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Polymer, and preparation method and use thereof

A technology of polymer and polymerization reaction, applied in the field of polymers, can solve the problems of poor compatibility of lubricating oil, etc., achieve good demulsification effect, short demulsification time, and reduce interfacial tension

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Existing demulsifiers have the defect of poor compatibility with lubricating oil, which needs further improvement and development

Method used

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  • Polymer, and preparation method and use thereof
  • Polymer, and preparation method and use thereof
  • Polymer, and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In a 250 milliliter autoclave with a motor stirrer, condensation and heating jacket, add 4.5 grams of tetrakis (4-hydroxyphenyl) porphyrin (M=678.7, 0.0066mol), add 1.5 grams of potassium hydroxide (0.027mol ), then the temperature was raised to 90°C after nitrogen replacement three times; 30 grams of propylene oxide (0.52mol) was started to be added dropwise in the autoclave, and the reaction pressure was controlled at 0.6MPa, and the reaction temperature was 125°C for 3 hours; Add 14 grams (0.32mol) of ethylene oxide dropwise, control the reaction pressure 0.5MPa, and the reaction temperature is 125°C, and react for 2 hours; add 10 grams of toluene after the reaction is completed, transfer the material to a 200ml beaker, and add 10% sulfuric acid 50 milliliters of solutions neutralize the residual potassium hydroxide in the reaction product, and wash twice with deionized water until the reaction product is neutral; the oil layer in the material is put into a vacuum dis...

Embodiment 2

[0050] In 250 milliliters of autoclaves with motor stirrer and condensation, heating mantle, add tetrakis (4-hydroxyphenyl) porphyrin 5 grams (M=678.7, 0.0074mol), 1.25 grams of sodium hydroxide (0.031mol), Then, after replacing with nitrogen three times, the temperature was raised to 90°C; 20 grams of propylene oxide (0.34mol) was added dropwise to the autoclave, the reaction pressure was controlled at 0.6MPa, the reaction temperature was 122°C, and the reaction was carried out for 2.5 hours; Ethylene oxide 10.5 grams (0.24mol), control reaction pressure 0.5MPa, reaction temperature is 125 ℃, reacts for 2 hours; Add 20 grams of xylenes after reaction finishes, material is transferred in the 200ml beaker, adds the sulfuric acid solution of 10% 50 milliliters of sodium hydroxide remained in the neutralization reaction product, and washed twice with deionized water until the reaction product was neutral; the oil layer in the material was put into a vacuum distillation device, and...

Embodiment 3

[0052] Add 4.4 grams of tetrakis (4-hydroxyphenyl) porphyrin (M=678.7, 0.0065mol) in 250 milliliters of autoclaves with motor stirrer and condensation, heating jacket, then add 1.6 grams of potassium hydroxide (0.029mol ), the temperature was raised to 90°C after nitrogen replacement three times; 35 grams of propylene oxide (0.60mol) was added dropwise to the autoclave, the reaction pressure was controlled at 0.6MPa, the reaction temperature was 126°C, and the reaction was carried out for 3.5 hours; 12 grams (0.27mol) of ethylene oxide, control the reaction pressure 0.5MPa, the reaction temperature is 125 ° C, and react for 2.5 hours; after the reaction, add 90 ° C ~ 120 ° C petroleum ether, transfer the material to a 200 ml beaker, add 10% 50 ml of sulfuric acid solution neutralizes the residual potassium hydroxide in the reaction product, and washes it twice with deionized water until the reaction product is neutral; put the oil layer in the material into a vacuum distillatio...

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Abstract

The invention provides a polymer, and a preparation method and a use thereof. The structure of the polymer is shown in the description; and in the structure, m is an integer in a range of 5-50, and n is an integer in a range of 5-40. The polymer is a product of a polymerization reaction of tetra(4-hydroxyphenyl)porphyrin, epoxypropane and ethylene oxide. The polymer can be used as a lubricating oil demulsifier, can be stably dispersed in lubricating oil, has the advantages of high interface activity, great reduction of oil-water interface tension, short demulsification time and good demulsification effect, and is especially suitable for internal combustion engine lubricating oil, industrial gear oil, steam turbine oil and marine crankcase oil.

Description

technical field [0001] The present invention relates to a polymer, in particular to a polymer used as a lubricating oil demulsifier. Background technique [0002] Internal combustion engine oil and industrial lubricating oil often encounter occasions where water exists during use. These lubricating oils are easy to form a water-in-oil emulsification system with water, especially when they contain surface-active additives, the emulsification of the lubricating oil is more difficult. serious. If the oil-water separation cannot be realized in time, the lubricating condition of the lubricating oil will be changed. The light one will affect the formation of the oil film and reduce the lubricating ability. The severe one will cause mechanical corrosion and wear, and even damage the equipment, affecting production and safety. Therefore, the demulsification performance of many lubricating oils is an important physical and chemical index. Lubricating oil demulsification methods mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C10G33/04
Inventor 刘依农段庆华李玲
Owner CHINA PETROLEUM & CHEM CORP
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