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Dithioamino acid triazine derivative as additive for antioxidizing extreme pressure lubricating oil

A technology for lubricating oil additives and arginine triazine, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of harsh synthesis process conditions, poor extreme pressure anti-oxidation performance, high production cost, etc., and achieve excellent extreme Anti-oxidation properties, low synthesis cost, and mild process conditions

Inactive Publication Date: 2002-07-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Studies have shown that some derivatives containing arginine functional groups {such as: MoDTC, (BMDTC)} has good oxidation resistance, extreme pressure resistance, and wear resistance, but because MoDTC contains metal molybdenum; the synthesis process conditions of DBTC are relatively harsh, and the extreme pressure oxidation resistance is not good; Although BMDTC with azole functional group has good extreme pressure, anti-wear and anti-oxidation properties, its production cost is high, which affects its application

Method used

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  • Dithioamino acid triazine derivative as additive for antioxidizing extreme pressure lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 16.12g (10% excess) sodium diethylamine thioformate and 50ml tetrahydrofuran, add them into a 250ml three-necked flask equipped with a thermometer, a stirring device, and a reflux condenser, and stir for 0.5hrs. Then weigh 4.0 g of cyanuric chloride and dissolve it with 50 ml of tetrahydrofuran. Then, under stirring, the tetrahydrofuran solution of cyanuric chloride was slowly added into the three-necked flask, the temperature was controlled at about 10°C, and the reaction was performed at a constant temperature for 2hrs. Then the temperature was slowly raised to reflux temperature, and the reaction was carried out at reflux for 3hrs. After the reaction was complete, the solution was concentrated. Then extract with benzene, wash with water several times at the same time, then dry overnight with anhydrous magnesium sulfate, after filtration, the filtrate is concentrated under reduced pressure to obtain crude product crystals, and the crude product is recrystallize...

Embodiment 2

[0020] Weigh 0.132mol (10% excess) dibutylamine sodium thioformate and 100ml acetone, add them into a 250ml three-necked flask equipped with a thermometer, a stirring device, and a reflux condenser, and stir for 0.5hrs. Then weigh 0.04mol of cyanuric chloride and dissolve it with 50ml of acetone. Then, under stirring, the acetone solution of cyanuric chloride was slowly added into the three-necked flask, the temperature was controlled at about 10°C, and the reaction was performed at a constant temperature for 3hrs. Then slowly heat up to reflux temperature, reflux reaction 3.5hrs. After the reaction was complete, the solution was concentrated. Then extract with benzene, wash with water several times at the same time, then dry overnight with anhydrous magnesium sulfate, filter, the filtrate is evaporated under reduced pressure to remove the solvent benzene, and obtain the brownish yellow crude product, and the pure compound can be obtained through the column: 2,6-bis( N,N-dib...

Embodiment 3

[0022] Weigh 0.132mol (10% excess) dioctylamine sodium thioformate and 100ml acetone, add them into a 250ml three-necked flask equipped with a thermometer, a stirring device, and a reflux condenser, and stir for 0.5hrs. Then weigh 0.04mol of cyanuric chloride and dissolve it with 50ml of acetone. Then, under stirring, the acetone solution of cyanuric chloride was slowly added into the three-necked flask, the temperature was controlled at about 10°C, and the reaction was performed at a constant temperature for 3hrs. Then slowly heat up to reflux temperature, reflux reaction 3.5hrs. After the reaction was complete, the solution was concentrated. Then extract with benzene, wash with water several times at the same time, then dry overnight with anhydrous magnesium sulfate, filter, the filtrate is evaporated under reduced pressure to remove the solvent benzene, and obtain the brownish yellow crude product, and the pure compound can be obtained through the column: 2,6-bis( N,N-dio...

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Abstract

A dithioamino acid triazine derivative as the additive of antioxidizing extreme-pressure lubricating oil is prepared by the reaction of dialkyl bithioaminoformate and tripolychlorocyanogen. Its advnatages include gentle reaction condition and high antioxidizing performance.

Description

Technical field: [0001] The invention relates to an extreme pressure anti-oxidation lubricating oil additive of arginine triazine derivatives. The arginine triazine derivatives synthesized by a new method are used as lubricating oil (grease) additives and have excellent extreme pressure anti-oxidation properties . Background technique: [0002] As we all know, zinc dialkyldithiophosphate (ZDDP) is a commonly used and very effective multi-functional lubricant and grease additive, but because the zinc element in ZDDP is prone to galvanic corrosion, and the phosphorus element in ZDDP is easy to make Catalyst poisoning in automobile exhaust treatment devices. Therefore, in recent years, the search for "phosphorus-free" and "zinc-free" high-efficiency multifunctional lubricant additives that can replace ZDDP has become a current hot research topic. [0003] Studies have shown that some derivatives containing arginine functional groups {such as: MoDTC, (BMDTC)} has good oxidati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/28
Inventor 任天辉詹威强季久盛
Owner SHANGHAI JIAO TONG UNIV
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