Patent US5074991A successfully refreshed from Google Patents.
US5074991A
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Suppression of the evolution of hydrogen sulfide gases
Assignee: Baker Hughes Holdings LLC
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Filing: 1990-05-18
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Granted: 1991-12-24
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Expires: 2010-05-18
Abstract
Abstract Hydrogen sulfide gas evolution from water or hydrocarbons, especially during storage or transport of petroleum residua is suppressed by the incorporation of an effective amount of a diamine of the formula ##STR1## wherein R 1 , R 2 , R 3 , and R 4 are independently an alky radical containing 1 to 14 carbon atoms, (CH 2 ) n --OR 6 or cycloalkyl containing 5 or 6 carbon atoms and R 5 is hydrogen or methyl. R 1 and R 2 and R 3 and R 4 can be alkylene groups joined together with their respective adjacent N to form a heterocyclic ring. R 6 is hydrogen or an alkyl radical having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Inventors
- 👤 Jerry J. Weers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:11
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C09; C09K; C09K8/00; C09K8/54; C10G; C10G29/00; C10G29/20; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/232; C10L1/233; C10L1/2335; C10L1/24
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
136 words
A process of inhibiting the liberation of hydrogen sulfide gas from a material comprising water or a hydrocarbon containing dissolved hydrogen sulfide comprising adding to said material a sufficient amount of the following diaminomethane compound to inhibit hydrogen sulfide gas evolution: ##STR13## wherein R 1 , R 2 , R 3 , and R 4 are independently an alkyl radical containing one to 14 carbon atoms, (CH 2 ) n --OR 6 or cycloalkyl having 5 or 6 carbon atoms or wherein R 1 and R 2 and/or R 3 and R 4 are alkylene groups joined together with their adjacent N to form a heterocyclic ring and wherein R 5 is hydrogen or methyl and R 6 is an alkyl having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Claim 2
Dependent Claim
136 words
A process of inhibiting the liberation of hydrogen sulfide gas from a material comprising water or a hydrocarbon containing dissolved hydrogen sulfide comprising adding to said material a sufficient amount of the following diaminomethane compound to inhibit hydrogen sulfide gas evolution: ##STR13## wherein R 1 , R 2 , R 3 , and R 4 are independently an alkyl radical containing one to 14 carbon atoms, (CH 2 ) n --OR 6 or cycloalkyl having 5 or 6 carbon atoms or wherein R 1 and R 2 and/or R 3 and R 4 are alkylene groups joined together with their adjacent N to form a heterocyclic ring and wherein R 5 is hydrogen or methyl and R 6 is an alkyl having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Claim 3
Dependent Claim
20 words
The process of claim wherein the diaminomethane compound is present in the amount of about 10 ppm to 10,000 ppm.
Claim 4
Dependent Claim
29 words
The process of claim 1 wherein each of R 1 , R 2 , R 3 , and R 4 are alkyl radicals of 1 to 9 carbon atoms.
Claim 5
Dependent Claim
21 words
The process of claim 3 wherein the diaminomethane compound is present in an amount of about 10 ppm to 10,000 ppm.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein each of the alkyl radicals are n-butyl radicals.
Claim 7
Dependent Claim
20 words
The process of claim 5 wherein the diaminomethane compound is present in the amount of 10 ppm to 10,000 ppm.
Claim 8
Dependent Claim
20 words
The process of claim 1 wherein the diaminomethane compound is present in the amount of 100 ppm to 1,000 ppm.
Claim 9
Dependent Claim
20 words
The process of claim 3 wherein the diaminomethane compound is present in the amount of 100 ppm to 1,000 ppm.
Claim 10
Dependent Claim
20 words
The process of claim 5 wherein the diaminomethane compound is present in the amount of 100 ppm to 1,000 ppm.
Claim 11
Dependent Claim
61 words
The process of claim 1 wherein R 1 and R 2 and/or R 3 and R 4 are ethylene groups joined to form a heterocyclic structure having a hetero atom selected from the group consisting of N, O, or S in addition to the N to which R 1 and R 2 and/or R 3 and R 4 are respectively joined.
Claim 12
Dependent Claim
21 words
The process of claim 10 wherein the diaminomethane compound is present in the amount of about 10 ppm to 10,000 ppm.
Claim 13
Dependent Claim
21 words
The process of claim 10 wherein the diaminomethane compound is present in the amount of about 100 ppm to 1,000 ppm.
Claim 14
Dependent Claim
14 words
The process of claim wherein the diaminomethane compound has the chemical structure of ##STR14##
Claim 15
Dependent Claim
15 words
The process of claim 1 wherein the diaminomethane compound has the chemical structure of ##STR15##
Claim 16
Dependent Claim
15 words
The process of claim 1 wherein the diaminomethane compound has the chemical structure of ##STR16##
Claim 17
Dependent Claim
15 words
The process of claim 1 wherein the diaminomethane compound has the chemical structure of ##STR17##
Claim 18
Dependent Claim
121 words
A composition comprising a. a material comprising water or a hydrocarbon, and b. a sufficient amount of the following diaminomethane compound to inhibit hydrogen sulfide gas liberation: ##STR18## wherein R 1 , R 2 , R 3 , and R 4 are independently an alkyl moiety containing 1 to 14 carbon atoms, (CH 2 ) n --OR 6 or cycloalkyl having 5 or 6 carbon atoms or wherein R 1 and R 2 and/or R 3 and R 4 are alkylene groups joined together with their adjacent N to form a heterocyclic ring and R 5 is hydrogen or methyl and R 6 is an alkyl having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Claim 19
Dependent Claim
121 words
A composition comprising a. a material comprising water or a hydrocarbon, and b. a sufficient amount of the following diaminomethane compound to inhibit hydrogen sulfide gas liberation: ##STR18## wherein R 1 , R 2 , R 3 , and R 4 are independently an alkyl moiety containing 1 to 14 carbon atoms, (CH 2 ) n --OR 6 or cycloalkyl having 5 or 6 carbon atoms or wherein R 1 and R 2 and/or R 3 and R 4 are alkylene groups joined together with their adjacent N to form a heterocyclic ring and R 5 is hydrogen or methyl and R 6 is an alkyl having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Claim 20
Dependent Claim
21 words
The composition of claim 17 wherein the diaminomethane compound is present in the amount of about 10 ppm to 10,000 ppm.
Claim 21
Dependent Claim
17 words
The composition of claim 17 wherein each of the alkyl moieties contain 1 to 9 carbon atoms.
Claim 22
Dependent Claim
21 words
The composition of claim 19 wherein the diaminomethane compound is present in an amount of about 10 ppm to 10,000 ppm.
Claim 23
Dependent Claim
28 words
The composition of claim 17 wherein each of R 1 , R 2 , R 3 , and R 4 are n-butyl radicals and R 5 is hydrogen.
Claim 24
Dependent Claim
20 words
The composition of claim 21 wherein the diaminomethane compound is present in the amount of 10 ppm to 10,000 ppm.
Claim 25
Dependent Claim
20 words
The composition of claim 17 wherein the diaminomethane compound is present in the amount of 100 ppm to 1,000 ppm.
Claim 26
Dependent Claim
20 words
The composition of claim 19 wherein the diaminomethane compound is present in the amount of 100 pp to 1,000 ppm.
Claim 27
Dependent Claim
20 words
The composition of claim 21 wherein the diaminomethane compound is present in the amount of 100 pp to 1,000 ppm.
Claim 28
Dependent Claim
61 words
The composition of claim 17 wherein R 1 and R 2 and/or R 3 and R 4 are ethylene groups joined to form a heterocyclic structure having a hetero atom selected from the group consisting of N, O, or S in addition to the N to which R 1 and R 2 and/or R 3 and R 4 are respectively joined.
Claim 29
Dependent Claim
21 words
The composition of claim 26 wherein the diaminomethane compound is present in the amount of about 10 ppm to 10,000 ppm.
Claim 30
Dependent Claim
21 words
The composition of claim 26 wherein the diaminomethane compound is present in the amount of about 100 ppm to 1,000 ppm.
Claim 31
Dependent Claim
15 words
The composition of claim 17 wherein the diaminomethane compound has the chemical structure of ##STR19##
Claim 32
Dependent Claim
15 words
The composition of claim 17 wherein the diaminomethane compound has the chemical structure of ##STR20##
Claim 33
Dependent Claim
15 words
The composition of claim 17 wherein the diaminomethane compound has the chemical structure of ##STR21##
Claim 34
Dependent Claim
15 words
The composition of claim 17 wherein the diaminomethane compound has the chemical structure of ##STR22##
Claim 35
Dependent Claim
11 words
The process of claim 1 wherein said material is a hydrocarbon.
Claim 36
Dependent Claim
11 words
The process of claim 33 wherein said hydrocarbon is petroleum residua.
Claim 37
Dependent Claim
11 words
The composition of claim 17 wherein said material is a hydrocarbon.
Claim 38
Dependent Claim
11 words
The process of claim 35 wherein said hydrocarbon is petroleum residua.
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