/00; C07D251/02; C07D251/04; C07D251/06
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
58 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount of ##STR15## wherein R is a C 10 -C 20 alkyl, alkeny, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon group, R' is a divalent C 1 -C 5 lower alkylene hydrocarbon group, R"' is alkyl, aryl, alkaryl, or aralkyl, and NH--R" is an amino tetrazole group.
Claim 2
Dependent Claim
58 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount of ##STR15## wherein R is a C 10 -C 20 alkyl, alkeny, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon group, R' is a divalent C 1 -C 5 lower alkylene hydrocarbon group, R"' is alkyl, aryl, alkaryl, or aralkyl, and NH--R" is an amino tetrazole group.
Claim 3
Dependent Claim
12 words
A composition as claimed in claim 1 wherein said alcohol is ethanol.
Claim 4
Dependent Claim
12 words
A composition as claimed in claim 1 wherein said alcohol is methanol.
Claim 5
Dependent Claim
16 words
A composition as claimed in claim 1 wherein said alcohol contains C 1 -C 4 alcohol.
Claim 6
Dependent Claim
13 words
A composition as claimed in claim 1 wherein R is an alkyl group.
Claim 7
Dependent Claim
11 words
A composition as claimed in claim 1 wherein R is stearyl.
Claim 8
Dependent Claim
11 words
A composition as claimed in claim 1 wherein R is decyl.
Claim 9
Dependent Claim
11 words
A composition as claimed in claim 1 wherein R is cocoyl.
Claim 10
Dependent Claim
19 words
A composition as claimed in claim 1 wherein R' is a straight chain C 1 -C 5 alkyl group.
Claim 11
Dependent Claim
13 words
A composition as claimed in claim 1 wherein R' is --CH 2 --.
Claim 12
Dependent Claim
17 words
A composition as claimed in claim 1 wherein R is cocoyl and R' is --CH 2 --.
Claim 13
Dependent Claim
14 words
A composition as claimed in claim 1 wherein R" is derived from 5-amino tetrazole.
Claim 14
Dependent Claim
20 words
A composition as claimed in claim 1 wherein said effective corrosion-inhibiting amount is 0.25-25 pounds per thousand barrels of composition.
Claim 15
Dependent Claim
15 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount of ##STR16##
Claim 16
Dependent Claim
15 words
A composition comprising (i) a water-soluble alcohol; and (ii) an effective corrosion-inhibiting amount of ##STR16##
Claim 17
Dependent Claim
47 words
A composition comprising ##STR17## wherein R is a C 10 -C 20 alkyl, alkenyl, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon group, R' is a divalent C 1 -C 5 lower alkylene hydrocarbon group, R"' is alkyl, aryl, alkaryl, or aralkyl, and NH--R" is an amino tetrazole group.
Claim 18
Dependent Claim
47 words
A composition comprising ##STR17## wherein R is a C 10 -C 20 alkyl, alkenyl, alkaryl, aralkyl, aryl, or cycloalkyl hydrocarbon group, R' is a divalent C 1 -C 5 lower alkylene hydrocarbon group, R"' is alkyl, aryl, alkaryl, or aralkyl, and NH--R" is an amino tetrazole group.
Claim 19
Dependent Claim
13 words
A composition as claimed in claim 15 wherein R is an alkyl group.
Claim 20
Dependent Claim
11 words
A composition as claimed in claim 15 wherein R is stearyl.
Claim 21
Dependent Claim
11 words
A composition as claimed in claim 15 wherein R is decyl.
Claim 22
Dependent Claim
11 words
A composition as claimed in claim 15 wherein R is cocoyl.
Claim 23
Dependent Claim
19 words
A composition as claimed in claim 15 wherein R is a straight chain C 1 -C 5 alkyl group.
Claim 24
Dependent Claim
13 words
A composition as claimed in claim 15 wherein R' is --CH 2 --.
Claim 25
Dependent Claim
17 words
A composition as claimed in claim 15 wherein R is cocoyl and R' is --CH 2 --.
Claim 26
Dependent Claim
14 words
A composition as claimed in claim 15 wherein R" is derived from 5-amino tetrazole.
Claim 27
Dependent Claim
1 words
##STR18##
Claim 28
Dependent Claim
1 words
##STR18##
References Cited (Backward Citations)
US3824249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |