WO2001062876A1 - Compositions - Google Patents
Compositions Download PDFInfo
- Publication number
- WO2001062876A1 WO2001062876A1 PCT/GB2001/000749 GB0100749W WO0162876A1 WO 2001062876 A1 WO2001062876 A1 WO 2001062876A1 GB 0100749 W GB0100749 W GB 0100749W WO 0162876 A1 WO0162876 A1 WO 0162876A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel composition
- composition according
- alcohol
- fatty acid
- fuel
- Prior art date
Links
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
- C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular 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
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
- C10L1/026—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for compression ignition
-
- 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
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
-
- 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
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal
-
- 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
- C10L1/18—Organic compounds containing oxygen
- C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
-
- 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
- C10L1/19—Esters ester radical containing compounds; ester ethers; carbonic acid esters
- C10L1/191—Esters ester radical containing compounds; ester ethers; carbonic acid esters of di- or polyhydroxyalcohols
-
- 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
- C10L1/192—Macromolecular compounds
- C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
- C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
-
- 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
- C10L1/224—Amides; Imides carboxylic acid amides, imides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Definitions
- This invention relates to a novel fuel composition and to methods of their preparation and use.
- Diesel fuel is an important petroleum product and is depended upon for powering the engines of ships, trains, trucks, etc. Since petroleum is a non-renewable resource and because the burning of diesel in an internal combustion engine produces high levels of pollutants, especially particulates, much effort has gone into the development of alternative fuels from renewable sources.
- biodiesel fuel has been considered as an alternative to petroleum based diesel.
- vegetable oils have been added to petroleum diesel to try and at least mitigate some of the problems with petroleum diesel.
- Such vegetable oil may originate from a variety of sources, such as soybean oil, rape seed oil, palm oil and sunflower oil.
- Biodiesel has a much higher cloud point (about 0°C) than petroleum diesel and also has a much higher pour point (about -2°C).
- cloud point about 0°C
- pour point about -2°C
- Biodiesel fuels are also known to cause much more wear and tear on engines and have higher particulate emissions than conventional petroleum diesel fuel.
- a fuel composition comprising biodiesel and a surfactant, characterised in that the surfactant comprises a mixture of an alkanolamide, an alkoxylated alcohol and an alkoxylated fatty acid or a derivative thereof.
- the diesel component of the fuel composition can comprise up to 100% v/v biodiesel.
- the diesel component is preferably a mixture of petroleum diesel and biodiesel.
- Such a mixture can comprise up to 20% v/v biodiesel, for example from 1 to 20% v/v, preferably from 5 to 20% v/v, more preferably from 10 to 20%o v/v.
- the fuel composition also comprises an alcohol e.g. an alkanol, such as ethanol.
- an alcohol e.g. ethanol
- the alcohol may be present in an amount of from 1 to 10% v/v, preferably 5 to 10% v/v and more preferably 1 to 3% v/v.
- the alkanolamide is preferably an ethanolamide and more preferably a diethanolamide.
- the diethanolamides and particularly the super diethanolamides are preferably a diethanolamide in which the nitrogen is substituted by an alkyl substituent e.g. alkyl C 5 to C 20 , preferably C 8 to C 18 , more preferably C 10 to C 18 .
- the most preferred diethanolamide is a C] 8 substituent i.e. oleic diethanolamide.
- super amide normally refers to an amide derived by reaction of substantially stoichiometric proportions of diethanolamine with a fatty ester, typically a methyl or glyceryl ester.
- the alkoxylated alcohol is preferably an ethoxylated alcohol. It is essential that the ethoxylated alcohol is an oil soluble alcohol. Therefore, alkanols are preferred and these may be primary, secondary or tertiary alkanols and especially primary alkanols. As the oil solubility of the alcohol may vary with the carbon chain length of the ethoxylated alkanol, the alkanol is preferably a C 5 to C 22 alkanol, more preferably C $ to C 15 alkanol.
- the ethoxylated alcohol may comprise a mixture of alkanols or a mixture in which one alkanol will predominate.
- the most preferred alkanol is predominantly a C 9 to Cj j alkanol.
- the degree of ethoxylation of the alcohol may be varied and the oil solubility will, generally, decrease with the increase in the degree of ethoxylation. It is preferred that the ethoxylate to alcohol ratio is greater than 2. More preferably, the ethoxylate to alcohol ratio is from between 1 and 10, preferably between 1 and 5, more preferably between 1 and 3 and especially between 2 and 3.
- a commercially available ethoxylated alcohol is especially preferred in which the ethoxylate to alcohol ratio is 2.75. Such an alcohol ethoxylate is available as NEODOL 91/2.5.
- the fatty acid ethoxylate may comprise any conventionally known fatty acid ethoxylate or a derivative thereof.
- the fatty acid ethoxylate may be derived from a fatty acid having from 8 to 20 carbon atoms, preferably from 10 to 18.
- the fatty acid may be a saturated or unsaturated fat.
- alkoxylated fatty acid or a derivative thereof we mean a derivative of the acid, for example, an ester e.g. an alkyl ester.
- the most preferred fatty acid is an unsaturated fatty acid and especially C 18j oleic acid or a derivative thereof, such as an oleate ester, e.g. an alkyl Cj to Q oleate.
- Derivatives which may be mentioned include an ethyl oleate or a methyl oleate.
- the fatty acid when ethanol is present then the fatty acid is greater than C 15 and especially oleic.
- the degree of ethoxylation is chosen to optimise performance in the blend with the other two selected surfactants and may be from 1 to 20, but more preferably from 5 to 18.
- a suitable product within this range would be, for example that derived from the addition of 7 molecules of ethylene oxide to 1 mole of oleic acid.
- the preferred additive of this invention is a non-ionic surfactant and preferably a blend of surfactants. It is a preferred feature of this invention that the surfactants be selected by their nature and concentration that the additive (as well as any water or other non-fuel liquid present) be solubilised within the fuel. For this purpose it is convenient to have regard to the hydrophilic-lipophilic balance (HLB) of the surfactant, the value being calculated according to the expression.
- HLB hydrophilic-lipophilic balance
- HLB mol. wt of hydrophilic chain x 20 total mol. wt
- the values will depend on the length of the hydrophilic chain, typically an ethoxylate chain.
- the length of the chain will increase the extent of solubilisation because of a greater ability to solubilise.
- a blend of surfactants is preferred, preferably by selecting one with an HLB appropriate to the fuel, say 10 to 18 for hydrocarbon fuel, most preferably 13.
- an HLB value of the surfactant is between 3 and 7, most preferably about 4.
- the invention has the ability to unify the HLB requirements of any liquid fuel which in turn allows for one dose to be used in any fuel from C5 carbon chains up.
- the benefit being the amount of treatment directly related to the co-solvency ability.
- the ethoxylate of the fatty acid makes up about 25% by volume of the additive and further preferably the alcohol ethoxylate comprises 50% by volume of the additive.
- An additive of the invention may be added to a hydrocarbon fuel, e.g. diesel, petrol or alcohol, such as ethanol which may or may not be contaminated with water.
- a hydrocarbon fuel e.g. diesel, petrol or alcohol, such as ethanol which may or may not be contaminated with water.
- the invention is seen to particularly good effect when added to synthetic fuels based on low fraction oils.
- the presence of the additive of the invention ensures that the fuel composition forms a consistent stable homogenous composition and creates a monolayer simultaneously a result of which leads to a better more complete burn which reduces pollution and increases miles per gallon.
- the concentration of the additive in the fuel can be very low, typically the additive to fuel ratio may be of the order of 0.5 - 50:1200, preferably about 0.5-50:1000, more preferably 1-30:1000 and most preferably 30:1000. There appears to be no technical or economic benefit in adding more unless a co-solvent dual action is required, when the priority will be dosage against performance.
- the fuel is considered to comprise the sum of any petroleum diesel, biodiesel and alcohol present in the composition.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001235764A AU2001235764A1 (en) | 2000-02-26 | 2001-02-22 | Compositions |
EP01907896A EP1257616A1 (en) | 2000-02-26 | 2001-02-22 | Compositions |
BR0108703-7A BR0108703A (en) | 2000-02-26 | 2001-02-22 | Combustible composition, method of operating an internal combustion engine and using oleic acid or a derivative thereof. |
MXPA02008272A MXPA02008272A (en) | 2000-02-26 | 2001-02-22 | Compositions. |
PL01357388A PL357388A1 (en) | 2000-02-26 | 2001-02-22 | Compositions |
CA002400944A CA2400944A1 (en) | 2000-02-26 | 2001-02-22 | Compositions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0004518.7A GB0004518D0 (en) | 2000-02-26 | 2000-02-26 | Compositions |
GB0004518.7 | 2000-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001062876A1 true WO2001062876A1 (en) | 2001-08-30 |
Family
ID=9886428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/000749 WO2001062876A1 (en) | 2000-02-26 | 2001-02-22 | Compositions |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1257616A1 (en) |
CN (1) | CN1406269A (en) |
AU (1) | AU2001235764A1 (en) |
BR (1) | BR0108703A (en) |
CA (1) | CA2400944A1 (en) |
GB (1) | GB0004518D0 (en) |
MX (1) | MXPA02008272A (en) |
PL (1) | PL357388A1 (en) |
WO (1) | WO2001062876A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7208022B2 (en) | 2002-03-14 | 2007-04-24 | The Lubrizol Corporation | Ethanol-diesel fuel composition and methods thereof |
GB2445355A (en) * | 2007-01-05 | 2008-07-09 | Biofuel Systems Group Ltd | Fuel and method of production thereof |
US8147566B2 (en) | 1999-11-23 | 2012-04-03 | Krogh James A | Fuel additive, additive-containing fuel compositions and method of manufacture |
CN102851006A (en) * | 2012-09-30 | 2013-01-02 | 中国石油集团西部钻探工程有限公司 | Bio-oil lubricant for drilling wells and preparation method of bio-oil lubricant |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7279018B2 (en) | 2002-09-06 | 2007-10-09 | Fortum Oyj | Fuel composition for a diesel engine |
US8022258B2 (en) | 2005-07-05 | 2011-09-20 | Neste Oil Oyj | Process for the manufacture of diesel range hydrocarbons |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2217229A (en) * | 1988-04-25 | 1989-10-25 | Enersolve Chemical Company Lim | Solubilising composition |
WO1998017745A1 (en) * | 1996-10-18 | 1998-04-30 | Hamelin Holdings Limited | Fuel composition |
WO1998056878A1 (en) * | 1997-06-09 | 1998-12-17 | Donald Murray Craig | Additives enabling blending of polar and non-polar fuel components |
WO1999020715A1 (en) * | 1997-10-20 | 1999-04-29 | Pure Energy Corporation | Polymeric fuel additive and method of making the same, and fuel containing the additive |
WO1999052994A1 (en) * | 1998-04-09 | 1999-10-21 | Coval Technologies Limited | Solubilising compositon |
WO1999060078A1 (en) * | 1998-05-15 | 1999-11-25 | Lundin Investments (Proprietary) Limited | A composition for mixing oil and water to form a solution |
US6017369A (en) * | 1998-11-23 | 2000-01-25 | Pure Energy Corporation | Diesel fuel composition |
-
2000
- 2000-02-26 GB GBGB0004518.7A patent/GB0004518D0/en not_active Ceased
-
2001
- 2001-02-22 CA CA002400944A patent/CA2400944A1/en not_active Abandoned
- 2001-02-22 EP EP01907896A patent/EP1257616A1/en not_active Withdrawn
- 2001-02-22 BR BR0108703-7A patent/BR0108703A/en not_active IP Right Cessation
- 2001-02-22 CN CN01805562A patent/CN1406269A/en active Pending
- 2001-02-22 MX MXPA02008272A patent/MXPA02008272A/en not_active Application Discontinuation
- 2001-02-22 WO PCT/GB2001/000749 patent/WO2001062876A1/en not_active Application Discontinuation
- 2001-02-22 PL PL01357388A patent/PL357388A1/en unknown
- 2001-02-22 AU AU2001235764A patent/AU2001235764A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2217229A (en) * | 1988-04-25 | 1989-10-25 | Enersolve Chemical Company Lim | Solubilising composition |
WO1998017745A1 (en) * | 1996-10-18 | 1998-04-30 | Hamelin Holdings Limited | Fuel composition |
WO1998056878A1 (en) * | 1997-06-09 | 1998-12-17 | Donald Murray Craig | Additives enabling blending of polar and non-polar fuel components |
WO1999020715A1 (en) * | 1997-10-20 | 1999-04-29 | Pure Energy Corporation | Polymeric fuel additive and method of making the same, and fuel containing the additive |
WO1999052994A1 (en) * | 1998-04-09 | 1999-10-21 | Coval Technologies Limited | Solubilising compositon |
WO1999060078A1 (en) * | 1998-05-15 | 1999-11-25 | Lundin Investments (Proprietary) Limited | A composition for mixing oil and water to form a solution |
US6017369A (en) * | 1998-11-23 | 2000-01-25 | Pure Energy Corporation | Diesel fuel composition |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8147566B2 (en) | 1999-11-23 | 2012-04-03 | Krogh James A | Fuel additive, additive-containing fuel compositions and method of manufacture |
US7208022B2 (en) | 2002-03-14 | 2007-04-24 | The Lubrizol Corporation | Ethanol-diesel fuel composition and methods thereof |
GB2445355A (en) * | 2007-01-05 | 2008-07-09 | Biofuel Systems Group Ltd | Fuel and method of production thereof |
CN102851006A (en) * | 2012-09-30 | 2013-01-02 | 中国石油集团西部钻探工程有限公司 | Bio-oil lubricant for drilling wells and preparation method of bio-oil lubricant |
Also Published As
Publication number | Publication date |
---|---|
EP1257616A1 (en) | 2002-11-20 |
BR0108703A (en) | 2002-12-10 |
MXPA02008272A (en) | 2004-06-30 |
CA2400944A1 (en) | 2001-08-30 |
AU2001235764A1 (en) | 2001-09-03 |
PL357388A1 (en) | 2004-07-26 |
CN1406269A (en) | 2003-03-26 |
GB0004518D0 (en) | 2000-04-19 |
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