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Complex lithium-calcium-based lubricating grease and preparation method thereof

A lithium-calcium complex, grease technology, applied in the field of grease

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing antioxidants still have room for improvement in high temperature oxidation resistance

Method used

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  • Complex lithium-calcium-based lubricating grease and preparation method thereof
  • Complex lithium-calcium-based lubricating grease and preparation method thereof
  • Complex lithium-calcium-based lubricating grease and preparation method thereof

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preparation example Construction

[0136]The preparation method according to the present invention comprises the first step of reacting the phenol compound represented by the general formula (X) and the amine compound represented by the general formula (Y) in the presence of the aldehyde compound represented by the general formula (Z). step.

[0137]

[0138] According to the present invention, in the general formula (X), when there are multiple groups, each group R 0 The same or different from each other, each independently selected from hydrogen, -SH and C 1-300 Straight or branched chain alkyl, provided that at least one group R 0 Yes-SH.

[0139] According to the present invention, in the general formula (X), as the C 1-300 Straight chain or branched chain alkyl, such as C 1-20 Straight chain or branched chain alkyl (preferably C 1-10 Straight chain or branched chain alkyl, more preferably C 1-4 straight-chain or branched-chain alkyl) or polyolefin-based. Specific examples of the polyolefin group ...

Embodiment 1

[0210] The preparation of shielding phenol compound (structure sees the following formula):

[0211]

[0212] Under nitrogen protection atmosphere, in the 250ml four-neck flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, add 31.65 grams (133mmol) 2,6-di-tert-butyl-4-mercaptophenol, 1.86 grams (62mmol ) formaldehyde, 28.15 grams (153 mmol) of N-phenyl-p-phenylenediamine, 0.75 grams (7.5 mmol) of hydrochloric acid and 150 mL of isopropanol, stirred rapidly, and reacted at 25 ° C for 24 h. After the reaction was finished, the solvent and the generated small amount of water were distilled off under reduced pressure, and separated by column chromatography to obtain the masked phenol product with the above structure.

[0213] The characterization data of this product are as follows:

[0214] 1 H NMR (300MHz, CDCl 3 ): δ1.36-1.54(18H), 3.75(1H), 4.80(2H), 5.32(1H), 6.80(2H), 6.97(5H), 7.17(2H), 7.26(2H), 7.55(1H) ;

[0215] 13 C NMR (75MH...

Embodiment 2

[0222] The preparation of shielding phenol compound (structure sees the following formula):

[0223]

[0224] Under a nitrogen protection atmosphere, in a 250ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel, add 8.57 grams (36mmol) of 2,6-di-tert-butyl-4-mercaptophenol, 0.45 grams (15mmol ) formaldehyde, 10.14 g (39 mmol) of N,N'-diphenyl-1,4-phenylenediamine and 150 mL of toluene, stirred rapidly, and reacted at 90° C. for 4 h. After the reaction was finished, the solvent and the generated small amount of water were distilled off under reduced pressure, and separated by column chromatography to obtain the masked phenol product with the above structure.

[0225] The characterization data of this product are as follows:

[0226] 1 H NMR (300MHz, CDCl 3 ): δ1.36(18H), 5.23(2H), 6.80-7.02(10H), 7.17(2H), 7.26(4H), 7.55(1H);

[0227] 13 C NMR (75MHz, CDCl 3 ): δ29.6, 34.6, 55.2, 117.1, 121.8, 126.2, 129.5, 136.6, 143.6, 153.4;...

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Abstract

The invention provides complex lithium-calcium-based lubricating grease. The lubricating grease is prepared from components in terms of the total weight of lubricating grease as follows: 0.01%-10% of a shielding phenol compound, 5%-35% of a complex lithium-calcium-based thickening agent and a major amount of lubricating base oil; the structure of the shielding phenol compound is shown in the specification. The complex lithium-calcium-based lubricating grease has high dropping point, good mechanical stability, high-temperature reversibility, pumpability, excellent thermal stability, colloid stability, high-temperature oxidation resistance, antirust performance, water spraying resistance and extreme pressure property, has good compatibility with other lubricating grease, can be qualified for lubrication of various motors, generators, air blowers, transportation industry, iron and steel enterprises and other industrial equipment and is particularly applicable to lubrication of friction parts of mechanical equipment under higher temperature and humid conditions.

Description

technical field [0001] The invention relates to a lubricating grease, in particular to a complex lithium-calcium-based lubricating grease. Background technique [0002] Different metals give grease different properties. In recent years, with the development of modern industry, industrial sectors such as bearings, automobiles, printing and dyeing, mining, metallurgy, and aerospace have put forward proposals on the oxidation resistance, high and low temperature resistance, extreme pressure and wear resistance, water resistance, and mechanical stability of lubricating greases. In order to meet more and more stringent requirements, complex thickener grease has been greatly developed. Therefore, there are a large number of literatures on the performance of lithium-calcium complex greases. [0003] CN 85108442A has reported " binary metal soap lubricating grease composition and its preparation method ", adopts two-step method to prepare complex lithium calcium base lubricating g...

Claims

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Application Information

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IPC IPC(8): C10M135/30C10M135/36C10M169/00C10M177/00C07C323/25C07C319/14C07D279/20C07D221/08C07D513/04C10N30/06C10N30/12C10N30/10C10N50/10
Inventor 苏朔龙军郑会潘卓孙洪伟段庆华何懿峰陈政武志强刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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