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Multifunctional oil additive and preparation method and application thereof

A lubricating oil additive and additive technology, applied in additives, petroleum industry, lubricating composition, etc., can solve the problems of high raw material price of chlorinated alkyl compounds, poor anti-wear performance, and insufficient extreme pressure performance, etc., and achieve good Anti-corrosion and anti-rust performance, low cost, excellent extreme pressure effect

Active Publication Date: 2020-07-03
玛可索(苏州)石化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The dialkyl dithiocarbamate group has certain extreme pressure, anti-wear and anti-oxidation effects. Most commercial additives containing this functional group on the market are highly corrosive, resulting in poor anti-wear properties. And the thermal stability is poor, and deposits will be generated at high temperatures
[0012] Compared with single liquid paraffin, this lubricating oil additive has improved tribological properties to a certain extent, but the extreme pressure performance is not good enough, and the raw material price of chlorinated alkyl compounds used in this additive is high, and there is no commercial product yet

Method used

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  • Multifunctional oil additive and preparation method and application thereof
  • Multifunctional oil additive and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The multifunctional oil additive provided by the present embodiment is prepared by the following method:

[0043] 1) Preparation of dialkyldithiocarbamate

[0044] Put 3.92 parts of dibutylamine and an equimolar amount of sodium hydroxide into a reactor equipped with 24 parts of tetrahydrofuran solvent and stir evenly. Control the temperature not higher than 15°C, stir rapidly, then slowly add carbon disulfide in an equimolar amount to dibutylamine, raise the temperature to room temperature after the addition, and react for 2 hours to obtain dialkyldithiocarbamate.

[0045] 2) Preparation of additives

[0046] In parts by weight, 6.89 parts of dialkyldithiocarbamate, 20.66 parts of 2-mercaptobenzothiazole and 0.14 parts of benzotriazole were added to the reactor, and then added 12 parts of ethanol solvent, 5 parts of sodium hydroxide, heated to about 70°C and stirred evenly; then added 58.54 parts of No. 42 chlorinated paraffin, kept the temperature at about 70°C, and...

Embodiment 2

[0048] The multifunctional oil additive provided by the present embodiment is prepared by the following method:

[0049] In parts by weight, 10.69 parts of dialkyldithiocarbamate, 17.82 parts of 2-mercaptobenzothiazole, 0.21 part of 2,5-dimercaptothiadiazole, 50 parts of tetrahydrofuran solvent and 4.5 parts of sodium hydroxide , heated to 70°C and stirred evenly; then slowly added 57.02 parts of No. 42 chlorinated paraffin, kept the temperature at about 70°C, and reacted for 6 hours; then added 14.26 parts of dioctylamine and 3.5 parts of sodium hydroxide, kept the temperature at 70°C After about 8 hours of reaction, after the reaction, cool to room temperature, filter, evaporate the solvent under reduced pressure, and obtain the product additive.

[0050] The preparation method of the dialkyldithiocarbamate used in this example is the same as the step 1) of Example 1.

Embodiment 3

[0052] The multifunctional oil additive provided by the present embodiment is prepared by the following method:

[0053] 1) Preparation of dialkyldithiocarbamate

[0054] Put 7.33 parts of dibutylamine and an equimolar amount of sodium hydroxide (20% concentration) into a reactor equipped with 15 parts of tetrahydrofuran solvent and stir evenly. Control the temperature not higher than 15°C, stir rapidly, slowly add carbon disulfide in an equimolar amount to dibutylamine, raise the temperature to room temperature after the addition, react for 2 hours, and distill off the solvent to obtain dialkyldithiocarbamate.

[0055] 2) Preparation of additives

[0056] In parts by weight, 12.89 parts of dialkyldithiocarbamate, 16.11 parts of 2-mercaptobenzothiazole, 0.13 part of methylbenzotriazole and 20 parts of aqueous sodium hydroxide (concentration is 20%) , heated to 70°C and stirred evenly; then added 54.77 parts of No. 52 chlorinated paraffin, kept the temperature at about 70°C, ...

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Abstract

The invention relates to a multifunctional oil product additive and a preparation method and application thereof. The preparation method comprises the following steps: in the presence of an acid neutralizer and a solvent, carrying out an alkylation reaction on the chlorinated paraffin, a first functional monomer and a second functional monomer, wherein the first functional monomer is dialkyl dithiocarbamate, and the second functional monomer is one or more of 2-mercaptobenzothiazole, 2, 5-dimercaptothiadiazole, triazole, benzotriazole and methylbenzotriazole. The preparation method is simple,the raw materials are easy to obtain, the cost is low, and the prepared oil additive not only has excellent extreme pressure, wear resistance and friction reduction performance, but also has good corrosion resistance and rust resistance.

Description

technical field [0001] The invention belongs to the technical field of industrial lubricants, and relates to a multifunctional oil additive and its preparation method and application. Background technique [0002] The main function of lubricating grease is to reduce the wear of mechanical parts, and to prevent rust and corrosion of parts. These functions are mainly realized by additives, such as extreme pressure agents, antiwear agents, wear reducers, rust inhibitors and metal passivators. Abrasives. [0003] With the rapid development of the machinery industry, all kinds of modern equipment have put forward higher requirements for the extreme pressure and anti-wear properties of lubricating oils. Traditional additives are difficult to meet their requirements, and high-performance additives with special molecular structures are too expensive to be used. restricted. [0004] In addition, the interaction between various additives makes the formulation design of lubricating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/36C10N30/06C10N30/12C10N30/10C10N50/10C10N40/20
CPCC10M135/36C10M2211/08C10M2219/104C10M2219/106
Inventor 徐晓丽
Owner 玛可索(苏州)石化有限公司
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