Non-sulfur and non-phosphorus organic molybdenum compound and preparation method and application thereof

An organic molybdenum and compound technology, applied in the field of non-sulfur-phosphorus organic molybdenum lubricating oil additives, can solve the problems of unfavorable large-scale application, good anti-friction and anti-wear performance, increase product cost, etc. Anti-wear properties, the effect of reducing the effect of use

Inactive Publication Date: 2015-08-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two kinds of organic molybdenum can make the lubricating parts form a protective film with wear-reducing and anti-wear effects on the friction surface, which greatly improves the tribological performance, but these two kinds of organic molybdenum wear-reducing and anti-wear agents have defects
[0004] Molybdenum dialkyldithiophosphate (MoDDP), studies have proved that it has very outstanding wear-reducing and anti-wear properties, but this type of compound contains phosphorus, which will produce a large amount of harmful substances during production and use
Molybdenum dialkyl dithiocarbamate (MoDTC), although it does not contain phosphorus, it will be decomposed by heat during use to generate free amine and CS2, these two products will corrode the copper of the engine bearing
This method requires a variety of raw material components to increase the product cost, and the process is relatively complicated, which is not conducive to large-scale application
[0006] In addition to the above-mentioned defects, there are currently many methods for preparing organic molybdenum on the market. Various preparation processes and raw material selection are uneven, and none of them can simultaneously take into account "environmental protection, good anti-friction and anti-wear performance, simple preparation process, low wood yield, and high temperature." Good oxidation resistance and many other advantages, poor comprehensive performance, limited application range

Method used

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  • Non-sulfur and non-phosphorus organic molybdenum compound and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Preparation of N-octadecyliminediethanol molybdic acid diester

[0038] Weigh 53.6 g (0.15 mol) of dihydroxyethyl octadecylamine and directly add it into a 500 ml three-necked flask, then add 0.3 g (0.0075 mol) of sodium hydroxide and 300 ml of xylene solvent into the flask. Weigh 26.0 g (0.15 mol) of ammonium molybdate tetrahydrate, dissolve it in 40 g of deionized water, use an ultrasonic cleaner to accelerate the dissolution, pour it into a water separator, and gradually add it to a three-necked flask during the reaction. Heating in an oil bath at 170°C, mechanical stirring, and reflux of xylene to gradually separate the product from water. The reaction was carried out for 6-7 hours, and the reaction was completed when no water was evaporated. The reaction product is a dark green solution. After the reaction was completed, suction filtration was carried out while it was still hot. After separation, the filtrate was dark green, and the filter paper was ...

Embodiment 2

[0043] Example 2 Preparation of N-butyliminediethanol molybdic acid diester

[0044] Weigh 24.2g (0.15mol) of dihydroxyethylbutylamine and directly add it into a 500ml three-necked flask, then add 0.3g (0.0075mol) of sodium hydroxide and 300ml of xylene solvent into the flask. Weigh 26.0 g (0.15 mol) of ammonium molybdate tetrahydrate, dissolve it in 40 g of deionized water, use an ultrasonic cleaner to accelerate the dissolution, pour it into a water separator, and gradually add it to a three-necked flask during the reaction. Heating in an oil bath at 170°C, mechanical stirring, and reflux of xylene to gradually separate the product from water. The reaction was carried out for 6-7 hours, and the reaction was completed when no water was evaporated. After the reaction finished, the follow-up treatment was the same as in Example 1.

Embodiment 3

[0045] Example 3 Preparation of N-isooctyliminediethanol molybdic acid diester

[0046] Weigh 19.3g (0.1mol) of brominated isooctane, 10.5g (0.1mol) of diethanolamine, and 12.6g (0.15mol) of bicarbonate sodium bicarbonate into a 500ml three-necked flask, heat in an oil bath, stir mechanically, and reflux the toluene . After the reaction, it was distilled with ethyl acetate, washed with water, and finally put into a vacuum drying oven to obtain dihydroxyethylisooctylamine.

[0047] Then weigh 21.7g (0.1mol) of dihydroxyethylisooctylamine and directly add it into a 500ml three-necked flask, then add 0.3g (0.0075mol) of sodium hydroxide and 300ml of xylene solvent into the flask. Weigh 26.0 g (0.15 mol) of ammonium molybdate tetrahydrate, dissolve it in 40 g of deionized water, use an ultrasonic cleaner to accelerate the dissolution, pour it into a water separator, and gradually add it to a three-necked flask during the reaction. Heating in an oil bath at 170°C, mechanical st...

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Abstract

The invention provides a non-sulfur and non-phosphorus organic molybdenum compound and preparation method and application thereof. The structural formula is shown in the formula, wherein R is a C1-C30 linear or branched alkyl or cycloalkyl. The preparation method comprises the step of reacting hydroxyalkyl amine with ammonium molybdate tetrahydrate in the presence of an organic solvent and a catalyst. The organic molybdenum compound provided by the present invention can be used as a lubricating oil additive and has good antiwear and extreme-pressure properties.

Description

technical field [0001] The invention relates to a non-sulfur phosphorus organic molybdenum lubricating oil additive, its preparation method and its application in lubricating oil agents. Background technique [0002] As we all know, dialkylzinc dithioester (ZDDP) is a commonly used and effective multi-functional lubricant additive, however, ZDDP contains zinc element that causes electrochemical corrosion and produces metal ash and is easy to make the The phosphorus element poisoned by the catalyst will bring problems such as toxicity, water treatment and environmental pollution. The development of new extreme pressure and anti-wear additives has become a research hotspot at home and abroad. [0003] Because of its high melting point, high strength, corrosion resistance, wear resistance and other advantages, molybdenum metal is widely used in industry. Organic molybdenum compounds have good development prospects in the field of tribology. They can be used as friction modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F11/00C10M139/00C10N30/06
CPCC07F11/005C10M139/00C10N2030/06
Inventor 龚民李志鹏李建昌张刚强范冰极任天辉
Owner SHANGHAI JIAO TONG UNIV
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