Lubricant Composition

a technology of lubricant composition and composition, which is applied in the field of lubricant composition, can solve the problems of compound being incapable of satisfying the recently increased demand for stabilizing properties, deteriorating operability at a low temperature, and becoming inferior, and achieve excellent stabilizing properties, excellent rust prevention properties, and excellent stability

Inactive Publication Date: 2010-12-02
NOK KLUEBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0052]The present invention allows for provision of a lubricant composition which is suitable as a fluorine oil, fluorine grease, and the like, and which is excellent in stabilizability (anti-degradation property).
[0053]The present invention further allows for provision of a lubricant composition which is suitable as a fluorine oil, fluorine grease, and the like, and which has an excellent rust prevention property while keeping a heat resistance.BEST MODE(S) FOR CARRYING OUT THE INVENTION
[0054]The embodiments of the present invention will be described hereinafter.
[0055]The lubricant compositions of the present invention each comprise a fluorine-containing diamide compound (additive) represented by the above Formula (I), and a lubricating oil (base oil), in a manner to embrace two kinds of lubricant compositions including one having an excellent stabilizability (anti-degradation property) and the other having an excellent rust prevention property, based on the same Formula (I). Note that both compositions are slightly different from each other, in terms of “n” in Formula (I).
[0057]wherein, Y represents an oxygen atom (O), sulfur atom (S), CO group, SO group, or SO2 group, and preferably represents an oxygen atom (O) or sulfur atom (S).
[0058]k is an integer of 1 to 5, and preferably 1 to 3.

Problems solved by technology

Although this technique improves a heat resistance of the lubricant, its operability is deteriorated at a low temperature.
However, it is an actual circumstance that the compound is becoming incapable of satisfying the recently increased demand for stabilizing property.
Since these compounds each include a fluorine-containing group and a phosphoric acid group configured to form a C—O—P bond such that hydrolysis is caused to become inferior in heat resistance and durability, the compounds are disadvantageous in failing to exhibit a heat resistance which is an intrinsic feature of a fluorine oil / fluorine grease.
However, expensive methanesulfonyl chloride is required to produce these compounds, and specific reaction manipulation and the like are required then such as a reaction under an anhydrous condition, thereby bringing about a problem that scaling-up of the production to industrial dimensions is not easy.
However, such durability is not sufficient yet in view of the demand in the market, and it is necessary to deal with increasingly severer demands in the market.
Further, its solubility in a fluorine oil is low, and thus utilization thereof to a fluorine oil is impossible.
Although carboxyl groups and amide groups certainly form protective films for metals to thereby improve rust prevention capabilities, they are insufficient in thermal stability, so that usage thereof at high temperatures fails to continuously exhibit rust prevention effects.
Although these additives certainly allow for improvement of rust prevention capabilities, the additives are insufficient in usage for fluorine oils and greases to be used at high temperatures, from an aspect of solubilities in fluorine oils and an aspect of heat resistance.
However, the synthesizing process for the compound includes three stages, and thus it is unsuitable for scaling-up to industrial dimensions.
Further, since multiple by-products tend to be caused in the reaction of trichlorotriazine with HOCH2CF2(OCF2)d(OCF2CF2)cOCF2CH2OH for exemplarily obtaining a compound of its Example 8, it is necessary to strictly control the reaction conditions, thereby making it difficult to obtain the targeted substance with a satisfactory yield.

Method used

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  • Lubricant Composition
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0122]10.1 g of 1,4-bis(4-aminophenoxy)benzene was dissolved in a mixed solvent of 100 ml of pyridine and 100 ml of AK-225 (mixture of CF3CF2CHCl2 and CClF2CF3CHClF), followed by slow dropping of 209.0 g of acid fluoride (n=11) at a room temperature, and by stirring overnight under a condition ranging from the room temperature to 40° C.

[0123]50 ml of methanol was added and stirred, followed by subsequent neutralization with a saturated NaHCO3 water solution.

[0124]The reaction product was extracted by AK-225 (mixture of CF3CF2CHCl2 and CClF2CF3CHClF), and washed by a saturated NaCl water solution. The AK-225 was distilledly removed by an evaporator, to obtain a light yellow and highly viscous liquid (C-2).

[0125]With analysis of a chemical structure of C-2 by NMR, it was revealed that it had a structure of Formula (I), and n=11, m=1, and k=3. In view of the starting materials of synthesis, Y is supposed to be 0 (oxygen atom).

[0126]10 g of the obtained light yellow and highly viscous l...

example 2

[0132]10.1 g of 1,4-bis(4-aminophenoxy)benzene was dissolved in a mixed solvent of 100 ml of pyridine and 100 ml of AK-225, followed by slow dropping of 101.0 g of acid fluoride (n=40) at a room temperature, and by stirring overnight under a condition ranging from the room temperature to 40° C.

[0133]50 ml of methanol was added and stirred, followed by subsequent neutralization with a saturated NaHCO3 water solution.

[0134]The reaction product was extracted by AK-225, and washed by a saturated NaCl water solution. The AK-225 was distilledly removed by an evaporator, to obtain a light yellow and highly viscous liquid (C-3).

[0135]With analysis of a chemical structure of C-3 by NMR, it was revealed that it had a structure of Formula (I), and n=40, m=1, and k=3. In view of the starting materials of synthesis, Y is supposed to be 0 (oxygen atom).

[0136]1 g of the obtained light yellow and highly viscous liquid (C-3) was added into 199 g of the base oil (A-1) used in Example 1, followed by s...

example 3

[0138]3 g of bis[4-(aminophenoxy)phenyl]sulfone was dissolved in a mixed solvent of 100 ml of pyridine and 100 ml of AK-225, followed by slow dropping of 209.0 g of acid fluoride (n=11) at a room temperature, and by stirring overnight under a condition ranging from the room temperature to 40° C.

[0139]50 ml of methanol was added and stirred, followed by subsequent neutralization with a saturated NaHCO3 water solution.

[0140]The reaction product was extracted by AK-225, and washed by a saturated NaCl water solution. The AK-225 was distilledly removed by an evaporator, to obtain a light yellow and highly viscous liquid (C-4).

[0141]With analysis of a chemical structure of C-4 by NMR, it was revealed that it had a structure of Formula (I), and n=11, m=2, and k=3. In view of the starting materials of synthesis, Y's are supposed to be an SO2 group and O (oxygen atom).

[0142]6 g of the obtained light yellow and highly viscous liquid (C-4) was added into 194 g of the base oil (A-1) used in Exa...

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Abstract

A lubricant composition which is suitable as a fluorine oil, fluorine grease, and which is excellent in stabilizability, as well as a lubricant composition which is suitable as a fluorine oil, fluorine grease, and which has an excellent rust prevention property while keeping a heat resistance.

Description

TECHNICAL FIELD[0001]The present invention relates to a lubricant composition, and particularly to a lubricant composition which is suitable as a fluorine oil, fluorine grease, and the like, and which is excellent in stabilizability (anti-degradation property).BACKGROUND ART[0002]Fluorine-based lubricants are widely used for lubrication of various machines such as vehicles, electric equipments, construction machines, information equipments, industrial machines, working machines, and parts constituting them. With recently increased speeds, decreased sizes, enhanced performances, and decreased weights of these machines, temperatures of the machines and peripherals thereof tend to be increasingly raised.[0003]Further, lower friction and higher wear resistances are demanded for the lubricants because of exemplary reasons to improve manufacturing efficiencies using the various machines and to prolong maintenance intervals of the machines, and stabilizing properties are demanded for the l...

Claims

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Application Information

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IPC IPC(8): C10M133/16C10M169/02
CPCC10M107/38C10M169/02C10M2201/0416C10M2201/1056C10M2213/026C10M2213/046C10M2213/0613C10M2213/0626C10M2215/08C10M2215/1026C10M2219/04C10N2220/02C10N2220/06C10N2230/08C10N2230/12C10N2240/08C10N2240/204C10N2250/10C10N2020/01C10N2020/079C10N2030/08C10N2030/12C10N2040/08C10N2040/18C10N2050/10
InventorMIYAMOTO, TETSUHIROSHIMURA, AKIHIKONITTA, TOSHIOYURIMOTO, JIRO
OwnerNOK KLUEBER CO LTD