CN107406792A - Lubricant composition - Google Patents

Lubricant composition Download PDF

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Publication number
CN107406792A
CN107406792A CN201680018638.5A CN201680018638A CN107406792A CN 107406792 A CN107406792 A CN 107406792A CN 201680018638 A CN201680018638 A CN 201680018638A CN 107406792 A CN107406792 A CN 107406792A
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China
Prior art keywords
thickener
lubricant composition
polyamide
acid
base oil
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Granted
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CN201680018638.5A
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Chinese (zh)
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CN107406792B (en
Inventor
泽口涉
井内基之
筱崎晃
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Nok Klueber Co Ltd
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Nok Klueber Co Ltd
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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
    • C10M169/02—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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • 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
    • 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
    • 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
    • C10M117/06—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having more than one carboxyl group bound to an acyclic carbon atom or cycloaliphatic carbon atom
    • 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
    • C10M117/08—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • 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
    • 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
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/022—Ethene
    • 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
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/106—Carboxylix acids; Neutral salts thereof used as thickening agents
    • 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
    • C10M2207/10—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
    • 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
    • C10M2207/10—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
    • 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
    • C10M2207/10—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
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C10M2215/065—Phenyl-Naphthyl amines
    • 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
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/10—Semi-solids; greasy

Abstract

The present invention provides a kind of lubricant composition, and it has good low-temperature characteristics, can suppress the deterioration of the polyamide part under particularly applied at elevated temperature environment, hardly reduces elongation at break and can be maintained at higher level.The polyamide part of the present invention is supplied to use on the surface of at least the above sliding part of the polyamide part with the sliding part slided with miscellaneous part by the use of lubricant composition as lubricant, it is characterized in that, contain base oil and thickener, the base oil is synthetic hydrocarbon oil, the thickener is at least one of barium compound soap and lithium compound soap metal complex soaps, and kinematic viscosity of the above-mentioned base oil at 40 DEG C is 30~200mm2/ s scope, the dropping point of above-mentioned thickener is more than 270 DEG C.

Description

Lubricant composition
Technical field
The present invention relates to the surface of at least sliding part in the polyamide part with sliding part as lubricant and The polyamide part lubricant composition used is supplied to, the sliding part is for example for resin component or by metal material The miscellaneous part of composition is slided or slided on miscellaneous part.
Background technology
In the past, lubricating grease was used as lubricant group in the various industrial fields such as steel, automobile, common mechanical, precision optical machinery Compound and used.In recent years, for parts such as the sliding parts of auto parts and components etc., in addition to lightweight, cost degradation, from From the aspect of using in high temperature environments, polyamide is used mostly in order to improve heat resistance.
For lubricating grease used in the sliding part in polyamide part, except lubricity, low temperature properties and Beyond heat resistance, it is also necessary to which the characteristic of polyamide part deterioration (embrittlement) will not be made by possessing.But as polyamide resin Fat part lubricating grease and use it is general used in lithium base grease (lithium soap grease), urea lubricating grease In the case of, the tendency for producing following problem be present：For the polyamide part used under high temperature (such as 150 DEG C) environment Aggressiveness is shown, deteriorates polyamide part, so as to cause the performance impairment of polyamide component of machine. That is, there is the tendency for causing polyamide part to deteriorate because of oxidation in lithium base grease, in addition, for urea lubricating grease, Although the heat resistance of urea lubricating grease in itself is higher, if carrying out resin dipping under above-mentioned hot environment, exist as follows Tendency：A part for amine in urea can dissociate, and the amine after dissociating shows aggressiveness to polyamide part, so as to cause Polyamide deteriorates.
For example, following lubricant compositions are recorded in patent document 1：In order in high temperature (being 140 DEG C in embodiment) ring Suppress the deterioration of polyamide part under border, containing synthetic hydrocarbon oil, Urea Series thickener and zinc stearate, also contain and be selected from Trimellitate, aromatic sulfonamide, at least one kind of compound of phthalic acid ester and hindered phenol.
But for the lubricant compositions containing Urea Series thickener described in patent document 1, exist as follows Problem：As described above, show aggressive for polyamide part in high temperature environments and cause polyamide part Deterioration, so that the performance of the component of machine of polyamide, particularly elongation at break decline.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-102191 publications
The content of the invention
The invention problem to be solved
Therefore, it is an object of the invention to provide a kind of polyamide part lubricant composition, it passes through realization Appropriateization of base oil and thickener and there is good low-temperature characteristics, and can suppress poly- under particularly applied at elevated temperature environment The deterioration of amide resin part, hardly reduce elongation at break and higher level can be maintained at.
Means for solving the problems
In order to solve above-mentioned problem, of the invention mainly consists of.
(1) a kind of polyamide part lubricant composition, it is with the sliding part slided with miscellaneous part The surface of at least the above sliding part of polyamide part is supplied to use as lubricant, it is characterised in that contains：Base Plinth oil and thickener, the base oil are synthetic hydrocarbon oil, and the thickener is at least one of barium compound soap and lithium compound soap metal Compound soap, kinematic viscosity of the above-mentioned base oil at 40 DEG C are 30~200mm2/ s scope, the dropping point of above-mentioned thickener is 270 More than DEG C.
(2) the polyamide part lubricant composition described in above-mentioned (1), wherein, above-mentioned base oil is poly- α-alkene The single oil or the miscella of the poly-alpha-olefin and ethene-alpha-olefin copolymer of hydrocarbon.
(3) the polyamide part lubricant composition described in above-mentioned (1) or (2), wherein, above-mentioned miscellaneous part is Metal parts.
The effect of invention
In accordance with the invention it is possible to provide following polyamide part lubricant composition, it contains base oil and increasing Thick dose, the base oil is synthetic hydrocarbon oil, and the thickener is at least one of barium compound soap and lithium compound soap metal complex soaps, and And kinematic viscosity of the base oil at 40 DEG C is set to be 30~200mm2/ s scope, the dropping point of thickener reach more than 270 DEG C, from And the polyamide part lubricant composition has good low-temperature characteristics, particularly applied at elevated temperature ring can be suppressed The deterioration of polyamide part under border, hardly reduce elongation at break and higher level can be maintained at.
Embodiment
Next, embodiments of the present invention are illustrated below.
The polyamide part of the present invention is with lubricant composition poly- with the sliding part slided with miscellaneous part The surface of at least the above sliding part of amide resin part is supplied to use as lubricant, have concurrently good low-temperature characteristics with And both the excellent mechanical property (particularly elongation at break) particularly under applied at elevated temperature environment.
As miscellaneous part, such as resin material or metal material can be enumerated.Resin material can be and polyamide The composition identical resin material of part, alternatively, it is also possible to be to form different resin materials from it.It should be noted that In the case that miscellaneous part is metal parts, the lubrication of the present invention is used as lubricant on the surface of polyamide part Oil/fat composition because realize especially significant effect and it is preferred that.
Herein, " high temperature (use) environment " refers to environment of the atmosphere temperature in 130~150 DEG C of scope.
The lubricant composition of the present invention contains base oil and thickener.
(base oil)
In the present invention, base oil is synthetic hydrocarbon oil, and kinematic viscosity of the base oil at 40 DEG C is 30~200mm2/ s scope It is required.Because if kinematic viscosity of the synthetic hydrocarbon oil at 40 DEG C is less than 30mm2/ s, then it can promote polyamide resin The deterioration of fat part, in addition, if being higher than 200mm2/ s, then torque during low temperature (low temperature torque) raise.It should be noted that For base oil, in the case of the material beyond using synthetic hydrocarbon oil, such as ester system artificial oil, ether system artificial oil, have Resin component may be had undesirable effect, therefore preferably only by synthetic hydrocarbon oil formation base oil.As synthetic hydrocarbon oil, can enumerate Poly-alpha-olefin, ethene-alpha-olefin copolymer, polybutene.As by synthetic hydrocarbon oil formation base oil concrete example, particularly preferably Enumerate oily situation based on the single oil that will be made up of poly-alpha-olefin or be total to poly-alpha-olefin and ethene-alpha-olefin Oily situation based on the miscella of polymers.
In the present invention, poly-alpha-olefin refers to：Make by the one or two or more kinds of the alpha-olefin with more than 3 carbon atoms The polymer that the monomer of composition carries out homopolymerization or copolymerization and formed.
Here, as alpha-olefin, and it is not particularly restricted, the straight-chain terminal olefin that carbon number is 3~30 is preferably enumerated, it is more excellent The straight-chain terminal olefin that carbon number is 4~20 is elected, further preferably enumerates the straight-chain terminal olefin that carbon number is 6~16. More specifically, propylene, 1- butylene, 1- amylenes, 1- hexenes etc. can be enumerated.
It is preferred that poly-alpha-olefin relative to the overall proportioning of lubricant composition 67~91 mass % scope.In addition, In the case that synthetic hydrocarbon oil is the miscella of poly-alpha-olefin and ethene-alpha-olefin copolymer, preferably poly-alpha-olefin is relative to profit Scope of the overall proportioning of grease composition in 69~86 mass %.
In addition, the degree of polymerization for poly-alpha-olefin and not particularly restricted, in addition to the commonly known as material of oligomer. Furthermore it is possible to a kind of poly-alpha-olefin, the poly-alpha-olefin that can also be mixed with two or more is used alone.
In the present invention, ethene-alpha-olefin copolymer refer to using ethene and carbon number as more than 3 one or two or more kinds of α- Alkene is as the copolymer for forming monomer.
Herein, as the alpha-olefin in ethene-alpha-olefin copolymer, and it is not particularly restricted, carbon number is preferably enumerated as 3~30 Straight-chain terminal olefin, more preferably enumerate the straight-chain terminal olefin that carbon number is 4~20, further preferably enumerate carbon number as 6 ~16 straight-chain terminal olefin.More specifically, propylene, 1- butylene, 1- amylenes, 1- hexenes etc. can be enumerated.It is furthermore, it is possible to single 1 kind of poly-alpha-olefin solely is used, poly-alpha-olefin of more than two kinds can also be used.In addition, ethene-alpha-olefin copolymer can have There is any of random copolymer, alternate copolymer, periodic copolymer, block copolymer structure.
Scope of the number-average molecular weight of ethene-alpha-olefin copolymer 40,000~200,000, weight average molecular weight 40, 000~200,000 scope.
In the case where synthetic hydrocarbon oil is the miscella of poly-alpha-olefin and ethene-alpha-olefin copolymer, optimal ethylene-α- Olefin copolymer relative to the overall proportioning of lubricant composition 1.5~3.5 mass % scope.If ethene-alpha-olefin The proportioning of copolymer then sometimes can not bring up to Basic oil Viscosity required numerical value less than 1.5 mass % in proper range, In addition, if being more than 3.5 mass %, then Basic oil Viscosity becomes too high compared with proper range sometimes.
(thickener)
It is high from heat resistance and will not make from the aspect of polyamide deteriorates, it is necessary to will in lubricant composition of the invention Thickener is defined at least one of lithium compound soap and barium compound soap metal complex soaps.Also, from suppression lubricant composition The deterioration (when high temperature is durable) to polyamide part and polyamide part is set to remain higher disconnected in high temperature environments Split from the aspect of elongation, it is necessary to which the dropping point of thickener is defined into more than 270 DEG C.Thickener dropping point less than 270 DEG C In the case of, lubricant composition is possible to attack polyamide part when high temperature is durable and cause its deterioration.
Herein, lithium compound soap refers to the soap obtained from lithium hydroxide makes a variety of carboxylic acid or ester saponification.In addition, barium is answered It is the soap obtained from barium hydroxide makes a variety of carboxylic acid or ester saponification to close soap.
As lithium compound soap or the concrete example of barium compound soap, can enumerate by making the aliphatic acid such as stearic acid, oleic acid, palmitic acid And/or it is 12~24 hydroxy fatty acid and selected from aromatic carboxylic acid, carbon number to have the carbon number of more than 1 hydroxyl in the molecule At least one of aliphatic dicarboxylic acid and carboxylic acid monoamides for 2~20 (more preferably carbon number is 4~12) and such as hydrogen-oxygen Material obtained from changing the reaction of the barium compounds such as lithium compound or barium hydroxide such as lithium.
It is and not particularly restricted as the hydroxy fatty acid that above-mentioned carbon number is 12~24, such as 12- hydroxy stearates can be enumerated Acid, 12- hydroxylauric acids, 16- hydroxy-palmitic acids etc., in these above-mentioned materials, particularly preferred 12- hydroxy stearic acids.
As aromatic carboxylic acid, benzoic acid, phthalic acid, M-phthalic acid, terephthalic acid (TPA), inclined benzene three can be included Acid, Pyromellitic Acid, salicylic acid, p-hydroxy Benzoic Acid etc..
In addition, as the aliphatic dicarboxylic acid that above-mentioned carbon number is 2~20, it is and not particularly restricted, such as oxalic acid, third can be enumerated Diacid, butanedioic acid, methylsuccinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, decanedioic acid, nonane dicarboxylic acid, Decane dicarboxylic acid, heneicosane dicarboxylic acid, dodecanedicarboxylic acid, astrotone, tetradecane dicarboxylic acid, pentacosane dicarboxylic acid, Hexadecane dicarboxylic acid, heptadecane dicarboxylic acid, octadecane dicarboxylic acids etc., preferably using adipic acid, pimelic acid, suberic acid, azelaic acid, Decanedioic acid, nonane dicarboxylic acid, decane dicarboxylic acid, heneicosane dicarboxylic acid, dodecanedicarboxylic acid, astrotone, the tetradecane two Carboxylic acid, pentacosane dicarboxylic acid, hexadecane dicarboxylic acid, heptadecane dicarboxylic acid, octadecane dicarboxylic acids etc..It is excellent in these above-mentioned materials Select azelaic acid, decanedioic acid.
Also, as carboxylic acid monoamides, can enumerate above-mentioned dicarboxylic acids a carboxyl be amidated after material.As excellent The carboxylic acid monoamides of choosing, can enumerate azelaic acid or decanedioic acid a carboxyl be amidated after material.
As the amine being amidated, for example, can enumerate butylamine, amylamine, hexylamine, heptyl amice, octylame, nonyl amine, decyl amine, lauryl amine, The Armeens such as tetradecy lamine, cetylamine, octadecylamine, two lauryl amines；Di-n-propylamine, diisopropylamine, dibutyl amine, diamylamine, February The fat such as osmanthus base amine, monomethyl lauryl amine, distearyl amine, monomethyl stearic amine, myristyl amine, two palmityl amines Race's secondary amine；The aliphatic unsaturated amines such as allylamine, diallylamine, oleyl amine, two oil base amine；Cyclopropylamine, ring butylamine, cyclopentamine, The ester ring type amine such as cyclohexylamine；The fragrance such as aniline, methylaniline, MEA, benzylamine, dibenzyl amine, diphenylamine, Alpha-Naphthyl amine Race's amine etc., preferably using hexylamine, heptyl amice, octylame, nonyl amine, decyl amine, lauryl amine, tetradecy lamine, cetylamine, octadecylamine, two lauryl amines, Dibutyl amine, diamylamine, monomethyl lauryl amine, monomethyl octadecylamine, oleyl amine etc..
, can be by by carboxylic acid and/or its ester and above-mentioned metal hydroxide when coordinating lithium compound soap or during barium compound soap In thing input base oil, and make its saponification in base oil and coordinate.
When by carrying out saponification in base oil to prepare lithium compound soap or barium compound soap, for example, as carboxylic acid, It is preferred that use the combination of stearic acid and/or 12- hydroxy stearic acids and azelaic acid or decanedioic acid etc..
It should be noted that when carrying out saponification in base oil, a variety of carboxylic acids and/or its ester, sour acyl can be made Amine carries out saponification simultaneously, and them can also be made gradually to carry out saponification.
It is 8~18 matter preferably with respect to the overall proportioning of lubricant composition in the case where thickener is lithium compound soap Measure %.If use level is possible to increase and causes the bin stability of lubricant composition to drop less than 8 mass % from oil content Low, in addition, if being more than 18 mass %, then low temperature torque during low temperature is possible to increase.
It is 27~33 matter preferably with respect to the overall proportioning of lubricant composition in the case where thickener is barium compound soap Measure %.If use level is possible to increase and causes the bin stability of lubricant composition less than 27 mass %, oil from degree Reduce, in addition, if being more than 33 mass %, then low temperature torque during low temperature is likely to decrease.
(other)
In lubricant composition, in the range of it will not be impacted to the effect of the present invention, it can also enter as needed One step adds the antioxidant added in the past in lubricating grease, antirust agent, extreme pressure agent, oiliness improver, viscosity index improving agent etc. Other additives.
As antioxidant, such as 2,6- di-tert-butyl-4-methy phenols, 4 can be enumerated, 4 '-di-2-ethylhexylphosphine oxide (2,6- bis- uncles Butylphenol) etc. phenol system antioxidant；Alkyl diphenyl base amine, triphenylamine, phenyl-α-naphthylamine, phenthazine, alkylated benzenes Antioxidants of amine system such as base-Alpha-Naphthyl amine, alkylated phenthazine etc..It is in addition, also anti-oxidant using phosphorous antioxidant, sulphur system Agent etc..
As antirust agent, for example, can enumerate aromatic sulphonic acid or saturated aliphatic dicarboxylic acids Ca salt or Na salt, aliphatic acid, Fatty acid amine, alkyl sulfonic acid metal salt, alkyl sulfonic acid amine salt, oxidized paraffin wax, polyoxyalkyl ether etc..
As extreme pressure agent, such as the phosphorus series compounds such as phosphate, phosphite ester, phosphate amine salt can be enumerated；Thioether class, two The chalcogenide compounds such as thioether class；Dialkyl dithiophosphoric acid metal salt (not including zinc salt), dialkyldithiocarbamacompositions gold Belong to the chalcogenide compound metal salts such as salt；The chlorine such as chlorinated paraffin, chlorinated biphenyl based compound, molybdenum dialkyldithiocarbamacompositions (MoDTP) organo-metallic compound etc. such as.
As oiliness improver, such as aliphatic acid or its ester, higher alcohol, polyalcohol or its ester, aliphatic ester, aliphatic can be enumerated Amine, fatty acid monoglyceride, lignite wax, acid amides system wax etc..
As viscosity index improving agent, for example, can enumerate polymethacrylates, ethylene-propylene copolymer, polyisobutene, Alkyl styrenes, styrene-isoprene hydrogenated copolymer etc..
Prepare composition by the following method etc.：Above-mentioned each composition of ormal weight is added, utilizes three rollers or high pressure homogenization Device is sufficiently carried out being kneaded to them.
Embodiment
Below based on embodiment, the present invention will be described in more detail, but the present invention is not limited to these embodiments.
(embodiment 1~7 and comparative example 1~6)
(1) preparation method of lubricant composition
The preparation method of lubricant composition is carried out by the following method.
(1-1) uses situation of the lithium compound soap (Li-Comp) as thickener
First, base oil, 12- hydroxy stearic acids (thickener ingredients) and the hydroxide of ormal weight are coordinated in kettle is mixed Lithium (thickener ingredients), the heating stirring at a temperature of about 80~130 DEG C and carry out saponification.Further coordinate ormal weight Azelaic acid (thickener ingredients) and the heating stirring at a temperature of about 80~200 DEG C, lithium hydroxide is further added thereto and (is increased Thick dose of composition) and saponification is carried out, then cool down and generate spawn.Added in the spawn of the generation each Kind additive is simultaneously stirred, and then makes it from roller mill or high-pressure homogenizer by thus preparing with Tables 1 and 2 Shown use level (quality %) and the lubricant composition containing each composition as shown below.It is right for saponification It is set to more than 1 hour in the lubricant composition for being combined with thickener A, is set for the lubricant composition for being combined with thickener E For less than 30 minutes.It should be noted that for the amount of each composition for forming thickener A, E of cooperation, relative to thickening The total amount of agent, 12- hydroxy stearic acids are 63.5 mass %, azelaic acid is 19 mass %, lithium hydroxide is 17.5 mass %.
(1-2) uses situation of the barium compound soap (Ba-Comp) as thickener
First, base oil, decanedioic acid (thickener ingredients) and the carboxylic acid list stearoyl of ormal weight are coordinated in kettle is mixed Amine (thickener ingredients), the heating stirring at a temperature of about 80~200 DEG C, thereto add barium hydroxide (thickener ingredients) and Saponification is carried out, then cools down and generates spawn.Various additives are added in the spawn of the generation simultaneously It is stirred, then makes it from roller mill or high-pressure homogenizer by thus preparing with the cooperation shown in Tables 1 and 2 The lubricant composition measured (quality %) and contain each composition as shown below.For saponification, increase for being combined with Thick dose of B lubricant composition is set to more than 30 minutes, and the lubricant composition for being combined with thickener F is set to less than 15 points Clock.It should be noted that for the amount of each composition for forming thickener B, F of cooperation, relative to the total amount of thickener, the last of the ten Heavenly stems Diacid is 27.5 mass %, carboxylic acid list stearmide is 41.5 mass %, barium hydroxide is 31 mass %.
(1-3) uses situation of the lithium soap (Li-OHST) as thickener
First, base oil, 12- hydroxy stearic acids (thickener ingredients) and the hydroxide of ormal weight are coordinated in kettle is mixed Lithium (thickener ingredients), the heating stirring at a temperature of about 80~130 DEG C and carry out saponification.And then arrived in heating stirring Cooled down after melting temperature and generate spawn.Various additives are added in the spawn of the generation to go forward side by side Row stirring, then makes it from roller mill or high-pressure homogenizer by thus preparing with the use level (matter shown in table 2 Measure %) and contain the lubricant composition of each composition as shown below.It should be noted that the composition thickener C for cooperation Each composition amount for, relative to the total amount of thickener, 12- hydroxy stearic acids are 88 mass %, and lithium hydroxide is 12 matter Measure %.
(1-4) uses situation of the urea (Urea) as thickener
First, at a temperature of 70~180 DEG C heating stirring base oil, methyl diphenylene diisocyanate (thickener ingredients) with And octylame (thickener ingredients), make its reaction, heated up, cool down after generate spawn.In the gel of the generation Various additives are added in material and are stirred, then make it from roller mill or high-pressure homogenizer by thus preparing Contain the lubricant composition of each composition as shown below with the use level (quality %) shown in table 2.It should be noted that For the amount of each composition for forming thickener D of cooperation, relative to the total amount of thickener, methyl diphenylene diisocyanate For 50 mass %, octylame is 50 mass %.
Poly-alpha-olefin A：40 DEG C of kinematic viscosity is 30mm2/ s (INEOS Oligomers Japan Company systems DURASYN 166)
Poly-alpha-olefin B：40 DEG C of kinematic viscosity is 46mm2/ s (INEOS Oligomers Japan Company DURASYN 168)
Poly-alpha-olefin C：40 DEG C of kinematic viscosity 5mm2/ s (INEOS Oligomers Japan Company DURASYN 162)
Poly-alpha-olefin D：40 DEG C of kinematic viscosity is 400mm2/ s (INEOS Oligomers Japan Company systems DURASYN 174)
Ethene-alpha-olefin copolymer：Number-average molecular weight 68000, weight average molecular weight 147000 (Showa Varnish Co., Ltd. L6Z-25 processed)
Thickener A：Dropping point is 280 DEG C of Li-Comp (lithium compound soap)
Thickener B：Dropping point is 270 DEG C of Ba-Comp (barium compound soap)
Thickener C：Dropping point is 200 DEG C of Li-OHST (lithium soap)
Thickener D：Dropping point is 270 DEG C of Urea (urea)
Thickener E：Dropping point is 255 DEG C of Li-Comp (lithium compound soap)
Thickener F：Dropping point is 230 DEG C of Ba-Comp (barium compound soap)
Antioxidant：Phenyl naphthyl amines (Sanyo chemical conversion industry company system VANLUBE 81)
Antirust agent：Neutral calcium sulfonate (KING Co., Ltd. NA SUL CA 1089)
(2) evaluation method
(2-1) Basic oil Viscosity
Based on JIS K2283：2000 and determine Basic oil Viscosity.
(2-2) mixing consistency
Based on JIS K2220.7：2013 and determine mixing consistency.
(2-3) dropping point
Based on JIS K2220.8：2013 and determine dropping point.
(2-4) low-temperature characteristics (low temperature torque)
Based on JIS K2220.18:The torque capacity (starting torque) that during 2013-40 DEG C of measure, rotation is obtained when starting. In the present invention, the situation that the numerical value (index) of starting torque is less than 27 is set to qualified level, the situation more than 27 is set To be unqualified.
The compatibility (elongation at break) of resin and lubricant composition under (2-5) applied at elevated temperature environment
JIS K7162 are used as using nylon66 fiber (registration mark)：Test film specified in 1994, on its surface with about 1mm thickness Lubricating grease is applied, after standing 500 hours in putting it into 150 DEG C of thermostat, lubricant is wiped, carries out JIS K7162 (the test methods-the of plastics-tensile properties 1：General rule) specified in tension test, determine elongation at break.At this In invention, the situation that elongation at break is more than 30% is set to qualified level, the situation less than 30% is set to unqualified.
(3) evaluation result
Show the low-temperature characteristics (low temperature about each lubricant composition being coated on during polyamide part in Tables 1 and 2 Torque) and hot properties (elongation at break) evaluation result.
Table 1
Table 2
The numerical value with underscore is represented beyond the proper range of the present invention in (note) table 2 and performance is not up to qualified water It is flat.
It can be seen from the evaluation result shown in table 1, in embodiment 1~7, starting torque at -40 DEG C is 13~27, Relatively low state is kept at, in addition, elongation at break is also up to 30~43%, polyamide part and lubricant composition Compatibility it is also good.
And it can be seen from the evaluation result shown in table 2, in comparative example 1~6, starting torque and fracture at -40 DEG C Any one of the numerical value of elongation is not up to qualified level.
Industrial applicability
In accordance with the invention it is possible to provide a kind of polyamide part lubricant composition, it has good low temperature Characteristic, it can particularly suppress the deterioration of the polyamide part under applied at elevated temperature environment, hardly make elongation at break Reduce and higher level can be maintained.The lubricant composition of the present invention is suitable for using resins such as polyamides Used in the sliding part of the various components of machine of composition automobile, machinery, the electric/electronic device of material etc..Specifically, exist In automobile, electric radiator fan motor, fan coupler, Electronic Control EGR, Electronic Control choke valve, exchange hair can be enumerated Rolling bearing, sliding bearing or the gear part of the requirement lubricity of the auto parts machineries such as motor, driven steering device, cam Portion.

Claims (3)

1. a kind of polyamide part lubricant composition, it is in the polyamide with the sliding part slided with miscellaneous part The surface of at least described sliding part of resin component is supplied to use as lubricant,
The polyamide part lubricant composition is characterised by,
Containing base oil and thickener, the base oil is synthetic hydrocarbon oil, and the thickener is in barium compound soap and lithium compound soap At least one metal complex soaps, kinematic viscosity of the base oil at 40 DEG C is 30~200mm2/ s scope, the increasing Thick dose of dropping point is more than 270 DEG C.
2. polyamide part lubricant composition according to claim 1, it is characterised in that
The base oil is the single oil or the miscella of the poly-alpha-olefin and ethene-alpha-olefin copolymer of poly-alpha-olefin.
3. polyamide part lubricant composition according to claim 1 or 2, it is characterised in that
The miscellaneous part is metal parts.
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