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

A technology of isocyanate and derivatives, applied in lubricating compositions, thickeners, organic chemistry, etc., can solve problems such as improving the performance of lubricating grease compositions

Pending Publication Date: 2022-07-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reports in the prior art mainly focus on improving the formula of polyurea grease, and improve the performance of the grease composition by improving base oil, additives, etc., and do not improve the performance of the grease composition from the thickener structure itself. performance

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

[0098]Mix 4g n-butylamine, 4.38g sodium hydroxide solution with a mass concentration of 50%, 5g toluene and 5g isopropanol, slowly add 4.16g carbon disulfide dropwise within 1h, control the temperature at 30°C, then heat up to 65°C, slowly 2.33 g of dichloromethane was added, and the temperature was controlled at 60-65° C. to react for 2 h, then repeatedly washed with water, heated under reduced pressure to remove water and solvent, and filtered to remove sodium chloride to obtain 8.49 g of butyl dithiocarbamate for use.

[0099] Add 8.49g butyl dithiocarbamate to 30g 500N base oil, add 6.51g phenyl isocyanate to 30g 500N base oil to dissolve, slowly add to the butyl dithiocarbamate and 500N base oil. In the base oil mixture, the temperature was kept at 80 °C and the reaction was fully stirred for 1 h. Continue to heat up to 185° C., refine at a constant temperature for 15 minutes, cool and grind to obtain a grease composition.

[0100] The equation of the main reaction in th...

Embodiment 2

[0104] Mix 3.56g n-butylamine, 3.90g sodium hydroxide solution with a mass concentration of 50%, 5g toluene and 5g isopropanol, slowly add 3.71g carbon disulfide dropwise within 1h, control the temperature at 30°C, and then heat up to 65°C, 2.07g of dichloromethane was slowly added, the temperature was controlled at 60-65°C and the reaction was performed for 2h, then repeatedly washed with water, heated under reduced pressure to remove water and solvent, and filtered to remove sodium chloride to obtain 7.55g of butyldithiocarbamate for use.

[0105] Add 7.55g butyl dithiocarbamate to 30g 500N base oil, add 7.45g p-chlorophenyl isocyanate to 30g 500N base oil to dissolve, then slowly add to the butyl dithiocarbamate In the mixture with 500N base oil, the temperature was kept at 80°C and the reaction was fully stirred for 1h. Continue to heat up to 185° C., keep the temperature for 15 minutes, cool and grind to obtain a grease composition.

[0106] The equation of the main reac...

Embodiment 3

[0109] Mix 7.40g octadecyl primary amine, 2.20g sodium hydroxide solution with a mass concentration of 50%, 5g toluene, and 5g isopropanol, slowly add 2.09g carbon disulfide dropwise within 1h, control the temperature at 30°C, and then heat up to 65°C, slowly add 1.17g of dichloromethane, control the temperature at 60-65°C and react for 2 hours, then repeatedly wash with water, heat under reduced pressure to remove water and solvent, and filter to remove sodium chloride to obtain 9.66g of octadecyldithioamino Formate reserve.

[0110] Add 9.66g of octadecyl dithiocarbamate to 30g of 500N base oil, add 5.34g of phenyl isocyanate to 30g of 500N base oil to dissolve, then slowly add to the octadecyl dithiocarbamate In the mixture of acid ester and 500N base oil, the temperature was kept at 80 °C and the reaction was fully stirred for 1 h. Continue to heat up to 185° C., keep the temperature for 15 minutes, cool and grind to obtain a grease composition.

[0111] The equation of ...

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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 the definition of each group is shown in the specification. 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 or the additive 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 formed by the reaction of isocyanate components with 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 effect of the metal ions in the soap-based thickener on the grease base oil. Therefore, the polyurea grease has good oxidation Stability and thermal stability, especially suitable for high temperature, high load, wear-resistant lubrication occasions, widely used in electrical, automotive, aircraft and other industries. [0003] Sulfur and nitrogen are active elements in the friction properties of oil products, and play a role in improving the extreme pressure and anti-wear and anti-friction properties...

Claims

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Application Information

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IPC IPC(8): C07C333/26C10M119/26C10N30/06C10N30/12
CPCC07C333/26C10M119/26C10M2219/066
Inventor 李朝宇何懿峰魏克成
Owner CHINA PETROLEUM & CHEM CORP
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