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Base oil and lubricating oil

A technology of base oils and monoalcohols, applied in the field of base oils and lubricating oils containing ester compounds, can solve the problem of high pour point, low base oil extreme pressure, and inability to meet low viscosity, high flash point, low pour point and high pole oil at the same time Problems such as pressure characteristics, to achieve the effect of low viscosity, high flash point

Active Publication Date: 2022-02-18
PATECH FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Japanese Patent Publication No. 6191188B2 discloses a base oil containing an ester compound. The ester compound is obtained from oleic acid and branched tridecyl alcohol. In the base oil of this patent, Since the ester compound is completely made of branched chain alcohols, it has a branched chain structure, which makes it difficult to attach to the surface of the workpiece to form an oil film, that is, the extreme pressure of the aforementioned base oil is low, which does not meet the needs of the current industry.
There are also base oils containing ester compounds made from straight-chain alcohols, but the straight-chain structure of the ester compounds will lead to a high pour point, which also does not meet the needs of the current industry
U.S. Patent Publication No. 2013 / 0324754A1 discloses a base oil containing ester compounds, which can be obtained from fatty acid and at least one linear or branched monoalcohol. However, the patent However, the base oil of the project still cannot meet the requirements of low viscosity, high flash point, low pour point and high extreme pressure characteristics at the same time.

Method used

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  • Base oil and lubricating oil
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Examples

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preparation example Construction

[0053]

[0054]The preparation method of the base oil of the present invention comprises an esterification step. The esterification step is to carry out esterification reaction between the fatty acid component and the unit alcohol component. The detailed description (or reaction conditions) of the fatty acid component, the unit alcohol component and the esterification reaction is the same as the description (or reaction condition) of the fatty acid component, the unit alcohol component and the esterification reaction in the previous .

[0055] Preferably, the preparation method of the present invention also includes a purification step after the esterification reaction. The purification step is to remove water, catalyst and impurities in the product obtained after the esterification reaction.

Embodiment 1

[0058] The base oils of Example 1 and Comparative Examples 1-6 were prepared by the following esterification steps and purification steps respectively.

[0059] Step (1)-esterification step: In the presence of stannous oxalate (catalyst), the fatty acid component and the unit alcohol component are subjected to esterification reaction (reaction temperature is 200-230°C) until the hydroxyl value is below 1mgKOH / g Afterwards, an unpurified base oil is obtained. The specific components of the unit alcohol component and the fatty acid component are arranged in the following table 1, and the ratio of the unit alcohol component and the fatty acid component is based on the hydroxyl value of the unpurified base oil to be obtained Adjust, and the concentration of the stannous oxalate in the reaction is 250-500ppm.

[0060] Table 1

[0061]

[0062]

[0063] More specifically for the unit alcohol component of Example 1 in Table 1 above, the unit alcohol component is composed of t...

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Abstract

A base oil and lubricating oil containing the base oil. The base oil contains an ester compound obtained by reacting a fatty acid component with a monoalcohol component. The fatty acid component includes C 4 ~C 28 Saturated fatty acids and C 4 ~C 28 At least one of unsaturated fatty acids, the unit alcohol component includes at least one C 4 ~C 22 straight chain monoalcohol and at least one C 4 ~C 22 branched chain alcohols. The base oil of the present invention has the properties of low viscosity, high flash point, low pour point and high extreme pressure at the same time.

Description

technical field [0001] The invention relates to an oil product, in particular to a base oil containing an ester compound and a lubricating oil containing the base oil. Background technique [0002] Currently, in order to reduce the viscosity of lubricating oil, the viscosity of the base oil must be reduced first, but the molecular weight of the base oil is directly proportional to the viscosity, that is, the lower the molecular weight, the lower the viscosity, and the low molecular weight base oil will have high volatility. It leads to a decrease in the flash point, so when the molecular weight is reduced in order to reduce the viscosity of the base oil, the working environment will deteriorate due to volatilization, and it will also cause safety hazards due to the decrease in the flash point; in addition, reducing the base oil The molecular weight is also not easy to maintain the oil film thickness of the base oil on the surface of the workpiece, that is, the extreme pressu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/34C10M169/04C10N30/02C10N30/06
CPCC10M105/34C10M169/042C10M2207/2815C10N2020/01C10N2020/02C10N2030/06C10N2020/069C10N2020/071C10M105/12C10M2207/0215C10M2207/103C10N2030/02C10M2207/30C10M105/42C10M2207/28
Inventor 梁帏捷李彦兴唐旭华洪荣宗蔡祯祥
Owner PATECH FINE CHEM
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