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Lubricating oil composition and preparation method thereof

A technology of lubricating oil composition and lubricating oil base oil, which is applied in the direction of lubricating composition, petroleum industry, additives, etc., and can solve the problem of unmentioned antioxidant composition coordination and compatibility, restriction of industrialization promotion, and unstable product appearance etc. to achieve good oxidation stability, enhanced comprehensive performance, excellent high-efficiency oxidation stability and anti-oxidant synergy

Active Publication Date: 2013-07-10
埃优诺特种新材料科技(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For oils that require extremely high anti-oxidation performance, the method of increasing the dosage of antioxidants is generally used, so there are problems such as improving the oxidation resistance and bringing some adverse effects on other properties of the lubricant.
Chinese patent application CN102417845A discloses a composite antioxidant composition for lubricating oils, which includes phosphorus-containing antioxidants, hindered phenolic amines, zinc dialkyldithiophosphate and metal deactivator benzotri Nitroxazoles; although the oxygen bomb of lubricating oil can reach more than 3000min, the total dosage is as high as 2.7%
JP57115493 mentions that 2,2,4-trimethyl-1,2-dihydroquinoline antioxidants have a good antioxidant effect on mineral lubricating oils, but emphasizes that its dimer content is greater than 25%, Monomer content is less than 10%; US5310491 discloses a kind of method that utilizes the reaction product of alkyl-substituted 1,2 dihydroquinoline and diphenylamine as lubricating oil antioxidant, obtains better effect, but the preparation of this reaction product needs Under the action of Lewis acidic catalyst, after high temperature and long time reaction, and finally a series of complicated procedures such as distillation and filtration purification; US6726855B1 mentions that 2,2,4-trimethyl-1,2-dihydroquinoline antioxidant It is directly compounded with diamines, that is, two kinds of amine antioxidants, which have excellent antioxidant synergy, but because the oil contains amine antioxidants, there is a tendency to change color during storage and use. The compounding of amine antioxidants will lead to unstable appearance of the product, which limits its industrialization
In addition, the patent does not mention the coordination and compatibility of this antioxidant composition with other types of antioxidants

Method used

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  • Lubricating oil composition and preparation method thereof
  • Lubricating oil composition and preparation method thereof
  • Lubricating oil composition and preparation method thereof

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preparation example Construction

[0054] The preparation method of the lubricating oil composition provided by the invention comprises: mixing component A, component B, component C and optionally added component D, stirring at 20-60° C. until uniform and transparent.

[0055] The present invention adopts lubricating oil oxidation stability measurement method (rotary oxygen bomb method) (BROT) and pressurized differential scanning calorimetry (PDSC) to evaluate oxidation properties respectively. BROT is a widely accepted method in the lubricating oil industry. The test method for rapid verification of oxidation stability, the method number is ASTM D2272-85 (SH / T0193-1992). Put the sample, distilled water and copper catalyst coil together in a glass sample container with a cover, and put it into the oxygen bomb equipped with a pressure gauge. The oxygen bomb is filled with oxygen at a pressure of 620KPa (6.2bar or 90psi) at room temperature and placed in an oil bath at a specified temperature (150°C). The oxyge...

Embodiment 1

[0061] Put 85g of Group III oil 150N and 15g of nonyl trimellitate into a 200ml beaker, and then add 0.8g of Naugalube TMQ (2,2,4-trimethyl-1,2-dihydroquinoline anti Oxygen agent, Uniroyal Chemical Company, Inc., the same below) and 0.1g of benzotriazole derivative T551 (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., the same below), stirred at 40°C until uniform and transparent to obtain a light yellow lubricating oil combination Object I, after 3 months of static storage, the color has no change.

Embodiment 2

[0065] Get 85g III type oil 150N and 15g nonyl trimellitate respectively and put into 200ml beaker, then add the Naugalube TMQ of 1.7g and the thiadiazole derivative T561 of 0.035g (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., under same), and stirred at 50°C until uniform and transparent to obtain light yellow lubricating oil composition III, which remained unchanged after 3 months of static storage.

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Abstract

The invention provides a lubricating oil composition and a preparation method thereof. The lubricating oil composition contains a 2,2,4-trialkyl-1,2-dihydroquinoline antioxidant and a metal deactivator. Compared with the traditional lubricating oil containing phenolamine antioxidants, the lubricating oil composition provided by the invention is excellent in antioxidation property, has long service life and the like; and in addition, the preparation method is simple and wide in application scope.

Description

technical field [0001] The present invention relates to a novel lubricating oil composition, more specifically, relates to a novel lubricating oil composition with super oxidation stability comprising at least two components of an antioxidant and a metal deactivator. The invention also relates to a method for preparing the lubricating oil composition. Background technique [0002] All lubricating oils have the property of reacting with oxygen, and after reacting with oxygen, they all show an increase in viscosity, an increase in acid value, a decrease in saturated hydrocarbon content, an increase in polar components, and the formation of oxygen-containing compounds, which increases the average molecular weight of the oil. , Lost the original beneficial properties, so oxidation stability, especially high temperature oxidation resistance is one of the important characteristics of lubricating oil for long-term work. Adding antioxidants to lubricating oil can effectively improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M133/38C10M141/08C10N30/10C10N30/14
Inventor 张连惠范海粉王瑞兴
Owner 埃优诺特种新材料科技(山东)有限公司
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