Ester base oil with copper corrosion inhibition performance

A technology of ester base oil and copper corrosion, applied in the field of ester base oil, can solve the problems of poor solubility, achieve good technical value and application value, enhance copper corrosion inhibition performance, and excellent corrosion inhibition effect

Active Publication Date: 2020-06-26
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of benzotriazole in base oil is poor, and chemical modification is usually required to improve its oil solubility
However, the direct preparation of ester base oils with copper corrosion inhibition based on the synthetic ester skeleton structure by introducing benzotriazole groups has not been reported yet.

Method used

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  • Ester base oil with copper corrosion inhibition performance
  • Ester base oil with copper corrosion inhibition performance
  • Ester base oil with copper corrosion inhibition performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) 5-carboxybenzotriazole, trimethylolpropane, oleic acid are joined in the there-necked flask according to the molar ratio 0.1:1:2.9, add 2wt‰ stannous oxide as catalyst, add 20wt% xylene as With water agent, react at 210°C for 9 hours to obtain ester base oil;

[0023] (2) Add 1 wt% magnesium silicate to the ester base oil, stir at 70° C. for 1 h, then add 2 wt % diatomaceous earth, continue stirring for 1 h, and suction filter to obtain BTMPO base oil.

Embodiment 2

[0025] (1) 5-carboxybenzotriazole, pentaerythritol, and oleic acid are added in a three-necked flask according to a molar ratio of 0.1:1:3.9, 2wt‰ stannous oxide is added as a catalyst, and 20wt% xylene is added as a water-carrying agent, React at 210°C for 9 hours to obtain ester base oil;

[0026] (2) Add 1 wt% magnesium silicate to the crude base oil, stir at 70°C for 1 h, then add 2 wt% diatomaceous earth, continue stirring for 1 h, and suction filter to obtain BPERO base oil.

Embodiment 3

[0028] (1) 5-carboxybenzotriazole, trimethylolpropane, oleic acid are added in the there-necked flask according to the molar ratio of 0.05:1:2, 2wt‰ stannous oxide is added as a catalyst, and 20wt% xylene is added as With water agent, react at 210°C for 9 hours to obtain ester base oil;

[0029] (2) Add 1 wt% magnesium silicate to the crude base oil, stir at 70°C for 1 h, then add 2 wt% diatomaceous earth, continue stirring for 1 h, and suction filter to obtain BTMPO base oil.

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Abstract

The invention relates to ester base oil with copper corrosion inhibition, and a preparation method thereof. According to the ester oil, 5-carboxybenzotriazole with copper corrosion inhibition, oleic acid and part of hydroxyl of trimethylolpropane or pentaerythritol are subjected to esterification to obtain benzotriazole trimethylolpropane oleate (BTMPO) or benzotriazole pentaerythritol oleate (BPERO) with copper corrosion inhibition. According to the invention, the prepared base oil can enhance the copper corrosion inhibition performance of ester base oil, and other copper corrosion inhibitorsdo not need to be added in the using process.

Description

technical field [0001] The invention belongs to the field of lubricating materials, in particular to an ester base oil with copper corrosion inhibiting performance. Background technique [0002] During the use of lubricating oil, the water, acidic substances, original sulfur or sulfides and microorganisms mixed or produced during processing, storage, transportation and use will cause metal corrosion, cause damage to mechanical equipment, and affect oil use. equipment lifespan. Among them, sulfur or sulfide is an important factor that causes copper corrosion. The higher the active sulfur content in lubricating oil, the more serious the copper corrosion. The sulfur element in lubricating oil mainly comes from various sulfur-containing additives, including sulfur-containing antioxidants represented by ZDDP, sulfur-containing detergents such as sulfurized isobutylene, polysulfides, sulfurized alkylphenates, and sulfonates, and Sulfur-containing molybdenum salts and other extre...

Claims

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Application Information

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IPC IPC(8): C07D249/18C10M105/70C10N30/12
CPCC07D249/18C10M105/70C10M2215/223
Inventor 李维民张恩惠王晓波马瑞
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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