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Lubricating oil base oil composition

A lubricating oil base oil and composition technology, which is applied in the direction of lubricating composition, base material, petroleum industry, etc., can solve the problems that cannot meet the requirements of lubricating oil viscosity index and volatility specifications, and achieve the effect of increasing value and reducing cost

Active Publication Date: 2012-10-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned patents believe that the 100°C viscosity of traditional petroleum raw materials is less than 3mm 2 / s base oils are not suitable for blending with higher viscosity base oils, because the blended base oils cannot meet the viscosity index and volatility specifications of lubricating oils

Method used

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  • Lubricating oil base oil composition
  • Lubricating oil base oil composition

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030]Take equal quality low viscosity hydrogenated base oil and Group I base oil 650SN. First add 650SN into a blending kettle with a stirring device, then add low-viscosity hydrogenated base oil, stir at 25°C for 40 minutes, and filter to obtain a blended base oil composition. The mass percentage of each component is shown in Table 1. The physical and chemical properties are shown in Table 2. Among them, the determination method of shear stability is SH / T0103, and the determination method of Noack evaporation mass loss is SH / T0731.

[0031] The 100°C viscosity of the low viscosity hydrogenated base oil used is 2.535mm 2 / s, viscosity at 40°C is 9.73mm 2 / s, viscosity index 81, pour point -45°C, open flash point 165°C, Noack evaporation mass loss (250°C, 1h) 79.5%, paraffin content in composition 37.60 mass%, total naphthene content 62.35 mass%, aromatics The sulfur content is 0.03% by mass, and the sulfur content is 0.02% by mass.

[0032] The 100°C viscosity of 650SN ba...

example 2

[0034] Take low-viscosity hydrogenated base oil, No. 4 hydrogenated base oil and bright stock 150BS and prepare them according to the mass ratio of 38:50:12. First add No. 4 hydrogenated base oil and 150BS into the blending kettle with stirring device, then add low-viscosity hydrogenated base oil, stir for 60 minutes at 20°C, and filter to obtain the blended base oil composition. The mass of each component The percentage content is shown in Table 1, and the physical and chemical properties are shown in Table 2.

[0035] The 100°C viscosity of the low-viscosity hydrogenated base oil used is 1.879mm 2 / s, viscosity at 40°C is 7.84mm 2 / s, pour point -51°C, open flash point 154°C, Noack evaporation mass loss (250°C, 1h) 87.9%, paraffin content in composition 36.81% by mass, total naphthene content 63.19% by mass.

[0036] The 100°C viscosity of No. 4 hydrogenated base oil is 4.350mm 2 / s, viscosity at 40°C is 21.41, viscosity index is 102, pour point -24°C, open flash point 21...

example 3

[0039] Prepare low viscosity hydrogenated base oil, No. 8 hydrogenated base oil, bright stock 150BS and polyisobutylene viscosity index improver L3 in a mass ratio of 45:40:10:5. First add No. 8 hydrogenated base oil and 150BS into the blending kettle with a stirring device, then add low-viscosity hydrogenated base oil, stir at 40°C for 30 minutes, then add L3, heat up to 60°C and stir for 30 minutes, filter to obtain the blended The combined base oil composition is shown in Table 1 for the mass percentage of each component, and shown in Table 2 for its physical and chemical properties.

[0040] The 100°C viscosity of the low viscosity hydrogenated base oil used is 2.324mm 2 / s, viscosity at 40°C is 8.52mm 2 / s, viscosity index 79, pour point -48°C, open flash point 159°C, Noack evaporation mass loss (250°C, 1h) 82.6%, paraffin content in composition 36.99%, total naphthene content 62.98%, aromatic content 0.03 %.

[0041] The 100°C viscosity of No. 8 hydrogenated base oil ...

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Abstract

The invention relates to lubricating oil base oil composition. The lubricating oil base oil composition comprises 10 to 80 mass percent of low-viscosity hydrogenated base oil and 20 to 90 mass percent of lubricating oil base oil, wherein the viscosity of the low-viscosity hydrogenated base oil at the temperature of 100 DEG C is 1.5 to 3.0 mm<2> / s; the low-viscosity hydrogenated base oil comprises less than 40 mass percent of alkane, more than 60 mass percent of total cycloalkane, less than 0.2 mass percent of arene and less than 0.05 mass percent of sulfur; the lubricating oil base oil is selected from one of or composition of any two or more of I type, II type, III type, IV type, V type and bright oil. The base oil composition is the high-quality lubricating oil base oil with the technical indexes such as viscosity index, volatility and the like meeting the requirement of the lubricating oil specification, and is applicable to the base oil of hydraulic oil, transmission liquid and internal combustion engine oil.

Description

technical field [0001] The invention is lubricating oil base oil, specifically, a lubricating oil base oil composition prepared from different base oils. Background technique [0002] Hydrogenated base oil has the advantages of low content of sulfur, nitrogen and aromatics, good low temperature performance, significantly improved susceptibility to antioxidants, reduced toxicity, good thermal stability and oxidation stability. With the development of lubricating oil towards high quality, lubricating oil base oil is changing from Group I oil specified by API classification standard to Type II / III oil. [0003] In hydrogenated base oil, the kinematic viscosity at 100°C is 1.5-3.0mm 2 The low-viscosity base oil between / s has a small viscosity index, low viscosity, low flash point and high volatility, so its application is greatly limited. Usually used as diluent oil or blended or cracked into lighter products, such as diesel oil and naphtha, etc.; even used as lubricating oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M101/02
Inventor 韩恒文段庆华李勇
Owner CHINA PETROLEUM & CHEM CORP
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