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Aromatic ternary polymer diesel pour point depressant and preparation method thereof

A technology of ternary polymer and diesel pour point depressant, which is applied in the field of pour point depressant, can solve the problems such as the filter depressant effect or the filter depressant effect does not decrease but rises, cannot adapt to petroleum products, and the pour point depressant has a single component, etc., to achieve Increased shear performance, improved cold filter point, improved condensation point effect

Active Publication Date: 2017-09-01
SHANGHAI INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing pour point depressants have relatively single components and cannot adapt to petroleum products with different structures
Although some pour point depressants can significantly reduce the freezing point of diesel oil, the effect of lowering the cold filter point is poor. For some domestic paraffin-based diesel oils, there is even no filter reduction effect or the filter effect does not decrease but rises.
Aiming at the shortcomings of the current diesel pour point depressant, such as poor universality, we have developed a new type of diesel pour point depressant

Method used

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  • Aromatic ternary polymer diesel pour point depressant and preparation method thereof
  • Aromatic ternary polymer diesel pour point depressant and preparation method thereof
  • Aromatic ternary polymer diesel pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 21.44g (0.1mol) tetradecyl alcohol, 0.309g polymerization inhibitor hydroquinone, and 50ml solvent toluene to a three-necked flask equipped with a condenser, a water separator, and a magnetic stirring device, and heat up to 55° C. Dissolve all myristyl alcohol in toluene, then quickly add 12.91g (0.15mol) of methacrylic acid and 0.481g of catalyst p-toluenesulfonic acid into the three-necked flask, and raise it to 125°C. The water generated by the esterification reaction will As the reaction temperature rises, the copolymer formed with toluene is distilled out, and enters the water separator after being condensed. React at this temperature for 5 hours. When it is observed that the amount of desorbed water is equivalent to the theoretical value, the system is in a yellow-brown transparent liquid state, and the reaction is terminated. After the reaction is completed, the obtained reaction liquid is distilled off the solvent toluene under reduced pressure when the ...

Embodiment 2

[0030] The difference from Example 1 is that the addition of 4.27g (0.02mol) tetradecylamine, 0.177g catalyst p-toluenesulfonic acid in step (3) is replaced by adding 4.83g (0.02mol) hexadecylamine, 0.185g catalyst p-toluene sulfonic acid.

Embodiment 3

[0032]The difference from Example 1 is that the addition of 4.27g (0.02mol) tetradecylamine, 0.177g catalyst p-toluenesulfonic acid in step (3) is replaced by adding 5.39g (0.02mol) octadecylamine, 0.194g catalyst p-toluene sulfonic acid.

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Abstract

The invention belongs to the technical field of pour point depressants and particularly relates to an aromatic ternary polymer diesel pour point depressant and a preparation method thereof. The pour point depressant is a tetradecyl methacrylate-long-chain alkyl maleimide-benzyl undecylenate ternary polymer which is prepared by the steps of polymerizing three monomers: tetradecyl methacrylate, maleic anhydride and benzyl undecylenate; and then performing an amination reaction with fatty amine. The synthetic method provided by the invention is simple and the raw materials are cheap and easily available; the aromatic ternary polymer diesel pour point depressant has the advantages of being stable in performance, effectively improving the condensation point and the cold filter plugging point of diesel, being small in additive dosage and good in pour point depression effect, etc.

Description

technical field [0001] The invention relates to an aromatic ternary polymer pour point depressant and a preparation method thereof, belonging to the field of pour point depressants. Background technique [0002] As a middle distillate in the petroleum refining process, diesel oil has complex components, including normal alkanes, cycloalkanes, olefins, aromatic hydrocarbons and various heteroatom structures. However, n-alkanes are closely related to the low-temperature fluidity of diesel oil, and the more n-alkanes are, the worse the fluidity at low temperature is. As the temperature decreases, when the temperature is lower than the cloud point of diesel oil, n-alkanes will form wax and separate from the fuel oil. As the temperature decreases, the wax crystals will attract each other through van der Waals force and form a three-dimensional network. The structure wraps the rest of the liquid in it, making it lose its fluidity, thus affecting the normal use and transportation ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F222/06C08F220/16C08F8/32C10L1/236
CPCC08F8/32C08F220/18C08F220/1818C10L1/14C10L1/236C08F222/06C08F220/16
Inventor 韩生许广文薛原蔺华林王爱民廉翔赵志成刘平周嘉伟
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
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