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Lubricating oil composition

A lubricating oil composition and composition technology, applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems of low thickening ability, low shear stability, and poor viscosifying effect

Active Publication Date: 2014-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a poor viscosity-increasing effect, and cannot combine high viscosity index, thickening properties at low dosages, and low-temperature fluidity in a single polymer, and has low thickening ability and shear stability at low dosages. question

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 56 g of toluene, 0.1 g of isobutanol and 0.42 g of boron trifluoride etherate were placed in a 500 ml glass flask equipped with a U-shaped tube, dropping funnel, spherical condenser, thermometer and stirrer. A mixture of 60 g of vinyl ethyl ether and 80 g of vinyl isobutyl ether was put into the dropping funnel and added dropwise to the flask over 2 h. The reaction started during the dropwise addition, and the temperature of the reaction solution rose. The temperature of the reaction solution was kept at about 25°C by cooling with an ice-water bath. After the dropwise addition was complete, the reaction solution was stirred for another 30 min. Then, the reaction mixture was transferred to a washing vessel and washed three times with 500 ml of aqueous sodium hydroxide solution (6%) and then with water to render the mixture neutral. The solvent and residual starting material were removed under vacuum to obtain the polymer product. 1.4 g of amorphous nickel catalyst and...

Embodiment 2

[0065] 48 g of isooctane, 0.3 g of isobutanol and 1.2 g of boron trifluoride etherate were charged into a 500 ml glass flask equipped with a U-shaped tube, dropping funnel, spherical condenser, thermometer and stirrer. A mixture of 140 g of vinyl ethyl ether and 20 g of vinyl isobutyl ether was put into the dropping funnel and added dropwise to the flask over 2 h. The reaction started during the dropwise addition, and the temperature of the reaction solution rose. The temperature of the reaction solution was kept at about 35°C by cooling with an ice-water bath. After the dropwise addition was complete, the reaction solution was stirred for another 30 min. Then, the reaction mixture was transferred to a washing vessel and washed three times with 500 ml of aqueous sodium hydroxide solution (6%) and then with water to render the mixture neutral. The solvent and residual starting material were removed under vacuum to obtain the polymer product. 2.8g of amorphous nickel catalyst...

Embodiment 3

[0067] 81 g of isooctane, 0.05 g of ethanol and 0.8 g of aluminum trichloride were placed in a 500 ml glass flask equipped with a U-shaped tube, dropping funnel, spherical condenser, thermometer and stirrer. A mixture of 10 g of vinyl ethyl ether and 150 g of vinyl isohexyl ether was put into the dropping funnel and added dropwise to the flask over 2 h. The reaction started during the dropwise addition, and the temperature of the reaction solution rose. The temperature of the reaction solution was kept at about 40°C by cooling with an ice-water bath. After the dropwise addition was complete, the reaction solution was stirred for another 30 min. Then, the reaction mixture was transferred to a washing vessel and washed three times with 500 ml of aqueous sodium hydroxide solution (6%) and then with water to render the mixture neutral. The solvent and residual starting material were removed under vacuum to obtain the polymer product. 2.1g of Raney nickel catalyst and 70g of pol...

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Abstract

The present invention provides a lubricating oil composition, which comprises 1-15% by mass of a viscosity index improver, zinc dialkyl dithio phosphate, and a main amount of a lubricating base oil, wherein the viscosity index improver is prepared by carrying out a polymerization reaction and a hydrogenolysis reaction on straight chain alkyl vinyl ether and branched-chain alkyl vinyl ether, and the phosphorus element content in the zinc dialkyl dithio phosphate is 0.01-0.07% of the mass of the composition. According to the present invention, the lubricating oil composition has characteristics of excellent low temperature property, excellent viscosity-temperature property, excellent shear stability and excellent wear resistance; and the sulfur content in the composition does not exceed 0.4% by mass, the sulfate ash content in the composition does not exceed 1% by mass, and the phosphorus content does not exceed 0.08% by mass.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a gasoline engine oil composition. Background technique [0002] In recent years, the soaring global oil price and the increasing scarcity of oil resources have put forward more and more stringent requirements on the fuel economy of automobiles. At the same time, the fuel economy evaluation standards of engine lubricating oils have gradually become stricter. The specifications, grades and performance of gasoline engine oil continue to develop with the design, operating conditions and energy saving of gasoline engines, and vehicle lubricants are frequently upgraded. Gasoline engine oil product specifications are gradually upgraded from SJ / GF-2 to SL / GF-3, SM / GF-4 and SN / GF-5, which also puts forward higher requirements for lubricating oil additives. With the continuous upgrading of gasoline engine oil, the requirements for energy saving and low temperature performance of oil produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M145/04C10N30/04C10N30/06C10N30/02
Inventor 谢欣陈晓伟武志强梁宇翔王立华周红英
Owner CHINA PETROLEUM & CHEM CORP
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