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Complex calcium-based lubricating grease and preparing method thereof

A complex calcium-based, 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 calcium-based lubricating grease and preparing method thereof
  • Complex calcium-based lubricating grease and preparing method thereof
  • Complex calcium-based lubricating grease and preparing method thereof

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preparation example Construction

[0134] 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.

[0135]

[0136] 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.

[0137] According to the present invention, in the general formula (X), as the C 1-300Straight 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

[0208] The preparation of shielding phenol compound (structure sees the following formula):

[0209]

[0210] 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.

[0211] The characterization data of this product are as follows:

[0212] 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) ;

[0213] 13 C NMR (75MH...

Embodiment 2

[0220] The preparation of shielding phenol compound (structure sees the following formula):

[0221]

[0222] 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.

[0223] The characterization data of this product are as follows:

[0224] 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);

[0225] 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 a complex calcium-based lubricating grease and a preparing method thereof. The lubricating grease comprises 0.01%-1.0% of hindered phenol compound, 5%-35% of complex calcium-based thickening agent and a main amount of lubricating base oil, wherein the structure of the hindered phenol compound is shown in the specifications. According to the complex calcium-based lubricating grease and the preparing method thereof, the complex calcium-based lubricating grease has a high dropping point, good mechanical stability, excellent heat stability, colloid stability, high-temperature oxygen resistance, anti-corrosion performance, anti-water spraying performance, and anti-extreme pressure performance, hardening conditions of the complex calcium-based lubricating grease are improved to some extent, thus the complex calcium-based lubricating grease is capable of being qualified in lubrication of various kinds of motors, electric generators, air blowers, transportation industries, iron and steel enterprises and other various kinds of commercial units, and is especially applicable to lubrication of friction parts of various kinds of mechanical equipment under high-temperature and moist conditions.

Description

technical field [0001] The invention relates to a lubricating grease, in particular to a complex calcium-based lubricating grease. Background technique [0002] Complex calcium-based grease is the earliest complex soap-based grease developed. It is made of complex calcium soap made of fatty acid calcium soap and low-molecular acid calcium salt thickened with medium-viscosity mineral lubricating oil or synthetic lubricating oil. The lubricating grease product has a wide temperature range and is a kind of lubricating grease with a wide range of uses. However, due to the hardening problem of complex calcium-based grease during storage and use, its promotion and application are greatly limited. [0003] In recent years, in order to improve the performance of complex calcium-based grease, there are improvements in formula and manufacturing process, such as CN 1888036A and CN 101935573A through the adjustment of the selection and ratio of small molecule acids and long-chain organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M159/12C10M135/30C10M135/36C10N50/10C10N30/06C10N30/08C10N30/10C10N30/12
Inventor 郑会苏朔龙军段庆华孙洪伟何懿峰陈政武志强刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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