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Synthetic plant type hydraulic oil

A plant-based, hydraulic oil technology, applied in the field of hydraulic oil, can solve the problems of high iodine value, poor low temperature performance, poor oxidation stability, etc.

Inactive Publication Date: 2020-01-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its own high content of unsaturated acid, large iodine value, poor oxidation stability, high freezing point, poor low temperature performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix n-decanoic acid, n-octadecanoic acid, oleic acid, linoleic acid, linolenic acid, monopentaerythritol and sodium bisulfate to obtain the first mixture, and put the first mixture into the reaction kettle at 220°C with a vacuum of -0.07 The esterification reaction under MPa is 14-18 hours, and the esterification product is obtained; wherein, the molar ratio of n-decanoic acid, n-octadecanoic acid, oleic acid, linoleic acid, linolenic acid and monopentaerythritol is 1.1:2.9:0.7:0.3:0.2 : 1, the mass fraction of sodium bisulfate in the first mixture obtained by mixing is 0.1%.

[0048] The additives sulfurized neopentyl glycol dioleate, 2,6-di-tert-butyl-p-cresol, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester and Benzotriazole is mixed with the esterification product obtained from the esterification reaction at a weight ratio of 1:1:1:0.1 to obtain a second mixture, and the second mixture is adjusted at 100-120°C and a vacuum of -0.094M...

Embodiment 2

[0051] Mix n-tetradecanoic acid, n-octadecanoic acid, oleic acid, linoleic acid, linolenic acid, trimethylolpropane and sodium bisulfate to obtain the first mixture, and put the first mixture into the reaction kettle, at 190°C, vacuum The esterification reaction is carried out at -0.06MPa for 10-15 hours to obtain the esterified product; wherein, the molar ratio of n-tetradecanoic acid, n-octadecanoic acid, oleic acid, linoleic acid, linolenic acid and trimethylolpropane is 0.5 : 1.5: 1.6: 0.3: 0.1: 1, the mass fraction of sodium bisulfate in the first mixture obtained by mixing is 0.1%.

[0052] The additives acyl polysulfide, 2,6-di-tert-butyl-p-cresol, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester and thiadiazole derivative According to the weight ratio of 1:1:2:0.1, it is mixed with the esterification product obtained from the esterification reaction to obtain the second mixture, and the second mixture is adjusted and reacted at 100-120°C...

Embodiment 3

[0055] Mix capric acid isomers, oleic acid, linoleic acid, linolenic acid, glycerin and stannous oxalate to obtain the first mixture, put the first mixture into the reaction kettle, and esterify at 185°C with a vacuum of -0.06MPa React for 12-16 hours to obtain an esterification product; wherein, the molar ratio of capric acid isomers, oleic acid, linoleic acid, linolenic acid and glycerin is 0.7:2.6:0.2:0.1:1, and the mixture of stannous oxalate The mass fraction in the first mixture is 0.15%.

[0056] The additives acyl polysulfide, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester, diisooctyl dianiline polymer and benzotriazole polymer The mixture is mixed with the esterification product obtained from the esterification reaction at a weight ratio of 2:3:4:0.1 to obtain the second mixture, and the second mixture is adjusted and reacted at 100-120°C with a vacuum of -0.094MPa for 2-4h , to obtain a synthetic plant-based biodegradable hydraulic ...

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Abstract

The invention provides synthetic plant type hydraulic oil. The synthetic plant type hydraulic oil is prepared through the following steps: A) subjecting mixed straight-chain fatty acid, polyhydric alcohol and a catalyst to mixing and then to an esterification reaction to obtain an esterification product, wherein the mixed straight-chain fatty acid is one or more selected from the group consistingof n-decanoic acid and isomerides thereof, n-tetradecanoic acid, n-hexadecanoic acid, n-octadecanoic acid, oleic acid, linoleic acid and linolenic acid, the polyhydric alcohol is one or more selectedfrom the group consisting of monopentaerythritol, dipentaerythritol, glycerol, neopentyl glycol and trimethylolpropane, and a mass ratio of the mixed straight-chain fatty acid to the polyhydric alcohol is (2-6): 1; and B) mixing the esterification product, an extreme-pressure anti-wear agent, an antioxidant and a metal deactivator, and carrying out blending to obtain the synthetic plant type hydraulic oil, wherein the antioxidant is one or more selected from the group consisting of butylated hydroxytoluene, tetra(beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid)pentaerythritol ester anda diisooctyl diphenylamine polymer.

Description

technical field [0001] The invention belongs to the technical field of hydraulic oil, in particular to a synthetic vegetable hydraulic oil. Background technique [0002] The environment is the basis for the survival of human beings and other lives. With the increasing awareness of environmental protection, the pollution and damage of hydraulic oil to the environment has attracted the attention of various countries. Therefore, the development of biodegradable hydraulic oil has received great attention. Biodegradable hydraulic oil is also known as environmentally friendly hydraulic oil, which means that the oil must meet the performance requirements of the hydraulic system, and its own and the consumption products have ecological effects, including: biodegradability, ecotoxicity, regeneration, etc. . [0003] In Europe and North America, the research and application of biodegradable hydraulic oils began to be vigorously promoted more than 20 years ago, especially in Northern...

Claims

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Application Information

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IPC IPC(8): C10M105/38C10M169/04C10N40/08C10N30/08C10N30/10
CPCC10M105/38C10M169/04C10M169/045C10M2207/026C10M2207/283C10M2207/2835C10M2215/064C10M2215/223C10M2219/024C10M2219/08
Inventor 汤倩云刘月皞康涛赵玉贞马楷
Owner CHINA PETROLEUM & CHEM CORP
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