Gear oil composition, gear oil, and preparation method of gear oil
A technology of composition and gear oil, which is applied in the field of lubricating oil, can solve the problems of low quality of polyalphaolefin base oil, failure to meet high-end lubricating oil products, low purity of alpha-olefin, etc., and achieve good comprehensive performance and good shear The effect of stability and simple preparation method
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Embodiment 1
[0039] Preparation of Highly Branched Polyethylene
[0040] Add TaCl to the 125mL glass autoclave lining equipped with a PTFE magnetic stirring rod 5 (72mg, 0.20mmol), co-catalyst EtAlCl 2 Hexane solution 0.2mL (1mol / L), selectivity improver AlCl 3 (2.0mmol) and 10ml of solvent chlorobenzene. Replace the atmosphere of the autoclave with nitrogen three times and vacuum once, heat to 45°C, continue to add ethylene at a pressure of 10MPa, stir at 45°C for 12h, then switch the ethylene atmosphere to hydrogen directly, and react under a hydrogen atmosphere until the hydrogenation is complete , Vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. 40ml of chloroform was added to dilute the reaction product, the product was filtered and passed through a neutral alumina column or silica gel column to remove catalyst residue, and the solvent and ethylene oligomer were distilled off at room temperature under vacuum to obtain 4.1 g of oily hyp...
Embodiment 2
[0044] Preparation of Highly Branched Polyethylene
[0045] Add TaCl to the 125mL glass autoclave lining equipped with a PTFE magnetic stirring rod 5 (72mg, 0.20mmol), co-catalyst EtAlCl 2 The hexane solution 0.2mL (1mol / L) and the solvent chlorobenzene 10ml. Replace the atmosphere of the autoclave with nitrogen three times, and vacuum once, heat to 30°C, continue to add ethylene at a pressure of 10MPa, stir at 30°C for 16h, then switch the ethylene atmosphere to hydrogen directly, and react under a hydrogen atmosphere until the hydrogenation is complete , Vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. 40ml of chloroform was added to dilute the reaction product, the product was filtered and passed through a neutral alumina column or silica gel column to remove the catalyst residue, and the solvent and ethylene oligomer were distilled off under vacuum at room temperature to obtain 2.7 g of oily hyperbranched polyethylene. The...
Embodiment 3
[0049] Preparation of Highly Branched Polyethylene
[0050] Add TaCl to the 125mL glass autoclave lining equipped with a PTFE magnetic stirring rod 5 (72mg, 0.20mmol), cocatalyst Et 3 Al 2 Cl 3 0.1mL (1mol / L) of hexane solution and 10ml of solvent chlorobenzene. Replace the atmosphere of the autoclave with nitrogen three times and vacuum once, heat to 35°C, continue to add ethylene at a pressure of 12MPa, stir at 35°C for 10h, then switch the ethylene atmosphere to hydrogen directly, and react under a hydrogen atmosphere until the hydrogenation is complete , Vent the autoclave to normal pressure, and add a small amount of methanol to deactivate the catalyst. 40ml of chloroform was added to dilute the reaction product, the product was filtered and passed through a neutral alumina column or silica gel column to remove catalyst residue, and the solvent and ethylene oligomer were distilled off under vacuum at room temperature to obtain 3.2 g of oily hyperbranched polyethylene. The o...
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