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Lubricating oil additive, preparation method thereof and lubricating oil containing same

A lubricating oil additive and polymer technology, which is applied in the field of lubricating oil, can solve the problems of polymer chain breakage, reduce lubricating oil, etc., and achieve the effect of increasing viscosity index, reducing load, and increasing viscosity

Inactive Publication Date: 2011-09-28
巴鲁德(天津)润滑科技有限公司
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AI Technical Summary

Problems solved by technology

The existing acrylic lubricating oil additives are prone to breakage of polymer chains caused by shearing, which has the fatal defect of reducing the life of lubricating oil, and needs to be improved urgently

Method used

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Examples

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Effect test

preparation Embodiment 1

[0033] The preparation method of lubricating oil additive of the present invention is as follows: (the present embodiment is illustrated with polymethyl methacrylate-b-polylauryl methacrylate as an example)

[0034] (1) Prepare the initiator: add a three-way valve to a 100ml Schlenk (schlenk) type glass reaction vessel, replace the inside with nitrogen, add toluene 43.3g, 1,1,4,7,10 at room temperature , 0.066 g (0.286 mmol) of 10-hexamethyltriethylenetetramine, 1.06 g of a toluene solution containing 0.708 mmol of isobutylbis (2,6-di-tert-butyl-4-methylphenoxy) aluminum, Further add 0.14 g of a mixed solution of cyclohexane and n-hexane containing 0.237 mmol of sec-butyllithium;

[0035] (2) Preparation of copolymer: 1. continue to add 1.73 g of methyl methacrylate in the above-mentioned container, the reaction solution was yellow at the beginning, and became colorless after stirring at room temperature for 10 minutes. At this time, 0.5 g of the reaction solution was collecte...

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Abstract

The invention relates to a lubricating oil additive, a preparation method thereof and lubricating oil containing the same. The lubricating oil additive has an acrylic acid series segmented copolymer structure and also has a general formula comprising at least one of (A-B)a, (A-B)b-A or (B-A)c-B, wherein A stands for a copolymer block consisting of (methyl) acrylic acid alkyl ester with alkyl with 1-3 carbon atoms; and B stands for a copolymer block consisting of (methyl) acrylic acid alkyl ester with alkyl with 4-30 carbon atoms, and the mass ratio of A to B is 1 / 99-40 / 60. Compared with the traditional acrylic acid series lubricating oil additive, the lubricating oil additive provided by the invention has good tackifying effect and can ensure that the viscosity index of the lubricating oil can be greatly improved with less addition amount, the low-temperature characteristics, the flowing characteristics and the shearing stability can be improved, the service life of the lubricating oil can be prolonged, energy resources can be saved, and the load on global environment is reduced.

Description

technical field [0001] The invention relates to a lubricating oil additive, especially a lubricating oil additive, a preparation method thereof and a lubricating oil containing the additive. Background technique [0002] In recent years, in the field of environmental protection and energy saving, people have been working on how to prolong the service life of lubricating oil, and then reduce the amount of lubricating oil per unit time, so as to achieve the purpose of saving energy. Lubricating oil additives have become the key factor to prolong the service life. The current lubricating oil additives cannot meet the requirements in terms of improving viscosity index, low temperature viscosity characteristics, reducing pour point, shear stability, etc., and need to further improve performance in all aspects. Similar lubricating oil additives are mainly synthesized by free radical polymerization and have a wide molecular weight distribution. The existing acrylic lubricating oil...

Claims

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Application Information

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IPC IPC(8): C10M145/14C08F293/00C10M177/00C10N40/04
Inventor 程林
Owner 巴鲁德(天津)润滑科技有限公司
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