CN102112587B

CN102112587B - Liquid fuel compositions

Info

Publication number: CN102112587B
Application number: CN200980130657.7A
Authority: CN
Inventors: S·J·史密斯; M·C·索斯比; N·P·泰特
Original assignee: Shell Internationale Research Maatschappij BV
Current assignee: Shell Internationale Research Maatschappij BV
Priority date: 2008-07-31
Filing date: 2009-07-29
Publication date: 2014-03-26
Anticipated expiration: 2029-07-29
Also published as: AU2009275892A1; AU2009275892B2; JP2011529517A; WO2010012763A1; BRPI0916886A2; CN102112587A; US20100024287A1; EP2307529A1; CA2732160A1; SG193166A1

Abstract

The present invention provides a liquid fuel composition comprising: a base fuel suitable for use in an internal combustion engine; and one or more poly (hydroxycarboxylic acid) derivative having a terminal acid group having formula (III): [Y-CO [O-A-CO]n-Zp]m-X (III) wherein Y is hydrogen or optionally substituted hydrocarbyl group, A is a divalent optionally substituted hydrocarbyl group, n is from 1 to 100, m is 1 or 2, Z is an optionally substituted divalent bridging group, p is 0 or 1, and X is terminal acid group or a group carrying a terminal acid group, wherein the terminal acid group is selected from carboxylic acid, carboxymethyl, sulphate, sulphonate, phosphate and phosphonate.

Description

Liquid fuel combination

Technical field

The present invention relates to comprise the liquid fuel combination that major part is applicable to the basic fuel of explosive motor, be specially and comprise major part and be applicable to the basic fuel of explosive motor and the liquid fuel combination of hyper-dispersant.

Background technology

EP 0164817A2 discloses a kind of tensio-active agent that is applicable to being stabilized in the solid dispersion in organic liquid and oil/water emulsion, and described tensio-active agent comprises with the carboxylicesters or the acid amides that are selected from the terminal strong acid of carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical.The preferred substance of this class tensio-active agent is poly-(the hydroxyl alkanecarboxylic acid) with direct or strong acid that be connected with terminal hydroxyl groups or carboxylic acid group by linking group.Wherein there is no to disclose the purposes of this class tensio-active agent in fuel.

EP 0233684A1 discloses ester or the polyester that is suitable as the solid dispersion in organic liquid, and described ester or polyester have: (i) contain the terminal group of at least two aliphatic carbon-to-carbon double bonds, and (ii) acid or alkaline amino.Wherein there is no to disclose the purposes of this class tensio-active agent in fuel.

GB 2197312A discloses a kind of oil-soluble dispersant additives, and wherein said dispersant additives is the poly-(C of preparation according to the following procedure ₅-C ₉lactone) adducts: first make C ₅-C ₉lactone reacts to form middle adducts with polyamines, polyvalent alcohol or amino alcohol, and in the middle of then making, adducts reacts with aliphatic hydrocarbyl monocarboxylic acid or the dicarboxylic acid acylating reagent with about 1-165 total carbon atom.The purposes of described dispersant additives in lubricating oil and fuel also disclosed in GB2197312A.

EP 0802255A2 discloses the method for acylated nitrogen compound and the described compound of preparation of hydroxyl, and described nitrogen compound can be used as for lubricating oil and the low chlorine additive that is generally the fuel of liquid.

WO 00/34418A1 discloses poly-(hydroxycarboxylic acid) acid amides or the ester derivative purposes as oiliness additive in fuel composition.In WO 00/34418A1, disclose in addition and used wherein disclosed poly-(hydroxycarboxylic acid) acid amides or ester derivative also may realize one or more effects, as entrance system spatter property (intake valve, fuel injector, carburettor), combustion chamber spatter property (keep in each case clean or have cleaning effect or both), anticorrosive (comprising antirust) with reduce or eliminate valve sticking.

Now have been found that application also can provide astoundingly benefit in improvement with poly-(hydroxycarboxylic acid) derivative of terminal acidic group aspect the oilness of their liquid fuel combination.

Summary of the invention

The invention provides a kind of liquid fuel combination, described liquid fuel combination comprises:

-be applicable to the liquid base fuel of explosive motor; With

-one or more have poly-(hydroxycarboxylic acid) derivative with terminal strong acid of general formula (III):

[Y-CO[O-A-CO] _n-Z _p] _m-X (III)

Wherein Y is hydrogen or the optional alkyl replacing, A is the optional bivalent hydrocarbon radical replacing, n is 1-100, m is 1 or 2, Z is the optional divalent abutment replacing, p is 0 or 1, and X is terminal acidic group or with the group of terminal acidic group, wherein said terminal acidic group is selected from carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical.

The present invention also provides a kind of method of preparing liquid fuel combination of the present invention, comprises that poly-(hydroxycarboxylic acid) derivative with terminal acidic group mixes with the basic fuel that is applicable to explosive motor by one or more.

The present invention also provides a kind of method that operates explosive motor, and described method comprises in the combustion chamber of engine introduces liquid fuel combination of the present invention.

Embodiment

Liquid fuel combination of the present invention comprises basic fuel and one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group that is applicable to explosive motor.Conventionally, the basic fuel that is applicable to explosive motor is gasoline or diesel oil fuel, and therefore liquid fuel combination of the present invention is generally gasoline composition or diesel fuel composition.

Poly-(hydroxycarboxylic acid) derivative with terminal acidic group of application in the present invention also can be called as hyper-dispersant.

In liquid fuel combination of the present invention, one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group are for having poly-(hydroxycarboxylic acid) derivative with terminal acidic group of general formula (III):

[Y-CO[O-A-CO] _n-Z _p] _m-X (III)

In general formula (III), A is preferably the below divalence straight or branched alkyl for general formula (I) and (II).

That is to say, in general formula (III), A is preferably aromatics, aliphatic series or the alicyclic straight or branched bivalent hydrocarbon radical of optional replacement.More preferably, A is arylidene, alkylidene group or alkenylene, particularly contains 4-25 carbon atom, more preferably 6-25 carbon atom, more preferably 8-24 carbon atom, 10-22 carbon atom and most preferably be arylidene, alkylidene group or the alkenylene of 12-20 carbon atom more preferably.

Preferably, in the compound of described general formula (III), have at least 4 carbon atoms, more preferably at least 6 carbon atoms and even more preferably 8-14 carbon atom be directly connected between carbonyl and the Sauerstoffatom derived from hydroxyl.

In the compound of general formula (III), in group A, optional substituting group is preferably selected from hydroxyl, halogen or alkoxyl group, particularly C _1-4alkoxyl group.

In general formula (III) (and general formula (I)), n is 1-100.Preferably, under the scope of n, be limited to 1, more preferably 2, even more preferably 3; Preferably, the range limit of n is 100, more preferably 60, more preferably 40, more preferably 20, and 10 (be even more preferably that n can be selected from following arbitrary scope: 1-100; 2-100; 3-100; 1-60; 2-60; 3-60; 1-40; 2-40; 3-40; 1-20; 2-20; 3-20; 1-10; 2-10; And 3-10).

In general formula (III), Y is preferably above the alkyl for optional replacement general formula (I) Suo Shu.

That is to say, in general formula (III), the optional alkyl Y replacing is preferably and contains at the most 50 carbon atoms, more preferably aryl, the alkyl or alkenyl of 7-25 carbon atom.For example, the optional alkyl Y replacing can be selected from heptyl, octyl group, undecyl, lauryl, heptadecyl, heptadecene base, 17 carbon dialkylenes, stearyl, oil base and sub-oil base aptly.

Here other example of the alkyl Y of the described optional replacement in general formula (III) comprises: C _4-8cycloalkyl is as cyclohexyl; Multi-ring alkyl as derived from naturally occurring acid as many cyclic terpenes thiazolinyl of sylvic acid; Aryl is as phenyl; Aralkyl is as tolyl; With polyaryl as naphthyl, xenyl, to acetyl phenalgin

acid sodium and phenyl methyl phenyl.

In the present invention; the alkyl Y of the optional replacement in general formula (III) can contain one or more functional groups, as carbonyl, carboxyl, nitro, hydroxyl, halogen, alkoxyl group, amino (being preferably tertiary amino (not having N-H to connect)), oxygen, cyano group, alkylsulfonyl and sulfinyl.Except hydrogen, the most of atom in substituted hydrocarbon radical is generally carbon, and heteroatoms (as oxygen, nitrogen and sulphur) conventionally only accounts for the minority (approximately 33% or still less) of existing whole non-hydrogen atoms.

Those skilled in the art will understand; in substituted hydrocarbon radical Y, functional group will substitute a hydrogen atom of alkyl as hydroxyl, halogen, alkoxyl group, nitro and cyano group, and in substituted hydrocarbon radical functional group as carbonyl, carboxyl, uncle amino (N-), oxygen, alkylsulfonyl and sulfinyl by substitute alkyl-CH-or-CH ₂-part.

More preferably, the alkyl Y in general formula (III) does not replace or selectedly from following group, replaces: hydroxyl, halogen or alkoxyl group, C even more preferably _1-4alkoxyl group.

Most preferably, the alkyl Y of the optional replacement in general formula (III) be stearyl, 12-hydroxyl stearyl, oil base or 12-hydroxyl oil base and those derived from naturally occurring oil as the group of ready denier oil acid.

In general formula (III), Z is the optional divalent abutment replacing, and preferably has general formula-X ^z-B-Y ^z _q-, X wherein ^zbe selected from oxygen, sulphur or general formula-NR ¹-group, R wherein ¹as mentioned below, B as mentioned below, Y ^zbe selected from oxygen or general formula-NR ¹-group, R wherein ¹as mentioned below, and q be 0 or 1.If q is 1 and X ^zand Y ^zbe general formula-NR ¹-group, two R ¹group can form the single alkyl that connects two nitrogen-atoms.

Aptly, Z is the divalent abutment of the optional replacement that is connected with carbonyl by nitrogen-atoms, preferably by general formula (IV), is represented:

R wherein ¹for hydrogen or alkyl, and B is the optional alkylidene group replacing.

Can represent R ¹the example of alkyl comprise methyl, ethyl, n-propyl, normal-butyl and octadecyl.

The example of alkylidene group that can represent the optional replacement of B comprises ethylidene, trimethylene, tetramethylene and hexamethylene.

Comprise-the NHCH of example of preferred Z part in general formula (III) ₂cH ₂-,-NHCH ₂c (CH ₃) ₂cH ₂-and-NH (CH ₂) ₃-.

In general formula (III), X is terminal acidic group or with the group of terminal acidic group, wherein said terminal acidic group is selected from carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical.If X is that it is preferably general formula-Z with the group of terminal acidic group ¹-X ¹group, Z wherein ¹for difunctionality connects compound, as be selected from the compound of polyamines, polyvalent alcohol, azanol, or Z group is as hereinbefore defined, and X ¹for being selected from following terminal acidic group: carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical; More preferably, if X is the group with terminal acidic group, in general formula (III) p be 0 and X be general formula-Z ¹-X ¹group.

Terminal acidic group can exist with the form of the form of free acid or the salt of described acid.If the form that terminal acidic group is salt, it can be aptly for example reacts formation with ammonia, organic bases as amine and amino alcohol and mineral alkali by the terminal acid in free acid form and alkali.If the acidic group in terminal acidic group is salt, the cationic example being applicable to comprises that metallic cation is as sodium, potassium and calcium and ammonium ion, as ammonium ion (NH ₄ ⁺), N (CH ₃) ₄ ⁺and NH (CH ₃) ₄ ⁺.

One or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group can obtain by the reaction of following material:

Poly-(hydroxycarboxylic acid) of general formula (I):

Y-CO[O-A-CO] _n-OH (I)

Wherein Y is hydrogen or the optional alkyl replacing, and A is the optional bivalent hydrocarbon radical replacing, and n is 1-100;

With the group of the terminal carboxylic acid radical reaction of poly-(hydroxycarboxylic acid) with general formula (I) and be selected from the compound of the terminal acidic group of carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical;

Terminal acidic group precursor; Or

Be connected compound with the difunctionality of terminal acidic group precursors reaction subsequently.

Just as used herein, term " alkyl " representative removes the formed group of one or more hydrogen atoms (when removing a plurality of hydrogen atom, not necessarily removing from same carbon atom) from the carbon atom of hydrocarbon.

Alkyl can be aromatics, aliphatic series, non-annularity or cyclic group.Alkyl is preferably aryl, cycloalkyl, alkyl or alkenyl, and in this case, they can be straight or branched group.

Representative alkyl comprises phenyl, naphthyl, methyl, ethyl, butyl, amyl group, methyl amyl, hexenyl, dimethyl hexyl, octenyl, cyclooctene base, methyl cyclooctene base, diformazan basic ring octyl group, ethylhexyl, octyl group, iso-octyl, dodecyl, cetene base, eicosyl, ceryl, triacontyl and phenylethyl.

In the present invention, term " the optional alkyl replacing " is used for describing and optionally contains one or more alkyl containing 'inertia' heteroatom functional group.'inertia' refers to that described functional group does not affect the function of compound with any obvious degree.

Here in general formula (I), the optional alkyl Y replacing is preferably containing 50 carbon atoms at the most, more preferably aryl, the alkyl or alkenyl of 7-25 carbon atom.For example, the optional alkyl Y replacing can be selected from heptyl, octyl group, undecyl, lauryl, heptadecyl, heptadecene base, 17 carbon dialkylenes, stearyl, oil base and sub-oil base aptly.

Here other example at the optional alkyl Y replacing described in general formula (I) comprises: C _4-8cycloalkyl is as cyclohexyl; Multi-ring alkyl as derived from naturally occurring acid as many cyclic terpenes thiazolinyl of sylvic acid; Aryl is as phenyl; Aralkyl is as phenmethyl; With polyaryl as naphthyl, xenyl, to acetyl phenalgin

acid sodium and phenyl methyl phenyl.

In the present invention, the optional alkyl Y replacing can contain one or more functional groups, as carbonyl, carboxyl, nitro, hydroxyl, halogen, alkoxyl group, uncle's amino (connecting without N-H), oxygen, cyano group, alkylsulfonyl and sulfinyl.Except hydrogen, the most of atom in substituted hydrocarbon radical is generally carbon, and heteroatoms (for example oxygen, nitrogen and sulphur) conventionally only accounts for the minority (approximately 33% or still less) of existing whole non-hydrogen atoms.

In general formula (I), alkyl Y does not more preferably replace or selectedly from following group, replaces: hydroxyl, halogen or alkoxyl group, C even more preferably _1-4alkoxyl group.

Most preferably, in general formula (I) the optional alkyl Y replacing be stearyl, 12-hydroxyl stearyl, oil base, 12-hydroxyl oil base or derived from naturally occurring oil as the group of ready denier oil acid.

The preparation of poly-(hydroxycarboxylic acid) and its derivative is known, and for example in EP0164817, states in prior art.

Poly-(hydroxycarboxylic acid) of general formula (I) can according to known method optionally under catalyzer exists the transesterify of one or more hydroxycarboxylic acids by general formula (II) prepare:

HO-A-COOH (II)

Wherein A is the optional bivalent hydrocarbon radical replacing.Described method is for example stated in US 3996059, GB1373660 and GB 1342746.

Chain terminator in described transesterify can be non-hydroxyl carboxylic acid.

Hydroxy-acid group in hydroxyl in hydroxycarboxylic acid and hydroxycarboxylic acid or non-hydroxyl carboxylic acid can be suitably primary, secondary or tertiary position.

The transesterify of hydroxycarboxylic acid and non-hydroxyl carboxylic acid chain terminator can be fallen formed water and implements by optionally heat original material and azeotropic in as toluene or dimethylbenzene at suitable hydrocarbon solvent.Reaction can be at the most-250 ℃ of temperature, under the reflux temperature at solvent, implement aptly.

When hydroxyl in hydroxycarboxylic acid is during in secondary position or tertiary position, the temperature adopting should the high degree to acid molecule is dewatered.

Can comprise that the catalyzer of transesterify is as tosic acid, zinc acetate, zirconium naphthenate or tetrabutyl titanate, object is improve to the speed of reaction under fixed temperature or reduce the required temperature of given speed of reaction.

In general formula (I) and compound (II), A is preferably aromatics, aliphatic series or the alicyclic straight or branched bivalent hydrocarbon radical of optional replacement.Preferably, A is arylidene, alkylidene group or alkenylene, particularly contains 4-25 carbon atom, more preferably 6-25 carbon atom, more preferably 8-24 carbon atom, 10-22 carbon atom and most preferably be arylidene, alkylidene group or the alkenylene of 12-20 carbon atom more preferably.

Preferably, in described general formula (I) and compound (II), have at least 4 carbon atoms, more preferably at least 6 carbon atoms and even more preferably 8-14 carbon atom be directly connected between carbonyl and the Sauerstoffatom derived from hydroxyl.

In general formula (I) and compound (II), in group A, optional substituting group is preferably selected from hydroxyl, halogen or alkoxyl group, more preferably C _1-4alkoxyl group.

In the hydroxycarboxylic acid of general formula (II), hydroxyl is preferably secondary hydroxyl.

The example of suitable hydroxycarboxylic acid has 9-oxystearic acid, 10 hydroxy stearic acid, 12-oxystearic acid, 12-hydroxyl-9-oleic acid (ricinolic acid), 6 hydroxycaproic acid, is preferably 12-oxystearic acid.Industry 12-oxystearic acid (hydrogenated castor oil fatty) conventionally containing the stearic acid of 15wt% at the most and other non-hydroxyl carboxylic acid as impurity, and can without further mixing in the situation that, apply aptly, take and produce the polymkeric substance that molecular weight is about 1000-2000.

When non-hydroxyl carboxylic acid is joined separately in reaction, the polymkeric substance or the required ratio of oligopolymer that produce given molecular weight can be determined by simple experiment or by calculating by those skilled in the art.

In general formula (I) and compound (II), group (O-A-CO-) is preferably 12-oxygen stearyl, 12-oxygen oil base or 6-oxygen caproyl.

Poly-(hydroxycarboxylic acid) of the preferred general formula (I) reacting with amine comprises poly-(oxystearic acid) and gathers (hydroxy oleate).

Have with the group of the terminal carboxylic acid radical reaction of poly-(hydroxycarboxylic acid) of general formula (I) and the suitable combination thing that is selected from the terminal acidic group of carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical and comprise: alpha-amino group-or Alpha-hydroxy-alkanecarboxylic acid, as Padil and oxyacetic acid, and amino-and hydroxyl-organic sulfonic acid or phosphonic acids, as aminoethane sulphonic acid; Suitable terminal acidic group precursor is five phosphorus oxide and SULPHURYL CHLORIDE; And the suitable difunctionality that can form linking group between polyester and terminal acidic group to connect compound be polyamines, polyvalent alcohol, oxyamine, and Z group is as described above.

Have with the group of the terminal carboxylic acid radical reaction of poly-(hydroxycarboxylic acid) of general formula (I) and be selected from compound, the terminal acidic group precursor of the terminal acidic group of carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical or be connected with the difunctionality of terminal acidic group precursors reaction subsequently compound and general formula (I) to gather reacting between (hydroxycarboxylic acid) be known, and for example in EP 0164817, state in prior art.

The material that preferred poly-(hydroxycarboxylic acid) derivative with terminal acidic group is less than 60mgKOH/g, is more preferably less than 50mg.KOH/g, is even more preferably less than 40mg.KOH/g and is most preferably less than 30mg.KOH/g for those TBN (total basicnumber) values of measuring each by ASTM D 4739 in the present invention.Aptly, with each TBN value of measuring by ASTM D4739 of poly-(hydroxycarboxylic acid) derivative of terminal acidic group, being less than 5mg.KOH/g, is more appropriately 2mg.KOH/g or less.

The material that is preferably less than 70mgKOH/g, is more preferably less than 60mg.KOH/g, is even more preferably less than 50mg.KOH/g and is most preferably less than 40mg.KOH/g for those each acid number with poly-(hydroxycarboxylic acid) derivative of terminal acidic group in the present invention.

In liquid fuel combination of the present invention, if applied basic fuel is gasoline, gasoline can be any gasoline that is adapted at applying in spark ignition known in the art (gasoline) class explosive motor.The gasoline that is used as basic fuel in liquid fuel combination of the present invention can be called " base gasoline " aptly.

Gasoline generally includes the mixture that boiling range is the hydrocarbon of 25-230 ℃ (EN-ISO 3405), and optimum boiling range and rectifying curve are conventionally with weather and the seasonal variation of a year.Hydrocarbon in gasoline can obtain by any method known in the art, aptly, described hydrocarbon can be by any known mode derived from straight-run spirit, the synthetic hydrocarbon of aromatic hydrocarbons mixture, heat or catalytic cracking producing, the hydrocarbon of the petroleum fractions of hydrocracking, catalytic reforming or the mixture of these materials.

The concrete rectifying curve of gasoline, hydrocarbon composition, research octane number (RON) (RON) and motor-method octane number (MON) are not critical.

Aptly, the research octane number (RON) of gasoline (RON) can be at least 80, for example 80-110, the RON of gasoline is preferably at least 90, be for example 90-110, the RON of gasoline more preferably at least 91, for example, be 91-105, the RON of gasoline even more preferably at least 92, be for example 92-103, the RON of gasoline even more preferably at least 93, for example, be 93-102, most preferably being at least 94 with the RON of gasoline, for example, is 94-100 (EN 25164); The motor-method octane number of gasoline (MON) can be suitably at least 70, be for example 70-110, the MON of gasoline is preferably at least 75, be for example 75-105, the MON of gasoline more preferably at least 80, be for example 80-100, the MON of gasoline most preferably is at least 82, for example, be 82-95 (EN 25163).

Conventionally, gasoline comprises and is selected from following one or more component: stable hydrocarbon, alkene, aromatic hydrocarbons and oxygenated hydrocarbon.Aptly, gasoline can comprise the mixture of stable hydrocarbon, alkene, aromatic hydrocarbons and optional oxygenated hydrocarbon.

Conventionally, the olefin(e) centent of gasoline is counted 0-40vol% (ASTM D1319) based on gasoline; Preferably, the olefin(e) centent of gasoline is counted 0-30vol% based on gasoline; More preferably, the olefin(e) centent of gasoline is counted 0-20vol% based on gasoline.

Conventionally, the aromaticity content of gasoline is counted 0-70vol% (ASTM D1319) based on gasoline; For example, the aromaticity content of gasoline is counted 10-60vol% based on gasoline; Preferably, the aromaticity content of gasoline is counted 0-50vol% based on gasoline, and for example, the aromaticity content of gasoline is counted 10-50vol% based on gasoline.

The benzene content of gasoline is counted 10vol% at the most based on gasoline, 5vol% at the most more preferably, particularly 1vol% at the most.

Gasoline preferably has low or ultralow sulphur content, and for example 1000ppmw (1,000,000/weight part) at the most, is preferably no more than 500ppmw, more preferably no more than 100ppmw, even more preferably no more than 50ppmw with most preferably even surpass 10ppmw.

Gasoline also preferably has low total lead content, as 0.005g/l at the most, most preferably not leaded, does not add wherein lead compound (unleaded).

When gasoline comprises oxygenated hydrocarbon, at least a portion non-oxygenated hydrocarbon will substitute oxygenated hydrocarbon.The oxygen level of gasoline can be 35wt% (EN 1601) (for example alcohol itself) at the most based on gasoline meter.For example, the oxygen level of gasoline can be 25wt% at the most, preferably 10wt% at the most.Aptly, oxide concentration will have the Cmin that is selected from following arbitrary value: 0,0.2,0.4,0.6,0.8,1.0 and 1.2wt%, and be selected from the peak concentration of following arbitrary value: 5,4.5,4.0,3.5,3.0 and 2.7wt%.

The example that can be incorporated into the oxygenated hydrocarbon in gasoline comprises alcohol, ether, ester, ketone, aldehyde, carboxylic acid and their derivative and oxygen containing heterogeneous ring compound.Preferably, can be incorporated into oxygenated hydrocarbon in gasoline and be selected from alcohol (as methyl alcohol, ethanol, propyl alcohol, iso-propyl alcohol, butanols, uncle-butanols and iso-butanols), ether (being preferably the ether that each molecule contains 5 or more carbon atoms, for example methyl-tert-butyl ether) and ester (being preferably each molecule containing the ester of 5 or more carbon atoms); Particularly preferred oxygenated hydrocarbon is ethanol.

When there is oxygenated hydrocarbon in gasoline, in gasoline, the content of oxygenated hydrocarbon can change in wide region.For example, the gasoline that comprises larger proportion oxygenated hydrocarbon at present many countries as Brazil and the U.S. commercially available, as ethanol itself and E85, and comprise compared with the gasoline of small proportion oxygenated hydrocarbon, as E10 and E5.Therefore, gasoline can contain the oxygenated hydrocarbon of 100vol% at the most.Preferably, depend on the end formulation of desirable gasoline, in gasoline, the amount of oxygenated hydrocarbon is selected from one of following: 85vol% at the most; 65vol% at the most; 30vol% at the most; 20vol% at the most; 15vol% at the most; 10vol% at the most.Aptly, gasoline can contain at least 0.5,1.0 or the oxygenated hydrocarbon of 2.0vol%.

The example of suitable gasoline comprises that olefin(e) centent is that 0-20vol% (ASTM D1319), oxygen level are that 0-5wt% (EN 1601), aromaticity content be 0-50vol% (ASTM D1319) and benzene content are the gasoline of 1vol% at the most.

Although be not critical to the invention, base gasoline of the present invention or gasoline composition can comprise one or more fuel dopes aptly in addition.Concentration and the character of the fuel dope that can comprise in base gasoline of the present invention or gasoline composition are not critical.The non-limiting example of the fuel dope of the suitable type that can comprise in base gasoline of the present invention or gasoline composition comprises antioxidant, corrosion inhibitor, purification agent, de-misting agent, antiknock dope, metal passivator, valve seat recession protective material compound, dyestuff, friction modifier, carrier fluid, thinner and markers.The suitable example of these additives is conventionally at US 5,855, states in 629.

Aptly, described fuel dope can be with one or more diluent or carrier fluid blend to form multifunctional additive for lubricating oils, and then described multifunctional additive for lubricating oils can mix with base gasoline of the present invention or gasoline composition.

(active substance) concentration of any additive existing in base gasoline of the present invention or gasoline composition is preferably 1wt% at the most, and more preferably 5-1000ppmw, is advantageously 75-300ppmw, as 95-150ppmw.

In liquid fuel combination of the present invention, if applied basic fuel is diesel oil fuel, as the diesel oil fuel of basic fuel, be included in automobile compression ignition engine and other type of engine as the diesel oil fuel of applying in peculiar to vessel, railway and stationary engine in the present invention.The diesel oil fuel that is used as basic fuel in liquid fuel combination of the present invention also can be called " diesel base fuel " aptly.

Diesel base fuel itself can comprise the mixture of two or more different diesel oil fuel components, and/or additive as described below.

These diesel oil fuels will contain one or more basic fuels, and described basic fuel can comprise liquid hydrocarbon middle runnings gas oil, for example gas oil of petroleum derivation conventionally.Depend on grade and purposes, the boiling point of these fuel is typically in common diesel range 150-400 ℃.Their density at 15 ℃ is generally 750-1000kg/m ³, be preferably 780-860kg/m ³(as ASTM D4502 or IP 365), and octane value (ASTM D613) is 35-120, more preferably 40-85.It is 290-400 ℃ with full boiling point that their initial boiling point is generally 150-230 ℃.Their kinematic viscosity (ASTM D445) at 40 ℃ can be 1.2-4.5mm suitably ²/ s.

The example of the gas oil of petroleum derivation is Swedish 1 class basic fuel, and by the specification EC1 of Swedish country definition, its density at 15 ℃ is 800-820kg/m ³(SS-EN ISO 3675, SS-EN ISO 12185), T95 is 320 ℃ or lower (SS-EN ISO 3405), and the kinematic viscosity at 40 ℃ is 1.4-4.0mm ²/ s (SS-EN ISO 3104).

Optionally, non-mineral oil base fuel also can form or be present in diesel oil fuel as biofuel or fischer-tropsch derived fuel.These fischer-tropsch fuel for example can be processed residual oil, coal or biomass derived from Sweet natural gas, natural gas liquids, oil or shale oil, oil or shale oil.

In diesel oil fuel, the consumption of fischer-tropsch derived fuel can, for the 0-100vol% of whole diesel oil fuel, be preferably 5-100vol%, more preferably 5-75vol%.For these diesel oil fuels, may wish to contain 10vol% or more, more preferably 20vol% or more, still more preferably 30vol% or more fischer-tropsch derived fuel.For these diesel oil fuels, particularly preferably contain 30-75vol% and be specially 30 or the fischer-tropsch derived fuel of 70vol%.Surplus diesel oil fuel is comprised of one or more other diesel oil fuel components.

This fischer-tropsch derived fuel component is any cut of midbarrel fuel scope, and it can be separated from (optional hydrocracking) fischer-tropsch synthesis product.Typical cut will be within the scope of petroleum naphtha, kerosene or gas oil boiling range.The fischer-tropsch products of advantageous applications within the scope of kerosene or gas oil boiling range, because these products are easy to for example processing in domestic environment.These products comprise suitably the boiling point that is greater than 90wt% 160-400 ℃, preferably to the cut of approximately 370 ℃.Fisher-Tropsch derived kerosene and the example of gas oil are stated in EP-A-0583836, WO-A-97/14768, WO-A-97/14769, WO-A-00/11116, WO-A-00/11117, WO-A-01/83406, WO-A-01/83648, WO-A-01/83647, WO-A-01/83641, WO-A-00/20535, WO-A-00/20534, EP-A-1101813, US-A-5766274, US-A-5378348, US-A-5888376 and US-A-6204426.

Fischer-tropsch products contains the different and n-paraffin that is greater than 80wt% and the more suitable 95wt% of being greater than and the aromatic hydrocarbons that is less than 1wt% conventionally, and surplus is cyclanes compound.The content of sulphur and nitrogen will be very low, and be usually less than the detectability of these compounds.For this reason, the sulphur content containing the diesel fuel composition of fischer-tropsch products may be very low.

Diesel fuel composition is preferably containing being not more than the sulphur of 5000ppmw, is more preferably no more than 500ppmw or is no more than 350ppmw or is no more than 150ppmw or is no more than 100ppmw or is no more than 70ppmw or is no more than 50ppmw or is no more than 30ppmw or is no more than 20ppmw or is most preferably not exceeding the sulphur of 15ppmw.

Diesel base fuel itself can additive (containing additive) or additive (additive-free) not.If additive, for example, at refinery place, it will contain and be selected from a small quantity for example one or more additives of antistatic agent, pipeline flow improver, FLOW IMPROVERS (for example ethylene/vinyl acetate copolymer or acrylate/copolymer-maleic anhydride), lubricant additive, antioxidant and wax anti-sedimentation agent.

Containing the diesel fuel additive of purification agent, be known to commercially available.Can in diesel oil fuel, add these additives with finite concentration, object is to reduce, remove or slow down the accumulation of engine deposits.

The example that is adapted at the purification agent applied for the diesel fuel additive of the object of the invention comprises succinimide or the succinic diamide of polyamines, for example polyisobutenyl succinimide or polyisobutylene amine succinamides, aliphatic amine, Mannich base or amine and polyolefine (as the polyisobutene) maleic anhydride that polyolefine replaces.Succinimide dispersant additives is for example stated in GB-A-960493, EP-A-0147240, EP-A-0482253, EP-A-0613938, EP-A-0557516 and WO-A-98/42808.The particularly preferred succinimide for polyolefine replacement is as polyisobutenyl succinimide.

Except purification agent, diesel fuel additive mixture can also comprise other component.Example has: lubricity enhancer; De-misting agent, for example oxyalkylated novolac polymer; Defoamer (as the polysiloxane of poly-alkane modification); Ignition improver (n-Hexadecane improving agent) (as 2-ethylhexyl nitric ether (EHN), cyclohexyl nitric ether, two-tert-butyl superoxide and those walk to the disclosed material of the 3rd hurdle the 21st row on US-A-4208190 the 2nd hurdle the 27th); Rust-preventive agent is (as propane-1 of tetrapropylene base succsinic acid, 2-glycol half ester, or the polyol ester of succinic acid derivative, on its at least one alpha-carbon atom, there is the succinic acid derivative containing the aliphatic hydrocarbyl that does not replace or replace of 20-500 carbon atom, the pentaerythritol diester of the succsinic acid that for example polyisobutene replaces); Corrosion inhibitor; Perfume compound; Anti-wear additive; Antioxidant (if phenoplast are if 2,6 di t butyl phenol or phenylenediamine are as N, N '-bis--sec-butyl-p-phenylenediamine); Metal passivator; Combustion improver; Anti static additive; Cold flow improving agent and wax anti-sedimentation agent.

Diesel fuel additive mixture can contain lubricity enhancer, particularly for example, when diesel fuel composition has low (500ppmw or few) sulphur content.In the diesel fuel composition of additive, lubricity enhancer exist concentration aptly lower than 1000ppmw, be preferably 50-1000ppmw, more preferably 70-1000ppmw.Suitable commercially available lubricity enhancer comprises ester and acidic group additive.Other lubricity enhancer is stated in patent documentation, particularly for example in low sulfur content diesel oil fuel, applies, in relevant document, with them:

The paper of-Danping Wei and H.A.Spikes: " The Lubricity of Diesel Fuels ", Wear, III (1986) 217-235;

-WO-A-95/33805, the cold flow improving agent of enhancing low-sulfur fuel oilness;

-WO-A-94/17160, some esters of Carboxylic acid and alcohol are used as the fuel dope that reduces friction in diesel motor injected system, wherein said acid has 2-50 carbon atom and described alcohol has one or more carbon atoms, particularly XU 61518.10 and diisodecyl adipate;

-US-A-5490864, some phosphorodithioic acid diester diol are as the wear-resisting oiliness additive of low sulphur diesel fuel; With

-WO-A-98/01516, some have the Alkylaromatics of at least one carboxyl being connected with their aromatic kernel and in low sulphur diesel fuel, give especially wear-resisting oilness effect.

For diesel fuel composition, also may preferably contain defoamer, more preferably with rust-preventive agent and/or corrosion inhibitor and/or the combination of oilness enhancement additive.

If not explanation in addition, in the diesel fuel composition of additive, (active substance) concentration of every kind of described binder component is preferably 10000ppmw at the most, and more preferably 0.1-1000ppmw, is advantageously 0.1-300ppmw, as 0.1-150ppmw.

In diesel fuel composition, arbitrarily (active substance) concentration of de-misting agent is preferably 0.1-20ppmw, 1-15ppmw more preferably, and still 1-10ppmw more preferably, is advantageously 1-5ppmw.(active substance) concentration of existing arbitrfary point ignition promoters is preferably 2600ppmw or lower, and more preferably 2000ppmw or lower, is suitably 300-1500ppmw.In diesel fuel composition, (active substance) concentration of purification agent is preferably 5-1500ppmw arbitrarily, and more preferably 10-750ppmw, most preferably is 20-500ppmw.

The in the situation that of diesel fuel composition, for example, fuel additive mixtures optionally contains solvent that purification agent and diesel oil fuel consistency thinner (described thinner can be mineral oil), solvent Ru You Shell company sell with trade mark " SHELLSOL ", polar solvent conventionally together with above-mentioned other component, and as ester and particularly alcohol (as hexanol, 2-Ethylhexyl Alcohol, decyl alcohol, different tridecyl alcohol) and alcohol mixture, (with the material, particularly LINEVOL 79 alcohol of trade(brand)name " LINEVOL " sale, (it is C in Ru You Shell company _7-9the mixture of primary alconol) or commercially available C _12-14alcohol mixture).

In diesel fuel composition, additive level can be 0-10000ppmw suitably, and preferably lower than 5000ppmw.

Hereinbefore, the amount of component (concentration, vol%, ppmw, wt%) is the amount of active substance, gets rid of volatile solvent/diluent material.

By mixing one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group, prepare liquid fuel combination of the present invention with the basic fuel that is applicable to explosive motor.If be gasoline with one or more basic fuels that mix with poly-(hydroxycarboxylic acid) derivative of terminal acidic group, prepared liquid fuel combination is gasoline composition; Equally, if be diesel oil fuel with one or more basic fuels that mix with poly-(hydroxycarboxylic acid) derivative of terminal acidic group, prepared liquid fuel combination is diesel fuel composition.

Preferably, the gross weight of liquid fuel combination of take is benchmark, and in liquid fuel combination of the present invention, one or more amounts with poly-(hydroxycarboxylic acid) derivative of terminal acidic group are 1ppmw (1,000,000/weight part) at least.More preferably, in liquid fuel combination of the present invention, one or more amounts with poly-(hydroxycarboxylic acid) derivative of terminal acidic group also meet following listed one or more parameters (i)-(xx):

(i) 10ppmw at least

(ii) 20ppmw at least

(iii) 30ppmw at least

(iv) 40ppmw at least

(v) 50ppmw at least

(vi) 60ppmw at least

(vii) 70ppmw at least

(viii) 80ppmw at least

(ix) 90ppmw at least

(x) 100ppmw at least

(xi) 20wt% at the most

(xii) 18wt% at the most

(xiii) 16wt% at the most

(xiv) 14wt% at the most

(xv) 12wt% at the most

(xvi) 10wt% at the most

(xvii) 8wt% at the most

(xviii) 6wt% at the most

(xix) 4wt% at the most

(xx) 2wt% at the most

Aptly, in liquid fuel combination of the present invention, one or more amounts with poly-(hydroxycarboxylic acid) derivative of terminal acidic group can be also 200ppmw at least, at least 300ppmw, at least 400ppmw, at least 500ppmw or 1000ppmw even at least.

Astoundingly, have been found that, with respect to liquid base fuel, in liquid fuel within composition, apply one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group providing obvious benefit aspect the oilness of raising liquid fuel combination, particularly when liquid fuel combination is gasoline.

Here the term of application " improved/improvement oilness ", means that the polishing scratch that application high-frequency reciprocating equipment (HFRR) produces reduces.

Have been found that in addition, with respect to take the explosive motor that liquid base fuel is fuel, in liquid fuel within composition, apply one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and also provide benefit take aspect the engine washing of the explosive motor that liquid fuel combination of the present invention is fuel, particularly at improved intake valve settling, keep clean and/or injector nozzle to keep providing benefit aspect clean-up performance.

Term " improved/improvement intake valve settling keeps clean-up performance " refers to that the sedimental weight forming on the intake valve of engine reduces with respect to not containing one or more basic fuels with poly-(hydroxycarboxylic acid) derivative of terminal acidic group.

Term " improved/improvement injector nozzle keeps clean-up performance " refers to by the loss of machine of torque of engine and measures, the sediment yield minimizing forming on the injector nozzle of engine.

Have been found that in addition, with respect to take the explosive motor that liquid base fuel is fuel, in liquid fuel within composition, apply one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and also can provide benefit improving to take aspect the fuel economy of the explosive motor that liquid fuel combination of the present invention is fuel.

Therefore the present invention also provides the method for the oilness of the liquid base fuel that a kind of improvement is applicable to explosive motor, comprises the liquid base fuel mix that makes one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and major part be applicable to explosive motor; Improvement is applicable to the method for intake valve settling clean-up performance for the liquid base fuel of explosive motor, and described method comprises the liquid base fuel mix that makes one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and major part be applicable to explosive motor; The injector nozzle that improvement is applicable to the liquid base fuel of explosive motor keeps a method for clean-up performance, and described method comprises the liquid base fuel mix that makes one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and major part be applicable to explosive motor; Be applicable to the method for fuel economy performance of the liquid base fuel of explosive motor with a kind of improvement, described method comprises the liquid base fuel mix that makes one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and major part be applicable to explosive motor.

In addition, with respect to take the explosive motor that liquid base fuel is fuel, in liquid fuel within composition, apply one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group and also can provide benefit improving to take aspect the lubricant properties of the explosive motor that liquid fuel combination of the present invention is fuel.

Especially, improvement be take the lubricant properties of the explosive motor that liquid fuel combination of the present invention is fuel and can be reduced and be observed by the greasy filth in particular engine components and varnish amount, as the greasy filth on rocker arm bonnet, cam plate washer, timing chain guard, food tray, food tray plate washer and valve gap, and the varnish on piston skirt and cam plate washer.

Especially, with respect to take the explosive motor that gasoline basic fuel is fuel, in gasoline composition, applying one or more poly-(hydroxycarboxylic acid) derivatives with terminal acidic group can form aspect (by ASTM D6593-07 measurement) benefit is provided at the specific greasy filth and the varnish deposit thing that suppress to take the explosive motor that gasoline composition of the present invention is fuel.

Therefore, the present invention also provides the method for the lubricant properties that improves explosive motor, and described method comprises the fuel as the explosive motor containing engine lubricant with liquid fuel combination of the present invention.

The present invention also provides the method for operation explosive motor, and described method comprises in the combustion chamber of engine introduces liquid fuel combination of the present invention.

Above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group also can be aptly for lubricating composition, particularly in automobile engine lubricating oil composition.The wO2007/128740 being herein incorporated by reference discloses proper lubrication base oil and the additive that can sneak into wherein poly-(hydroxycarboxylic acid) derivative with terminal acidic group mentioned above.

Therefore, the present invention also provides a kind of lubricating composition, and described lubricating composition comprises:

-base oil; With

-above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group.

Conventionally, the gross weight of lubricating composition of take is benchmark, and the amount with poly-(hydroxycarboxylic acid) derivative of terminal acidic group in lubricating composition of the present invention is 0.1-10.0wt%, more preferably 0.1-5.0wt%.According to particularly preferred embodiment, the gross weight of lubricating composition of take is benchmark, poly-(hydroxycarboxylic acid) derivative with terminal acidic group that described composition comprises and is less than 5.0wt%, is preferably less than 2.0wt%.

Conventionally, described lubricating composition has relatively low phosphorus content, as lower than 0.12wt% (press ASTM D 5185 measure).Preferably, the phosphorus content of described composition is lower than 0.08wt%.Preferably, the phosphorus content of described composition is higher than 0.06wt%.

In addition, preferably the sulphur content of described composition lower than 0.6wt% (press ASTM D 5185 measure).

Further preferably the cl content of described composition is lower than 200ppm (pressing ASTM D 808 measures).

According to particularly preferred embodiment, the ash oontent of described composition is lower than 2.0wt% (pressing ASTM D 874 measures).

According to particularly preferred embodiment of the present invention, described composition comprises zinc dialkyl dithiophosphate (ZDDP) compound.Conventionally, if existed, the amount of ZDDP compound is 0.01-1.5wt%, is preferably 0.4-1.0wt%.ZDDP compound can be made by preferably containing primary, secondary, the tertiary alcohol or their mixture that are less than 12 carbon atoms.Preferably, ZDDP compound is made by the secondary alcohol that contains 3-8 carbon atom.

For the base oil of applying in lubricating composition, have no particular limits, can apply aptly mineral oil, synthetic oil and the natural derivative ester of various routines as vegetables oil.

Applied base oil can comprise the mixture of one or more mineral oil and/or one or more synthetic oils aptly; Therefore, term " base oil " can refer to the mixture containing multiple base oil.Mineral oil comprises the mineral lubricating oils of the paraffinic hydrocarbons/cycloalkane of liquid petroleum and solvent treatment or acid-treated paraffinic hydrocarbons, naphthenic hydrocarbon or mixing, and they can be further refining by hydrofinishing process and/or dewaxing.

The suitable base oil of applying in lubricating oil composition is I-III class mineral base oil, IV class poly-alpha olefins (PAO), the Fisher-Tropsch derived base oil of II-III class and their mixture.

" I class ", " II class ", " III class " and " IV class " base oil Zhi An API (API) are for the lubricant base of classification I-IV definition.These API are sorted in API Publication 1509, the 16 editions, annex E, definition in 2007 4 months.

Fisher-Tropsch derived base oil is well known in the art.Term " Fisher-Tropsch derived " refers to that base oil is or derived from the sintetics of Fischer-Tropsch process.Fisher-Tropsch derived base oil also can be called as GTL (gas is to liquid) base oil.The suitable Fisher-Tropsch derived base oil that can be used as aptly base oil in lubricating composition is those for example disclosed materials in EP 0776959, EP 0668342, WO 97/21788, WO 00/15736, WO 00/14188, WO 00/14187, WO 00/14183, WO 00/14179, WO 00/08115, WO 99/41332, EP 1029029, WO 01/18156 and WO 01/57166.

Synthetic oil comprises that hydrocarbon ils (comprises poly-alpha olefins base oil as olefin oligomer; PAO), the wax isomer of diester, polyol ester, polyalkylene glycol (PAG), alkylnaphthalene and dewaxing.Can apply aptly the synthetic hydrocarbon base oil of being sold with trade(brand)name " Shell XHVI " (trade mark) by Shell Group.

Poly-alpha olefins base oil (PAO) and their preparation are known in the art.The preferred poly-alpha olefins base oil that can apply in lubricating composition can be derived from straight chain C ₂-C ₃₂, preferred C ₆-C ₁₆alpha-olefin.For described poly-alpha olefins, particularly preferred raw material is 1-octene, 1-decene, 1-dodecylene and tetradecene.

Gross weight based on lubricating composition, the total amount of the base oil comprising in lubricating composition is preferably 60-99wt%, 65-98wt% more preferably, and most preferably be 70-95wt%.

Preferably, the kinematic viscosity of finished product lubricating composition at 100 ℃ is 2-80mm ²/ s, more preferably 3-70mm ²/ s, most preferably is 4-50mm ²/ s.

Lubricating composition can also comprise more additive, as compatible agent is fixed or sealed in anti-wear additive, antioxidant, dispersion agent, purification agent, friction modifier, viscosity index improver, pour point reducer, corrosion inhibitor, defoamer and sealing.

Because those skilled in the art know above-mentioned and other additive, therefore here no longer further discuss in detail.The specific examples of these additives is for example at Kirk-Othmer Encyclopedia of Chemical Technology, and the third edition, states in the 14th volume 477-526 page.

Correspondingly, if existed, purification agent is preferably selected from phenates and Sulfonates purification agent.

Described lubricating composition can be aptly for example, by mixing above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group and optional any other additive (as mentioned before) conventionally existing in lubricating composition and mineral and/or synthetic base oil preparation.

In lubricating composition, apply above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group and can aspect the improvement oilness of lubricating composition, provide advantage.

In addition, in lubricating composition, apply above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group and can suppress to provide advantage aspect specific greasy filth and varnish deposit thing formation (measuring by ASTM D 6593-07).

In addition, in lubricating composition, apply above-mentioned poly-(hydroxycarboxylic acid) derivative with terminal acidic group and can provide advantage improving aspect the fuel economy of the oil engine that be lubricated by described lubricating composition.

By following embodiment, further understand the present invention.If not indicated otherwise, in an embodiment disclosed all amounts and concentration all to take the weight of fuel composition of complete preparation be benchmark.

Embodiment

In following embodiment, apply commercially available hyper-dispersant CH-2C, it is obtained by Shanghai Sanzheng Polymer Material Co Ltd (China).

The molecular-weight average of CH-2C hyper-dispersant is 1368, and the sulphur content recording is 0.61ppmw, and the nitrogen content recording is 0.05wt%, and the type of general chemical structure for providing in lower Fig. 1:

The chemical structure of Fig. 1: CH-2C

Embodiment 1-21 and comparative example A-D

CH-2C hyper-dispersant mentioned above is blended in the basic fuel being selected from as described in following table 1 and 2 with difference amount: gasoline, diesel oil, GTL diesel oil and Swedish I class diesel base fuel.

Table 1 diesel base fuel

Parameter	Diesel oil A	Diesel oil B ^a	Diesel oil C ^b
				Cetane value (ASTMD613)	52.80	＞76	53.10
Density at 15 ℃ (IP365)	0.84g/cm ³	0.78g/cm ³	0.82g/cm ³
				Flash-point (IP34)	62.0℃	104.0℃	72.5℃
Initial boiling point (IP123)	168.6℃	211.0℃	190.3℃
				10% rectifying (IP123)	201.3℃	251.3℃	203.4℃
20% rectifying (IP123)	223.9℃	262.4℃	211.1℃
				30% rectifying (IP123)	246.3℃	273.3℃	225.9℃
40% rectifying (IP123)	266.7℃	285.6℃	225.9℃
				50% rectifying (IP123)	281.8℃	297.3℃	234.2℃
60% rectifying (IP123)	293.9℃	307.6℃	242.2℃
				70% rectifying (IP123)	306.0℃	316.9℃	250.6℃
80% rectifying (IP123)	319.7℃	326.9℃	259.4℃
				90% rectifying (IP123)	337.2℃	339.1℃	270.5℃
95% rectifying (IP123)	350.8℃	348.6℃	279.5℃
				Full boiling point (IP123)	362.3℃	355.3℃	291.6℃
Viscosity at 40 ℃ (IP71)	2.74mm ²/s	3.54mm ²/s	1.94mm ²/s
				Sulphur content	8.4mg/kg ^c	＜3mg/kg ^c	＜3mg/kg ^d
Total aromatic hydrocarbons (IP391/01/IP548/07)	40.5m/m％	0.4m/m％	13.3m/m％

The derivative diesel oil fuel of a-fischer-tropsch (GTL)

B-Swedish I class diesel oil fuel

c-ISO 20884

d-ISO 20846

Table 2 gasoline basic fuel

Parameter	" gasoline "
		RON value (ASTM D2699)	96.00
MON value (ASTM D2700)	85.10
		Density at 15 ℃ (IP365)	0.73g/cm ³
Initial boiling point (IP123)	26.5℃
		10% rectifying (IP123)	37.9℃
20% rectifying (IP123)	48.9℃
		30% rectifying (IP123)	61.0℃
40% rectifying (IP123)	74.4℃
		50% rectifying (IP123)	88.2℃
60% rectifying (IP123)	101.4℃
		70% rectifying (IP123)	113.3℃
80% rectifying (IP123)	127.9℃
		90% rectifying (IP123)	149.2℃
95% rectifying (IP123)	164.7℃
		Full boiling point (IP123)	191.2℃
RVP*(IP394)	87.8kPa
		Alkene (comprising diolefine)	16.40vol％
Aromatic hydrocarbons	28.88vol％

For evaluating the oilness of aforesaid liquid fuel composition, apply following test procedure.

Be applied in the HFRR test of describing in ISO 12156-1 and determine the oilness of diesel fuel composition.

The oilness of gasoline composition is determined in HFRR test after application is adjusted.HFRR test after adjustment is based on ISO 12156-1, application PCS instrument HFRR also supplements PCS instrument gasoline conversion bag, with applicating fluid volume 15.0ml (+/-0.2ml), fluid temperature (F.T.) is 25.0 ℃ (1 ℃ of +/-), and wherein uses PTFE lid coverage test sample so that evaporation minimizes.

Oilness test result provides in following table 3.

The HFRR result of table 3 basic fuel and fuel composition of the present invention

Embodiment	Basic fuel	Hyper-dispersant (concentration)	Average HFRR polishing scratch (μ m)
				A*	Diesel oil A	-	366.5
1	Diesel oil A	CH-2C(50ppmw)	328
				2	Diesel oil A	CH-2C(100ppmw)	330.5
3	Diesel oil A	CH-2C(500ppmw)	355
				4	Diesel oil A	CH-2C(1000ppmw)	361.5
5	Diesel oil A	CH-2C(1wt％)	229.5
				6	Diesel oil A	CH-2C(10wt％)	221
B*	Diesel oil B	-	624
				7	Diesel oil B	CH-2C(500ppmw)	439
8	Diesel oil B	CH-2C(1000ppmw)	422
				9	Diesel oil B	CH-2C(1wt％)	237.5
10	Diesel oil B	CH-2C(10wt％)	209
				C*	Diesel oil C	-	624.5
11	Diesel oil C	CH-2C(100ppmw)	621.5
				12	Diesel oil C	CH-2C(500ppmw)	392.5
13	Diesel oil C	CH-2C(1000ppmw)	400
				14	Diesel oil C	CH-2C(1wt％)	219.5
15	Diesel oil C	CH-2C(10wt％)	219.5
				D*	Gasoline	-	907
16	Gasoline	CH-2C(50ppmw)	536
				17	Gasoline	CH-2C(100ppmw)	366.5
18	Gasoline	CH-2C(500ppmw)	335
				19	Gasoline	CH-2C(1000ppmw)	323.5
20	Gasoline	CH-2C(1wt％)	258.5
				21	Gasoline	CH-2C(10wt％)	252

*-non-the present invention

Result from table 3 can be found out, than basic fuel, containing the fuel composition (gasoline and diesel fuel composition) of CH-2C hyper-dispersant, in HFRR test, observe polishing scratch and reduce, this represents the improvement containing the oilness of the fuel of hyper-dispersant than basic fuel.

Claims

1. a liquid fuel combination, described liquid fuel combination comprises:

-be applicable to the basic fuel of explosive motor; With

-one or more have poly-(hydroxycarboxylic acid) derivative with terminal acidic group of general formula (III):

[Y—CO[O—A—CO] _n-Z _p] _m-X (III)

2. the liquid fuel combination of claim 1, the gross weight based on liquid fuel combination wherein, one or more poly-(hydroxycarboxylic acid) derivative amounts in described liquid fuel combination with terminal acidic group are 1ppmw at least.

3. the liquid fuel combination of claim 2, the gross weight based on liquid fuel combination wherein, one or more poly-(hydroxycarboxylic acid) derivative amounts in described liquid fuel combination with terminal acidic group are 10ppmw-20wt%,

4. the liquid fuel combination of claim 1-3 any one, wherein X is general formula-Z ¹-X ¹group, Z wherein ¹for difunctionality connects compound, and X ¹for being selected from following terminal acidic group: carboxylic acid, carboxymethyl, sulfate radical, sulfonate radical, phosphate radical and phosphonate radical.

5. the liquid fuel combination of claim 4, wherein Z ¹for being selected from the difunctionality of polyamines, polyvalent alcohol, azanol, connect compound, or Z group as defined in claim 1.

6. the liquid fuel combination of claim 1-3 any one, wherein said terminal acidic group is free acid form.

7. the liquid fuel combination of claim 5, wherein said terminal acidic group is free acid form.

8. the liquid fuel combination of claim 1-3 any one, the form of the salt that wherein said terminal acidic group is described acid.

9. the liquid fuel combination of claim 5, the form of the salt that wherein said terminal acidic group is described acid.

10. the liquid fuel combination of claim 1-3 any one, wherein said basic fuel is gasoline.

The liquid fuel combination of 11. claims 5, wherein said basic fuel is gasoline.

The liquid fuel combination of 12. claim 1-3 any one, wherein said basic fuel is diesel oil fuel.

The liquid fuel combination of 13. claims 5, wherein said basic fuel is diesel oil fuel.

14. 1 kinds of methods that operate explosive motor, described method comprises to the liquid fuel combination of introducing claim 1-13 any one in the combustion chamber of engine.

15. 1 kinds of lubricating compositions, described lubricating oil composition comprises:

-base oil; With

[Y—CO[O-A—CO] _n-Z _p] _m-X (III)