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Extreme pressure anti-corrosion addictive of benzo triazole polysulfide and method for preparing the same

A benzotriazole and benzotriazole-based technology, which is applied in the field of organic compounds and their preparation, can solve problems such as catalyst poisoning and limited lubricating oil solubility, and achieve mild synthesis process conditions, excellent extreme pressure and resistance Corrosion performance, effect of improving corrosion performance

Active Publication Date: 2006-09-27
东莞太平洋博高润滑油有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US2002 / 0058594 A1 discloses a dimer of thiadiazole used as a lubricating oil additive, which has a high load-carrying capacity, but has limited solubility in lubricating oil
US4626368 has described a kind of product that phosphite, aldehyde, benzotriazole reaction obtains, has good high-temperature anti-wear performance and load-carrying strength equally, but phosphorus element easily makes the catalyst poisoning in the automobile tail gas treatment device, therefore is subjected to limit

Method used

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  • Extreme pressure anti-corrosion addictive of benzo triazole polysulfide and method for preparing the same
  • Extreme pressure anti-corrosion addictive of benzo triazole polysulfide and method for preparing the same
  • Extreme pressure anti-corrosion addictive of benzo triazole polysulfide and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 0.1 mol of 1-chloro-n-butylbenzotriazole and 100 ml of tetrahydrofuran into a three-necked flask equipped with a thermometer, a stirring device, and a reflux condenser, and stir for 1 hour. Then weigh 0.055 mol of 35 wt% sodium trisulfide aqueous solution and slowly drop it into a three-necked flask, react at 50° C. for 5 hours, then cool to room temperature and stir for 7 hours. After the reaction, the generated salt was removed by suction filtration, the filtrate was concentrated, dissolved in ethyl acetate, washed with water three times, and then dried with anhydrous magnesium sulfate. After filtration, the filtrate was evaporated to remove the solvent under reduced pressure to obtain 16.67 g of two 1-(benzotriazolyl-1-n-butyl) polysulfides of brownish-yellow viscous oil, with a yield of 75.2% (based on 1-chloro n-butylbenzotriazole as a benchmark).

[0028] figure 1 It is the infrared (IR) spectrum of two 1-(benzotriazolyl-1-n-butyl) polysulfides, as can be ...

Embodiment 2

[0032] Weigh 0.1 mol of 1-chloro-n-heptylbenzotriazole and 120 milliliters of ethanol into a three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, and stir for 1 hour. Then weigh 0.05 mol of 30 wt% ammonium trisulfide aqueous solution and slowly drop it into the three-necked flask, react at 70° C. for 7 hours, then cool to room temperature and stir for 5 hours. After the reaction, the generated salt was removed by suction filtration, the filtrate was concentrated, dissolved in ethyl acetate, washed with water three times, and then dried with anhydrous magnesium sulfate. After filtration, the filtrate was evaporated to remove the solvent under reduced pressure, and 19.02 g of double 1-(benzotriazolyl-1-n-heptyl) polysulfide of brown-yellow viscous oil was obtained, with a yield of 72.3% (based on 1-chloro based on n-heptylbenzotriazole).

[0033] The product that obtains in the above-mentioned example, C, H, N, S elemental analysis result is...

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Abstract

The invention discloses an extreme-pressure anticorrosive additive and preparing method of benzo ribavirin polysulfide, whose chemical name is which is characterized by the following: adapting 1-chloride benzo ribavirin and alkali metal polysulfide to do chemical reaction at mild technological condition; obtaining benzo ribavirin polysulfide as lubricating grease extreme pressure, anticorrosive additive or with other composite lubricating grease.

Description

Technical field: [0001] The invention relates to an organic compound and a preparation method thereof, in particular to a benzotriazole polysulfide and a preparation method thereof, which is used as an extreme-pressure anti-corrosion additive for lubricating grease. Background technique: [0002] Sulfur-based additives are the earliest and most effective extreme pressure additives for lubricating oils. Among them, sulfurized isobutylene, phosphorothioate and polysulfides are the most widely used sulfur-based additives. US4204969 describes a sulfurized isobutylene prepared by reacting sulfur monochloride and isobutylene as an extreme pressure additive for lubricating oil. US5324440 discloses a polysulfide synthesized by using an alkaline surfactant and a boron-containing derivative as an extreme-pressure anti-wear additive for lubricating grease. The synthesis method is relatively complicated, and the polysulfide additive is corrosive. [0003] Nitrogen-containing heterocyc...

Claims

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Application Information

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IPC IPC(8): C10M133/44C10N30/06
Inventor 易红玲曾祥琼吴华韩生任天辉
Owner 东莞太平洋博高润滑油有限公司
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