Additive for lubricant
A technology of additives and lubricants, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of inability to meet extreme pressure, wear resistance and friction characteristics, and achieve excellent anti-wear performance and high-temperature purification performance, Excellent long-term lubrication performance
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Embodiment 1
[0111] Under nitrogen flow, 13.2 g (0.55 mol) of sodium hydride and 100 ml of xylene were added to a 500 ml flask, and a solution of 95.2 g (0.5 mol) of octylthioethanol in 100 ml of xylene was added dropwise while stirring. The reaction was carried out for 5 hours while refluxing.
[0112] On the other hand, in a 1000 ml flask, 38.3 g (0.25 mol) of phosphorus oxychloride and 100 ml of THF were added under nitrogen flow while cooling with ice water. The reaction mixture was added dropwise over 2 hours, followed by reaction at room temperature for 1 hour.
[0113] 10 g (0.55 mol) of water was dropped into the reaction solution, and after stirring at room temperature for 1 hour, 100 ml of water was added, followed by stirring at room temperature for 1 hour. After standing still, the organic layer and the aqueous layer were separated, and 100 ml of water was added to the organic layer, followed by stirring at room temperature. This operation was repeated 2 times. Xylene and TH...
Embodiment 2
[0115] 45 g of octylthioethyl phosphate obtained in Example 1, 50 ml of toluene, and 1 g of water were added to a 300 ml flask, and the temperature was raised to 70°C. 4.1 g (0.05 mol) of zinc oxide was added. The reaction was carried out at 70° C. for 3 hours. After distilling off toluene and water under reduced pressure, it was diluted with 15 g of mineral oil equivalent to 150N, and the reaction product was filtered. The yield of the obtained reaction product was 60 g.
Embodiment 3
[0117] Except that 123.3 g (0.5 mol) of dodecylthioethanol was used instead of octylthioethanol in Example 1, all the other operations were the same as in Example 1. The yield of the obtained reaction product (dodecylthioethyl phosphate) was 92 g.
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