Lubricant composition

A technology for lubricating compositions and phenolic compounds, which are applied in the directions of lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of not prompting long life, insufficient development, etc.

Active Publication Date: 2008-10-01
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no proposal to use amine antioxidants and phenols in combination to achieve long life at high temperatures.
[0010] Therefore, the reality is that in order to improve the oxidation aging resistance of lubricating oils at high temperatures, the development of favorable combinations of aminic antioxidants and phenolic antioxidants has not been sufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、2 and comparative example 1～7

[0065] (1) In a grease preparation kettle, 1 / 2 mass of base oil, 10.2 mass % of 12-hydroxystearic acid and 1.0 mass % of calcium sulfonate were blended in the reaction vessel, and heated and dissolved while stirring.

[0066] (2) 2.7% by mass of lithium hydroxide (monohydrate) was dissolved in water, and 2.1% by mass of terephthalic acid was further dissolved. This aqueous solution was added to the grease composition of (1), followed by heating and mixing. After the temperature of the grease composition reached 205° C., it was held for 5 minutes.

[0067] (3) Next, add the remaining base oil, then cool to 80°C at 50°C / 1 hour, as shown in Table 1, add mixed aralkylated diphenylamine, amine compound 1 or amine compound 2, and phenol Phenolic compound 1, Phenolic compound 2 or Phenolic compound 3.

[0068] (4) Further, after naturally cooling to room temperature, finishing treatment (Shishang げ treatment) was performed using a 3-roller device to obtain 9 kinds of grease composi...

Embodiment 3

[0071](1) Heat and dissolve 1 mole of diphenylmethane-4.4'-diisocyanate (MDI) in 2 / 3 of the mass of the base oil to prepare raw material 1.

[0072] (2) In addition, 2 moles of octylamine were stirred and dissolved in the remaining base oil to prepare raw material 2.

[0073] (3) Next, while stirring raw material 1 vigorously at 50 to 60°C in the grease reactor, slowly add raw material 2. Heating was performed while stirring, and after the temperature of the grease composition reached 165° C., it was maintained for 1 hour.

[0074] (4) Then, aralkylated diphenylamine and phenolic compound 1 were added and mixed, and left to cool naturally to room temperature, followed by finishing treatment using a 3-roller device to obtain the grease composition of Example 3.

[0075] (5) The tests of (2) to (4) above were carried out with respect to the grease composition of Example 3. The results are shown in Table 1.

Embodiment 4

[0077] (1) In a grease preparation kettle, 1 / 2 mass of base oil and 15 mass % of lithium 12-hydroxystearate were blended in a heating kettle, and heated and mixed. After the temperature of the grease composition reached 210° C., it was maintained for 5 minutes.

[0078] (2) Next, after adding the remaining base oil, the mixture was cooled to 80° C. at 50° C. / 1 hour, and aralkylated diphenylamine and phenolic compound 1 were added and mixed.

[0079] (4) Further, after naturally cooling to room temperature, finishing treatment was performed using a 3-roller device to obtain the grease composition of Example 4.

[0080] (5) The tests of (2) to (4) above were carried out with respect to the grease composition of Example 4. The results are shown in Table 1.

[0081] [Table 1]

[0082]

[0083] In addition, for the grease compositions of Examples 1 and 2 and Comparative Examples 3 and 6, the above-mentioned bearing life was measured. The grease composition of Example 1 was 5...

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Abstract

Disclosed is a lubricant composition, particularly a grease composition and a lubricating oil composition which are obtained by blending an aralkylated diphenylamine and a phenol compound having a molecular weight of not less than 340 into a base oil. Such a lubricant composition is hardly decomposed or volatilized even at high temperatures and has a long oxidation life. The lubricating characteristics of this lubricant composition can be maintained for a long time.

Description

technical field [0001] The present invention relates to a lubricating composition, in particular to a high-temperature grease composition used in the lubrication of various mechanical devices or bearings such as automobiles, electrical equipment, construction machinery, and machine tools, and in hydraulic, compression, and vacuum pumps at high temperatures. , bearings, gears and other medium and long-term use of lubricating oil composition. Background technique [0002] Lubricating compositions are widely used in various machinery such as automobiles, electrical equipment, construction machinery, machine tools, etc. However, year after year, the requirements for miniaturization, high output power, light weight, and conservative simplification of machinery have led to increasingly stringent lubricating conditions for lubricating compositions. situation. The miniaturization and higher output power of machinery means that the size and shape become smaller at the same output po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/06C10M169/06C10M115/08C10M117/00C10M129/10C10M129/14C10M129/76C10M133/12C10N20/00C10N20/04C10N30/06C10N30/08C10N30/10C10N40/00C10N40/02C10N40/04C10N40/08C10N50/10
CPCC10M141/06C10M169/06C10M2203/1025C10M2205/0285C10M2207/022C10M2207/026C10M2207/106C10M2207/1285C10M2207/1426C10M2207/283C10M2207/289C10M2215/006C10M2215/064C10M2215/065C10M2215/1026C10M2215/223C10M2219/046C10M2229/041C10N2220/00C10N2220/021C10N2230/00C10N2230/06C10N2230/08C10N2230/10C10N2230/74C10N2240/00C10N2240/02C10N2240/04C10N2240/08C10N2250/10C10N2020/00C10N2020/04C10N2030/00C10N2030/08C10N2030/10C10N2030/74C10N2030/06C10N2040/02C10N2040/00C10N2040/04C10N2040/08C10N2050/10C10N2010/04
Inventor 藤浪行敏上村秀人
Owner IDEMITSU KOSAN CO LTD
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