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High-viscosity-index modifying agent, and preparation method and application thereof

An improver, high viscosity technology, applied in the preparation of power steering oil, preparation of high viscosity index improver, high viscosity index improver field, can solve the problems of low cost of raw materials, difficult to obtain, etc. The effect of lowering the resistance and lowering the working temperature

Inactive Publication Date: 2019-06-14
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of raw materials for highly branched polyethylene viscosity index improvers is low, and a new type of (α-diimine) nickel catalyst is required in the preparation process, which is protected by patents and is not easy to obtain

Method used

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  • High-viscosity-index modifying agent, and preparation method and application thereof
  • High-viscosity-index modifying agent, and preparation method and application thereof
  • High-viscosity-index modifying agent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add the composition of the power steering oil of high viscosity index improver of the present invention:

[0033] Described III group base oil is 150N, and its consumption is 94.6%;

[0034] The extreme pressure antiwear agent is borate, and its consumption is 2.1%;

[0035] Described metal corrosion inhibitor is benzotriazole, and its consumption is 0.6%;

[0036] The antioxidants are dialkyldiphenylamine, 2,6-di-tert-butylphenol and 2,6-di-tert-butyl-p-cresol in a ratio of 1:1:1, and the dosage range is 0.7%;

[0037] The detergent is calcium naphthenate, and its dosage range is 0.2%;

[0038] The anti-foaming agent is methylphenyl silicone oil, and its consumption range is 0.2%. ;

[0039] The viscosity index improver is butyl methacrylate, stearyl methacrylate and behenyl methacrylate in a ratio of 1:1:1, and the dosage range is 1.6%.

[0040] 10% butyl methacrylate, 40% toluene, mix in proportion, stir at 30℃~50℃ for 1h~2h, add 20% dibenzoyl peroxide and conti...

Embodiment 2

[0044] Add the composition of the power steering oil of high viscosity index improver of the present invention:

[0045] Described III group base oil is 150N, and its consumption is 93.9%;

[0046] Described extreme pressure antiwear agent is borate, and its consumption is 1.8%;

[0047] Described metal corrosion inhibitor is tolyltriazole, and its consumption is 0.7%;

[0048] The antioxidant is N,N'-diphenyl-p-phenylenediamine and 2,6-di-tert-butylphenol, the ratio is 1:1, and the dosage range is 1.3%;

[0049] Described cleaning agent is calcium petroleum sulfonate, and its consumption range is 0.3%;

[0050] Described antifoaming agent is polymethicone oil, and its consumption range is 0.2%;

[0051] The viscosity index improver is butyl methacrylate, octyl methacrylate and stearyl methacrylate in a ratio of 1:1:1, and the dosage range is 1.8%.

[0052] Butyl methacrylate is 10%, cyclohexane is 40%, mix in proportion, stir at 30℃~50℃ for 1h~2h, add 20% benzoyl peroxide...

Embodiment 3

[0056] Add the composition of the power steering oil of high viscosity index improver of the present invention:

[0057] Described III group base oil is 150N, and its consumption is 93.7%;

[0058] The extreme pressure antiwear agent is borate, and its consumption is 2.1%;

[0059] Described metal corrosion inhibitor is alkenyl succinic acid, and its consumption is 0.6%;

[0060] The antioxidant is N, N'-diphenyl-p-phenylenediamine and 2,6-di-tert-butyl-p-cresol, the ratio is 1:1, and the dosage range is 1.3%;

[0061] Described cleaning agent is calcium petroleum sulfonate, and its consumption range is 0.3%;

[0062] Described antifoaming agent is simethicone oil, and its consumption scope is 0.2%;

[0063] The viscosity index improver is butyl methacrylate, octyl methacrylate, octadecyl methacrylate and behenyl methacrylate, the ratio is 1:1:1:1, and the dosage range is 1.8% .

[0064] 10% butyl methacrylate, 40% xylene, mix in proportion, stir at 30°C-50°C for 1h-2h, a...

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PUM

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Abstract

The invention relates to a high-viscosity-index modifying agent, and a preparation method and application thereof. The modifying agent is prepared from three or four kinds of low-molecular-weight metacrylic acid ester. The preparation method comprises the following steps of proportionally mixing 10 percent of low-molecular-weight metacrylic acid ester and 40 percent of solvents in percentage by mass; performing stirring for 1 to 2 h at 20 to 40 DEG C; adding 20 percent of initiators; continuously performing stirring for 0.5 h; slowly adding 30 percent of high-molecular-weight metacrylic acid ester; continuously performing stirring for 1 to 2 h; preparing the high-viscosity-index modifying agent. The invention solves the problems of great viscosity loss or poor viscosifying effect of the single metacrylic acid ester; the modifying agent can be matched with basic oil for realizing the goal that power steering oil has good anti-shearing performance, viscosifying performance and performance for reducing the oil temperature of the power steering system; the metacrylic acid ester per se also has an anti-coagulating effect, so that the compounded power steering oil has good low-temperature performance; the service life of the power steering oil is prolonged; the quality problem of inflexible steering in winter is solved; the oil changing mileage is favorably increased.

Description

technical field [0001] The invention belongs to the technical field of high-viscosity index improvers, and in particular relates to a high-viscosity index improver, a preparation method of the high-viscosity index improver and a method for preparing power steering oil. Background technique [0002] With the continuous improvement of vehicle steering system technology, the oil change mileage is continuously extended. At present, automobile manufacturers gradually increase the oil change mileage of the power steering system from 20,000 kilometers, 40,000 kilometers, and 100,000 kilometers to 200,000 kilometers. Moreover, once the winter in the north enters, the steering sinks and the power steering pump is damaged. For this reason, It is necessary not only to improve the anti-wear performance of power steering oil, but also to improve low-temperature performance, viscosity-temperature performance, shear resistance, and reduce the working temperature of power steering oil to me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M129/70C10M169/04C10N30/02C10N30/08
Inventor 桃春生闫瑾王清国迟涵文王建宇温圣灼逢立深王明明李乐王彦冬李艳慧
Owner FAW JIEFANG AUTOMOTIVE CO
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