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Lithium base grease and preparation method thereof

A lithium-based grease and grease technology, applied in the field of grease, can solve problems such as rare, polluted land, rivers and lakes, and poor biodegradability.

Active Publication Date: 2019-10-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the acute toxicity of lubricating grease to organisms is very small, and there are few related reports of poisoning due to contact with lubricating grease, the lubricating grease entering the environment seriously pollutes land, rivers and lakes due to its poor biodegradability, and lubricating grease is not like lubricating oil. It is relatively easy to recycle, so the study of lubricating grease with biodegradable properties has become a breakthrough to solve ecological and environmental problems
[0003] In recent years, the impact of waste and leaked grease on the environment has attracted widespread attention. To solve this problem, biodegradable vegetable oils and ester synthetic oils are currently used to prepare grease, or vegetable oils and ester oils are used. and polyalpha-olefin mixed oil as base oil to prepare lubricating grease, such as the biodegradable lubricating grease reported by CN 1504552A and CN 103265999A; at present, the lubricating grease with mineral oil or polyalpha-olefin as the main base oil component with degradability There are few research reports

Method used

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  • Lithium base grease and preparation method thereof
  • Lithium base grease and preparation method thereof
  • Lithium base grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, synthesis O-dimethylphosphono-N-dodecanoylserine (see structural formula I-a)

[0043]

[0044] 1) Add L-serine (47.6mmol, 5g), 40mL acetone, 20mL water, sodium hydroxide (95.2mmol, 10g) to the reactor in turn, cool down to 0°C, add lauroyl chloride dropwise (shown in formula II-a ) (47.6 mmol, 10.4 g). After reacting for 5 hours, use 6 mol / L hydrochloric acid solution to acidify to pH 2, a large amount of white solid appears, filter with suction, and wash the filter cake with water and petroleum ether.

[0045] 2) The above white solid (17.4mmol, 5g) was dissolved in 50mL of tetrahydrofuran, triethylamine (34.8mmol, 3.52g) was added, and dimethylphosphonyl chloride (shown in formula III-a) (17.4mmol , 1.96g), after reacting for 12 hours, use 6 mol / L hydrochloric acid solution to acidify to a pH value of 2, a large amount of white solids appear, filter with suction, wash the filter cake with water and petroleum ether, recrystallize from acetone to obta...

Embodiment 2

[0048] Embodiment 2, synthesis O-dimethylphosphono-N-heptadecanoylserine (see structural formula I-b)

[0049]

[0050] 1) Add L-serine (47.6mmol, 5g), 40mL acetone, 20mL water, sodium hydroxide (95.2mmol, 10g) to the reactor in sequence, drop the temperature to 0°C, add stearyl chloride (formula II-b) dropwise Shown) (47.6mmol, 14.4g). After reacting for 5 hours, use 6 mol / L hydrochloric acid solution to acidify to pH 2, a large amount of white solid appears, filter with suction, and wash the filter cake with water and petroleum ether.

[0051] 2) The above white solid (17.4mmol, 6.46g) was dissolved in 50mL of tetrahydrofuran, triethylamine (34.8mmol, 3.52g) was added, and dimethylphosphonyl chloride (shown in formula III-a) (17.4 mmol, 1.96g), after reacting for 12 hours, use 6 mol / L hydrochloric acid solution to acidify to a pH value of 2, a large amount of white solid appears, filter with suction, wash the filter cake with water and petroleum ether, recrystallize from...

Embodiment 3

[0054] Embodiment 3, synthesis O-dimethylphosphono-N-oleoylserine (see structural formula I-c)

[0055]

[0056] 1) Add L-serine (47.6mmol, 5g), 40mL acetone, 20mL water, sodium hydroxide (95.2mmol, 10g) to the reactor in sequence, cool down to 0°C, drop oleoyl chloride (shown in formula II-c) (47.6 mmol, 13.45 g). After reacting for 5 hours, use 6 mol / L hydrochloric acid solution to acidify to pH 2, a large amount of white solid appears, filter with suction, and wash the filter cake with water and petroleum ether.

[0057] 2) The above white solid (17.4mmol, 6.43g) was dissolved in 50mL of tetrahydrofuran, triethylamine (34.8mmol, 3.52g) was added, and dimethylphosphonyl chloride (shown in formula III-a) (17.4 mmol, 1.96g), after reacting for 12 hours, use 6 mol / L hydrochloric acid solution to acidify to a pH value of 2, a large amount of white solid appears, filter with suction, wash the filter cake with water and petroleum ether, recrystallize from acetone to obtain O-d...

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Abstract

The invention provides lithium base grease and a preparation method thereof. The lithium base grease comprises a lubricating base oil, a lithium base thickener and a phosphorous compound, and a structure of the phosphorous compound is described in the specification. The lithium base grease has excellent biodegradability, colloid stability, mechanical stability and oxidation resistance, is suitablefor severe working conditions such as high temperature, high speed, high load, wateriness, and is environmental-friendly.

Description

technical field [0001] The invention relates to a lubricating grease, in particular to a lithium-based lubricating grease with excellent degradation performance. Background technique [0002] Lubricating grease is a necessary working medium in the normal operation of mechanical equipment and in the process of material manufacturing and processing. With the rapid development of industry, the demand for lubricating grease is also increasing. During the storage, transportation and use of lubricating grease, it is inevitable that there will be various environmental pollution such as leakage, overflow and improper discharge. Although the acute toxicity of lubricating grease to organisms is very small, and there are few related reports of poisoning due to contact with lubricating grease, the lubricating grease entering the environment seriously pollutes land, rivers and lakes due to its poor biodegradability, and lubricating grease is not like lubricating oil. It is relatively ea...

Claims

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Application Information

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IPC IPC(8): C10M169/06C07F9/32C10N30/08C10N30/10
CPCC10M169/06C07F9/3258C10M2207/026C10M2207/1285C10M2219/044C10M2219/068C10M2223/06C10M2205/0285C10N2030/10C10N2030/08C10N2030/64C10N2010/02
Inventor 庄敏阳刘欣阳郑会孙洪伟段庆华
Owner CHINA PETROLEUM & CHEM CORP
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