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Preparation method of polyvinyl ether lubricating oil base oil mutually soluble with R32 refrigerant at low temperature and application of polyvinyl ether lubricating oil base oil in refrigeration system

A technology of lubricating base oil and polyvinyl ether, which is applied in the field of lubricating oil for refrigeration systems, can solve problems such as turbidity, and achieve the effects of good mutual solubility, excellent compatibility and good mutual solubility.

Inactive Publication Date: 2017-09-29
沈阳市宏城精细化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the low-temperature compatibility between R32 and traditional polyvinyl ether can only reach the standard above -10°C, and turbidity occurs when it is lower than -10°C, which restricts the use and promotion of R32. Therefore, there is an urgent need for a product that is compatible with R32 Lubricating oil base oil with excellent low-temperature miscibility to adapt to the use conditions of R32

Method used

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  • Preparation method of polyvinyl ether lubricating oil base oil mutually soluble with R32 refrigerant at low temperature and application of polyvinyl ether lubricating oil base oil in refrigeration system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1, mixing: take 20% of vinyl methyl ether and 80% of vinyl ether and mix evenly;

[0036] S2. Polymerization: Under the protection of nitrogen at normal pressure and 20-30°C, add a mixture of vinyl methyl ether and vinyl ethyl ether and a catalyst of boron trifluoride ether with a weight ratio of 0.1% in the reaction kettle. Carry out polymerization reaction under, obtain polymerization product A;

[0037] S3. Hydrogenation: Raise the pressure in the reactor to 5MPa-15MPa, and the temperature is 100-200°C, add a nickel-based or noble metal catalyst, and complete the hydrogenation reaction under the action of hydrogen purge and catalyst, so that the polymerization product A The double bond is saturated to obtain product B;

[0038] S4. Distillation: The product B after hydrogenation is subjected to vacuum distillation, and the light components are distilled off to obtain a lubricating oil base oil. The prepared lubricating oil base oil is composed of a copolymer of vin...

Embodiment 2

[0046] S1, mixing: take 30% vinyl methyl ether and 70% vinyl ether and mix evenly;

[0047] S2. Polymerization: Under the protection of nitrogen at normal pressure and 20-30°C, add a mixture of vinyl methyl ether and vinyl ethyl ether and a catalyst of boron trifluoride ether with a weight ratio of 0.1% in the reaction kettle. Carry out polymerization reaction under, obtain polymerization product A;

[0048]S3. Hydrogenation: Raise the pressure in the reactor to 5MPa-15MPa, and the temperature is 100-200°C, add a nickel-based or noble metal catalyst, and complete the hydrogenation reaction under the action of hydrogen purge and catalyst, so that the polymerization product A The double bond is saturated to obtain product B;

[0049] S4. Distillation: The product B after hydrogenation is subjected to vacuum distillation, and the light components are distilled off to obtain a lubricating oil base oil. The lubricating oil base oil obtained is composed of polyvinyl methyl ether, p...

Embodiment 3

[0057] S1, mixing: take 35% of vinyl methyl ether and 65% of vinyl ether and mix evenly;

[0058] S2. Polymerization: Under the protection of nitrogen at normal pressure and 20-30°C, add a mixture of vinyl methyl ether and vinyl ethyl ether and a catalyst of boron trifluoride ether with a weight ratio of 0.1% in the reaction kettle. Carry out polymerization reaction under, obtain polymerization product A;

[0059] S3. Hydrogenation: Raise the pressure in the reactor to 5MPa-15MPa, and the temperature is 100-200°C, add a nickel-based or noble metal catalyst, and complete the hydrogenation reaction under the action of hydrogen purge and catalyst, so that the polymerization product A The double bond is saturated to obtain product B;

[0060] S4. Distillation: Distill the hydrogenated product B under reduced pressure to remove light components to obtain lubricating oil base oil.

[0061] or

[0062] S1', Homopolymerization: Under the protection of nitrogen at normal pressure an...

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Abstract

The invention belongs to the field of lubricating oil for refrigeration systems and relates to a preparation method of polyvinyl ether lubricating oil base oil mutually soluble with an R32 refrigerant at low temperature and application of the polyvinyl ether lubricating oil base oil in a refrigeration system. The preparation method comprises the following steps: by taking methyl vinyl ether and ethyl vinyl ether as raw materials, controlling a proportion of the two raw materials and combining with regulation of a dosage of boron trifluoride diethyl etherate as a polymerization catalyst, the two raw materials copolymerize to obtain a polymer or are blended to obtain a mixture after homopolymerizing respectively, and then hydrogenation and distillation are performed on the polymer or the mixture to obtain the polyvinyl ether lubricating oil base oil. The lubricating oil base oil provided by the invention has excellent intersolubility with the R32 refrigerant, can be well mutually soluble with the R32 refrigerant at low temperature ranging from 60 DEG C below zero to 10 DEG C below zero without separation, has excellent stability and lubricity, solves the problem of low-temperature intersolubility with a new generation of refrigerant R32, is also good in intersolubility with the traditional refrigerant and is strong in universality.

Description

technical field [0001] The invention belongs to the field of lubricating oil for refrigeration systems, and relates to a method for manufacturing a polyvinyl ether lubricating oil base oil that is miscible with R32 refrigerant at low temperature and its application in a refrigeration system. Background technique [0002] Polyvinyl ether (PVE) is the base oil suitable for the new type of refrigeration machine oil used in the refrigeration system. PVE has the advantages of natural non-hydrolysis, super lubricity, compatibility, etc. It is the base oil of refrigerator lubricating oil that has attracted much attention in the world today. [0003] With the continuous upgrading of environmental protection requirements worldwide, more environmentally friendly new refrigerants have been adopted in the refrigeration field, so the low-temperature miscibility between new refrigerants and polyvinyl ether has become a prominent problem. [0004] At present, R32 (difluoromethane) is a re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M107/24C08F216/18C08F116/18C08F8/04C10N30/06
CPCC08F8/04C08F116/18C08F216/18C10M107/24C10M2209/043C10M2211/022C10N2030/06C10N2030/70
Inventor 张廼文曲连国洪永清谢强
Owner 沈阳市宏城精细化工厂
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