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Ester compound, preparation method and application thereof, and antioxidant composition

A technology of ester compounds and compounds, applied in the preparation of organic compounds, cyanide reaction preparation, lubricating compositions, etc., can solve the problems of low product yield, easy precipitation, poor oil solubility, etc.

Pending Publication Date: 2022-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are patents and documents introducing the preparation method of benzotriazole derivatives, the method or reaction conditions are strictly controlled, or separation and purification are difficult, and the product yield is low
[0008] The product produced by the original process is a light yellow flocculent solid. This product has certain oil solubility, anti-wear, anti-oxidation, anti-corrosion, anti-rust and other properties. The oil is turbid, and it will settle down after long-term storage, which is not good for the performance of the oil under low temperature conditions.

Method used

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  • Ester compound, preparation method and application thereof, and antioxidant composition
  • Ester compound, preparation method and application thereof, and antioxidant composition
  • Ester compound, preparation method and application thereof, and antioxidant composition

Examples

Experimental program
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Effect test

Embodiment 1

[0109] Add 117g raw material 4,4'-diisooctyl-diphenylamine (VANLUBEV81) to 117g 100℃ kinematic viscosity=3.8mm 2 / s Trimethylolpropane saturated fatty acid ester, heat, stir and dissolve the mixed system in the presence of nitrogen, maintain the mixed system at 145°C, add 84g of di-tert-butyl peroxide to the reaction system, and react at a constant temperature of 145°C 4h, then distill under reduced pressure at 145°C and ≤1000Pa for 30min, then increase the vacuum degree to ≤500Pa, and gradually raise the temperature to and maintain at 175°C for more than 40min under reduced pressure distillation. After the vacuum distillation is completed, the product is cooled under a nitrogen environment , to finally obtain 225g of reaction product A1, the reaction product A1 mainly contains compounds of structural formula P-1, structural formula P-2, structural formula P-3 and a small amount of structural formula P-4, structural formula P-5, structural formula P-6, The compound of structur...

Embodiment 2

[0122] Add 120g raw material 4,4'-diisooctyl-diphenylamine to 120g 100℃ kinematic viscosity=5.02mm 2 / s Heat, stir and dissolve the mixed system in the pentaerythritol ester in the presence of nitrogen, maintain the mixed system at 140°C, add 88g of di-tert-butyl peroxide to the reaction system, and carry out the reaction at 140°C for 3h, then at 140°C, Distill under reduced pressure at ≤1000Pa for 30min, then raise the vacuum degree to ≤500Pa, and at the same time gradually raise the temperature to and maintain at 175°C for more than 40min under reduced pressure distillation. Product A2, the reaction product A2 mainly comprises ester compounds of structures similar to structural formula P-1, structural formula P-2, and structural formula P-3 (the difference is that the ester group in the ester compound in this embodiment is pentaerythritol ester Ester group), while containing a small amount of compounds of structural formula P-4, structural formula P-5, structural formula P-6,...

Embodiment 3

[0124] Add 120g raw material 4,4'-diisooctyl-diphenylamine to 120g kinematic viscosity=5mm 2 / s mixed polyol saturated ester (wherein the mass ratio of trimethylolpropane saturated fatty acid ester and dipentaerythritol ester is 3:1), in the presence of nitrogen, the mixed system is heated and stirred, dissolved, and the mixed system is maintained at 150°C, add 72g of di-tert-butyl peroxide to the reaction system, react at 150°C for 4h, then distill under reduced pressure at 150°C and ≤1000Pa for more than 40min, after the vacuum distillation is completed, the product is cooled under nitrogen atmosphere , finally obtain 235g reaction product A3; Mainly comprise the compound of structural formula P-1, structural formula P-2, structural formula P-3 similar structure in the reaction product A3 (the difference is that the ester group in the ester compound in the present embodiment is The ester group of mixed polyol saturated ester) contains less compound of structural formula P-4,...

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Abstract

The invention provides an ester compound as well as a preparation method and application thereof. The structure of the ester compound is shown as a formula (I), wherein the definition of each group is shown in the specification. The ester compound disclosed by the invention has excellent high-temperature corrosion resistance and oxidation resistance, can be used as a high-temperature antioxidant of ester-based lubricating oil, can remarkably improve the high-temperature corrosion resistance, oxidation resistance and stability of the ester-based lubricating oil, and can remarkably improve the solubility and stability of an arylamine additive in ester base oil; the solubility and the dispersing performance of consumed additive residues in base oil are remarkably improved, generation of sediments of ester oil products in a high-temperature environment is reduced, and the ester lubricating oil keeps good low-temperature fluidity and low-temperature viscosity.

Description

technical field [0001] The invention relates to an ester compound, in particular to an ester compound which can be used in aviation synthetic ester lubricating oil and has high-temperature anti-oxidation and anti-corrosion properties. Background technique [0002] The high-temperature corrosion and oxidation stability of aero-engine lubricating oil refers to the ability of lubricating oil to resist oxidation at high temperature and alleviate high-temperature deposition during use, which is an important manifestation of the high-temperature anti-oxidation performance of aero-engine oil. Under the induction of high temperature oxygen and metal catalysis, lubricating oil undergoes a series of chemical changes such as oxidation, polymerization, alkylation, and decomposition in a short period of time, resulting in a large amount of sludge and other deposits in the engine oil, which adhere to metal accessories, and pistons stick to rings, Severely corrodes the equipment, shortens ...

Claims

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Application Information

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IPC IPC(8): C07C229/18C07C227/06C10M133/12C10M133/02C10M169/04C10N30/10C10N30/08C10N30/12C10N20/02
CPCC07C229/18C07C227/06C10M133/12C10M133/02C10M169/04C10M2215/064C10M2215/18C10M2215/066C10M2223/04C10M2207/2835
Inventor 唐红金梁宇翔刘辉阎欢韩天昊
Owner CHINA PETROLEUM & CHEM CORP
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