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Isocyanate derivative, preparation method and application thereof, and lubricating grease composition

A technology of isocyanate and diisocyanate, applied in the field of isocyanate derivatives, can solve the problem of low extreme pressure and anti-wear performance

Pending Publication Date: 2022-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional polyurea grease thickener only contains nitrogen, which is not outstanding in terms of extreme pressure and anti-wear properties

Method used

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  • Isocyanate derivative, preparation method and application thereof, and lubricating grease composition
  • Isocyanate derivative, preparation method and application thereof, and lubricating grease composition
  • Isocyanate derivative, preparation method and application thereof, and lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] First, add 10.44g of n-stearyl mercaptan and 0.1g of triethylenediamine into 30g of 500N base oil to dissolve, add 4.56g of MDI into 30g of 500N base oil to dissolve, then slowly add into the base oil in which n-stearyl mercaptan is dissolved, and keep The temperature was stirred at 80° C. for 1 h. Continue to raise the temperature to 185° C., keep it warm for 15 minutes, cool down, and grind to obtain a grease composition. The physical and chemical properties of the resulting grease composition are shown in Table 1.

[0045] Utilize petroleum ether to dissolve the described grease composition, and through ultrasonic dispersion, centrifuge to remove the lubricating oil base oil in the described grease composition, obtain the isocyanate derivative of the present invention, carry out infrared spectrogram test to it, spectrogram sees figure 1 . As can be seen from the figure, the 3300cm -1 The left and right peaks are the stretching vibration absorption peaks of -NH- in...

Embodiment 2

[0047] First add 4.66g of MDI to 30g of 500N base oil to dissolve, add 5.01g of octadecyl primary amine to 15g of 500N base oil to dissolve, and then slowly add it dropwise to the base oil in which MDI is dissolved under sufficient stirring conditions, keeping the temperature Fully stir the reaction at 70°C for 30min, then slowly add dropwise a mixture of 5.33g n-octadecanethiol and 0.1g triethylenediamine dissolved in 15g 500N base oil, keep the temperature at 80°C and stir the reaction for 1h, and continue to heat up to 185° C., heat preservation for 15 minutes, cooling, and grinding to obtain a grease composition. The physical and chemical properties of the resulting grease composition are shown in Table 1.

Embodiment 3

[0049] First add 5.82g MDI to 30g 500N base oil to dissolve, add 2.50g p-toluidine to 15g 500N base oil to dissolve, then slowly add dropwise to the base oil in which MDI is dissolved and keep the temperature at 70°C under sufficient stirring conditions Fully stir the reaction for 30 minutes, then slowly add dropwise a mixture of 6.68g n-octadecylmercaptan and 0.1g triethylenediamine dissolved in 15g 500N base oil, keep the temperature at 80°C and fully stir the reaction for 1h, continue to heat up to 185°C, Insulated for 15 minutes, cooled, and ground to obtain a grease composition. The physical and chemical properties of the resulting grease composition are shown in Table 1.

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PUM

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Abstract

The invention provides an isocyanate derivative as well as a preparation method and application thereof and a lubricating grease composition. The structure of the isocyanate derivative disclosed by the invention is shown as a formula (I), wherein an R group is selected from C1-C30 alkylene groups; the R'group is selected from alkyl of C1 to C30; the A group is selected from a group shown in a formula (II) and a group shown in a formula (III); in the formula (II), R ''groups are selected from alkyl groups, cycloalkyl groups or aryl groups of C1 to C30, R'' groups are selected from alkyl groups, cycloalkyl groups or aryl groups of C1 to C30, and R ''groups are selected from alkyl groups, cycloalkyl groups or aryl groups of C1 to C30; in the formula (III), the R ''group is selected from C1-C30 alkyl, cycloalkyl or aryl. The isocyanate derivative has excellent extreme pressure anti-wear performance and can be used as a thickening agent of a lubricating grease composition or an additive of lubricating grease, the lubricating grease composition prepared by taking the isocyanate derivative as the thickening agent has excellent extreme pressure anti-wear performance, and the service life of lubricating grease can be prolonged.

Description

technical field [0001] The present invention relates to an isocyanate derivative, in particular to an isocyanate derivative suitable for use as a grease thickener. Background technique [0002] Polyurea is a derivative of isocyanate, which is a class of compounds produced by the reaction of isocyanate components and amino compounds. Since the polyurea thickener is different from the metal soap-based thickener, it does not contain metal ions, which avoids the catalytic oxidation of the metal ions in the soap-based thickener to the grease base oil. Therefore, the polyurea grease has good oxidation resistance. Stability and thermal stability, especially suitable for high temperature, high load, wear-resistant lubrication occasions, widely used in electrical, automobile, aircraft and other industries. [0003] Sulfur and nitrogen are active elements in the friction performance of oil products, which can promote the extreme pressure, anti-wear and anti-friction performance of lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C333/08C10M135/18C10M115/10C10M169/00C10M169/02C10M169/04C10M169/06C10N50/10C10N30/06
CPCC07C333/08C10M135/18C10M115/10C10M169/00C10M169/02C10M169/04C10M169/06C07C2601/14C10M2219/06C10M2203/1006
Inventor 李朝宇何懿峰陈靖刘伟郑会刘显秋
Owner CHINA PETROLEUM & CHEM CORP
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