A kind of refrigerating machine oil base oil and its preparation method and application

A technology for refrigerating machine oil and base oil, which is applied in the direction of base material, petroleum industry, lubricating composition, etc. It can solve the problems of many by-products, low catalyst selectivity, and difficult removal, and achieve low by-products, which is beneficial to industrial production and operation. easy effect

Active Publication Date: 2021-03-02
SHANGHAI DONGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of refrigeration machine oil base oil and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step (1): Weigh 28.2g of trimethylolpropane, 100g of nonanoic acid, and 0.11g of silicon phosphate in the reaction kettle, vacuumize, start stirring, and then slowly heat up to 180°C. After the temperature rises to 180°C, keep The kettle pressure is -0.095MPa≤vacuum degree≤-0.085MPa. The distillation unit distills the water generated by the reaction.

[0025] Step (2): After maintaining the reaction for 4.5 hours, weigh the quality of the produced water to estimate the reaction is over, cool to 60-80°C, remove silicon phosphate by suction filtration while it is hot, and obtain a light yellow oily liquid which is trimethylolpropane nonanoic acid ester. Tested by an elemental analysis instrument, the theoretically synthesized product is C 33 h 62 o 6 , the mass fraction of carbon element is 71.48% in theory, 71.51% in reality; the mass fraction of hydrogen element is 11.12% in theory, and 11.03% in reality. It is found that the experimental value is consistent with th...

Embodiment 2

[0028] Step (1): Weigh 28.2g of trimethylolpropane, 35.9g of hexanoic acid, 64g of lauric acid, and 0.13g of silicon phosphate in the reaction kettle, vacuumize, start stirring, then slowly heat up to 180°C, and the temperature rises to After 180°C, keep the kettle pressure at -0.095MPa≤vacuum degree≤-0.085MPa. The distillation unit distills the water generated by the reaction.

[0029] Step (2): After maintaining the reaction for 4.5 hours, weigh the quality of the produced water to estimate the end of the reaction, cool to 60-80°C, remove the solid catalyst by suction filtration while it is hot, and obtain a light yellow oily liquid which is trimethylolpropane hexanoic acid laurate. Tested by an elemental analysis instrument, the theoretically synthesized product is C 33 h 62 o 6 , the mass fraction of carbon element is theoretically 71.48%, and the actual value is 71.54%; the theoretical mass fraction of hydrogen element is 11.12%, and the actual value is 11.00%.

[00...

Embodiment 3

[0032] Step (1): Weigh 28.2g of trimethylolpropane, 46.4g of hexanoic acid, 65.3g of stearic acid, and 0.13g of silicon phosphate in the reaction kettle, vacuumize, start stirring, and then slowly heat up to 180°C. After rising to 180°C, keep the kettle pressure at -0.095MPa≤vacuum degree≤-0.085MPa. The distillation unit distills the water generated by the reaction.

[0033] Step 2: After maintaining the reaction for 4.5 hours, weigh the quality of the water produced, estimate the reaction is over, cool to 60-80°C, remove the silicon phosphate by suction filtration while it is hot, and obtain a light yellow oily liquid which is trimethylolpropane stearyl hexanoate esters. Tested by an elemental analysis instrument, the theoretically synthesized product is C 37 h 70 o 6 , the mass fraction of carbon element is theoretically 72.79%, and the actual value is 72.70%; the theoretical mass fraction of hydrogen element is 11.48%, and the actual value is 11.37%.

[0034] The acid ...

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Abstract

The invention discloses a refrigerating machine oil base oil, a preparation method and application thereof. The preparation method comprises: mixing trimethylolpropane and fatty acid, and reacting under the action of a catalyst; the catalyst contains silicon phosphate. The catalyst used in the preparation method of the invention has high selectivity to the substrate, low by-products and high catalytic efficiency; it can be removed by filtration after the reaction is finished, and the operation is simple, energy-saving and environment-friendly. The prepared refrigerating machine oil base oil has good stability and excellent properties such as viscosity, pour point and lightning.

Description

technical field [0001] The invention belongs to the field of ester preparation in the field of organic synthesis, and in particular relates to a refrigerating machine oil base oil and a preparation method and application thereof. Background technique [0002] Refrigeration oil is the oil used to lubricate the moving parts in the refrigeration compressor, also known as lubricating oil. In the compressor, the refrigerating machine oil mainly plays four roles of lubrication, sealing, cooling and energy regulation. POE (PolyolEster) oil is a synthetic polyol ester oil, which can be used not only in HFC refrigerant systems, but also in hydrocarbon refrigerants. As we all know, chlorofluorocarbon and hydrochlorofluorocarbon refrigerants have been gradually banned due to their destruction of the ozone layer in the atmosphere due to their greenhouse effect, and hydrofluorocarbons are considered to be rational refrigerants to replace HCFCs. However, HFCs are less compatible with co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/38C10N20/02C10N40/30
CPCC10M105/38C10M2207/2835C10N2030/06C10N2040/30C10N2020/02
Inventor 方洇李欣怡何志强聂永倩安鹏云
Owner SHANGHAI DONGDA CHEM
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