WO2015089795A1

WO2015089795A1 - Lubricating oil having antioxidant additive

Info

Publication number: WO2015089795A1
Application number: PCT/CN2013/089977
Authority: WO
Inventors: 龚金凤
Original assignee: 龚金凤
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2015-06-25

Abstract

A lubricating oil having an antioxidant additive, wherein the antioxidant additive is made by mixing the following components by weight percent: an ethylene-propylene copolymer of 10-20 parts; a diaryl sulfide of 5-10 parts; polyacrylate of 5-8 parts; a polyalkoxy polyol of 5-10 parts; a styrene ester polymer of 5-8 parts; and a base oil of 30-60 parts. By combining the components of the antioxidant additive, a viscosity index improver, and a dispersing agent together with one another, and working comprehensively, the wear-resistant, extreme pressure-resistant and antioxidant performance are improved, and the lubricating oil has a good detergency effect, and also a good blistering-resistance effect.

Description

Lubricating oil with anti-oxidant additive

The present invention relates to a lubricating oil, and more particularly to a lubricating oil having an antioxidant additive. Background technique

With the increase in the use of vehicles in modern society, the technology of the engine has developed rapidly, which puts higher demands on the quality of lubricating oil. At present, the use of various lubricating oil additives on the market mainly improves lubrication. The overall performance of the oil, such as abrasion resistance, oxidation resistance, pressure resistance, etc., has played a certain role. Especially for anti-corrosion antioxidants, the oxidation stability of gasoline engine lubricated book oil is an extremely important control indicator. Antioxidants are sometimes referred to as oxidation inhibitors; they increase the oxidation resistance of the composition and can act by binding to the peroxide and modifying the peroxide to decompose the peroxide, or by rendering the oxidation catalyst inert. Make them harmless. Oxidative deterioration can be manifested by sludge in the lubricant, varnish-like deposits on the metal surface, and by viscosity increase.

As the lubricating oil is affected by operating temperature, metal catalysis, combustion products and helium during use, it will gradually lose its antioxidant activity, cause oxidative deterioration, and make the oil clean, dispersible and abrasion resistant. Suffering from rapid damage, increased viscosity, formation of paint films, deposits, etc., which can cause serious damage to engine components.

At present, there are many kinds of lubricating oil anti-oxidation additives in the market in China, but they can not achieve the desired effect; the imported lubricating oil anti-corrosion and anti-oxidation additives are very expensive, and for the consumers, there is an extra burden, and these Lubricating oil anti-oxidation additives have short defects in the use period. Summary of the invention

The object of the present invention is to provide a lubricating oil with an anti-oxidant additive, which has a very obvious anti-oxidation effect on the engine oil, and can ensure the lubricating effect of the lubricating oil for a long time, and prolongs the problem existing in the above technology. Oil change interval.

Another object of the present invention is to provide a lubricating oil having an antioxidant additive which is easy to produce and which can effectively reduce the manufacturing cost, thereby providing the consumer with an inexpensive and stable product. In order to achieve the above object, the present invention has been achieved in accordance with the following scheme.

A lubricating oil having an antioxidant additive, characterized in that the antioxidant additive is prepared by mixing the following components in a weight ratio (the ratios described below are weight ratios unless otherwise specified):

Ethylene-propylene copolymer, 10-20 parts;

Diaryl sulfide, 5-10 parts;

Polyacrylate; 5-8 parts;

Polyoxyl polyol; 5-10 parts;

Styrene ester polymer, 5-8 parts;

Base oil, 30-60 parts.

The preparation method is as follows: the above base oil, ethylene-propylene copolymer, polyacrylate, polydecyloxypolyol and styrene ester polymer are uniformly mixed and heated to 30 ° C for 30 minutes, and diaryl sulfide is added. Stirring was continued and the temperature was raised to 55 ° C - 70 ° C, stirred for 120 minutes, and filtered to obtain the product.

Wherein the diaryl sulfide is an antioxidant additive, preferably in an amount of from 7 to 10 parts.

The polyacrylate; preferably in an amount of from 7 to 8 parts.

The polyalkoxy polyol; preferably in an amount of from 6 to 7 parts.

The styrene ester polymer is preferably used in an amount of 5-6 parts.

The formula used in the invention combines the anti-oxidation additive with the viscosity index improver, the dispersant and the like organically, and comprehensively exerts the effect, thereby improving the anti-wear and anti-pressure and oxidation resistance of the lubricating oil, and the lubricating oil It has a good cleaning effect and good anti-foaming effect.

Moreover, the preparation of the invention is simple and practical, the preparation cost is low, the service life of the lubricating oil can be effectively extended, and the lubrication effect is improved. detailed description

The invention is further illustrated by the following examples. It should be noted that the specific description of the present invention is not intended to limit the invention, and the technical solutions implemented in an approximate manner are equivalent to the specific embodiments of the invention.

It should be noted that the weight percentages below have different points in different embodiments, but these points together constitute a range of coverage, and the points within the scope of the present invention are all within the scope of the present invention. [Example 1].

30 parts of the above base oil, 10 parts of ethylene-propylene copolymer, 5 parts of polyacrylate, 5 parts of polyalkoxy polyol and 5 parts of styrene ester polymer, uniformly mixed and heated to 30 ° C, stirred 30-40 Minutes, add 5 parts of diaryl sulfide, continue stirring and warm to 55 ° C -70 ° C, stir for 120 minutes, filter to obtain the product

When using, add the product to the fuel tank of the motor vehicle in a proportion of 3-4% by weight. In-use detection: The engine noise is significantly reduced, and the fuel consumption is saved. The service life of the lubricating oil is more than 2 times, and the use effect is good.

[Example 2].

60 parts of the above base oil, 20 parts of ethylene-propylene copolymer, 8 parts of polyacrylate, 10 parts of polyalkoxy polyol and 8 parts of styrene ester polymer, uniformly mixed and heated to 30 ° C and stirred 30-40 Minutes, 10 parts of diaryl sulfide was added, stirring was continued and the temperature was raised to 55 ° C - 70 ° C, stirred for 120 minutes, and filtered to obtain a wide product.

[Embodiment 3]

40 parts of the above base oil, 10 parts of ethylene-propylene copolymer, 7 parts of polyacrylate, 6 parts of polydecyloxypolyol and 5 parts of styrene ester polymer, uniformly mixed and heated to 30 ° C and stirred 30-40 Minutes, 7 parts of diaryl sulfide were added, stirring was continued and the temperature was raised to 55 ° C - 70 ° C, stirred for 120 minutes, and filtered to obtain the product.

[Embodiment 4]

50 parts of the above base oil, 15 parts of ethylene-propylene copolymer, 8 parts of polyacrylate, 7 parts of polydecyloxy polyol and 6 parts of styrene ester polymer, uniformly mixed and heated to 30 ° C and stirred 30-40 Minutes, add 10 parts of diaryl sulfide, continue to stir and heat to 55 ° C -70 ° C, stir for 120 minutes, after filtration, you will get wide - in mouth mouth ₀ When using, add the product to the fuel tank of the motor vehicle in a proportion of 3-4% by weight. In-use detection: Engine noise is significantly reduced, fuel can be saved at the same time, the service life of the lubricant is increased by more than 2 times, and the use effect is good.

[Example 5].

50 parts of the above base oil, 12 parts of ethylene-propylene copolymer, 7 parts of polyacrylate, 6 parts of polydecyloxypolyol and 6 parts of styrene ester polymer, uniformly mixed and heated to 30 ° C and stirred 30-40 Minutes, add 8 parts of diaryl sulfide, continue stirring and warm to 55 °C-70 °C, stir for 120 minutes, filter to obtain the product

In conclusion, the above description is only a specific description of the implementation of the invention, and does not represent all the embodiments of the invention. Equivalent changes and modifications made on the basis of the objects and technical solutions of the present invention are within the scope of the invention.

Claims

claims

1. A lubricating oil with an antioxidant additive, characterized in that the antioxidant additive is made by mixing the following ingredients in a weight ratio:

Ethylene-propylene copolymer, 10-20 parts;

Diaryl sulfide, 5-10 parts;

Polyacrylate; 5-8 parts;

Polyalkoxy polyol; 5-10 parts;

Styrene ester polymer, 5-8 parts;

Base oil, 30-60 parts.

2. The lubricating oil with an antioxidant additive as claimed in claim 1, characterized in that the diaryl sulfide is an antioxidant additive, and its preferred dosage is 7-10 parts.

3. The lubricating oil with antioxidant additive as claimed in claim 1, characterized in that the polyacrylate is preferably used in an amount of 7-8 parts.

4. The lubricating oil with antioxidant additive as claimed in claim 1, characterized in that the polyoxyl polyol has a preferred dosage of 6-7 parts.

5. The lubricating oil with an antioxidant additive as claimed in claim 1, characterized in that the preferred dosage of the styrene ester polymer is 5-6 parts.