Two-stroke engine lubricating oil composition and preparation method thereof
A lubricating oil composition and engine technology, applied in the field of lubricating oil, can solve the problems of strong steric hindrance effect and low freezing point, and achieve the effects of reducing wear, reducing wear and inhibiting the formation of deposits
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Embodiment 1
[0067] The preparation of embodiment 1 epoxidized cardanol
[0068] Take 100g of cardanol, 8g of formic acid, 0.3g of sulfuric acid, and 200g of hydrogen peroxide, and put them into a three-necked flask equipped with mechanical stirring, reflux condenser and temperature control, start stirring and heating. The reaction temperature was maintained at 70° C. for 3 hours. After the reaction, the temperature was lowered to obtain a brown-red transparent liquid. After the reaction product was filtered, it was washed with 5% KOH solution, and then washed with distilled water until it became neutral. The organic phase was distilled under reduced pressure at 100 Pa and 150 ° C for 1 hour to remove water and unreacted raw materials to obtain an orange-red transparent liquid. , the conversion rate of the product is 96.2%, and the purity of epoxidized cardanol is greater than 98%.
Embodiment 2
[0069] The preparation of embodiment 2 epoxidized cardanol
[0070] Get 100g of cardanol and add it into a three-necked flask with mechanical stirring, reflux condenser and temperature control, start stirring and heating. Maintaining the reaction temperature at 12°C, slowly added 150 g of m-chloroperoxybenzoic acid, and reacted for 5 hours. After the reaction, the temperature was lowered to obtain a brown-red transparent liquid. After the reaction product was filtered, it was washed with 5% KOH solution, and then washed with distilled water until it became neutral. The organic phase was distilled under reduced pressure at 100 Pa and 150 ° C for 1 hour to remove water and unreacted raw materials to obtain an orange-red transparent liquid. , the conversion rate of the product is 97.6%, and the purity of epoxidized cardanol is greater than 98%.
Embodiment 3
[0071] Example 3 Preparation of 2-tert-butyl-4-epoxypentadecylphenol
[0072] Dissolve 35g of the epoxidized cardanol prepared in Example 1 into 100ml of acetone, put it into a 250ml three-necked reaction flask, add 0.9g of zinc chloride catalyst, start stirring and heating, and maintain the reaction temperature at 60°C. 9.5 g of tert-butyl chloride was slowly added dropwise into the reaction flask, and the reaction was continued for 3 hours after the dropwise addition was completed. After the reaction, the temperature was lowered to obtain a brown-red transparent liquid. After filtering the reaction product, wash it with 5% KOH solution for alkali, then wash it with distilled water until neutral, distill it under reduced pressure at 1000Pa and 120°C for 1h, remove the solvent, water and unreacted raw materials, and obtain a dark brown-red viscous product. Liquid, product conversion 81.6%.
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