US2333294A - Treatment of gasoline - Google Patents
Treatment of gasoline Download PDFInfo
- Publication number
- US2333294A US2333294A US338049A US33804940A US2333294A US 2333294 A US2333294 A US 2333294A US 338049 A US338049 A US 338049A US 33804940 A US33804940 A US 33804940A US 2333294 A US2333294 A US 2333294A
- Authority
- US
- United States
- Prior art keywords
- gasoline
- gum
- inhibitor
- compounds
- inhibitors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/183—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/183—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom
- C10L1/1832—Organic compounds containing oxygen containing hydroxy groups; Salts thereof at least one hydroxy group bound to an aromatic carbon atom mono-hydroxy
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/223—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond having at least one amino group bound to an aromatic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
- C10L1/223—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond having at least one amino group bound to an aromatic carbon atom
- C10L1/2235—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond having at least one amino group bound to an aromatic carbon atom hydroxy containing
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/232—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring
- C10L1/233—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring containing nitrogen and oxygen in the ring, e.g. oxazoles
- C10L1/2335—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring containing nitrogen and oxygen in the ring, e.g. oxazoles morpholino, and derivatives thereof
Definitions
- the use of inhibitors has 'replaced or supplemented such forms of refining as acid-treating, clay-treating and the like. The result has been a material saving in refining costs as well as the conservation of substantial amounts of gasoline which were formerly lost in the refining steps.
- the present invention offers a means of improving the inhibiting properties of gasoline gum inhibitors and of efiecting material savings in the quantities of such materials which may be required adequately to preserve the valuable properties of gasoline,
- the present invention comprises a method for treating hydrocarbon distillate such as cracked gasoline to preserve the valuable properties thereof by adding to saiddistillate a gasoline gum inhibitor, together with I a relatively minor quantity of a substituted alkylene diamine.
- compounds are N,N-diethyl ethylene diamine, N,N-di-nbutyl-ethylene diamine, N-ethyl-ethylene diamine, N-phenylethylene diamine, 4-(p-aminoethyl) -morpholine, N-ethyl-N'-fi-amino-ethylethylene diamine N-ethyl-N-p-aminoethyl ethylene diamine, and N,N-diethyl-N' -fl-aminoethyl ethylene diamine.
- the compounds of this invention may be added to the gasoline separately or simultaneously with the gum inhibitor or may be previously mixed with the gum inhibitor and the mixture added to the gasoline. In any event, a relatively'minor amount of the compounds of this invention are added as compared with the gum inhibitor used. The exact quantity will be dependent to a large extent upon the gasoline being treated and to its response'to the action of gum inhibitors in general.
- the compounds of this invention are not necestive of the present invention.
- the oxygen bomb induction period of the various gasolines was determined. These are shown in the following table.
- a method of treating cracked gasoline to prevent depreciation thereof which comprises adding to said gasoline a phenolic gum inhibitor and a compound of the following general structure:
- R is an alkyl group and :1: is an integer, the amount of said compound being insufiicient, in the absence of the inhibitor, to efiect any appreciable gum inhibition of the gasoline.
- R, R and R" are alkyl groups and a: is an integer.
- R and R are alkyl groups and :1: is an integer.
- a stabilizing agent for gum-forming gasoline comprising a phenolic gum inhibitor and an alkylene diamine in which a hydrogen atom of an amino group has been substituted by an' alkyl group.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
Patented Nov. 2, 1943 versal Oil Products Company, corporation of Delaware Chicago, 111., a
No Drawing. Application May $1, 1940,
Serial No. 338,049
7 Claims. ((2144-72) a This invention relates to a method for improving the stability of hydrocarbon distillates in so far as color and gum formation are concerned. More particularly the process concerns improved methods of preventing deterioration of cracked gasoline which may be stored over relatively long periods of time in the presence of air, and is a continuation-in-part of my copending application Serial No. 321,571, filed February 29, 1940.
The use of inhibitors to prevent the depreciation of olefin-containing hydrocarbon distillates such as cracked gasoline has been practiced.
Such compounds as alkyl-substituted phenols,
aminophenols, fractions of wood tar distillates, etc., have been added to cracked gasoline in relatively minor quantities, oi! the order of 0.001- 0.l% to inhibit the formation of objectionable oxidation products and prevent loss of color and anti-knock properties of said gasolines during storage periods. The use of inhibitors has 'replaced or supplemented such forms of refining as acid-treating, clay-treating and the like. The result has been a material saving in refining costs as well as the conservation of substantial amounts of gasoline which were formerly lost in the refining steps. The present invention offers a means of improving the inhibiting properties of gasoline gum inhibitors and of efiecting material savings in the quantities of such materials which may be required adequately to preserve the valuable properties of gasoline,
In one specific embodiment the present invention comprises a method for treating hydrocarbon distillate such as cracked gasoline to preserve the valuable properties thereof by adding to saiddistillate a gasoline gum inhibitor, together with I a relatively minor quantity of a substituted alkylene diamine.
These compounds have the general structural formula:
R RI! I R!!! N(CHa)1+,(OH:)z'-N R H H wherein R is an alkyl group, R and R" may be an alkyl group or a hydrogen atom; wherein R' may be a hydrogen atom, an alkyl group or an aminoalkyl group; a: may be zero or an integer,
and :c' is an integer. Representative: compounds are N,N-diethyl ethylene diamine, N,N-di-nbutyl-ethylene diamine, N-ethyl-ethylene diamine, N-phenylethylene diamine, 4-(p-aminoethyl) -morpholine, N-ethyl-N'-fi-amino-ethylethylene diamine N-ethyl-N-p-aminoethyl ethylene diamine, and N,N-diethyl-N' -fl-aminoethyl ethylene diamine.
The compounds are used in combination with known gasoline gum inhibitors such as all-:yl
phenols, N -substituted alkylamino-phenols; substituted phenol ethers; fractions of hardwood tar I distillate boiling within the range of approximately, 240-280 C., and others. The compounds of this invention may be added to the gasoline separately or simultaneously with the gum inhibitor or may be previously mixed with the gum inhibitor and the mixture added to the gasoline. In any event, a relatively'minor amount of the compounds of this invention are added as compared with the gum inhibitor used. The exact quantity will be dependent to a large extent upon the gasoline being treated and to its response'to the action of gum inhibitors in general.
The quantity of alkylene diamine used in the gasoline is of the order of 0.0001-0.01%. The exact quantity required is a function 01 the inhibitor used and of the gasoline as well as the desired stability of the gasoline treated. The compounds of this invention are not of themselves gum inhibitors and the effect observed is not, therefore, such as might be expected by the mixing of two gasoline gum inhibitors. When added alone to cracked gasoline in amounts up to approximately 0.1%, little or no increase in the oxygen bomb induction period is to be observed and the storage tests indicate that no protection is obtained for the gasoline under storage conditions. However, when an inhibitor is added, the induction period with a given quantity of a gum inhibitor is markedly increased and with the more effective compounds of this invention, more than equal weight percentages of the inhibitor can be replaced without sufiering a loss of inhibitor potency. This will be brought out more fully in the examples to be given later.
The compounds of this invention are not necestive of the present invention. The oxygen bomb induction period of the various gasolines was determined. These are shown in the following table.
Oxy en bomb nduo- Compound added tion period Minutes It will be noted that in all cases the induction period of the gasoline is increased upon the addition of the compounds over that obtainable with the inhibitor alone. In all cases when the original gasoline was tested with these compounds in the absence of added gum inhibitor, no increase in induction period occurred, showing that the compounds themselves are not inhibitors, but that when used in conjunction with gum inhibitors they serve to increase the effectiveness thereof. Thus in order to obtain a given induction period, a smaller amount by weight of a mixture of the compounds of this invention with a gum inhibitor is required than would be required if the gum inhibitor alone were used.
I claim as my invention:
1. A method of treating cracked gasoline to prevent depreciation thereof which comprises adding to said gasoline a phenolic gum inhibitor and a compound of the following general structure:
wherein R is an alkyl group and :1: is an integer, the amount of said compound being insufiicient, in the absence of the inhibitor, to efiect any appreciable gum inhibition of the gasoline.
2. A method of treating cracked gasoline to prevent depreciation thereof which comprises adding to said gasoline a gasoline gum inhibitor and a compound having the following general structure:
wherein R, R and R" are alkyl groups and a: is an integer.
3. A method of treating cracked gasoline to prevent depreciation thereof which comprises adding to said gasoline a gasoline gum inhibitor and a compound of the following general structure:
wherein R and R are alkyl groups and :c is an integer.
4. A method of treating cracked gasoline to prevent depreciation thereof which comprises adding to said gasoline a gasoline gum inhibitor and a compound of the following general structure:
wherein R and R are alkyl groups and :1: is an integer.
5. In the stabilization of olefinic gasoline by the addition of phenolic gum inhibitors thereto. the method of increasing the effectiveness of the inhibitor which comprises incorporating into the gasoline, in addition to the phenolic inhibitor, an alkylene diamine in which a hydrogen atom of an amino group has been substituted by an alkyl group.
6. The method as defined in claim 5 further characterized in that said diamine is incorporated into the gasoline in the amount of approximately 0.0001-0.01%.
'7. A stabilizing agent for gum-forming gasoline comprising a phenolic gum inhibitor and an alkylene diamine in which a hydrogen atom of an amino group has been substituted by an' alkyl group.
JOSEPH A. CHIENICEK.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US338049A US2333294A (en) | 1940-05-31 | 1940-05-31 | Treatment of gasoline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US338049A US2333294A (en) | 1940-05-31 | 1940-05-31 | Treatment of gasoline |
Publications (1)
Publication Number | Publication Date |
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US2333294A true US2333294A (en) | 1943-11-02 |
Family
ID=23323196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US338049A Expired - Lifetime US2333294A (en) | 1940-05-31 | 1940-05-31 | Treatment of gasoline |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2438975A (en) * | 1944-02-25 | 1948-04-06 | Celanese Corp | An alkyl cellulose stabilized with an n, n, dialkylated diamine |
US2729691A (en) * | 1951-10-27 | 1956-01-03 | Ethyl Corp | Synergistic stabilizing compositions for organic materials comprising a mixture of an arylamine and an alkylenediamine |
US2906611A (en) * | 1954-07-28 | 1959-09-29 | Standard Oil Co | Color stable heater oils |
US2917377A (en) * | 1956-05-09 | 1959-12-15 | Petrolite Corp | Synergistic stabilizing compositions |
US2993335A (en) * | 1956-09-13 | 1961-07-25 | Phillips Petroleum Co | Reaction motor fuel |
US3523769A (en) * | 1966-07-25 | 1970-08-11 | Phillips Petroleum Co | Mono-substituted hydrocarbon fuel additives |
US4163646A (en) * | 1972-09-27 | 1979-08-07 | Petrolite Corporation | Fuel oils containing N,N-substituted diamines |
US4279621A (en) * | 1978-09-14 | 1981-07-21 | Phillips Petroleum Company | Polyamines mixture for stabilizing certain hydrocarbons against oxidation |
US4295862A (en) * | 1980-10-24 | 1981-10-20 | Phillips Petroleum Company | Motor fuel |
US4744881A (en) * | 1984-12-05 | 1988-05-17 | Betz Laboratories, Inc. | Antioxidant material and its use |
US4978366A (en) * | 1988-01-14 | 1990-12-18 | Petrolite Corporation | Distillate fuels stabilized with diaminomethane and method thereof |
US5169410A (en) * | 1991-09-24 | 1992-12-08 | Betz Laboratories, Inc. | Methods for stabilizing gasoline mixtures |
US5711767A (en) * | 1996-07-11 | 1998-01-27 | Ciba Specialty Chemicals Corporation | Stabilizers for the prevention of gum formation in gasoline |
US20030079399A1 (en) * | 2001-09-14 | 2003-05-01 | Malfer Dennis J. | Fuels compositions for direct injection gasoline engines |
US20070289203A1 (en) * | 2006-06-14 | 2007-12-20 | Deblase Frank J | Antioxidant additive for biodiesel fuels |
WO2008049822A3 (en) * | 2006-10-27 | 2008-07-17 | Basf Se | Oligo- or polyamines as oxidation stabilizers for biofuel oils |
-
1940
- 1940-05-31 US US338049A patent/US2333294A/en not_active Expired - Lifetime
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2438975A (en) * | 1944-02-25 | 1948-04-06 | Celanese Corp | An alkyl cellulose stabilized with an n, n, dialkylated diamine |
US2729691A (en) * | 1951-10-27 | 1956-01-03 | Ethyl Corp | Synergistic stabilizing compositions for organic materials comprising a mixture of an arylamine and an alkylenediamine |
US2906611A (en) * | 1954-07-28 | 1959-09-29 | Standard Oil Co | Color stable heater oils |
US2917377A (en) * | 1956-05-09 | 1959-12-15 | Petrolite Corp | Synergistic stabilizing compositions |
US2993335A (en) * | 1956-09-13 | 1961-07-25 | Phillips Petroleum Co | Reaction motor fuel |
US3523769A (en) * | 1966-07-25 | 1970-08-11 | Phillips Petroleum Co | Mono-substituted hydrocarbon fuel additives |
US4163646A (en) * | 1972-09-27 | 1979-08-07 | Petrolite Corporation | Fuel oils containing N,N-substituted diamines |
US4279621A (en) * | 1978-09-14 | 1981-07-21 | Phillips Petroleum Company | Polyamines mixture for stabilizing certain hydrocarbons against oxidation |
US4295862A (en) * | 1980-10-24 | 1981-10-20 | Phillips Petroleum Company | Motor fuel |
US4744881A (en) * | 1984-12-05 | 1988-05-17 | Betz Laboratories, Inc. | Antioxidant material and its use |
US4978366A (en) * | 1988-01-14 | 1990-12-18 | Petrolite Corporation | Distillate fuels stabilized with diaminomethane and method thereof |
US5169410A (en) * | 1991-09-24 | 1992-12-08 | Betz Laboratories, Inc. | Methods for stabilizing gasoline mixtures |
US5711767A (en) * | 1996-07-11 | 1998-01-27 | Ciba Specialty Chemicals Corporation | Stabilizers for the prevention of gum formation in gasoline |
US20030079399A1 (en) * | 2001-09-14 | 2003-05-01 | Malfer Dennis J. | Fuels compositions for direct injection gasoline engines |
US7112230B2 (en) * | 2001-09-14 | 2006-09-26 | Afton Chemical Intangibles Llc | Fuels compositions for direct injection gasoline engines |
US20070289203A1 (en) * | 2006-06-14 | 2007-12-20 | Deblase Frank J | Antioxidant additive for biodiesel fuels |
US7964002B2 (en) | 2006-06-14 | 2011-06-21 | Chemtura Corporation | Antioxidant additive for biodiesel fuels |
US20110209390A1 (en) * | 2006-06-14 | 2011-09-01 | Deblase Frank J | Antioxidant Additive for Biodiesel Fuels |
US8313542B2 (en) | 2006-06-14 | 2012-11-20 | Chemtura Corporation | Antioxidant additive for biodiesel fuels |
WO2008049822A3 (en) * | 2006-10-27 | 2008-07-17 | Basf Se | Oligo- or polyamines as oxidation stabilizers for biofuel oils |
US20100064576A1 (en) * | 2006-10-27 | 2010-03-18 | Basf Se | Oligo- or polyamines as oxidation stabilizers for biofuel oils |
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