Complex calcium base grease and preparation method thereof
A complex calcium-based grease technology, applied in the field of grease, can solve the problems of complex production raw materials and processes, hardening of complex calcium-based grease, limited degree of hardening improvement, etc., to achieve excellent anti-wear performance, excellent anti-friction performance, The effect of no exhaust emissions
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Embodiment 1
[0183]
[0184] Under nitrogen protective atmosphere, in a 500ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, 34.47 g (90 mmol) of N-hydrogenated tallow dipropylene triamine and 13.5 g (450 mmol) of more than 13.5 g (450 mmol) were added. Polyoxymethylene, 10.16 g (85 mmol) of benzotriazole and 100 mL of toluene were rapidly stirred, heated to 100 °C, 48.4 g (200 mmol) of di-n-butyldithiophosphoric acid were added dropwise, and the reaction was performed at a constant temperature for 6 h. After the reaction was completed, the solvent and residual water were removed by distillation under reduced pressure, cooled to room temperature, settled for 24 hours, filtered to remove impurities, and separated by column chromatography to obtain the final product, which was marked as M-1.
[0185] The product characterization data are as follows:
[0186] 1H NMR (300MHz, CDCl3): δ 0.88(3H), 1.03(12H), 1.06-1.91(53H), 2.34-3.46(10H), 3.54-4....
Embodiment 2
[0193]
[0194] Under nitrogen protective atmosphere, in a 500ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, 34.47 g (90 mmol) of N-hydrogenated tallow dipropylene triamine and 13.5 g (450 mmol) of more than 13.5 g (450 mmol) were added. Polyoxymethylene, 17.93 g (150 mmol) of benzotriazole and 120 mL of toluene were rapidly stirred, heated to 100° C., 24.2 g (100 mmol) of di-n-butyldithiophosphoric acid were added dropwise, and the reaction was performed at a constant temperature for 8 h. After the completion of the reaction, the solvent and residual water were removed by distillation under reduced pressure, cooled to room temperature, settled for 24 hours, filtered to remove impurities, and separated by column chromatography to obtain the final product, which was marked as M-2.
[0195] The product characterization data are as follows:
[0196] 1H NMR (300MHz, CDCl3): δ0.88(3H), 1.03-1.95(51H), 2.45-3.30(9H), 3.54-4.32(7H),...
Embodiment 3
[0203]
[0204] Under nitrogen protective atmosphere, in a 500ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a water separator, 34.47 g (90 mmol) of N-hydrogenated tallow dipropylene triamine and 13.5 g (450 mmol) of more than 13.5 g (450 mmol) were added. Polyoxymethylene, 10.16 g (85 mmol) of benzotriazole and 100 mL of toluene were rapidly stirred, heated to 100° C., 48.4 g (200 mmol) of di-n-butyldithiophosphoric acid were added dropwise, and the reaction was performed at a constant temperature for 6 h. After the completion of the reaction, the solvent and residual water were removed by distillation under reduced pressure, cooled to room temperature, settled for 24 hours, filtered to remove impurities, and separated by column chromatography to obtain the final product, which was marked as M-3.
[0205] The product characterization data are as follows:
[0206] 1H NMR (300MHz, CDCl3): δ 0.88(3H), 1.03(12H), 1.06-1.91(53H), 2.34-3.46(10H), 3....
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