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Polymer used in lubricating oil pour point depressing, lubricating oil pour point depressant, and preparation method thereof

A lubricating oil base oil and polymer technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of insignificant effect, improved pour point depressing effect, and insignificant pour point depressing effect of paraffinic base oil, etc., to achieve the best Depressing effect, effect of improving shape and size

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Applied Chemical Industry, Vol. 35, No. 12, 2006, reported the synthesis of lubricating oil pour point depressant T818B and its pour point depressant effect. 8 -C 26 Alcohol and fumarate esterified method to prepare higher carbon alcohol fumarate, and then further polymerized with vinyl acetate-fumarate high polymer, and investigated its pour point depressing effect, found that its effect on cycloalkyl The base oil has a good pour point depressing effect, but the pour point depressing effect on paraffin base oil is not obvious
[0006] From the above analysis, it can be seen that the prior art uses fumarate and vinyl acetate as polymerized monomers, and improves the pour point depressing effect by changing the combination of alkyl carbon numbers in the polymerized monomers, but the effect is not significant
So far, there is no research report on improving the pour point depressing effect by introducing a third functional monomer

Method used

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  • Polymer used in lubricating oil pour point depressing, lubricating oil pour point depressant, and preparation method thereof
  • Polymer used in lubricating oil pour point depressing, lubricating oil pour point depressant, and preparation method thereof
  • Polymer used in lubricating oil pour point depressing, lubricating oil pour point depressant, and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0030] Under nitrogen protection, add 42g of 6# hydrogenated oil (produced by Sinopec Shanghai Gaoqiao Petrochemical Company, kinematic viscosity at 100°C to 5.92mm 2 ·s -1 ), 30.0g stearyl fumarate (laboratory synthesis), 10.0g vinyl acetate (Sinopharm Chemical Reagent Co., Ltd.), 2.0g vinylpyrrolidone (Sinopharm Chemical Reagent Co., Ltd.), 0.2g azobis For isobutyronitrile (produced by Sinopec Yanshan Petrochemical), turn on the stirring and heat up to 70°C. At this time, it is observed that the reactant has obvious exothermic phenomenon. The reaction temperature is controlled at 75°C, and the reaction is performed for 2 hours. Then add 0.1g of azobisisobutyronitrile to the reaction system, continue to react for 5 hours, at this time, the material becomes a light yellow viscous liquid, and finally the material is down to room temperature under nitrogen protection, to obtain stearyl fumarate Terpolymer of ester, vinyl acetate and vinylpyrrolidone. Among them, stearyl fumara...

example 2

[0032] Under nitrogen protection, add 46.0 g of 100N hydrogenated oil (produced by Sinopec Shanghai Gaoqiao Petrochemical Company, kinematic viscosity at 100°C to 3.8mm 2 / s), 15.0g lauryl fumarate (laboratory synthesis), 18.0g cetyl fumarate (laboratory synthesis), 8.6g vinyl acetate, 4.0g vinylpyrrolidone (Sinopharm Chemical Reagent Co., Ltd.), 0.15g of azobisisobutyronitrile, turn on the stirring and heat up to 70°C. At this time, it is observed that the reactant has obvious exothermic phenomenon, and the reaction temperature is controlled at 75°C. After 2 hours of reaction, the material thickens obviously . Then add 0.15g azobisisobutyronitrile to the reaction system, continue to react for 5 hours, at this time, the material becomes a light yellow viscous liquid, and finally the material is down to room temperature under nitrogen protection, to obtain dodecyl fumarate Tetrapolymer of esters, stearyl fumarate, vinyl acetate and vinylpyrrolidone. Among them, dodecyl fumara...

example 3

[0034] Under nitrogen protection, add 45.0 g of PAO No. 4 base oil (produced by China Petroleum Lanzhou Petrochemical Company, with a kinematic viscosity of 3.9 mm at 100 ° C) to a 500 ml three-necked flask with an electric stirrer and a reflux condenser. 2 / s), 5.0g decyl fumarate (laboratory synthesis), 12.0g myristyl fumarate (laboratory synthesis), 15.0g octadecyl fumarate, 10.0g vinyl acetate, 3.0g Vinylpyrrolidone (Sinopharm Chemical Reagent Co., Ltd.), 0.15g azobisisobutyronitrile, turn on the stirring and heat up to 70°C. At this time, it is observed that the reactant has obvious exothermic phenomenon, and the reaction temperature is controlled to be 75°C. Reaction 2 hour, at which point the material visibly thickened. Then add 0.1g azobisisobutyronitrile to reaction system again, continue to react for 5 hours, at this moment material becomes light yellow viscous liquid, finally material is down to room temperature under nitrogen protection, obtains decyl fumarate, Pen...

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Abstract

The invention relates to a polymer used in lubricating oil pour point depressing, a lubricating oil pour point depressant, and a preparation method thereof. The polymer provided by the invention is a random copolymer of fumarate, vinyl acetate and vinyl pyrrolidone. The polymer has a certain dispersion effect, and a good pour point depressing effect.

Description

technical field [0001] The invention relates to a polymer for pour point depressing of lubricating oil, a pour point depressant for lubricating oil and a preparation method thereof, in particular to a vinyl acetate-fumarate-vinylpyrrolidone copolymer which can be used for pour point depressing of lubricating oil, containing the polymer A lubricating oil pour point depressant and a preparation method thereof. Background technique [0002] The pour point depressant, also known as the low-temperature flow improver, is an oil-soluble chemically synthesized polymer. Adding an appropriate amount of pour point depressant to the waxy oil can interact with the wax crystals in the oil under certain conditions, significantly Minimally lower the freezing point of waxy oil and improve the low temperature fluidity of waxy oil. There are many types of pour point depressants for lubricating oil. At present, the commonly used ones at home and abroad are alkyl naphthalene, polyalphaolefin, p...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F218/08C08F226/10C10M149/10
Inventor 李玲段庆华
Owner CHINA PETROLEUM & CHEM CORP
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