CN101275098A - Lubricating oil composition for improved oxidation viscosity increase oil consumption and piston deposit control - Google Patents

Lubricating oil composition for improved oxidation viscosity increase oil consumption and piston deposit control Download PDF

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Publication number
CN101275098A
CN101275098A CNA2008100876284A CN200810087628A CN101275098A CN 101275098 A CN101275098 A CN 101275098A CN A2008100876284 A CNA2008100876284 A CN A2008100876284A CN 200810087628 A CN200810087628 A CN 200810087628A CN 101275098 A CN101275098 A CN 101275098A
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base oil
oil
lubricant compositions
composition
class base
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CN101275098B (en
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W·Y·林
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Afton Chemical Corp
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Afton Chemical Corp
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • C10N2030/041—Soot induced viscosity control
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/74—Noack Volatility
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines

Abstract

An engine oil lubricant composition having improved control of oxidation viscosity, and piston deposits is provided. The composition further exhibits performance on the ASTM Sequence IIIG Test of about 90% or less kinematic viscosity increase at 40 DEG C, and about 5.5 or more merits average weighted piston deposits. The composition meets or exceeds the standards of both the ILSAC GF-4 and the General Motors GM4718M specifications.

Description

Be used to improve oxidation, stickingly increase, the lubricating oil composition of oil consumption and piston deposit control
Technical field
The disclosure relates to the engine oil lubricating composition, the engine oil lubricating composition that specifically, relate to oxidation, sticking increase, piston deposit and oil consumption control has the control of improving.
Background technology
Be applicable to that the lubricating oil of modern engine must satisfy the performance reference of industrial specification, satisfy or surpass publishing standard, SM standard as international lubricant levelization and evaluation committee's (theInternational Lubricant Standardization and Approval Committee, " ILSAC ") GF-4 standard and american petroleum institute (the American PetroleumInstitute).Must be by being ASTM sequence III G test with one of performance test of satisfying ILSAC GF-4, this test evaluation lubricating oil composition is regulated the ability of oily thickening and piston cleanliness.
ASTM sequence III G test is around General Motors Corporation's 3800 serial II 3.8L V-6 engines, and with 125 horsepowers, operation 100h is designed continuously for 3600RPM and 150 ℃ of oil temperature.III G allows the performance of evaluation test oil under special severe condition, and purpose is to assess the true service ability of oil better.
For satisfying the minimum standard of GF-4 or SM, the test oil composition must have 150% or lower sticking the increasing of ASTM sequence III G, and 3.5 or higher weighting piston deposit (" WPD ").Sequence III G experimental performance requires than previous also strictness about 50% of ASTM sequence III F test.But some initial equipment manufacturing (" OEM ") requires even higher performance level their specific engines series.For example, the GM4718M of General Motors Corporation code requirement ASTM sequence III G is sticking to increase to 90% or lower, and WPD is 5.5 or higher.
Therefore purpose of the present disclosure is to provide and can satisfies or surpass GM4718M standard institute to the modular engine oil compositions, and it is satisfied or above GF-4 and SM modular engine oil compositions to be provided at oxidation, viscosity, piston deposit and oil consumption control aspect simultaneously.
Summary of the invention
With regard to above-mentioned and other purpose, embodiment of the present disclosure be provided at the kinetics that can reach in the ASTM sequence III G test 40 ℃ under sticking increase to about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade engine oil lubricants composition.Said composition can comprise the synergism base oil mixture of mainly being made up of III class base oil, IV class base oil and V class base oil of main amount.
In another embodiment, be provided at the kinetics tackify that can reach in the ASTM sequence III G test 40 ℃ under and be about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade engine oil lubricants method for compositions, can comprise III class base oil, IV class base oil and V class base oil are combined into synergism base oil mixture.
In another embodiment, the method for lubricating engine parts can comprise make in engine parts and the ASTM sequence III G test kinetics tackify under 40 ℃ be about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade oil lubricant composition contact.This lubricant compositions can comprise the synergism base oil mixture of III class base oil, IV class base oil and the V class base oil of main amount.
Lubricant compositions of the present disclosure can use the synergism mixture of base oil feedstock to provide than the significant improvement in performance of conventional lubricant composition.Some advantages of embodiment of the present disclosure are, with the II class base oil that comprises no III class base oil, IV class base oil and V class base oil mixture, or comprise no IV class base oil and compare with the conventional lubrication oil compositions of the III class base oil of V class base oil mixture, its kinetics glues to increase to be had significantly and improvement unexpectedly, and oil consumption has remarkable and unexpected improvement and average weighted piston deposit that remarkable and unexpected the improvement arranged.
Other purpose of the present disclosure and advantage will part provide in the following description book, and/or can be understanded by implementing the disclosure.Purpose of the present disclosure and advantage will realize and obtain by the key element that particularly points out in claims and combination thereof.
Should be appreciated that the general introduction of front and following detailed description all are to give an example with indicative, but not to restriction of the present disclosure required for protection.
Embodiment
As used herein, " hydrocarbon " is meant any one in a large amount of compounds of the carbon, hydrogen and/or the oxygen that contain various combinations.Term " alkyl " is meant the group that carbon atom directly is connected the rest part of molecule and mainly has the hydrocarbon characteristic.The example of alkyl comprises: (i) hydrocarbon substituent, promptly aliphatic (for example alkyl or alkenyl), alicyclic (for example cycloalkyl, cycloalkenyl group) substituting group, and aromatics-, the aromatic substituent of aliphatic series-and alicyclic-replace, and ring substituents, wherein ring is (for example 2 substituting groups forms alicyclic group together) of finishing by another part of molecule; (ii) replace hydrocarbon substituent, promptly contain the substituting group of non-alkyl, in this context, it does not change main hydrocarbon substituent (for example halogen (especially chloro and fluorine-based), hydroxyl, alkoxyl group, sulfydryl, alkyl thiol, nitro, nitroso-group and sulfoxide group); (iii) assorted substituting group, promptly when having main hydrocarbon characteristic, in this context, also in the ring of originally forming by carbon atom or chain contain the substituting group of non-carbon atom.Heteroatoms comprises sulphur, oxygen, nitrogen, and comprises the substituting group such as pyridyl, furyl, thienyl and imidazolyl.For per 10 carbon atoms in the alkyl, generally existence is no more than 2, preferably be no more than 1 non-hydrocarbon substituent; General hydrocarbon substituent nothing but in alkyl.
The disclosure relates to the engine oil lubricants composition.The engine oil lubricating composition can comprise the base oil mixture of comprising of main amount of at least a III class base oil, at least a IV class base oil and at least a V class base oil.Verified, this synergism base oil mixture provides the significant improvement in performance of being made up of II class base oil or III class base oil than substantially of conventional lubricant composition in ASTM sequence IIIG test.
Lubricant compositions can comprise mixture and a spot of lubricant additive compositions of one or more base oil feedstock of main amount.Base oil can comprise one or more base oil feedstock, and compositions of additives dissolves in wherein.Each component is selected by the standard of engine shop, to satisfy especially some requirement of test parameter such as viscosity and piston deposit formation amount.For guaranteeing to satisfy the standard of engine shop, carry out test such as ASTM sequence IIIG to possible oil compositions.
As used herein, term " oil compositions ", " lubricating composition ", " lubricating oil composition ", " lubricating oil ", " engine oil ", " lubricant compositions ", " Pei Zhi lubricant compositions fully " and " lubricant " can be regarded the synonym of complete interchangeable as, and the base oil that all refers to comprise main amount adds the lubricated product of finished product of minor amounts of additives composition.
As used herein, term " additive-package ", " multifunctional additive for lubricating oils " and " compositions of additives " can be regarded the synonym that complete interchangeable uses as, all refer to get rid of in the lubricating composition that part of beyond the base oil feedstock mixture of main amount. Base oil
The synergism mixture that can comprise at least a III class base oil of main amount, at least a IV class base oil and at least a V class base oil according to engine oil lubricants composition of the present disclosure.Main amount is defined as the 50wt% greater than total lubricant compositions, for example more than or equal to the 80wt% of total lubricant compositions.The rest part of lubricant compositions can be provided by the minor amounts of additives composition.Be defined as 50wt% on a small quantity, and for example be less than or equal to the 20wt% of total lubricant compositions less than total lubricant compositions.
The base oil mixture can comprise the mixture of one or more each III class base oils, IV class base oil and V class base oil.In the base oil mixture, must comprise at least a base oil, so that lubricating composition has benefited from the synergistic effect between the base oil from each III class, IV class and V class.The proper ratio of all kinds of base oils can comprise about at the most 50wt%III class base oil, about 20wt%～about 45wt%IV class base oil and about 5wt%～about 25wt%V class base oil, is that benchmark calculates with the gross weight of base oil mixture.And for example, the proper ratio of all kinds of base oil feedstock can comprise about 30wt%～about 50wt%III class base oil, about 20wt%～about 35wt%IV class base oil and about 5wt%～about 25wt%V class base oil, is that benchmark calculates with the gross weight of base oil mixture.
The III class base oil that is applicable to preparation engine oil lubricants composition can be selected from any natural oil or its mixture.Natural oil comprises animal oil and vegetables oil (as Viscotrol C, lard) and mineral lubricating oils, crosses or alkane type, cycloalkanes type or the alkane-cycloalkanes mixed type mineral lubricating oils of acid treatment as petroleum liquid lubricating oil with through solvent treatment.Oil derived from coal or shale also is suitable for.Base oil is generally about 2～about 15cSt 100 ℃ viscosity, and for example, and about 2～about 10cSt.In addition, embodiment can contain more than the identical or different III class base oil of a kind of viscosity.
IV class or V class base oil can comprise the alkyl ester of dicarboxylic acid, polyoxyethylene glycol and alcohol, comprise the poly-alpha olefins of polybutene, alkylbenzene, the organic ester of phosphoric acid and polysiloxane oil.Synthetic oil comprises hydrocarbon ils, as the alkene (for example polybutene, polypropylene, propylene-isobutylene copolymers etc.) of polymerization and copolymerization; Poly-(1-hexene), poly-(1-octene), poly-(1-decene) etc., and their mixture; Alkylbenzene (for example dodecylbenzene, tetradecyl benzene, dinonyl benzene, two-(2-ethylhexyl) benzene etc.); Polyphenyl (for example biphenyl, terphenyl, alkylation polyphenyl etc.); Alkylation diphenyl ether and alkylation diphenyl sulfide and their derivative, analogue and homologue or the like.
The terminal hydroxy group alkylene oxide polymer by modifications such as esterification, etherificates and multipolymer and derivative thereof constitutes another kind of known available synthetic oil.The example of this class oil (for example has the alkyl of the oil made by the polymerization of ethylene oxide or propylene oxide, these polyoxyalkylene polymers and aryl ethers, the Anaesthetie Ether of the polypropylene glycol of diphenyl ether, the molecular weight about 1000～1500 of the polyoxyethylene glycol of the methyl of molecular-weight average about 1000-poly-Isopropanediol ether, molecular weight about 500～1000 etc.) or it is single-and many-carboxylicesters, for example acetic ester of Tetraglycol 99, C 3-8Mixed aliphatic ester or C 13The oxygen acid diester.
Another kind of available synthetic oil comprises the ester of dicarboxylic acid (for example phthalic acid, succsinic acid, alkyl succinic acid, alkenyl succinic acid, toxilic acid, nonane diacid, suberic acid, sebacic acid, fumaric acid, hexanodioic acid, linoleic acid dimer, propanedioic acid, alkyl propanedioic acid, thiazolinyl propanedioic acid etc.) and various alcohol (for example butanols, hexanol, dodecanol, 2-Ethylhexyl Alcohol, ethylene glycol, monoalkyl ethers of diethylene glycol, propylene glycol etc.).The complex ester that the specific examples of this class ester comprises the 2-ethylhexyl diester of Polycizer W 260, sebacic acid two (2-ethylhexyl) ester, the just own ester of fumaric acid two, dioctyl sebacate, diisooctyl azelate, two different decayl esters of azelaic acid, dioctyl phthalate (DOP), didecyl phthalate, sebacic acid two (eicosyl) ester, linoleic acid dimer, formed by 1mol sebacic acid and 2mol Tetraglycol 99 and the reaction of 2mol 2 ethyl hexanoic acid etc.
The ester that can be used as synthetic oil also comprises from C 5～C 12Those that monocarboxylic acid and polyvalent alcohol and polyol ethers such as neopentyl glycol, TriMethylolPropane(TMP), tetramethylolmethane, Dipentaerythritol, tripentaerythritol etc. are made.In addition, also applicable derived from the oil of solution-air method.
V class base oil can comprise non--PAO synthetics, includes but not limited to synthetic ester, diester, polyol ester, alkylated naphthalene, alkylated benzenes etc.The V class base oil that is suitable for is that the viscosity under 100 ℃ is that 4.4cSt and viscosity index are 140 trimethylolpropane tris C8/C10 ester.
Therefore, the base oil that can be used for making engine lubrication composition as described herein can be selected from any base oil of the III～V class of defined in american petroleum institute (API) the base oil interchangeableness guide (American PetroleumInstitute (API) Base Oil Interchangeability Guidelines).These base oil classifications are as follows: Table 1 1I～III class is a mineral oil basis raw material
As mentioned above, base oil can comprise poly-alpha olefins (PAO).Poly-alpha olefins is generally derived from having about 4～about 30, or about 4～about 20, or the monomer of about 6～about 16 carbon atoms.The example that is suitable for PAO comprises derived from those of octene, decene and their mixtures etc.PAO 100 ℃ viscosity can for about 2～about 15, or about 3～about 12, or about 4～about 8cSt.The example of PAO comprise viscosity 100 ℃ down for the poly-alpha olefins of 4cSt, be the poly-alpha olefins of 6cSt and their mixture 100 ℃ times.Can use the mixture of mineral oil and above-mentioned poly-alpha olefins.
Base oil can comprise the oil derived from the synthetic hydrocarbon of Fischer-Tropsch.The synthetic hydrocarbon of Fischer-Tropsch uses the Fischer-Tropsch catalyzer from containing H 2Make with the synthesis gas of CO.For being suitable for as base oil the general further processing of this class hydrocarbon.For example, hydrocarbon can carry out hydrogenation isomerization with U.S. patent 6,103,099 or 6,180,575 disclosed methods; With U.S. patent 4,943,672 or 6,096,940 disclosed methods are carried out hydrocracking and hydrogenation isomerization; Dewax with U.S. patent 5,882,505 disclosed methods; Or with U.S. patent 6,013,171; 6,080,301; Or 6,165,949 disclosed method hydrogenation isomerization and dewaxing.
Not refining, refining and heavy treated oil no matter be above disclosed natural or synthesis type (and wherein any 2 kinds or multiple mixture), can both be used for base oil.Unrefined oil is directly to obtain and without being further purified those of processing from natural or synthetic source.For example, the direct shale oil that obtains from the retorting operation, the directly petroleum oil that obtains from primary distillation or directly obtain and all belong to unrefined oil without further handling the ester oil that just uses from esterification process.Treated oil is similar to unrefined oil, but they are for improving one or multinomial performance further processing of process in a step or multistep purification step.A lot of these class purification techniques are well known by persons skilled in the art, as solvent extraction, second distillation, acid or alkali extracting, filter, exceed and ooze etc.Heavy treated oil is to be applied to by being similar to those methods that are used for obtaining treated oil that used treated oil obtains.The heavy treated oil of this class also is called recovered oil or reprocessed oils, and often will do other processing by the technology that is intended to remove useless additive, pollutent and oil breaking product. Compositions of additives
Lubricant compositions can comprise hydrocarbon soluble additives component, is selected from but is not limited to dispersion agent, friction modifiers, anti-wear agent, antioxidant, suds suppressor, sanitising agent, viscosity index improver, pour point reducer, thinner etc.This class binder component generally uses so that the lubricant compositions of preparation fully to be provided with usual amounts.Be purpose of the present disclosure, above-mentioned term relates to the main characteristic of binder component.Should be understood that many components can play multiple effect in lubricant compositions.Therefore the classification of binder component only is for easy, and is not intended to limit the scope of described embodiment. Dispersion agent
The available dispersion agent includes but not limited to usually to be connected amine, alcohol, acid amides or ester polarity part on the polymer backbone by abutment.Dispersion agent can be selected from Mannich dispersant, and as U.S. patent 3,697,574 and 3,736,357 is described; Ashless succinimide dispersants, as U.S. patent 4,234,435 and 4,636,322 is described; The amine dispersion agent, as U.S. patent 3,219,666,3,565,804 and 5,633,326 is described; The Koch dispersion agent, as U.S. patent 5,936,041,5,643,859 and 5,627,259 is described; And the polyalkylene succinimide dispersants, as U.S. patent 5,851,965,5,853,434 and 5,792,729 is described.
As used herein; term " succinimide " is intended to comprise the complete reaction product that the amber acylation agent that replaces from alkyl and the reaction between the polyamines obtain, but and is intended to comprise in the product except the imide bond that is generated by the reaction of elementary amino and anhydride moiety the also compound of amide containing, amidine and/or sat linkage.
In succinimide, the succinimide that contains the amber acylation agent that the aliphatic hydrocarbyl of average at least 40 carbon atoms replaces derived from wherein hydrocarbyl substituent is the dispersion agent of particularly suitable.What should be used as acylating agent especially is the succsinic acid that replaces of (a) at least a polyisobutenyl or (b) succinyl oxide that replaces of at least a polyisobutenyl or (c) combination of the succinyl oxide that replaces of the succsinic acid that replaces of at least a polyisobutenyl and at least a polyisobutenyl; wherein the polyisobutenyl substituting group at (a) and (b) or (c) is 400～5,000 polyisobutene or highly reactive polyisobutenes derived from number-average molecular weight.
Be purpose of the present disclosure, term " high reactivity " is meant that vinylidene double key number residual in the compound is greater than about 45%.For example, residual vinylidene double key number can be about 50%～about 85% in the compound.The percentage ratio of the two keys of residual vinylidene can be measured with the method for knowing in the compound, as infrared spectroscopy or C 13Nuclear magnetic resonance method or their combination.The method of producing this compounds is described in the U.S. patent 4,152,499.
The another kind of dispersion agent that is suitable for is the polyalkylene succinimide dispersants derived from above-mentioned polyisobutene (PIB) compound, and wherein the reactive PIB content that has of dispersion agent is at least about 45%.Dispersion agent can be number-average molecular weight be about 800～about 3000 and reactive PIB content be the mixture of about dispersion agent of 50%～about 60%.The total amount of dispersion agent can be in about 1wt%～about 10wt% scope of lubricant compositions gross weight in the lubricant compositions, more preferably from about 1wt%～about 4wt%.
In embodiment of the present disclosure, dispersion agent can be the boronation dispersion agent.In some embodiment, dispersion agent can be without phosphorus basically.In other embodiments, dispersion agent can be phosphorous.Therefore, the mixture of dispersion agent can comprise boronation dispersion agent and non-boronation dispersion agent.In boronation and the non-boronation dispersion agent one or both can be made by above-mentioned hyperergy polyalkylene compound.The boronation dispersion agent can by before the reaction that forms dispersion agent, during or afterwards can boron substance be introduced the boron compound of dispersion agent or the mixture reaction of boron compound form with containing.Any boron compound that this reaction can take place, organic or inorganic, all available.Therefore can utilize this class inorganic compounds of boron as boric acid and boron oxide, comprise their hydrate.Typical organoboron compound comprises the ester of boric acid, as ortho-boric acid acid esters, metaboric acid ester, acid boric acid ester, pyroboric acid ester or the like. Friction modifiers
In lubricating oil composition as herein described, can mix into one or more oil soluble friction modifiers.Friction modifiers optional from nitrogenous, do not have nitrogen, contain amine and/or do not have the amine friction modifiers.The consumption of friction modifiers can be about 0.02wt%～2.0wt% of lubricating oil composition.In another embodiment, can use 0.05wt%～1.0wt%, or 0.1wt%～0.5wt% friction modifiers.
The example of the nitrogenous friction modifiers of available includes but not limited to tetrahydroglyoxaline, acid amides, amine, succinimide, alkoxylated amines, alkoxylated ether amine, amine oxide, amino amine, nitrile, trimethyl-glycine, quaternary amine, imines, amine salt, aminoguanidine, alkanolamide or the like.
This class friction modifiers can contain alkyl, and alkyl can be selected from straight chain, side chain or aryl or their mixture, and can be saturated or undersaturated.Alkyl mainly is made up of carbon and hydrogen, but can contain one or more heteroatomss, as sulphur or oxygen.Alkyl can contain 12～25 carbon atoms, and can be saturated or undersaturated.More suitable is with those of linear alkyl.
Other example of friction modifiers comprises alkoxylated amines and alkoxylated ether amine, contains the alkoxylated amines of the 2mol alkylene oxide of having an appointment for the most suitable with every mol nitrogen.This compounds can contain linear alkyl, no matter saturated, unsaturated or their mixture.They include at hydrocarbyl chain and are no more than about 12～about 25 carbon atoms and can contain one or more heteroatomss.Ethoxylated amine and ethoxylated ether amine are the nitrogenous friction modifiers of particularly suitable.But amine and acid amides former state are used or with boron compound, as boron oxide, halogenation boron, metaborate, boric acid or single-, two-or the adducts of three-boron alkyl acid esters or the form of reaction product use.
Oil, fat or polyolefinic sulfide also can be used as ashless organic friction modifiers.Particularly, having of can mentioning for example vulcanize Sperm whale oil, sulfuration firpene oil, sulfuration soya-bean oil, sulfurized polyolefin, dialkyl disulphides, dialkyl polysulfide, benzyl disulfide thing, di-t-butyl disulphide, polyolefine polysulphide, such as, thiadiazoles type compound of dialkyl group polythioalkane base thiadiazoles and so on and sulfuration phenol.In these compounds, dialkyl polysulfide, benzyl disulfide thing and thiadiazoles type compound are ideal.It is desirable to dialkyl group polythioalkane base thiadiazoles especially.
The friction modifiers that can be used for organic, ashless (the no metal) in the lubricating composition disclosed herein, no nitrogen generally is known and comprises the ester that is formed by carboxylic acid and acid anhydrides and alkanol or glycol reaction, is the carboxylic acid of particularly suitable with lipid acid.Other friction modifiers that is suitable for generally comprises the terminal polar group (for example carboxyl or hydroxyl) that is covalently bound on the oleophylic hydrocarbon chain.The ester of carboxylic acid and acid anhydrides and alkanol is described in the U.S. patent 4,702,850.
Another kind is applicable to that the friction modifiers in the disclosure embodiment is the ester such as monooleate glyceryl ester (GMO), and its amount ranges is about 0.1wt%～about 0.4wt% of lubricating composition gross weight.The friction modifiers that is suitable for can comprise the friction modifiers that does not have transition metal substantially, and transition metal includes but not limited to titanium and molybdenum. Anti-wear agent
Can add dialkyl phosphorodithioic acid metal-salt anti-wear agent in the lubricating composition of the present invention and comprise wherein that metal can be the dialkyl phosphorodithioic acid metal-salt of alkali or alkaline-earth metal or aluminium, lead, tin, manganese, nickel, copper or zinc.
The anti-wear agent that is suitable for comprises dialkyl zinc dithiophosphate (ZDDP), as the oil soluble salt of the dialkyl phosphorodithioic acid can following formula represented:
Figure A20081008762800111
R wherein 7And R 8Can be identical or different contain 1～18, be generally the alkyl of 2～12 carbon atoms, and comprise the group such as alkyl, thiazolinyl, aryl, aralkyl, alkaryl and cycloaliphatic radical.Especially preferred R 7And R 8Group is the alkyl of 2～8 carbon atoms.Therefore, this group can be for example ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, amyl group, n-hexyl, isohexyl, n-octyl, decyl, dodecyl, octadecyl, 2-ethylhexyl, phenyl, butyl phenyl, cyclohexyl, methylcyclopentyl, propenyl, butenyl.For obtaining oil soluble, the total number of carbon atoms in phosphorodithioic acid (is R 7And R 8) generally will be about 5 or bigger.Therefore, the dialkyl zinc dithiophosphate can comprise primary, secondary or its mixed type zinc dialkyl dithiophosphate.
For restriction is no more than 0.1wt% (1000ppm) phosphorus by the phosphorus amount that ZDDP introduces lubricating composition, and for example be no more than about 0.12wt% (1200ppm) phosphorus, the ZDDP amount of adding lubricating oil composition is no more than about 0.9wt%～about 1.3wt% of lubricating composition gross weight ideally.The above-mentioned consumption of ZDDP can produce as this class lubricating oil of " low-phosphorous " lubricating oil.As used herein, term " low-phosphorous " can describe wherein that lubricating oil composition comprises the phosphorus at least about 250ppm, or the embodiment of and for example about 250ppm～about 1200ppm phosphorus. Antioxidant
In order to reduce base oil feedstock degradation trend in use, can add oxidation retarder or antioxidant, described deterioration can be reflected on the oxidation products such as slag and lacquer deposit and viscosity increase on the metallic surface.This class oxidation retarder comprises hindered phenol, band C 5～C 12The alkaline earth salt of the alkylphenol thioesters of alkyl group side chain, nonyl phenol sulfurated lime, ashless oil soluble phenates and sulfuration phenates, phosphorus sulfuration or sulfuration hydrocarbon, olefine sulfide, diarylamine, phenol fat antioxidant, phosphide, thiocarbamate metal-salt and oil-soluble copper compounds, as U.S. patent 4,867,890 is described.The add-on of antioxidant in lubricating oil composition can be about 1.0wt%～about 3.0wt% of lubricating oil composition gross weight. Suds suppressor
Foam control can provide by a lot of compounds, comprises polysiloxane type suds suppressor, for example silicone oil or polydimethylsiloxane.The add-on of suds suppressor in lubricating oil composition can be about 0.001wt%～about 0.700wt% of lubricating oil composition gross weight. Sanitising agent
Sanitising agent metallic or the one-tenth ash can play minimizing simultaneously or remove sedimental sanitising agent effect and acid neutralizing agent or rust-preventive agent effect, thereby reduces abrasion and corrode and prolong engine life.Sanitising agent generally comprises the polar head with hydrophobic long-tail, and polar head comprises the metal-salt of acidic organic compound.Salt can contain stoichiometric substantially metal, and wherein they just often are being described to or neutral salt, and its total basicnumber (" TBN ") is generally 0～80, as measuring with ASTM D-2896.By making excessive metallic compound comprise that with sour gas such as carbon dioxide reaction into a large amount of metal base are possible as oxide compound or oxyhydroxide.The gained over-based detergent comprises as the outer field mild detergent of metal base (as carbonate) micella.The TBN of this class over-based detergent can be 150 or bigger, is generally 250～450 or bigger.
Known sanitising agent comprises metal, and especially alkali or alkaline-earth metal are as oil soluble neutrality and overbased sulfonate, phenates, sulfuration phenates, salicylate and naphthenate and other oil soluble carboxylate salt of sodium, potassium, lithium, calcium and magnesium.The most frequently used metal is calcium and magnesium, and both can be present in the sanitising agent used in the lubricant simultaneously, and the mixture of calcium and/or magnesium and sodium.Special metal detergent easily is that TBN is that about neutrality of 20～about 450 and high alkaline calcium sulfonate and TBN are about neutrality of 50～about 450 and high alkalinity calcium phenylate and sulfurized calcium phenate.
In disclosed embodiment, the consumption of one or more calcium base sanitising agents can be in about 1.0wt%～about 5.0wt% scope of lubricating oil composition gross weight.The metal matrix sanitising agent can be that the total basicnumber of overbasic and over-based detergent can be about 150～about 450.The metal matrix sanitising agent can comprise overbased calcium sulfonate detergents or overbased magnesium sulphonates sanitising agent.Sanitising agent can also be that base number is lower than about 80 low alkali calcium sulphonate sanitising agent.
Sanitising agent can exist with the amount of contributing about 0.01wt%～1.0wt% metal content.In another embodiment, sanitising agent can exist with the amount of contributing about 0.01wt%～about 0.5wt% metal content.In also having an embodiment, sanitising agent can exist with the amount of contributing about 0.01wt%～about 0.2wt% metal content. Viscosity index improver/pour point reducer
Viscosity index (" VI ") improving agent and pour point reducer comprise various hydrocarbon soluble polymers and multipolymer, have covered very wide possible molecular weight ranges.VI improving agent and pour point reducer help to keep the mobility of lubricating composition in broad temperature range.Derivative that VI improving agent that is suitable for and pour point reducer can comprise the polystyrene-maleic anhydride multipolymer or overstepping one's bounds powder olefin copolymer are as ethylene-propylene copolymer. Other additive
In the lubricant compositions of preparing fully according to the disclosure, also can comprise other conventional additive.Some above-mentioned additive can provide multinomial effect; Therefore, for example, a kind of additive can play dispersion agent-oxidation retarder.
Various additives can be mixed into base oil mixture with any common method.Therefore, each component can be by it is dispersed or dissolved in the base oil mixture with required concentration amounts and is directly added the base oil mixture.This mixing can be in room temperature or is at high temperature carried out.
In another embodiment, all additives all can as described hereinly be mixed into enriched material as additive-package, subsequently this bag are infiltrated the base oil mixture, to make finished lubricants.When the base lubricant of enriched material and predetermined amount is made up, can be formulated into the concentration that makes content of additive be suitable in end formulation, providing expectation to enriched material.
Pei Zhi lubricant compositions can adopt about 2wt%～about 20wt% fully, and for example about 4wt%～about 18wt%, enriched material or the additive-package of and for example about 5wt%～about 17wt%, and rest part comprises the consonance base oil mixture of III class base oil, IV class base oil and V class base oil.The base oil composition of making according to the disclosure is suitable for mixing with containing at least about 250ppm phosphorus and/or the additive-package of not having the transition metal beyond the zinc substantially, transition metal includes but not limited to titanium and/or molybdenum, and such lubricating composition can satisfy or surpass to contain and comprise transition metal, includes but not limited to the performance class of lubricating composition of the additive-package of titanium and/or molybdenum.
In some embodiment, lubricant compositions can comprise the phosphorus at least about 0.025wt% (or about 250ppm), or and for example at least about the phosphorus of 0.02wt% (or about 200ppm).In some embodiment, lubricant compositions can comprise the zinc that is less than about 0.03wt% (or about 300ppm), or and for example is less than the zinc of about 0.02wt% (or about 200ppm).In some embodiment, lubricant compositions can not have transition metal substantially, such as but not limited to molybdenum or titanium.In other embodiments, lubricant compositions can comprise the transition metal that is less than about 50ppm, or and for example is less than the transition metal of 40ppm.
Following indefiniteness embodiment is used for illustrating embodiment of the present disclosure: Embodiment 1
The recipe ratio that table 2 has provided oily A, oily B and these 3 kinds of SAE 5W-30 test oils of oily C.Oil A is the embodiment of disclosure embodiment, and oily B is the traditional oils that comprises the base oil with III class base oil feedstock mixture, and oily C is the traditional oils that comprises the base oil with II class base oil feedstock.Oil A, B contain identical additive-package with C, but oily A needs less viscosity index improver (" VI ") than oily B and C.Oil A comprises and can make mixture have the V class base oil of desirable viscosity, so need not a lot of VI its performance and the oil phase that contains more additives but do not have a V class base oil feedstock worked as. Table 2
Test oil A B C
wt％ wt％ wt％
Succinimide dispersants 1 1.90 1.90 1.90
Succinimide dispersants 2 1.70 1.70 1.70
The calcium sulphonate sanitising agent, its amount provides specific calcium contents 0.17 0.17 0.17
Low alkali calcium sulphonate sanitising agent, its amount provides specific calcium contents 0.07 0.07 0.07
ZDDP, its amount provides specific phosphorus content 0.078 0.078 0.078
Antioxidant 1 0.50 0.50 0.50
Antioxidant 2 0.90 0.90 0.90
Antioxidant 3 0.50 0.50 0.50
The Si suds suppressor 0.006 0.006 0.006
The mineral treated oil 0.544 0.544 0.544
Contain the ester friction modifiers 0.30 0.30 0.30
Overstepping one's bounds powder viscosity index improver 7.80 9.00 9.20
Pour point reducer 0.10 0.10 0.10
Base oil
II class mineral oil is 4.8cSt 100 ℃ viscosity 79.20
III class mineral oil is 4cSt 100 ℃ viscosity 66.40
III class mineral oil is 8cSt 100 ℃ viscosity 37.60 13.00
IV class PAO is 4cSt 100 ℃ viscosity 28.00
The V kind polyester is 4.4cSt 100 ℃ viscosity 15.00
Amount to % 100.00 100.00 100.00
Be used for the testimonial ASTM sequence of engine oil ILSAC GF-4 III G experimental measurement such as following factor: the average abrasion of cam and tappet, sticking increase, oil consumption and high temperature piston deposit form.Test oil circulation 100h continuously in the GM3800 series II 3.8L V-6 engine of 125 horsepowers, 3600PRM and the operation of 150 ℃ of oil temperature.
Oxidation at ASTM sequence III G duration of test engine oil may cause viscosity increase, cam and tappet abrasion to increase and form more piston deposit.In ASTM sequence III G test, compare with the ASTM sequence III G test-results of controlling improved test oil composition available from not oxidised, the improved test oil composition of oxidation control also can show the sticking cam that increases, reduces of minimizing and the piston deposit of tappet abrasion and minimizing forms. Table 3 Sequence III G result A B C
Sticking increase (maximum 150%) of 100hr 17％ 112％ 111％
Weighting piston deposit (minimum 3.5) 6.7 4.0 3.8
The average abrasion of cam and tappet (maximum 60 μ m) 19 28 27
Oil consumption (L) 1.84 3.51 3.84
The ASTM sequence III G test-results of each test oil composition A, B and C is shown in table 3.For accurately estimating and comparing the performance of each base oil mixture under ASTM sequence III G test conditions reliably, the additive-package in these test oils keeps substantially constant.
In ASTM sequence III G test, use comprises III, the viewed result of test oil A of the synergism mixture of IV and V class base oil feedstock, comprise the viewed result of test oil B of the III class base oil feedstock of no IV class base oil feedstock and V class base oil feedstock mixture with use, or use comprises no III class base oil feedstock, the viewed result of test oil C of the IV class base oil feedstock and the II class base oil feedstock of V class base oil feedstock mixture compares, have significantly and unexpected the improvement aspect increasing in that kinetics is sticking, having aspect the average weighted piston deposit significantly and unexpected the improvement, aspect oil consumption, having significantly and unexpected the improvement.
Comprise have III, the lubricant compositions of the base oil composition of the novel synergism mixture of IV and V class base oil feedstock, shown in the data that this paper provides, in ASTM sequence III G test, provide outstanding performance, satisfied or surpassed the requirement of ILSAC GF-4 and the stricter GM4718M of General Motors Corporation standard.Lubricating composition of the present disclosure is providing aspect the ASTM sequence III G experimental performance than unexpected and significant improvement of the sequence III G experimental performance of conventional lubrication composition.In sum, the present invention relates to following technical scheme: 1. the engine oil lubricants composition of improved sticking control and piston cleanliness can be provided, and wherein this lubricant compositions comprises: the synergism base oil mixture of mainly being made up of at least a III class base oil, at least a IV class base oil and at least a V class base oil of main amount.2. the lubricant compositions of scheme 1, wherein the amount of III class base oil is about 50wt% at the most, the amount of IV class base oil is about 20wt%～about 45wt%, and the amount of V class base oil is about 5wt%～about 25wt%, is that benchmark calculates with the base oil mixture.3. the lubricant compositions of scheme 1 also comprises a spot of engine oil additive composition.4. the lubricant compositions of scheme 1, wherein said composition comprises the phosphorus at least about 250ppm.5. the lubricant compositions of scheme 1, wherein said composition does not have the transition metal beyond dezincifying substantially.6. the lubricant compositions of scheme 5, wherein transition metal is selected from titanium and molybdenum.7. the lubricant compositions of scheme 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved oil consumption is provided.8. the lubricant compositions of scheme 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved oil consumption is provided.9. the lubricant compositions of scheme 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount the improved sticking drawing that increases is provided.10. the lubricant compositions of scheme 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved sticking control is provided.11. provide the kinetics that can in ASTM sequence III G test, reach 40 ℃ under sticking increase to about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade engine oil lubricants method for compositions, comprise III class base oil, IV class base oil and V class base oil be mixed into synergism base oil mixture.12. the method for scheme 11, wherein the amount of III class base oil is about 50wt% at the most, and the amount of IV class base oil is about 20wt%～about 45wt%, and the amount of V class base oil is about 5wt%～about 25wt%, is that benchmark calculates with the base oil mixture.13. the method for scheme 11, wherein lubricant compositions comprises the phosphorus at least about 250ppm.14. the method for scheme 11, wherein lubricant compositions does not have the transition metal beyond dezincifying substantially.15. the method for scheme 14, wherein transition metal is selected from titanium and molybdenum.16. the method for scheme 11, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved oil consumption are provided.17. the method for scheme 11, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved oil consumption are provided.18. the method for scheme 11, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved sticking control are provided.19. the method for scheme 11, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved sticking control are provided.20. the method for scheme 11 also comprises and mixes a spot of engine oil additive composition and the main base oil mixture of measuring.21. the method for lubricating engine parts, comprise: described engine parts are contacted with lubricant compositions, wherein said lubricant compositions 40 ℃ of kinetics down in ASTM sequence III G test is sticking increase to about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade, and wherein said lubricant compositions comprises the consonance base oil mixture of III class base oil, IV class base oil and the V class base oil of main amount.22. the method for scheme 21, wherein the amount of III class base oil is about 50wt% at the most, and the amount of IV class base oil is about 20wt%～about 45wt%, and the amount of V class base oil is about 5wt%～about 25wt%, is that benchmark calculates with the base oil mixture.23. the method for scheme 21, wherein said lubricant compositions do not have the transition metal beyond dezincifying substantially.24. the method for scheme 23, wherein said transition metal is selected from titanium and molybdenum.25. the method for scheme 21, wherein said lubricant compositions comprises the phosphorus at least about 250ppm.26. the method for scheme 21, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved oil consumption are provided.27. the method for scheme 21, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved oil consumption are provided.28. the method for scheme 21, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved sticking control are provided.29. the method for scheme 21, wherein said lubricant compositions are compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved sticking control are provided.30. the method for scheme 21, wherein said lubricant compositions also comprises the minor amounts of additives composition.
In a lot of places of this specification sheets, with reference to many U.S. patents and publication.All these documents of quoting all draw in the disclosure with reference clearly, just like being showed in this paper fully.
For those skilled in the art, considered the enforcement of specification sheets disclosed herein and embodiment after, other embodiment of the present disclosure will be conspicuous.Used in the whole text as this specification sheets and claim, " one " is individual can to refer to one or more than one.Except as otherwise noted, all numerals of the amount of expression component, the performance such as molecular weight, percentage ratio, ratio, reaction conditions etc. all are interpreted as all being modified with in all cases term " about " in this specification sheets and the claim.Therefore, unless opposite explanation is arranged, the digital parameters of being mentioned in this specification sheets and claim all is an approximation, and they can become with the expected performance by acquisition that the present invention pursues.At least, and be not intended to limit the application of equivalent body principle in the claim scope, each digital parameters should be seen as according to the significant figure of being reported at least and use common rounding-off method.Though the digital scope and the parameter of expression broad scope of the present invention all are approximations, the numerical value of mentioning in specific embodiment is all reported accurately as far as possible.But any numerical value contains the error that the standard deviation that exists in the experimental measurement separately because of them certainly leads to inherently.Be intended to a specification sheets and embodiment and only regard the typical case as for example, true scope of the present invention and spirit are then by following claim indication.
Previous embodiments is easy to do in practice and revises in a large number.Therefore be not intended to these embodiments be limited to mentioned above for example in.On the contrary, previous embodiments comprises effective legally equivalent body in the spirit and scope of claims.
The patentee is used for the public with any disclosed embodiment unintentionally, and to following degree: any disclosed correction or change may not drop on literal in the scope of this claim, but, they are regarded as the application's a part according to equivalent principle.

Claims (9)

1. the engine oil lubricants composition of improved sticking control and piston cleanliness can be provided, and wherein this lubricant compositions comprises:
The synergism base oil mixture of mainly forming of main amount by at least a III class base oil, at least a IV class base oil and at least a V class base oil.
2. the lubricant compositions of claim 1 also comprises a spot of engine oil additive composition.
3. the lubricant compositions of claim 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved oil consumption is provided.
4. the lubricant compositions of claim 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved oil consumption is provided.
5. the lubricant compositions of claim 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of II class base oil that comprises main amount improved sticking control is provided.
6. the lubricant compositions of claim 1, wherein said composition is compared with the lubricant compositions of the base oil of being made up of III class base oil that comprises main amount improved sticking control is provided.
7. provide the kinetics that can in ASTM sequence III G test, reach 40 ℃ under sticking increase to about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade engine oil lubricants method for compositions, comprise III class base oil, IV class base oil and V class base oil be mixed into synergism base oil mixture.
8. the method for claim 7 also comprises and mixes a spot of engine oil additive composition and the main base oil mixture of measuring.
9. the method for lubricating engine parts comprises:
Described engine parts are contacted with lubricant compositions, wherein said lubricant compositions 40 ℃ of kinetics down in ASTM sequence III G test is sticking increase to about 90% or lower and average weighted piston deposit be about 5.5 or more high-grade, and wherein said lubricant compositions comprises the consonance base oil mixture of III class base oil, IV class base oil and the V class base oil of main amount.
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FR2915998A1 (en) 2008-11-14
JP2008239953A (en) 2008-10-09
DE102007061422A1 (en) 2008-10-02
US20080236538A1 (en) 2008-10-02
JP5094369B2 (en) 2012-12-12
GB2448022A (en) 2008-10-01

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