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Automatic transmission fluid composition and automatic transmission fluid

A technology of automatic transmission fluid and composition, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problem of mineral oil pour point, oxidation stability, low-temperature viscosity, viscosity-temperature characteristics that cannot fully meet the requirements of automatic transmission fluid, synthetic base oil Complicated preparation process, high price of automatic transmission fluid, etc., to achieve excellent low-temperature flow performance, excellent viscosity-temperature characteristics, and low production cost

Inactive Publication Date: 2017-07-11
JIANGSU OXIRANCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mineral oil is used as the base oil, and the cost is low, but in special environments such as extreme low temperature, large operating temperature changes, and high load, the properties of mineral oil such as pour point, oxidation stability, low-temperature viscosity, and viscosity-temperature characteristics cannot fully meet the requirements. Automatic transmission fluid requirements
Synthetic base oils mainly include three major synthetic base oils: polyalphaolefin (PAO), synthetic ester, and polyether (PAG). The performance is superior to that of mineral base oils. However, due to the complex preparation process and high cost of synthetic base oils, the formulated Automatic transmission fluid is relatively expensive

Method used

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  • Automatic transmission fluid composition and automatic transmission fluid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of polyethylene

[0046] Ethylene homopolymerization uses a 200mL stainless steel high-pressure polymerization kettle equipped with a mechanical stirring paddle and a temperature control device, vacuumizes and replaces nitrogen three times, then vacuumizes, introduces ethylene gas, and adds TaCl under ethylene atmosphere 5 (108mg, 0.30mmol), promoter EtAlCl 2 0.3mL (1mol / L) of hexane solution, selectivity improver AlCl 3 (3.0mmol) and solvent chlorobenzene 10ml. Heat to 60°C, continuously add ethylene at a pressure of 4 MPa, and switch the ethylene atmosphere to hydrogen after stirring at 60°C for 8 hours. After the reactant is completely hydrogenated, the autoclave is evacuated to normal pressure, and a small amount of ethanol is added to deactivate the catalyst. After the reaction solution was concentrated, it was passed through a short column of silica gel to obtain 6.3 g of oily hyperbranched polyethylene. The weight average molecular weight of the oi...

Embodiment 2

[0050] Preparation of polyethylene

[0051] Ethylene homopolymerization uses a 200mL stainless steel high-pressure polymerization kettle equipped with a mechanical stirring paddle and a temperature control device, vacuumizes and replaces nitrogen three times, then vacuumizes, introduces ethylene gas, and adds TaCl under ethylene atmosphere 5 (108mg, 0.30mmol), promoter EtAlCl 2 0.45mL (1mol / L) of hexane solution, selectivity improver AlCl 3 (3.0mmol) and solvent chlorobenzene 10ml. Heat to 60°C, continuously add ethylene at a pressure of 4 MPa, and switch the ethylene atmosphere to hydrogen after stirring at 60°C for 8 hours. After the reactant is completely hydrogenated, the autoclave is evacuated to normal pressure, and a small amount of ethanol is added to deactivate the catalyst. The reaction solution was concentrated and passed through a short column of silica gel to obtain 8.3 g of oily hyperbranched polyethylene. The weight average molecular weight of the oily hyperb...

Embodiment 3

[0055] Preparation of polyethylene

[0056] Ethylene homopolymerization uses a 200mL stainless steel high-pressure polymerization kettle equipped with a mechanical stirring paddle and a temperature control device, vacuumizes and replaces nitrogen three times, then vacuumizes, introduces ethylene gas, and adds TaCl under ethylene atmosphere 5 (144mg, 0.40mmol), promoter EtAlCl 2 0.45mL (1mol / L) of hexane solution, selectivity improver AlCl 3 (3.0mmol) and solvent chlorobenzene 10ml. Heat to 60°C, continuously add ethylene at a pressure of 6 MPa, and switch the ethylene atmosphere to hydrogen after stirring at 60°C for 8 hours. After the reactant is completely hydrogenated, the autoclave is evacuated to normal pressure, and a small amount of ethanol is added to deactivate the catalyst. The reaction solution was concentrated and passed through a short column of silica gel to obtain 8.1 g of oily hyperbranched polyethylene. The weight-average molecular weight of the oily hyperb...

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Abstract

The invention provides an automatic transmission fluid composition and an automatic transmission fluid. The automatic transmission fluid composition comprises polyethylene and an additive, wherein the weight average molecular weight of polyethylene is 200-1000, and the degree of branching is 0.1-0.5. The automatic transmission fluid prepared by the automatic transmission fluid composition has the advantages of excellent viscosity temperature characteristics and low temperature flow performance, good abrasion resistance, and excellent comprehensive performance; and the preparation method is simple, the production cost is low, and the automatic transmission fluid meets the requirements of a Dexron-VI specification on an automatic transmission fluid.

Description

technical field [0001] The invention relates to an automatic transmission fluid, in particular to an automatic transmission fluid with excellent viscosity-temperature characteristics and low-temperature fluidity and a composition thereof. Background technique [0002] Automobile automatic transmission fluid (ATF, Automatic Transmission Fluid) is a multi-functional, multi-purpose fluid. It is mainly used in the automatic transmission system of cars and light trucks, but also in the transmission case of large load vehicles, power steering system, and transfer case of agricultural machinery. In the transmission process, as an intermediate medium, it mainly plays the role of lubrication, heat dissipation, friction protection and so on. [0003] For the automatic transmission device, the structure of the gearbox is relatively complicated. If it is to be used freely and in good condition for a long time, the performance requirements of the automatic transmission fluid are also ve...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/08C10N40/04C10N30/06C10N20/02
CPCC10M169/048C10M2203/06C10M2205/0225C10M2207/026C10M2207/12C10M2209/08C10M2217/06C10M2219/046C10M2219/082C10M2223/045C10N2030/06C10N2030/08C10N2040/042C10N2020/02C10N2010/04
Inventor 朱建民刘兆滨董振鹏顾晓华张玉慧
Owner JIANGSU OXIRANCHEM CO LTD
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