Lubricating oil additive as well as preparation method and application thereof

A lubricating oil additive and lubricating oil technology, applied in additives, lubricating compositions, petroleum industry, etc., can solve the problems of fluorine-containing lubricating oil application limitations, inability to dissolve well, and inability to achieve anti-rust effects, etc. Anti-rust operation effect, increase operation effect and service life, and anti-rust performance improvement effect

Inactive Publication Date: 2012-09-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of fluorine-containing lubricating oils, which have excellent lubricating properties and are increasingly widely used. However, in the process of use, metal parts of related equipment using lubricating oils often corrode. The liquid phase corrosion test is carried out according to the national standard GB / T11143-89. The test result of fluorine-containing lubricating oil is also medium rust or heavy rust, which has caused great restrictions on the application of fluorine-containing lubricating oil
In the prior art, there are many additives for lubricating oils, and among them, there are many types of additives that play an anti-rust role. However, such anti-rust additives are mainly used in mineral lubricating oils, and the anti-rust mechanisms are different, and the types are also different. performance of fluorine-containing lubricating oil, the existing anti-rust additives of these mineral lubricating oils cannot be used in the system of fluorine-containing lubricating oil because they cannot be dissolved well, so that the anti-rust effect cannot be achieved

Method used

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  • Lubricating oil additive as well as preparation method and application thereof
  • Lubricating oil additive as well as preparation method and application thereof
  • Lubricating oil additive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of perfluoropolyetheryl fluoride

[0036] Add hexafluoropropylene into the photooxidation reactor at a rate of 0.1kg / h, and oxygen at a rate of 100L / h, cool down the mixed hexafluoropropylene and oxygen to -70°C, and then turn on the ultraviolet lamp to irradiate and perform photooxidation. The reaction is initiated to obtain perfluoropolyetheryl fluoride as shown in formula (II).

[0037] (2) Separation of perfluoropolyether fluoride

[0038] Take 5kg of perfluoropolyetheryl fluoride prepared in step (1) and add it to the still, turn on the vacuum pump, keep the pressure of the distillation system at 40±5mmHg, heat up, and collect the distillate at 200°C to 250°C for later use. The obtained perfluoropolyetheryl fluoride The etheroyl fluoride fraction has a molecular weight of 3200 to 4800.

[0039] (3) Preparation of imidazoline intermediates

[0040] Add 500ml of solvent xylene, 1000g of benzoic acid and 800g of diethylenetriamine to a 3L reactor, p...

Embodiment 2

[0047] (1) Preparation of perfluoropolyetheryl fluoride

[0048] Add hexafluoropropylene into the photooxidation reactor at a rate of 1kg / h, and oxygen at a rate of 550L / h, cool down the mixed hexafluoropropylene and oxygen to -50°C, and then turn on the ultraviolet lamp for photoinitiation reaction to obtain perfluoropolyetheryl fluoride as shown in formula (II).

[0049] (2) Separation of perfluoropolyether fluoride

[0050] With embodiment 1.

[0051] (3) Preparation of imidazoline intermediates

[0052] Add solvent xylene 3L, benzoic acid 3110g and diethylenetriamine 1300g to a 10L reactor, pass nitrogen protection, stirring speed 50r / min, heat up to 100°C, stop stirring and heating after reacting for 5h, cool to room temperature, and then remove the solvent xylene by distillation to obtain the imidazoline intermediate as shown in formula (Ⅲ).

[0053] (4) Preparation of lubricating oil additives

[0054] Take 100g of the imidazoline intermediate obtained in step (3) ...

Embodiment 3

[0059] (1) Preparation of perfluoropolyetheryl fluoride

[0060] Add hexafluoropropylene into the photooxidation reactor at a rate of 5kg / h, add oxygen at a rate of 3500L / h, cool down the mixed hexafluoropropylene and oxygen to -40°C, and then turn on the ultraviolet lamp for photoinitiation reaction to obtain perfluoropolyetheryl fluoride as shown in formula (II).

[0061] (2) Separation of perfluoropolyether fluoride

[0062] With embodiment 1.

[0063] (3) Preparation of imidazoline intermediates

[0064] Add solvent xylene 10L, benzoic acid 6700g and diethylenetriamine 11200g to a 50L reactor, pass nitrogen protection, stirring speed 50r / min, heat up to 160°C, stop stirring and heating after reacting for 12h, cool to room temperature, and then remove the solvent xylene by distillation to obtain the imidazoline intermediate as shown in formula (Ⅲ).

[0065] (4) Preparation of lubricating oil additives

[0066] Take 4Kg of the imidazoline intermediate obtained in step (...

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Abstract

The invention relates to a lubricating oil additive as well as a preparation method and an application thereof. Benzoic acid, diethylenetriamine and hexafluoropropylene are used as main raw materials to synthetize the lubricating oil additive containing an imidazoline type molecule similar structure. The lubricating oil additive disclosed by the invention can be completely dissolved in fluorin-contained lubricating oil, so that the anti-corrosion performance of the fluorin-contained lubricating oil can be substantially improved, the fluorin-contained lubricating oil has good stability and is used for a long time, and the rust-free operation effect is guaranteed so as to fully protect the metal parts of relevant equipment. The lubricating oil additive has the advantages of simple preparation method and low economic cost, the performance of the fluorin-contained lubricating oil is effectively improved, the operation effect of the relevant equipment is substantially improved, the service life of the relevant equipment is substantially prolonged, and the lubricating oil additive is suitable to popularize and apply in the relevant lubricating oil.

Description

technical field [0001] The invention relates to a lubricating oil additive and its preparation method and application, in particular to the technical field of fluorine-containing lubricating oil additives. Background technique [0002] At present, there are many kinds of fluorine-containing lubricating oils, which have excellent lubricating properties and are increasingly widely used. However, in the process of use, metal parts of related equipment using lubricating oils often corrode. The liquid phase corrosion test is carried out according to the national standard GB / T11143-89. The test result of fluorine-containing lubricating oil is also medium rust or heavy rust, which has caused great restrictions on the application of fluorine-containing lubricating oil. In the prior art, there are many additives for lubricating oils, and among them, there are many types of additives that play an anti-rust role. However, such anti-rust additives are mainly used in mineral lubricating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M149/12C10M177/00C08G65/333C10N30/12
Inventor 辛虎宋恒凯李伟东
Owner CHINA PETROLEUM & CHEM CORP
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