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Lube base oil, lubricating oil composition for internal combustion engine, and lubricating oil composition for drive transmission device

The technology of a lubricating oil base oil and a lubricating oil composition is applied in the field of lubricating oil base oils, which can solve the problems of lubricity (abrasion resistance, heat resistance, adhesion, fatigue life reduction, great influence of viscosity, bad influence of transmission, etc.), To achieve the effect of improving low temperature startability, improving low temperature start, balancing good low temperature viscosity characteristics and anti-volatility

Inactive Publication Date: 2012-12-19
NIPPON OIL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since lowering the viscosity of the lubricating oil is accompanied by a decrease in lubricating properties (wear resistance, anti-seizure resistance (seizure resistance), fatigue life, etc.), it may have adverse effects on transmissions and the like.
In addition, adding a phosphorus-based extreme pressure agent to ensure the wear resistance of low-viscosity lubricating oil will significantly reduce the fatigue life
In addition, although sulfur-based extreme pressure agents are effective in improving fatigue life, it is well known that in low-viscosity lubricating oil base oils, the influence of lubricating oil base oil on viscosity is greater than that of additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] Preferable examples of the production method of the lubricating base oil of the present invention include the production method A shown below.

[0044] That is, the preparation method A of the present invention has the following steps: Step 1: Prepare a carrier, which is subjected to NH 3 NH at 300-800°C in the evaluation of desorption temperature dependence 3 Desorption amount relative to NH 3 In terms of the total desorption amount, the percentage is below 80%, so that at least one of the Group VIa metals of the periodic table and at least one of the Group VIII metals of the periodic table are supported on the carrier, thereby obtaining a hydrocracking catalyst; Step 2: In the presence of a hydrocracking catalyst, the raw material oil containing more than 50% by volume of slack paraffin is heated at a hydrogen partial pressure of 0.1-14MPa, an average reaction temperature of 230-430°C, and an LHSV of 0.3-3.0hr -1 1. Hydrocracking is carried out under the condition o...

Embodiment 1～3

[0392] [Examples 1 to 3] The fraction separated by vacuum distillation in the refining process of solvent refining base oil was subjected to solvent extraction with furfural, followed by hydrogenation treatment, and then solvent dewaxing with methyl ethyl ketone-toluene mixed solvent. The slack wax removed during the solvent dewaxing was further deoiled, and the obtained wax component (hereinafter referred to as "WAX1") was used as a raw material of lubricating oil base oil. The traits of WAX1 are shown in Table 1.

[0393] The name of the raw material wax

WAX1

Kinematic viscosity at 100°C (mm 2 / s)

6.3

Melting point (°C)

53

Oil (mass%)

19.9

Sulfur content (mass ppm)

1900

[0394] Then, in the presence of a hydrocracking catalyst, at a hydrogen partial pressure of 5MPa, an average reaction temperature of 350°C, and a LHSV of 1hr -1 Under the conditions of WAX1 hydrocracking. As a hydrocracking catalyst...

Embodiment 10、11

[0404] [Examples 10, 11, Comparative Examples 10-16] In Examples 10 and 11, the base oil D4 in Example 4 and the base oils and additives shown below were used to prepare lubricants for internal combustion engines having the compositions shown in Table 8. oil composition. In addition, in Comparative Examples 10 to 13, lubricating oil compositions for internal combustion engines having the compositions shown in Table 9 were prepared using the base oils and additives shown below. In addition, in Comparative Examples 14 to 16, lubricating oil compositions for internal combustion engines having the compositions shown in Table 10 were prepared using the base oil 1 and the additives shown below. Tables 3-5 show the sulfur content, phosphorus content, kinematic viscosity at 100° C., base value, and acid value of the lubricating oil compositions obtained. (Base oil) R10: Paraffinic hydrocracked base oil (saturated components: 94.8% by mass, ratio of cyclic saturated components contain...

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Abstract

A lube base oil satisfying at least one of the following requirements (a) and (b). A lubricating oil composition for internal combustion engines is provided which comprises the lube base oil, an ash-free antioxidant containing no sulfur as a constituent element, and at least one member selected among ash-free antioxidants containing sulfur as a constituent element and organ omolybdenum compounds. Also provided is a lubricating oil composition for drive transmission devices which comprises the lube base oil, a poly(meth)acrylate-type viscosity index modifier, and a phosphorus compound. (a) The content of saturated matters is 90 mass% or higher and the proportion of cyclic saturated matters in those saturated matters is 10-40 mass%. (b) The lube base oil satisfies the relationship represented by the following expression (1). 1.440=n20-0.002OEv100=1.453 (1) [In the expression, n20 indicates the refractive index at 20 DEG C of the lube base oil and kv100 indicates the dynamic viscosity (mm2 / s) at 100 DEG C of the lube base oil].

Description

technical field [0001] The present invention relates to a lubricating oil base oil, a lubricating oil composition for an internal combustion engine, and a lubricating oil composition for a transmission. Background technique [0002] Conventionally, in the field of lubricating oils, attempts have been made to improve the viscosity-temperature characteristics and thermal / oxidative stability of lubricating oils by adding various additives to lubricating base oils such as highly refined mineral oils (for example, refer to Patent Documents 1-8). [0003] For example, lubricating oils used for internal combustion engines such as automobile engines require thermal and oxidation stability that can be used for a long period of time under severe conditions. Therefore, in conventional lubricating oils for internal combustion engines, in order to ensure thermal and oxidation stability, highly refined base oils such as hydrocracked mineral oils or high-performance base oils such as synt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M171/00C10M101/02C10N40/25C10N40/04C10N30/10C10N30/08C10N30/06C10N30/02C10N30/00C10N20/02C10N20/00
Inventor 白滨真一田口昌广田川一生佐野孝小西正三郎松井茂树黑泽修
Owner NIPPON OIL CO LTD
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