Lubricating oil composition for gasoline engine and manufacturing method thereof
A lubricating oil composition, gasoline engine technology, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of insufficient attention to anti-rust performance, affecting the performance of the engine working conditions, shortening the engine life of the engine, etc.
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Embodiment 1
[0273] In a 500ml four-neck flask equipped with a stirrer, thermometer, condenser and dropping funnel, add 58.79g (0.323mol) of 2-tert-butyl-6-mercaptophenol, 6.88g (0.048mol) of boron trifluoride Ethyl ether (catalyst for alkylation reaction), 100ml of n-hexane solvent and 161.61g (0.162mol) of polyisobutene (Mn=1000, manufactured by Jihua Group Fine Chemicals Co., Ltd.) were reacted at 80°C for 2h. After the reaction, the reaction mixture was washed once with 5% potassium hydroxide solution by mass fraction, and washed to neutrality with hot water to remove the catalyst, and then the solvent and unreacted phenol were distilled off under reduced pressure to obtain polyisobutylene mercaptophenol, hydroxyl The value was 53.49 mgKOH / g. For the determination of hydroxyl value, refer to the acetic anhydride method in GB / T7383-2007.
[0274] An example reaction is as follows:
[0275]
[0276]From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercaptophe...
Embodiment 2
[0278]
[0279] Under nitrogen protection atmosphere, in the 250ml four-necked flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, add 30.58 grams (156mmol) 2-mercapto-4-methyl-6-methylphenol, 15.79 grams ( 112mmol) 1,4-dichloro-2-methylbutane, 32.38g (176mmol) N-phenyl-p-phenylenediamine, 3.45g (25mmol) potassium carbonate and 100mL toluene, stirred rapidly, and reacted at 90°C for 1h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and separated by column chromatography to obtain the final masked phenol product.
[0280] Product characterization data are as follows:
[0281] 1 H NMR (300MHz, CDCl 3 ): δ1.00(3H), 1.31(1H), 1.40(9H), 1.78(1H), 1.98(1H), 2.37(3H), 2.99(2H), 3.33(2H), 4.83(1H), 6.95 -7.26(12H), 7.55(1H);
[0282] 13 C NMR (75MHz, CDCl 3 ): δ20.4, 21.2, 30.1, 33.7, 34.5, 43.8, 114.3, 118.9, 119.4, 121.8, 125.8, 129.5, 132.3, 133.5, 146.1, 149....
Embodiment 3
[0285]
[0286] Under nitrogen protection atmosphere, in the 250ml four-necked flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, add 31.65 grams (133mmol) 2,6-di-tert-butyl-4-mercaptophenol, 11.66 grams (62mmol ) dibromoethane, 28.15 grams (153 mmol) of N-phenyl-p-phenylenediamine, 0.79 grams (7.5 mmol) of sodium carbonate and 100 mL of benzene, stirred rapidly, and reacted at 25 ° C for 24 h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and separated by column chromatography to obtain the final masked phenol product.
[0287] Product characterization data are as follows:
[0288] 1 H NMR (300MHz, CDCl 3 ): δ1.36(18H), 3.15(2H), 3.63(2H), 5.17(1H), 5.32(1H), 6.97-7.26(11H), 7.55(1H);
[0289] 13 C NMR (75MHz, CDCl 3 ): δ29.6, 32.7, 34.6, 47.5, 114.3, 118.9, 119.4, 121.8, 126.2, 127.5, 129.5, 132.3, 136.5, 146.1, 149.0, 153.5;
[0290] C 28 h 36 N 2 ...
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