Lubricating oil pour point depressant formed by copolymerization of soybean oil and acrylate and preparation method of pour point depressant
A technology of acrylates and methyl methacrylates, which is used in the field of lubricating oil pour point depressants copolymerized with soybean oil and acrylates and its preparation, which can solve the problems of poor thermal stability and oxidation stability, poor low temperature performance, and polymerization activity. Low-level problems, to achieve the effect of broad application prospects, strong tolerance, simple and feasible methods
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Embodiment 1
[0048] The method for preparing lubricating oil pour point depressant with soybean oil and acrylates copolymerization comprises the following steps:
[0049] At room temperature, take 2g of methyl methacrylate, the amount of soybean oil is 2% of the mass of methyl methacrylate, that is, 0.04g, 1.7×10 -5mol catalyst, 5mL toluene in a dry polymerization reaction tube; place the reaction tube on a Schlank device, perform anhydrous and oxygen-free operation, vacuumize for 3 minutes, fill with nitrogen for 6 minutes, repeat twice, and finally place in a constant temperature oil bath In the pot, heat and stir at 50°C for 30 minutes to obtain a uniform solution; then connect it to the Schlank device again, pump vacuum for 3 minutes, fill with nitrogen for 6 minutes, and inject the toluene solution of azobisisobutyronitrile in the nitrogen atmosphere, in which the peroxide The amount of benzoyl is 2% of the mass of the monomer (methyl methacrylate, soybean oil), which is 0.0408g. Diss...
Embodiment 2
[0054] At room temperature, take 5g of methyl methacrylate, the amount of soybean oil is 10% of the mass of methyl methacrylate, which is 0.05g, 2.5×10 -5 mol catalyst, 6mL toluene in a dry reaction tube, and place the reaction tube on the Schlank device for anhydrous and oxygen-free operation, vacuumize for 5 minutes, fill with nitrogen for 8 minutes, repeat twice, and finally place it in an oil bath , heated and stirred at 50°C for 30 minutes to obtain a uniform solution; then connected to the Schlank device again, vacuumed for 5 minutes, filled with nitrogen for 8 minutes, and then injected a toluene solution of benzoyl peroxide in a nitrogen atmosphere, in which azobisiso The amount of butyronitrile is 0.1% of the mass of the monomer (methyl methacrylate, soybean oil), which is 0.00505g. Dissolve it in 4mL of toluene; set the temperature of the oil bath to 90°C and react for 8h; after the reaction , Pour the solution in the reaction tube into a beaker filled with 50mL of m...
Embodiment 3
[0056] At room temperature, take 3g of methyl methacrylate, the amount of soybean oil is 40% of the mass of methyl methacrylate, which is 1.2g, 1.0×10 -6 mol catalyst, 7mL toluene in a dry reaction tube, and place the reaction tube on the Schlank device for anhydrous and oxygen-free operation, vacuumize for 4 minutes, fill with nitrogen for 7 minutes, repeat twice, and finally place in the oil bath , heated and stirred at 50°C for 30 minutes to obtain a homogeneous solution; then connected to the Schlank device again, evacuated for 4 minutes, filled with nitrogen for 7 minutes, and injected the toluene solution of benzoyl peroxide in the nitrogen atmosphere, in which azobisisobutyl The amount of nitrile is 0.04% of the mass of the monomer (methyl methacrylate, soybean oil), which is 0.00168g, which is dissolved in 3mL of toluene; the temperature of the oil bath is set at 110°C, and the reaction is carried out for 4h; after the reaction is completed, Pour the solution in the re...
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