US4392866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etheramine corrosion inhibitor for alcohols
Assignee: Texaco Inc
•
Filing: 1981-11-05
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Granted: 1983-07-12
•
Expires: 2001-11-05
Abstract
Abstract Alcohols may be inhibited against corrosion by addition thereto of an ether amine ##STR1## typically C 12 H 25 OCH 2 CH 2 CH 2 NHCH 2 CH 2 CH 2 NH 2 .
Inventors
- 👤 Rodney L. Sung
- 👤 George J. Sidote
- 👤 William M. Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
95 words
A composition comprising (i) a water-soluble alcohol; and (ii) as corrosion inhibiting additive an effective corrosion-inhibiting amount of an amine having the formula ##STR5## wherein R contains 1-30 carbon atoms and is selected from the group consisting of alkyl, alkenyl, alkaryl, aralkyl, cycloalkyl, and aryl groups and R' and R" are the same or different divalent hydrocarbon group containing 1-30 carbon atoms and are selected from the group consisting of alkylene, alkenylene, alkarylene, aralkylene, cycloalkylene, and arylene groups, and a and b are each an integer 1-2, and a plus b is less than four.
Claim 2
Dependent Claim
95 words
A composition comprising (i) a water-soluble alcohol; and (ii) as corrosion inhibiting additive an effective corrosion-inhibiting amount of an amine having the formula ##STR5## wherein R contains 1-30 carbon atoms and is selected from the group consisting of alkyl, alkenyl, alkaryl, aralkyl, cycloalkyl, and aryl groups and R' and R" are the same or different divalent hydrocarbon group containing 1-30 carbon atoms and are selected from the group consisting of alkylene, alkenylene, alkarylene, aralkylene, cycloalkylene, and arylene groups, and a and b are each an integer 1-2, and a plus b is less than four.
Claim 3
Dependent Claim
14 words
A composition as claimed in claim 1 wherein said water-soluble alcohol composition contains ethanol.
Claim 4
Dependent Claim
14 words
A composition as claimed in claim 1 wherein said water-soluble alcohol composition contains methanol.
Claim 5
Dependent Claim
17 words
A composition as claimed in claim 1 wherein said water-soluble alcohol composition contains anhydrous methanol or ethanol.
Claim 6
Dependent Claim
18 words
A composition as claimed in claim 1 wherein said water-soluble alcohol composition contains ethanol together with acidic contaminants.
Claim 7
Dependent Claim
12 words
A composition as claimed in claim 1 wherein said additive is (ROR')NH(R"NH.sub.2).
Claim 8
Dependent Claim
16 words
A composition as claimed in claim 6 wherein R is a C 6 -C 13 alkyl.
Claim 9
Dependent Claim
18 words
A composition as claimed in claim 6 wherein R' is a C 2 -C 3 straight chain alkyl.
Claim 10
Dependent Claim
30 words
A composition as claimed in claim 6 wherein R is a C 6 -C 13 straight chain alkyl and R' and R" are C 2 -C 3 straight chain alkyl.
Claim 11
Dependent Claim
20 words
A composition as claimed in claim 6 wherein said additive is C.sub.12 H.sub.25 OCH.sub.2 CH.sub.2 CH.sub.2 --NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2.
Claim 12
Dependent Claim
13 words
A composition as claimed in claim 1 wherein said additive is (ROR').sub.2 N(R"NH.sub.2).
Claim 13
Dependent Claim
16 words
A composition as claimed in claim 11 wherein R is a C 6 -C 13 alkyl.
Claim 14
Dependent Claim
19 words
A composition as claimed in claim 11 wherein R' and R" are C 2 -C 3 straight chain alkyl.
Claim 15
Dependent Claim
30 words
A composition as claimed in claim 11 wherein R is a C 6 -C 13 straight chain alkyl and R' and R" are C 2 -C 3 straight chain alkyl.
Claim 16
Dependent Claim
19 words
A composition as claimed in claim 11 wherein said additive is (C.sub.12 H.sub.25 OCH.sub.2 CH.sub.2 CH.sub.2).sub.2 N(CH.sub.2 CH.sub.2 NH.sub.2).
Claim 17
Dependent Claim
18 words
A composition as claimed in claim 1 wherein said additive is (ROR') N (R"NH 2 ) 2 .
Claim 18
Dependent Claim
16 words
A composition as claimed in claim 16 wherein R is a C 6 -C 13 alkyl.
Claim 19
Dependent Claim
19 words
A composition as claimed in claim 16 wherein R' and R" are C 2 -C 3 straight chain alkyl.
Claim 20
Dependent Claim
30 words
A composition as claimed in claim 16 wherein R is a C 6 -C 13 straight chain alkyl and R' and R" are C 2 -C 3 straight chain alkyl.
Claim 21
Dependent Claim
19 words
A composition as claimed in claim 16 wherein said additive is (C.sub.12 H.sub.25 OCH.sub.2 CH.sub.2 CH.sub.2)N(CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2).sub.2.
Claim 22
Dependent Claim
25 words
A composition comprising: (i) at least one of ethanol and methanol and (ii) 0.25-25 PTB of C.sub.12 H.sub.25 OCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2.
Claim 23
Dependent Claim
25 words
A composition comprising: (i) at least one of ethanol and methanol and (ii) 0.25-25 PTB of C.sub.12 H.sub.25 OCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2.
Claim 24
Independent Claim
91 words
The method of inhibiting against corrosion a water-soluble alcohol composition which comprises adding to said water-soluble alcohol composition an amine having the formula ##STR6## wherein R contains 1-30 carbon atoms and is selected from the group consisting of alkyl, alkenyl, alkaryl, aralkyl, cycloalkyl, and aryl groups and R' and R" are divalent hydrocarbon group containing 1-30 carbon atoms and is seleced from the group consisting of alkylene, alkenylene, alkarylene, aralkylene, cycloalkylene, and arylene groups, and a and b are each an integer 1-2, and a plus b is less than four.
Claim 25
Independent Claim
91 words
The method of inhibiting against corrosion a water-soluble alcohol composition which comprises adding to said water-soluble alcohol composition an amine having the formula ##STR6## wherein R contains 1-30 carbon atoms and is selected from the group consisting of alkyl, alkenyl, alkaryl, aralkyl, cycloalkyl, and aryl groups and R' and R" are divalent hydrocarbon group containing 1-30 carbon atoms and is seleced from the group consisting of alkylene, alkenylene, alkarylene, aralkylene, cycloalkylene, and arylene groups, and a and b are each an integer 1-2, and a plus b is less than four.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |