US4867754A
Expired / Lapsed
US
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Process and composition for stabilized distillate fuel oils
Assignee: Veolia WTS USA Inc
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Filing: 1988-05-24
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Granted: 1989-09-19
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Expires: 2008-05-24
Abstract
Abstract This invention relates to processes and compositions for stabilizing distillate fuel oil which comprises adding to the distillate fuel oil an effective stabilizing amount of a mixture of (a) a phosphite compound having the formula ##STR1## wherein R, R' and R" are the same or different and are alkyl, aryl, alkaryl or aralkyl groups and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen and (b) an effective stabilizing amount of: an organic compound containing a tertiary amine having the formula T 3 N, wherein the three T groups are the same or different and are alkyl, cycloalkyl, arly, alkyaryl, or aralkyl such that these groups may contain oxygens or additional nitrogens and each T group has from 1 to about 20 carbon atoms; or the reaction product of tallow amine and epichlorohydrin. The weight ratio of (a):(b) is from about 1:50 to about 100:1.
Inventors
- 👤 Dwight R. Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
130 words
A process for inhibiting deterioration of distillate fuel oil which comprises adding to said fuel oil an effective inhibiting amount of a synergistic mixture of (a) a phosphite compound having the formula ##STR5## wherein R, R' and R" are the same or different alkyl, aryl, alkaryl or aralkyl having from 1 to about 20 carbon atoms and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen, and (b) a tertiary amine having the formula T 3 N wherein the T groups are the same or different and are alkyl, cycloalkyl, aryl, alkyaryl or aralkyl groups with from 1 to about 20 carbon atoms, or the reaction product of tallow amine and epichlorohydrin, wherein the weight ratio of (a):(b) is from about 1:50 to about 100:1.
Claim 2
Dependent Claim
130 words
A process for inhibiting deterioration of distillate fuel oil which comprises adding to said fuel oil an effective inhibiting amount of a synergistic mixture of (a) a phosphite compound having the formula ##STR5## wherein R, R' and R" are the same or different alkyl, aryl, alkaryl or aralkyl having from 1 to about 20 carbon atoms and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen, and (b) a tertiary amine having the formula T 3 N wherein the T groups are the same or different and are alkyl, cycloalkyl, aryl, alkyaryl or aralkyl groups with from 1 to about 20 carbon atoms, or the reaction product of tallow amine and epichlorohydrin, wherein the weight ratio of (a):(b) is from about 1:50 to about 100:1.
Claim 3
Dependent Claim
28 words
The process of claim 1 wherein said mixture is added in an amount from about 1.0 part to about 10,000 parts per million parts of said fuel oil.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said mixture is added to said fuel oil prior to color deterioration of said fuel oil.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein said (a) phosphite is triisopropylphosphite and said (b) tertiary amine is N,N-dimethyl-N-cyclohexylamine.
Claim 6
Dependent Claim
20 words
The process of claim 1 or 4 wherein the weight ratio of (a):(b) is from about 1:30 to about 20:1.
Claim 7
Dependent Claim
15 words
The process of claim 5 wherein the distillate fuel oil is a blended diesel fuel.
Claim 8
Dependent Claim
14 words
The process of claim 6 wherein the weight ratio of (a):(b) is about 1:19.
Claim 9
Dependent Claim
28 words
The process of claim 7 wherein said mixture is added in an amount from about 1.0 part to about 1,500 parts per million parts of said diesel fuel.
Claim 10
Dependent Claim
124 words
A stabilized distillate fuel oil composition comprising distillate fuel oil and an effective stabilizing amount of a synergistic mixture of (a) a phosphite having the formula ##STR6## wherein R, R' and R" are the same or different alkyl, aryl, alkaryl or aralkyl having from 1 to about 20 carbon atoms and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen and (b) a tertiary amine having the formula T 3 N wherein the T groups are the same or different and are alkyl, cycloalkyl, aryl, alkyaryl or aralkyl groups with from 1 to about 20 carbon atoms, or the reaction product of tallow amine an epichlorohydrin, wherein the weight ratio of (a):(b) is from about 1:50 to about 100:1.
Claim 11
Dependent Claim
124 words
A stabilized distillate fuel oil composition comprising distillate fuel oil and an effective stabilizing amount of a synergistic mixture of (a) a phosphite having the formula ##STR6## wherein R, R' and R" are the same or different alkyl, aryl, alkaryl or aralkyl having from 1 to about 20 carbon atoms and these groups may contain oxygen and/or nitrogen, or R and R' may be hydrogen and (b) a tertiary amine having the formula T 3 N wherein the T groups are the same or different and are alkyl, cycloalkyl, aryl, alkyaryl or aralkyl groups with from 1 to about 20 carbon atoms, or the reaction product of tallow amine an epichlorohydrin, wherein the weight ratio of (a):(b) is from about 1:50 to about 100:1.
Claim 12
Dependent Claim
29 words
The composition of claim 9 wherein the total amount of (a) and (b) is from about 1.0 part to about 10,000 parts per million parts of said fuel oil.
Claim 13
Dependent Claim
18 words
The composition of claim 9 wherein the weight ratio of (a):(b) is from about 1:30 to about 20:1.
Claim 14
Dependent Claim
20 words
The composition of claim 9 or 11 wherein said (a) phosphite is triisopropylphosphite and said (b) tertiary amine is N,N-dimethyl-N-cyclohexylamine.
Claim 15
Dependent Claim
15 words
The composition of claim 12 wherein the distillate fuel oil is a blended diesel fuel.
Claim 16
Dependent Claim
14 words
The composition of claim 13 wherein the weight ratio of (a):(b) is about 1:19.
Claim 17
Dependent Claim
29 words
The composition of claim 14 wherein the total amount of (a) and (b) is from about 1.0 part to about 1,500 part per million parts of said diesel fuel.
Claim 18
Dependent Claim
18 words
The process of claim 1 wherein said (a) phosphite is triethylphosphite and said (b) tertiary amine is N,N-dimethyl-N-cyclohexylamine.
Claim 19
Dependent Claim
18 words
The composition of claim 9 wherein said (a) phosphite is triethylphosphite and said (b) tertiary amine is N,N-dimethyl-N-cyclohexylamine.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
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