Lubricating oil and grease base oil, and preparation method and applications thereof

A base oil and fatty acid technology, applied in lubricating compositions, base materials, petroleum industry, etc., can solve problems such as viscosity, pour point, and flash point that cannot meet the requirements, and achieve high viscosity index, high flash point, and biodegradation high rate effect

Active Publication Date: 2013-05-01
上海海都化学科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies of the prior art above, and provide a lubricating oil and grease base oil to solve the technical problem that the existing base oil cannot meet the requirements in viscosity, pour point and flash point

Method used

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  • Lubricating oil and grease base oil, and preparation method and applications thereof
  • Lubricating oil and grease base oil, and preparation method and applications thereof
  • Lubricating oil and grease base oil, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The preparation of embodiment 1 base oil

[0079] The preparation process is as follows:

[0080] 1. Select two dibasic acids with carbon numbers of 5 to 12, and add a mixed alcohol consisting of neopentyl glycol, trimethylolpropane and neopentylthritol in an amount twice the amount of the dibasic acid, and then The amount of substances added is 0.95-1.05% tetraoctyl zirconate of the mixed dibasic acid and 1.9-2.1% p-toluenesulfonic acid as a catalyst, and the reaction is stirred at a temperature of 160-180°C for 140-180 minutes to complete the first step. One-step esterification reaction.

[0081] 2. The amount of the added substance is more than 4 times of the mixed dibasic acid, the monobasic fatty acid with the carbon number of 14 to 20, (the monobasic fatty acid should be in excess, so that the second step of the esterification reaction is complete), at a temperature of 200 ~ 220 ° C Stir the reaction for 100 to 120 minutes to complete the second step of the este...

Embodiment 2

[0093] The preparation of embodiment 2 antioxidant

[0094] Antioxidant was prepared according to the formula in parts by weight in Table 3.

[0095] Preparation method: Mix the raw materials evenly according to the proportion.

[0096] table 3

[0097]

[0098] The structural formula of thiocarbamate in table 3 is (C 4 h 9 ) 2 NCS 2 CS 2 CN(C 4 h 9 ) 2 .

Embodiment 3

[0099] The performance of embodiment 3 antioxidants

[0100] The 4# formulation base oil in Example 1 was used to mix with various antioxidants in the following table, wherein the base oil accounted for 98wt%, and the total amount of antioxidants accounted for 2wt%. Mix the raw materials according to the ratio and stir evenly.

[0101] Table 4

[0102]

[0103] Note: the total amount of antioxidants is 2.0%, wherein, the structural formula of thiocarbamate is (C 4 h 9 ) 2 NCS 2 CS 2 CN(C 4 h 9 ) 2 .

[0104] As can be seen from the data in Table 4, the present invention selects the antioxidant compound compounded by diisooctyl diphenylamine, phenyl-α-naphthylamine, 2,6 di-tert-butylphenol and thiocarbamate. It achieves the complementary performance advantages of various antioxidants and greatly improves the long-term high-temperature anti-oxidation stability of oil products.

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Abstract

The invention provides base oil, in particular to a neopentyl polyalcohol dibasic acid complex ester. The neopentyl polyalcohol dibasic acid complex ester is prepared in a way that: completely esterifying C5-12 binary fatty acid carboxyl with the mixture of neopentyl glycol, trimethylolpropane and pentaerythritol, and blocking with C14-20 unsaturated monobasic fatty acid. The base oil provided bythe invention has the characteristics of high flash point, high flammability point, low pour point, high viscosity index, low evaporation loss, high thermal oxidation stability and high biodegradation rate. The invention can be used as syntholube and grease base oil, especially syntholube base oil used under the conditions of high temperature and high pressure. The invention is especially suitable to be used in fire resistant hydraulic fluid, high-temperature chain oil, high-temperature grease and the like in severe working spaces at which naked flame can is accessible under the conditions ofhigh temperature and high pressure.

Description

technical field [0001] The invention relates to a lubricating oil and a lubricating grease base oil and a preparation method and application thereof, in particular to the preparation and application of a hydraulic oil base oil, and belongs to the technical field of industrial lubricating oil. Background technique [0002] Hydraulic machinery has been widely used in industries such as iron and steel, electric power, coal and machinery. As a power medium, hydraulic oil is the key material of hydraulic transmission technology, and it is also one of the three important oil products with the largest consumption of industrial lubricating oil. With the continuous development of modern hydraulic technology, some hydraulic systems often work under high pressure and high temperature conditions. More stringent requirements are placed on the flame resistance of the hydraulic oil used. Before the 1970s, countries devoted themselves to the development of water-containing emulsions (W / O ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/42C10M169/04C10N40/08C10N40/32C10N50/10C10N30/08
Inventor 王鹏汪宪臣姜作泰
Owner 上海海都化学科技有限公司
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