CN102959064A - Lithium complex grease with improved thickener yield - Google Patents

Lithium complex grease with improved thickener yield Download PDF

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Publication number
CN102959064A
CN102959064A CN2011800320273A CN201180032027A CN102959064A CN 102959064 A CN102959064 A CN 102959064A CN 2011800320273 A CN2011800320273 A CN 2011800320273A CN 201180032027 A CN201180032027 A CN 201180032027A CN 102959064 A CN102959064 A CN 102959064A
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grease composition
composition
agent
thickening
grease
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CN102959064B (en
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S·贝雷特
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Chevron USA Inc
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Chevron USA Inc
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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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/06—Mixtures of thickeners and additives
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/02—Mixtures of base-materials and thickeners
    • 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
    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • 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
    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/02—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
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    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/02—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • C10M117/04—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M123/00—Lubricating compositions characterised by the thickener being a mixture of two or more compounds covered by more than one of the main groups C10M113/00 - C10M121/00, each of these compounds being essential
    • C10M123/04—Lubricating compositions characterised by the thickener being a mixture of two or more compounds covered by more than one of the main groups C10M113/00 - C10M121/00, each of these compounds being essential at least one of them being a macromolecular compound
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
    • C10M2203/108—Residual fractions, e.g. bright stocks
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    • 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
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/022—Ethene
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    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/024—Propene
    • C—CHEMISTRY; METALLURGY
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • C—CHEMISTRY; METALLURGY
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
    • C—CHEMISTRY; METALLURGY
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/1256—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids used as thickening agent
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic used as thickening agent
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
    • C10M2207/1276—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic used as thickening agent
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
    • C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
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    • 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
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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    • C10N2050/10—Semi-solids; greasy

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  • Lubricants (AREA)

Abstract

Provided is an improved lithium complex grease. The grease composition has a higher thickener yield, yet good mechanical properties. The grease composition comprises a lubricating oil, a lithium complex thickener and a copolymer, which in one embodiment may comprise styrene and butadiene.

Description

Lithium double composition grease with thickening efficiency of improvement
Background of invention
Invention field
The present invention relates to have the lithium double composition grease of the thickening efficiency (thickener yield) of improvement.More specifically, provide comparatively economical and effective lithium double composition grease, it has the base oil in the lubricating grease matrix included in of higher weight.
Description of Related Art
The lithium double composition grease is the known and manufactured existing quite a while.This class lubricating grease can be by any various lubricating oil viscosity basestocks, and the composition of this class base-material and mixture make.Gained lubricating grease all has the required lubricating grease characteristic of diversified level significantly, comprises dropping point, penetration degree, machinery and/or shear stability, oxidation-resistance etc., then will consider all these characteristics when addressing the lubricating life of lubricating grease.
The lubricant formulations and the lubricating grease that contain extensive various differing materials have been described in the document.The lithium double composition grease that comprises the agent of lithium composite thickening and lubricating base oil is known.
Yet, still need penetration degree to remain in the tolerance interval also simultaneously at economical and commercial still acceptable lubricating grease.
Summary of the invention
The grease composition of the lithium composite thickening agent of the lubricant viscosity base oil that comprises main amount and minor amount is provided.This grease composition also can comprise multipolymer, for example the multipolymer of vinylbenzene and divinyl.Generally speaking, said composition can comprise less than 25wt% and thickening material described copolymer in combination.Grease composition of the present invention shows higher thickening efficiency, thinks that this is that combination by the agent of lithium composite thickening and multipolymer causes that described multipolymer is made of vinylbenzene and divinyl in one embodiment.
In one aspect of the invention, having found a kind ofly not only provides good mechanical property, but also the grease composition of good economy is provided.The thickening efficiency of this lubricating grease is much higher owing to the existence of the multipolymer of vinylbenzene and divinyl.The comparable combination object height at least 25% that does not have described multipolymer of described thickening efficiency, high 35% or even high by 50%.
Describe in detail
Be used for lubricant base oil of the present invention and can be selected from I class, II class, III class, IV class and V series lubricant agent base oil and composition thereof.Lubricant base oil of the present invention comprises the synthetic lubricant base oil, for example Fisher-Tropsch derived lubricant base oil, and the mixture of non-synthetic lubricant base oil and synthetic lubricant base oil.The specification that has shown the lubricant base oil that in API Interchange Guidelines (API Publication1509), uses sulphur content, saturated compound content and viscosity index definition in the following table 1:
Table 1
Figure BDA00002664546200021
The facility of producing I series lubricant agent base oil typically extracts component than low-viscosity index (VI) with solvent, makes the VI of stock oil bring up to required specification.These solvents are phenol or furfural typically.Solvent extraction obtains having less than 90% saturated compound with greater than the product of 300ppm sulphur.Most of lubricant output are I class category in the world.
The facility of producing II series lubricant agent base oil typically use hydrotreatment for example hydrocracking or harsh hydrotreatment so that the VI of stock oil brings up to specification value.The use of hydrotreatment typically makes saturated compound content bring up to be higher than 90, and sulphur content is dropped to be lower than 300ppm.About 10% lubricant base oil production is II class category in the world, and about 30% output of the U.S. is the II class.
The facility of producing III series lubricant agent base oil is typically produced the product of very high VI with the wax isomerization technique.Because initial charge is wax vacuum gas oil (VGO) or contains all saturated compounds and the wax of a small amount of sulphur, so having, the III series products is higher than 90 saturated compound content, be lower than the sulphur content of 300ppm.For wax isomerization method was produced III series lubricant agent base oil, fischer-tropsch wax was desirable charging.In the world in the lubricant supply only sub-fraction be III class category.
Low polyacene derivative by positive structure alhpa olefin obtains IV series lubricant agent base oil, and is referred to as polyalphaolefin (PAO) lubricant base oil.
V series lubricant agent base oil is all other lubricant base oils.This class comprises that the lubricant base oil of synthesizing ester, silicone lubricant, halogenation and VI value are lower than 80 lubricant base oil.With regard to the application's book, V series lubricant agent base oil does not comprise synthetic vinegar class and silicone lubricant.V series lubricant agent base oil is typically by for the production of the same procedure of I class and II series lubricant agent base oil but not too prepared by oil under the exacting terms.
The synthetic lubricant base oil meets API Interchange Guidelines, but, ethylene oligomerization synthetic by fischer-tropsch, positive structure alhpa olefin is oligomeric or boiling point is lower than C 10Olefin oligomerization prepare.
The lithium composite thickening agent that is used for grease composition of the present invention can be any known lithium composite thickening agent.For example, the agent of lithium composite thickening can comprise derive self-contained epoxy group(ing) and/or the unsaturated part of olefinic (unsaturation) lipid acid lithium soap and derived from the dilithium salt of unbranched dicarboxylic acid and/or in one embodiment derived from hydroxyl substituted carboxylic acid salicylic lithium salts for example.
Described thickening material can be C 12-C 24The mixture of the lithium soap of hydroxy fatty acid and single lithium salts of boric acid and can comprise for example salicylic lithium salts of the second hydroxycarboxylic acid.
Described mixture can comprise C 12-C 24The lithium soap of hydroxy fatty acid thickening material antioxidant, this lithium soap comprise an alkali metal salt and dioxime (diozime) compound of hydroxy-benzoic acid.An alkali metal salt of hydroxy-benzoic acid comprises Whitfield's ointment two lithiums.
This mixture can be the lithium soap as the combination of following material: C 4-C 12The dilithium salt of dicarboxylic acid is nonane diacid two lithiums for example, 9-, 10-or 12-hydroxyl C 12-C 24The lithium soap of lipid acid is the 12-hydroxy lithium stearate for example; With the lithium salts that in lubricating grease, is formed by the second hydroxycarboxylic acid original position, wherein-OH be connected with carbon atom apart from no more than 6 carbon of carboxyl and wherein any in those groups can partly be connected with aliphatic series or the aromatics of described material.
Perhaps, the lithium mixture can comprise compound lithium soap thickening material, C 3-C 14The lithium salts of hydroxycarboxylic acid and the combination of thiadiazoles.Described lubricating grease can also be randomly and is preferably contained other antioxidant, preferred amines type or phenol type antioxidant, most preferably amine type antioxidant.
In one embodiment, the agent of lithium composite thickening only is for example lithium salts of oxystearic acid of carboxylic acid, particularly hydroxycarboxylic acid.Such thickening material can be for example by making a hydronium(ion) oxidation lithium (lithium hydroxyl monohydrate) and oxystearic acid react to prepare.
Described lubricating grease can comprise main amount for example greater than the base oil of 50 % by weight, and minor amount is namely less than thickening material and any other additive of 50 % by weight.Certainly, lubricating grease of the present invention can contain any other typical grease additive such as rust-preventive agent, dinonyl naphthalene sulfonate barium (barium dinonyl naphtheline fulfonate), sequential adjustment agent (order modifier), tackiness agent, extreme pressure agent, minute aqua, dyestuff etc.Typical additive and their functional description are in Modem Lubricating Greases by C.J.Boner, among Scientific Publication (G.B.) Ltd.1976.
For the present invention, multipolymer is as the additive particularly important.The multipolymer that multipolymer can be based on hydrocarbon is the multipolymer of vinylbenzene and divinyl or ethene and propylene for example.In one embodiment, copolymer additives is the multipolymer of vinylbenzene and divinyl.Find to be used in combination on a small quantity with the agent of lithium composite thickening, for example 2-6 % by weight or 2-5 % by weight, perhaps such multipolymer of 3-4 % by weight in another embodiment makes thickening efficiency raising 25-50%.
Bringing the weight of the base oil in the lubricating grease matrix when grease thickening definitions of efficiency is the thickening material of per unit weight into, is for example crucial deciding factor of penetration degree, shear stability and water-repellancy and preparation cost of lubricating grease mechanical property.The combination of the multipolymer of vinylbenzene and divinyl and the agent of lithium composite thickening allows to use relatively large base oil, thereby promotes grease thickening efficient, and keeps simultaneously good mechanical property.This result is more economical again effective lubricating grease also.
This analog copolymer of vinylbenzene and divinyl is commercially available.For example, V-211 derives from Functional Products, Inc.of Macedonia, the vinylbenzene of Ohio and the multipolymer of divinyl.This multipolymer is the white that is instantly-soluble-yellow rubber powder.These multipolymers of vinylbenzene and divinyl can be combined with other polymkeric substance use, but they must be present in the grease composition of the present invention.
By being used in combination styrene/butadiene copolymers with the agent of lithium composite thickening, obtained higher thickening efficiency.Described efficient, it relates to the amount of bringing the base oil in the lubricating grease matrix when still realizing good mechanical properties into, can improve at least about 25 % by weight, about 35 % by weight or at least about 50 % by weight.Shown this class grease composition show at least about 290, at least about 300 with even at least about 310 working needle in-degree performance.Described composition can be used for any Automobile Grease or industrial grease is used.For example, grease composition can be used for wheel bearing, automobile chassis or is used for oilgear.
Following examples help to illustrate the present invention and advantage thereof, still should not think to limit the scope of the invention.
Embodiment
By being prepared as follows several lubricating grease:
In the still that opens wide, under room temperature, the base oil of the formula ratio of 1-50wt% is mixed.Singly sour and diacid, the emulsifying agent of formula ratio are added with water [with 50% basic oil mass] and stir and be heated to simultaneously 200 °F.Under 200 °F, slowly add lithium hydroxide.In case the adding lithium hydroxide is then with this mixture heating up to 400 °F.Holding it in 400 °F also stirred 20 minutes simultaneously.Then when stirring, lubricating grease is cooled to 175 °F.Under 175 °F, add performance additive for example rust-preventive agent, extreme pressure agent and antiwear agents and polymkeric substance, tackifier.By when stirring, slowly adding the penetration degree that base oil is regulated described lubricating grease.When reaching the penetration degree scope, described lubricating grease is cooled to room temperature and aptly storage.
Penetration degree according to the ASTMD217 measuring lubricating grease.The results are shown in the following table.In this table, employed various additives are as follows:
1GEPAL CO-430.Surfonic N-40, Naphthenic Acid: emulsifying agent
Lubrizol528C, EC5426A: rust-preventive agent
Glycerin, Lubrizol5200: extreme pressure agent, antiwear agents
The Lubrizol2017:PIB polymkeric substance
Lubrizol2002D: functionalized olefin polymer
V-2II: the multipolymer of styrene butadiene
V-207: the multipolymer of ethene and propylene
Think that experiment A and B are benchmark (base) situations of using PIB polymkeric substance or functionalized olefin polymer.In these two kinds of situations, used basic oil mass is 80% of formula ratio.In experiment C and D, when substituting these polymkeric substance with styrene butadiene or ethylene-propylene copolymer, used basic oil mass is brought up to respectively 157 and 132% of formula ratio.Along with the amount that improves gradually base oil in the prescription, thickening efficiency correspondingly improves.In styrene-butadiene copolymer and situation that PIB and functionalized polymeric are combined with, experiment E, F, G and H demonstrate the thickening efficiency of raising.
Do not depart from the scope of the present invention with spirit under various modifications of the present invention and change and will become to those skilled in the art obvious.By the commentary of preamble specification sheets, it is obvious that other purpose and advantage will become to those skilled in the art.

Claims (15)

1. the grease composition that has the thickening efficiency of improvement, it comprises the lubricating base oil of main amount and the lithium composite thickening agent of minor amount.
2. the grease composition of claim 1, wherein the amount of thickening material and any additive is less than the 25wt% of this grease composition.
3. the grease composition of claim 1, it also comprises the multipolymer of vinylbenzene and divinyl.
4. the grease composition of claim 1, the agent of wherein said lithium composite thickening comprises carboxylic acid or stearic lithium salts.
5. the grease composition of claim 4, the agent of wherein said lithium composite thickening comprises the reaction product of a hydronium(ion) oxidation lithium and oxystearic acid.
6. the grease composition of claim 4, wherein the amount of styrene/butadiene copolymers is about 2-6 % by weight.
7. the grease composition of claim 6, wherein the amount of styrene/butadiene copolymers is about 3-4 % by weight.
8. the grease composition of claim 1, wherein said composition has the working needle in-degree at least about 290.
9. the grease composition of claim 1, wherein said composition has the working needle in-degree at least about 300.
10. the grease composition of claim 3, wherein said composition has the working needle in-degree at least about 310.
11. the grease composition of claim 3, the agent of wherein said lithium composite thickening comprises the lithium salts of carboxylic acid, and the amount of styrene/butadiene copolymers is about 2-6 % by weight, and said composition has the working needle in-degree at least about 300.
12. the method for lubrificated wheels axle bearing, the method comprise that the grease composition of the thickening efficiency that apparatus is improved applies wheel bearing, described grease composition comprises the lubricating base oil of main amount and the lithium composite thickening agent of minor amount.
13. 12 method of claim, the lithium composite thickening agent of wherein said grease composition also comprises the lithium salts of carboxylic acid, and the amount of styrene/butadiene copolymers is about 2-6 % by weight, and described composition has the working needle in-degree at least about 300.
14. the method for lubricated motor-vehicle chassis, the method comprises that the grease composition that uses the thickening efficiency with improvement is to lubricating grease on the described chassis, described grease composition comprises the lithium composite thickening agent of minor amount, and it also comprises the multipolymer of vinylbenzene and divinyl.
To have the grease composition paint gear of the thickening efficiency of improvement 15. the method for oilgear, the method comprise, described grease composition comprise minor amount the agent of lithium composite thickening, it also comprises the multipolymer of vinylbenzene and divinyl.
CN201180032027.3A 2010-06-30 2011-05-02 There is the lithium double composition grease of the thickening efficiency of improvement Expired - Fee Related CN102959064B (en)

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