Method for preparing silicon-based biolubricant base oil from organosilicon modified fatty acid ester

A technology of lubricating oil base oil and fatty acid ester, applied in lubricating composition, base material, petroleum industry and other directions, can solve the problems of unsuitability for large-scale industrial production, expensive catalyst, high production cost, and achieve good anti-wear performance , high viscosity index, easy to operate

Inactive Publication Date: 2017-09-01
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the advantages of less reaction process and high catalyst activity, but the catalyst used is expensive, complicated to make, and high in production cost, so it is not suitable for large-scale industrial production

Method used

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  • Method for preparing silicon-based biolubricant base oil from organosilicon modified fatty acid ester
  • Method for preparing silicon-based biolubricant base oil from organosilicon modified fatty acid ester
  • Method for preparing silicon-based biolubricant base oil from organosilicon modified fatty acid ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1 Mix 100g of methyl oleate with 23g of formic acid and 14g of NKC-9 cation exchange resin into the epoxy reaction kettle, slowly add 65g of hydrogen peroxide dropwise, react at 75°C for 2h, and let stand to separate after the reaction , Get the upper layer liquid and distill to obtain epoxy methyl oleate.

[0031] Step 2 Mix the epoxy fatty acid ester obtained in step 1 with 17.74 g of formic acid and add it to the ring-opening reaction device for reaction, stir and heat to 60 ° C for 2 hours, and wash with water to neutral vacuum distillation after the reaction to obtain the ring-opening product.

[0032] Step 3: Put 30 g of the ring-opened product obtained in step 2 into a three-necked flask with a thermometer, stir and heat to 40° C., and add 8.424 g of trimethylchlorosilane dropwise to the reaction system for 0.5 h; 10.02g of N,N-diisopropylethylamine was added dropwise to ensure that the system was alkaline. The reaction time was 2 hours. After the reaction w...

Embodiment 2

[0035] Step 1 mix 100g methyl linoleate with 13g formic acid, 4g solid acid Nb 2 o 5 Mix and add to the epoxy reaction kettle, slowly drop 95g of hydrogen peroxide, react at 55°C for 6h, after the reaction, stand and separate, take the upper liquid and distill to obtain epoxy linoleic acid methyl ester.

[0036] Step 2 Mix the epoxy fatty acid ester obtained in step 1 with 35 g of formic acid and add it to the ring-opening reaction device for reaction, stir and heat to 70° C. for 2 hours, and after the reaction, wash with water until neutral vacuum distillation to obtain the ring-opening product.

[0037] Step 3 Take 30g of the ring-opened product of methyl linoleate and put it into a three-necked flask with a thermometer, stir and heat to 45°C, and add 11.88g of bromotrimethylsilane dropwise to the reaction system, and the dropping time is 0.5 h; 6.12 g of pyridine was added dropwise to ensure that the system was alkaline, and the reaction time was 1.5 h. After the reaction ...

Embodiment 3

[0039] Step 1 Mix 100g of soybean oil, 25g of formic acid and 5g of titanium dioxide into the epoxy reactor, slowly add 85g of hydrogen peroxide dropwise, and react at 55°C for 6 hours. Oxygenated soybean oil.

[0040] Step 2 Mix the epoxidized soybean oil obtained in step 1 with 15 g of formic acid and add it to a ring-opening reaction device for reaction, stir and heat to 60° C. for 4 hours, and after the reaction, wash with water until neutral vacuum distillation to obtain a ring-opening product.

[0041]Take 30g of the ring-opened product of soybean oil and put it into a three-necked flask with a thermometer, stir and heat to 50°C, 10.53g of trimethylsilyl imidazole is added dropwise to the reaction system, and the dropping time is 0.5h; 7.84g Triethylamine was added dropwise to ensure that the system was alkaline, and the reaction time was 2.5 hours. After the reaction was completed, it was directly distilled under reduced pressure, and the solid was separated while it wa...

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Abstract

The invention provides a method for preparing silicon-based biolubricant base oil from organosilicon modified fatty acid ester. The method comprises the following specific steps: mixing fatty acid ester with organic acid and a catalyst and adding the mixture into an epoxidation reaction kettle, dropwise slowly adding an oxidizing agent, reacting, standing for layering, fetching a supernatant liquid and distilling to obtain epoxidized aliphatic ester; carrying out a ring-opening reaction between epoxidized aliphatic ester and organic acid, washing to neutral level after the reaction and carrying out reduced pressure distillation to obtain a ring-opening product; stirring the ring-opening product and heating to reaction temperature, dropwise adding organosilicon and an acid binding agent according to requirements and carrying out a silylation reaction, directly carrying out reduced pressure distillation after the reaction, and separating a solid to obtain the silicon-based biolubricant base oil. By the above method, the disadvantage that biolubricant base oil produced by existing technologies has poor oxidation stability and poor viscosity-temperature characteristic is overcome. The production process is environment-friendly, and energy consumption is low. The industrial acid binding agent used in the method is low-cost such that cost of the product is reduced.

Description

technical field [0001] The invention belongs to the field of bio-lubricating oil preparation, and in particular relates to a process method for preparing silicon-based bio-lubricating oil base oil by organosilicon-modified fatty acid ester. [0002] technical background [0003] At present, most lubricating oils contain petroleum components, which are harmful to the environment and difficult to degrade after use. With the enhancement of people's awareness of environmental protection and the depletion of fossil fuels, the demand for environmentally friendly lubricating oils in my country is becoming increasingly urgent. Vegetable oils are biodegradable, non-toxic, and low-volatility, and gradually become an effective and renewable base oil source for lubricants, however, the use of vegetable oils is limited by poor thermo-oxidative stability and low-temperature fluidity. Most of the current research on vegetable oils is focused on how to eliminate or reduce the unsaturated dou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/76C10N20/02
CPCC10M105/76C10N2020/02
Inventor 云志崔世新桂霞
Owner NANJING UNIV OF TECH
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