Diesel engine oil composition and preparation method thereof

An oil composition and composition technology, applied in the field of lubricating oil, can solve the problems of strong steric hindrance effect, low freezing point, anti-oxidation performance, etc., and achieve the effects of inhibiting coking, improving anti-oxidation performance, and good piston cleaning performance

Active Publication Date: 2022-07-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The hindered phenolic antioxidant that is widely used in fields such as lubricating oil, fuel oil at present is symmetrical type hindered phenolic antioxidant, and there are many related patents, as CN 1611563A discloses a kind of symmetrical type hindered phenolic antioxidant, has It has the characteristics of low point and strong anti-oxidation performance, but it has the disadvantage of strong steric hindrance effect in the molecular structure that is common in symmetrical hindered phenol antioxidants

Method used

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  • Diesel engine oil composition and preparation method thereof
  • Diesel engine oil composition and preparation method thereof
  • Diesel engine oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The preparation of embodiment 1 epoxidized cardanol

[0067] Take 100 g of cardanol, 8 g of formic acid, 0.3 g of sulfuric acid, and 200 g of hydrogen peroxide, put them in a three-necked flask with mechanical stirring, a reflux condenser and temperature control, and turn on stirring and heating. The reaction temperature was maintained at 70°C, and the reaction was carried out for 3 hours. After the reaction was completed, the temperature was lowered to obtain a brown-red transparent liquid. The reaction product was filtered, washed with 5% KOH solution, then washed with distilled water until neutral, and the organic phase was distilled under reduced pressure at 100Pa and 150°C for 1h to remove water and unreacted raw materials to obtain orange-red transparent liquid , denoted as H-1. The conversion rate of the product was 96.2%, and the purity of the epoxidized cardanol was more than 98%.

Embodiment 2

[0068] The preparation of embodiment 2 epoxidized cardanol

[0069] Take 100g of cardanol and add it to a three-necked flask with mechanical stirring, reflux condenser and temperature control, start stirring and heating. The reaction temperature was maintained at 12° C., 150 g of m-chloroperoxybenzoic acid was slowly added, and the reaction was carried out for 5 hours. After the reaction was completed, the temperature was lowered to obtain a brown-red transparent liquid. The reaction product was filtered, washed with 5% KOH solution, then washed with distilled water until neutral, and the organic phase was distilled under reduced pressure at 100Pa and 150°C for 1h to remove water and unreacted raw materials to obtain orange-red transparent liquid , denoted as H-2. The conversion rate of the product was 97.6%, and the purity of the epoxidized cardanol was more than 98%.

Embodiment 3

[0070] Example 3 Preparation of 2-tert-butyl-4-epoxypentadecylphenol

[0071] 35g of epoxidized cardanol prepared in Example 1 was dissolved in 100ml of acetone, put into a 250ml three-necked reaction flask after being dissolved, 0.9g of zinc chloride catalyst was added, stirring and heating were started, and the reaction temperature was maintained at 60°C. 9.5 g of tert-butyl chloride was slowly added dropwise to the reaction flask, and the reaction was continued for 3 hours after the dropwise addition was completed. After the reaction was completed, the temperature was lowered to obtain a brown-red transparent liquid. The reaction product was filtered, washed with 5% KOH solution, then washed with distilled water until neutral, and distilled under reduced pressure at 1000Pa and 120°C for 1 h to remove the solvent, water and unreacted raw materials to obtain a dark brown-red viscous Liquid, denoted as F-1. Product conversion was 81.6%.

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Abstract

The present invention provides a diesel engine oil composition, comprising phenol derivatives, amine antioxidants, sulfurized alkyl phenates, sulfonates, ZDDP, ashless dispersants, viscosity index improvers, pour point depressants, antifoams and the main amount of lubricating base oil; the structure of the phenolic derivatives is shown in the general formula (I): the definitions of the groups in the formula (I) are shown in the description. The diesel engine oil composition of the invention improves the anti-oxidation performance of the diesel engine oil, can effectively inhibit the viscosity increase of the oil product due to oxidation during the use process, and prolong the oil change period of the product; under the condition that the soot content is as high as 6%, the oil product It still has excellent dispersion performance and good piston cleaning performance, which can effectively suppress the problems of coking, carbon deposition and discoloration of skirt lining in the piston ring groove and ring land, and can meet the specifications of API CH‑4 and CI‑4.

Description

technical field [0001] The present invention relates to a lubricating oil, in particular to a diesel engine oil composition and a preparation method thereof. Background technique [0002] Modern engines usually work under different fuel engines and different environmental conditions, so the engine oil should have the advantages of easy starting, maintaining appropriate viscosity under high temperature conditions, anti-wear and anti-friction, so as to maintain the cleanliness of moving parts, prevent corrosion and The occurrence of rust. Heavy-duty diesel engines, especially those with high power density, are required to have higher high-temperature anti-oxidation, anti-coking and anti-wear properties due to their high combustion temperature and high average burst pressure. [0003] CN 102618364 discloses a high power density diesel engine lubricating oil composition, which can reduce engine wear and has good detergency, sludge dispersibility and high-temperature oxidation r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M129/18C10M169/04C07D301/12C07D303/14C10N40/25C10N30/04C10N30/10
CPCC10M129/18C10M169/048C07D301/12C07D303/14C10M2215/064C10M2219/087C10M2219/046C10M2223/045C10M2217/00C10M2215/086C10M2207/042C10M2203/1025
Inventor 曾颖峰陈晓伟杨永璧兰晓艳梁志跃
Owner CHINA PETROLEUM & CHEM CORP
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