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Preparation method of lubricating oil tackifier with high shear resistance

A technology for lubricating oil and tackifier, which is applied in the field of preparation of lubricating oil tackifier, can solve the problems of poor mass transfer and heat transfer effect, narrow OCP polymer VII, difficult control of degradation degree, etc., and achieves full automation of production process , The effect of improving shear resistance and low production cost

Inactive Publication Date: 2016-08-24
上海时航科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic additive factories mainly use the degradation process to produce various types of OCP VII. The related process is relatively mature. However, when the traditional reactor oxidatively degrades the OCP polymer to prepare VII at high temperature, its mass and heat transfer effects are poor. The prepared OCP polymer VII has a low molecular weight and a wide molecular weight distribution, and when the degradation reaction is about to meet the technical requirements of qualified products, the reaction temperature cannot be rapidly reduced because the heat of reaction accumulated in the reactor cannot be removed in time. Come down, cause the degradation reaction of OCP polymer to be unable to terminate and over-degrade, the degree of degradation is difficult to control, and the product is difficult to accurately control within the expected effective range, and it is impossible to prepare OCP polymer VII with a narrow molecular weight distribution. Adding base oil for secondary adjustment will inevitably cause differences in the internal quality of different batches of products, the product quality is not easy to control, the shear stability of the product is relatively poor, and the shear index (SSI) between diesel nozzles is above 20. It is mostly used in medium and low-grade internal combustion engine oil products
To a large extent, it restricts the application scope and development prospect of this kind of viscosity index improver

Method used

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  • Preparation method of lubricating oil tackifier with high shear resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 127g of base oil (MVI 150) into a 250ml glass container equipped with a stirrer, thermometer, heating mantle and air pipe, start stirring, heat to 140°C, then add 22g of ethylene propylene rubber cut into small pieces (Jilin Petrochemical J-0050, ML (100°C, 1+4) 50±5), completely dissolved as component 1 for later use. After the temperature of the reactor (Corning's heart-shaped structural glass material microchannel reactor) reaches 150°C, the base oil solution of ethylene-propylene rubber (ie, component 1) and the catalyst peroxidation are started to be fed quantitatively and continuously. Methyl ethyl ketone 0.015g and air are passed into the reactor, the base oil solution flow rate of ethylene propylene rubber is 45ml / min, the catalyst flow rate is 0.003g / min, the air flow rate is 70ml / min, the residence time in the reactor is 8min, and then enters the heat exchange The device cools down and discharges the material.

[0026] The molecular weight distribution of...

Embodiment 2

[0028] Add 127g of base oil (MVI 150) into a 250ml glass container equipped with a stirrer, thermometer, heating mantle and air pipe, start stirring, heat to 140°C, then add 22g of ethylene propylene rubber cut into small pieces (Jihua J-0030, ML (100°C, 1+4) 30±5), completely dissolved as component 1 for later use. After the temperature of the reactor (Corning's heart-shaped structural glass material microchannel reactor) reaches 160°C, the base oil solution of ethylene-propylene rubber (ie component 1), catalyst 2, and 5-Dimethyl-2,5-di(t-butylperoxy)hexane 0.08g and air are passed into the reactor, the base oil solution flow rate of ethylene propylene rubber is 40ml / min, and the catalyst flow rate is 0.016g / min , the air flow rate is 50ml / min, the residence time in the reactor is 5min, then enters the heat exchanger to cool down, and discharges.

[0029] The obtained OCP polymer VII has a molecular weight distribution of 1.4-1.6 and a thickening capacity of 8.2mm 2 / s, shea...

Embodiment 3

[0031] Add 127g of base oil (MVI 150) into a 250ml glass container equipped with a stirrer, thermometer, heating mantle and air pipe, start stirring, heat to 140°C, then add 22g of ethylene propylene rubber cut into small pieces (Jilin Petrochemical J-0010:J-0050=8:2 (mass ratio)), completely dissolved as component 1 for later use. After the temperature of the reactor (Corning's heart-shaped structural glass material microchannel reactor) reaches 140°C, the base oil solution of ethylene-propylene rubber (ie component 1), catalyst two ( 0.15g of tert-butylperoxycumene)benzene and air pass into the reactor, the base oil solution flow rate of ethylene propylene rubber is 40ml / min, the catalyst flow rate is 0.025g / min, and the air flow rate is 80mL / min. The residence time is 6min, then enters the heat exchanger to cool down, and discharges.

[0032] The obtained OCP polymer VII has a molecular weight distribution of 1.4-1.6 and a thickening capacity of 8.3mm 2 / s, shear stabilit...

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Abstract

The invention relates to a preparation method of a lubricating oil tackifier with high shear resistance. The product quality is effectively controlled by means of an efficient mass transfer and heat transfer microchannel chemical reactor in combination with a thermal catalytic degradation, high-temperature thermal degradation and oxidative degradation combined process, the shear resistance of a product is sufficiently improved, the lubricating oil tackifier can be widely applied to top-grade internal combustion engine oil, hydraulic oil and gear oil products, and the preparation method is simple in process operation, mild in condition and environment-friendly.

Description

(1) Technical field [0001] The invention relates to a preparation method of a lubricating oil tackifier with high shear resistance. (2) Background technology [0002] In recent years, with the rapid development of the automobile industry, the development of engine technology is also changing with each passing day, which puts forward higher and higher requirements for automotive lubricants. In order to meet the harsh operating conditions such as high speed, high load, and low temperature, higher and higher requirements have been put forward for basic research on the performance of various additives added to lubricating oil, additive evaluation methods, and the performance of additive products. Internal combustion engine oil is rapidly developing. To the direction of high-grade and multi-grade oil. For example, in the development of multi-grade oil, in order to meet the high and low temperature performance of the oil, it is necessary to add an oil-soluble chain polymer to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/02C10N40/04C10N40/08C10N40/25
CPCC10M143/04C10M169/04C10M2205/022C10M2205/024C10N2030/02C10N2040/04C10N2040/08C10N2040/25
Inventor 高明滕嘉楠
Owner 上海时航科技有限公司
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