US20120233912A1 - Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants) - Google Patents

Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants) Download PDF

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Publication number
US20120233912A1
US20120233912A1 US13/195,363 US201113195363A US2012233912A1 US 20120233912 A1 US20120233912 A1 US 20120233912A1 US 201113195363 A US201113195363 A US 201113195363A US 2012233912 A1 US2012233912 A1 US 2012233912A1
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tert
biodiesel fuel
butyl
composition
alkylphenol
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Roza Minizievna SALAVATOVA
Nikolai Arkadievich NIYAZOV
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OTKRYTOE AKTSIONERNOE OBSCHESTVO "STERLITAMAXKY NEFTEKHIMICHESKY ZAVOD\
OTKRYTOE AKTSIONERNOE OBSCHESTVO "STERLITAMAXKY NEFTEKHIMICHESKY ZAVOD"
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OTKRYTOE AKTSIONERNOE OBSCHESTVO "STERLITAMAXKY NEFTEKHIMICHESKY ZAVOD"
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Assigned to OTKRYTOE AKTSIONERNOE OBSCHESTVO "STERLITAMAXKY NEFTEKHIMICHESKY ZAVOD\ reassignment OTKRYTOE AKTSIONERNOE OBSCHESTVO "STERLITAMAXKY NEFTEKHIMICHESKY ZAVOD\ ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Niyazov, Nikolai Arkadievich, Salavatova, Roza Minizievna
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    • 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
    • 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
    • C10L1/1857—Aldehydes; Ketones
    • 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
    • C10L2200/00—Components of fuel compositions
    • C10L2200/04—Organic compounds
    • C10L2200/0461—Fractions defined by their origin
    • C10L2200/0469—Renewables or materials of biological origin
    • C10L2200/0476—Biodiesel, i.e. defined lower alkyl esters of fatty acids first generation biodiesel
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/08—Inhibitors
    • C10L2230/081—Anti-oxidants
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/14—Function and purpose of a components of a fuel or the composition as a whole for improving storage or transport of the fuel
    • 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
    • C10L2300/00—Mixture of two or more additives covered by the same group of C10L1/00 - C10L1/308
    • C10L2300/40—Mixture of four or more components

Definitions

  • This invention relates to the petrochemical industry, in particular, to a method for improving the storage stability of biodiesel fuel via using an antioxidant additive.
  • Biodiesel fuels are produced via transesterification of vegetable oils (triglycerides of higher fatty acids), such as rapeseed oil, soybean oil, palm oil, sunflower oil, and others, and animal fats, with methanol, more rarely with ethanol or isopropanol, in the presence of potassium or sodium hydroxide to serve as a catalyst.
  • Biodiesels represent mixtures of methyl fatty acid esters; they are environmentally promising fuels on the international market.
  • Biodiesel is used as a fuel for diesel and automobile engines, combined heat and power blocks, ships and boats, as well as for stationary diesel engines of trackless land vehicles with motor drive.
  • Biodiesel is a nontoxic, naturally degradable type of fuel; it is virtually free of sulfur and carcinogenic benzene and is derived from renewable resources which are not conductive to the accumulation of gases that cause the greenhouse effect (CO, CO 2 , SO 2 , fine particulates, and volatile organic compounds) as opposed to oil-derived fuel.
  • the advantages of biodiesel include good lubricating characteristics (which prolong the life of the engine), higher cetane numbers, and facilitation of cleaning injectors, fuel pumps, and fuel supply channels.
  • biodiesel fuel is its limited storage stability. This is on account of high contents of methyl esters of unsaturated fatty acids, which progressively deteriorate over time the energy value of this fuel and lead to precipitation (which is recognized as fuel clouding) as a result of oxidative degradation to short-chain products.
  • the products formed in the course of degradation of unsaturated fatty acid esters, namely, peroxides, aldehydes, and free short-chain fatty acids lead to sparingly soluble precipitations and cause metal corrosion in the engine and injection system, and shorten the life of the engine and its power.
  • Oil-derived diesel fuels are used with a wide spectrum of additives that improve the oxidation stability and other properties thereof.
  • Biodiesel additives are yet far fewer, but they considerably extend the capabilities of this type of biofuel.
  • a stabilizer additive is especially important for biodiesels derived from vegetable oils with high unsaturated fatty acid contents.
  • a method for improving the stability of biodiesel fuel comprising addition to the biodiesel of the main antioxidant in an amount of from 10 to 20 000 ppm (parts per million) and further the addition of a secondary antioxidant.
  • the main antioxidant represents bisphenol and is dissolved in an organic solvent before being added to the biodiesel (see US 2006/0219979 A1 C09K15/04, publ. Oct. 5, 2006).
  • a drawback of this method consists of the complexity of biodiesel stabilization, wherein the additives used create an insufficiently long-lasting stabilizing effect when added to the biodiesel.
  • the antioxidant additives used in this method create an insufficiently long-lasting stabilizing effect when added to the biodiesel.
  • Phenylenediamines such as Irgunox L57 and Irgunox L74
  • sterically hindered phenols Hitec 4702, BHT (4-methyl-2,6-di-tert-butyltoluene), Ionol CP, Lowinox, and propyl gallate
  • a method for improving the storage stability of diesel biofuel comprising addition of a liquid initial solution containing 2,6-di-tert-butylhydroxytoluene (BHT) in an amount of 15 to 60 mass of based on the initial solution dissolved in diesel biofuel, to the diesel biofuel to be stabilized to reach a 2,6-di-tert-butylhydroxytoluene concentration of 0.005 to 2 mass % based on the entire diesel biofuel solution (see patent RU 2340655 C10L1/183, publ. Dec. 10, 2008).
  • BHT 2,6-di-tert-butylhydroxytoluene
  • the antioxidant additive used in this method creates an insufficiently long-lasting stabilizing effect when added to the biodiesel fuel in relatively high dosages.
  • the object of the present invention is to considerably increase the storage stability of diesel biofuel.
  • alkylphenol-based antioxidant additive composition wherein the composition is comprised of, in mass %:
  • One more object of the invention is to provide a solution of an alkylphenol-based antioxidant additive composition to be added to biodiesel fuel, comprising the aforementioned alkylphenol-based antioxidant additive composition in a concentration of 6 to 48 mass % in the biodiesel fuel.
  • each component is a known antioxidant
  • each component is a known antioxidant
  • the antioxidant effect is retained for 10.3 h and 8.3 h, respectively (see WO 2008/065015 A1 C10L1/02, C10L1/14, C10L10/00, publ. Jun. 5, 2008)
  • the claimed alkylphenol composition is added to biodiesel fuel in a lower dosage (less than 1900 ppm)
  • the antioxidant effect is retained for more than 10.0 h.
  • antioxidant (Ionol 220; 4,4-methylene-bis(2,6-di-tert-butylphenol), when added to biodiesel fuel in a dosage of 500 ppm, causes an antioxidant effect lasting 8.0 h (see US 2006/0219979 A1 C09K15/04, publ. Oct. 5, 2006), against a period of longer than 8.0 h for the claimed alkylphenol composition added in the same dosage.
  • a method for improving the storage stability of biodiesel fuel comprising addition of an alkylphenol-based antioxidant additive via providing an initial solution containing from 6 to 48 mass % of the alkylphenol-based composition, wherein the composition is comprised of, in mass %:
  • biodiesel fuel dissolved in biodiesel fuel, and adding the solution of the composition to the biodiesel fuel to reach a concentration of 0.002 to 1.6 mass % based on the entire biodiesel fuel solution.
  • Another method for improving the storage stability of biodiesel fuel is to introduce an alkylphenol-based antioxidant additive in the form of a solution of the antioxidant additive composition to reach a concentration of the composition of from 0.002 to 1.6 mass % based on the entire biodiesel fuel solution.
  • the result of this method consists of using the aforementioned antioxidant additive which creates a long-lasting stabilizing effect with a reduced amount of the antioxidant additive added to biodiesel fuel.
  • the used antioxidant additive inhibits precipitation during the shelf life of biodiesel fuel for a longer period of time.
  • Biodisel fuel is produced by a known process, namely, transesterification of vegetable oils (triglycerides of higher fatty acids), for example, rapeseed oil, soybean oil, palm oil, or age-old dietary oil and fat, or animal fat, with methanol in the presence of an alkali (potassium or sodium hydroxide) intended to serve as a catalyst.
  • Biodiesel fuel may further contain all ordinary additives that are added to, for example, improve the stability of the fuel in the winter season.
  • Biodiesel fuels meet quality standards provided by DIN EN 14214 (this standard describes physical properties of all types of diesel fuels sold in the EC, Iceland, Norway, and Switzerland) and DIN 51606 (the German standard designed to be compatible with the engines of almost all major automakers).
  • the initial solution is provided by adding a melt of the aforementioned alkylphenol composition to biodiesel fuel under stirring at a temperature of from 40 to 150° C. to reach a concentration of the composition of from 6 to 48 mass % based on the initial solution.
  • biodiesel fuel as the solvent for preparing the initial solution allows avoiding addition of undesirable additives to the biodiesel fuel.
  • the antioxidant additive composition is a solid material at room temperature.
  • a solution containing from 6 to 48 mass % of the alkylphenol composition dissolved in biodiesel fuel is easy to be added to the biodiesel fuel under stirring at 20° C. to reach a concentration of the composition of from 0.002 to 1.6 mass % based on the entire biodiesel fuel solution.
  • Table 1 compiles comparative data on the solubility of the initial solution provided by adding BHT and the alkylphenol composition of the present invention to biodiesel fuel upon temperature depression.
  • the alkylphenol composition of the present invention was as follows, in mass %:
  • the stabilizing effect of the claimed antioxidant additive is generated upon the attainment of the concentration of the alkylphenol composition in the biodiesel fuel of 0.002 mass % based on the entire biodiesel fuel solution. It was discovered that, when the concentration of the claimed alkylphenol composition in biodiesel fuel was less than 0.002 mass % based on the entire biodiesel solution, there was no stabilizing effect.
  • FIG. 1 shows the oxidation stability of biodiesel fuel BHT and APC (alkyl phenol composition) as a function of the antioxidant additive amount
  • FIG. 2 illustrates how an antioxidant additive affects the storage stability of biodiesel fuel.
  • Examples 1 to 4 studied the easiest-to-oxidize biodiesel fuel which was manufactured via transesterification of sunflower oil to which the antioxidant additive of the present invention was added in an amount of 3000 ppm (the concentration of the alkylphenol composition was 0.3 mass % based on the entire biodiesel fuel solution) using the claimed method with various alkylphenol compositions.
  • the oxidation stability of the biodiesel fuel as determined by the Rancimat test at 110° C. is 6.5 h.
  • the oxidation stability of the biodiesel fuel as determined by the Rancimat test at 110° C. is 9.2 h.
  • the oxidation stability of the biodiesel fuel as determined by the Rancimat test at 110° C. is 9.4 h.
  • the oxidation stability of the biodiesel as determined by the Rancimat test at 110° C. is 8.3 h.
  • the oxidation stability of biodiesel fuel decreases considerably in case where the alkylphenol proportion in the antioxidant additive added to the biodiesel is below the lower bound or above the upper bound of the composition.
  • the alkylphenol proportion in the antioxidant additive added to the biodiesel is above the upper bound, there is risk of deterioration of the quality characteristics of the biodiesel within the standard of DIN 51606.
  • Examples 5 to 11 provide data for the following alkylphenol compositions, mass %
  • Table 2 compiles comparative data on the concentrations of antioxidant additives BHT and the alkylphenol composition (according to the invention) added to biodiesel fuels manufactured by transesterification of rapeseed oil (Example 5), sunflower oil (Example 6), soybean oil (Example 7), and dietary fat (Example 8), to attain approximately equal oxidation stabilities.
  • FIG. 1 displays comparative data on the concentrations of antioxidant additives BHT and the alkylphenol composition of the present invention added to the easiest-to-oxidize biodiesel fuel produced by transesterification of sunflower oil to achieve equal oxidation stabilities.
  • the alkylphenol composition was added to the biodiesel fuel to achieve the minimal concentration of the alkylphenol composition (20 ppm, or 0.002 mass %) based on the entire biodiesel fuel solution.
  • the data displayed in FIG. 1 prove that the amount of the antioxidant additive of the present invention providing the same oxidation stability is approximately 2.5 times as low.
  • the minimal oxidation stability level of a biodiesel fuel at 110° C. should be at least 6 h.
  • Table 3 compiles data on the concentrations of antioxidant additives BHT and the alkylphenol composition of the present invention added to biodiesel fuels produced by transesterification of sunflower oil, soybean oil, and dietary fat to achieve a tailored oxidation stability level of the biodiesel fuel of at least 6 h at 110° C. according to DIN EN 14214.
  • antioxidant additives BHT and the alkylphenol composition of the present invention affect the shelf life of the easiest-to-oxidize biodiesel fuel which was manufactured via transesterification of sunflower oil. Oxidation stability was measured in Rancimat storage tests at 110° C. in the beginning of the test and on the 7th day, 14th day, 21st day, 27th day, and 35th day of the test.
  • FIG. 2 shows graphic representation of the results.
  • composition claimed for improving the storage stability of biodiesel fuel and the method for improving the stability of biodiesel fuel with the use of this composition provide a considerable lengthening of the shelf life time of the biodiesel fuel with a reduced amount of the additive.

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  • 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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Liquid Carbonaceous Fuels (AREA)
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  • Fats And Perfumes (AREA)
US13/195,363 2011-03-18 2011-08-01 Antioxidant additive composition, a solution thereof, and a method for improving the storage stability of biodiesel fuel (variants) Abandoned US20120233912A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140264199A1 (en) * 2013-03-15 2014-09-18 E I Du Pont De Nemours And Company Stabiilzed fluids for industrial applications

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RU2476585C1 (ru) * 2012-03-07 2013-02-27 Открытое Акционерное Общество "Стерлитамакский Нефтехимический Завод" Композиция антиокислительной присадки, ее раствор и способ повышения стабильности биодизельного топлива при хранении (варианты)
JP6070079B2 (ja) * 2012-11-02 2017-02-01 Dic株式会社 ヒンダードフェノールの製造方法

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US6800228B1 (en) * 1998-09-22 2004-10-05 Albemarle Corporation Sterically hindered phenol antioxidant granules having balanced hardness
WO2008121526A1 (en) * 2007-03-28 2008-10-09 Albemarle Corporation Antioxidant blends for fatty acid methyl esters (biodiesel)
US20100107481A1 (en) * 2007-03-28 2010-05-06 Albemarie Corporation Antioxidant blends for fatty acid methyl esters (biodiesel)
WO2009029373A1 (en) * 2007-08-24 2009-03-05 Albemarle Corporation Antioxidant blends suitable for use in biodiesels
US20110023351A1 (en) * 2009-07-31 2011-02-03 Exxonmobil Research And Engineering Company Biodiesel and biodiesel blend fuels

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140264199A1 (en) * 2013-03-15 2014-09-18 E I Du Pont De Nemours And Company Stabiilzed fluids for industrial applications

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BRPI1104326A2 (pt) 2013-05-21
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AR082550A1 (es) 2012-12-19

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