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Methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant, and preparation method and application thereof

A technology of naphthyl methacrylamide and methacrylate, which is applied in the field of diesel oil pour point depressant, can solve the problems of poor diesel sensitivity, single structure, and general pour point depressant effect, and achieve increased conversion rate, uniform contact, and easy decomposition Effect

Active Publication Date: 2020-08-21
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of pour point depressants used to improve low-temperature fluidity of diesel oil, but the pour point depressant effect is general, and there are problems of single structure and poor sensitivity to different types of diesel oil

Method used

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  • Methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant, and preparation method and application thereof
  • Methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant, and preparation method and application thereof
  • Methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Add 10.33g (0.12mol) of methacrylic acid, 21.44g of tetradecyl alcohol (0.1mol), and 0.192g of hydroquinone to a three-necked flask equipped with a condenser, a water separator, a thermometer, and a magnetic stirring device 1. Heat 50ml of toluene to 60°C to completely dissolve myristyl alcohol in toluene, then quickly add 0.254g of catalyst p-toluenesulfonic acid into the three-necked flask, pre-react for 1 hour, then continue to heat up to 115°C, and react for 5-6 hours , when it is observed that the amount of water in the water separator is equivalent to the theoretical value, the system is in a light yellow transparent liquid state, and the reaction is terminated. After the reaction was completed, the obtained reaction solution was distilled under reduced pressure, and then alkali washing and water washing were carried out after removing the solvent. The alkali washing was washed with a 5% NaOH solution to remove p-toluenesulfonic acid and unreacted methyl alcoho...

Embodiment 2

[0046] The difference from Example 1 is that in step (1), 21.44g tetradecyl alcohol (0.1mol), 0.254g catalyst p-toluenesulfonic acid are added instead of adding 24.24g (0.1mol) cetyl alcohol, 0.277g catalyst p-toluenesulfonic acid acid;

[0047] In step (3), add 14.13g (0.05mol) of tetradecyl methacrylate, 0.15g of benzoyl peroxide to change to add 15.53g (0.05mol) of hexadecyl methacrylate, 0.184g of benzoyl peroxide acyl.

Embodiment 3

[0049] The difference from Example 1 is that in step (1), 21.44g tetradecyl alcohol (0.1mol), 0.254g catalyst p-toluenesulfonic acid are added instead of adding 27.05g octadecyl alcohol, 0.299g catalyst p-toluenesulfonic acid;

[0050] In step (2), add 14.13g (0.05mol) of tetradecyl methacrylate, 0.15g of benzoyl peroxide to change to add 16.9g (0.05mol) of octadecyl methacrylate, 0.198g of benzoyl peroxide acyl.

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PUM

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Abstract

The invention relates to a methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant, and a preparation method and an application thereof. The preparation method comprises the following steps: (1) under a solvent condition, heating and dissolving a polymerization inhibitor, methacrylic acid and higher alcohol, then adding a catalyst, carrying out a pre-reaction, raising the temperature, and continuing the reaction to obtain methacrylic acid higher alcohol ester; (2) under a solvent condition, stirring and dissolving an acid-binding agent and naphthylamine, then adding methacryloyl chloride, reacting, washing with water, and drying to obtain N-naphthyl methacrylamide; and (3) dispersing methacrylic acid high-carbon ester and N-naphthyl methacrylamide in a solvent, adding an initiator, and carrying out a polymerization reaction to obtain the target product. A polar group in the binary polymer diesel oil pour point depressant has a bicyclic structure, and the addition of a trace amount of the polar group has a good effect on reducing the condensation point and the cold filter plugging point of diesel oil, so that the condensation point can be reduced by 4-20 DEGC, and the cold filter plugging point can be reduced by 1-10 DEG C.

Description

technical field [0001] The invention belongs to the technical field of diesel oil pour point depressant, and relates to a preparation method of a methacrylate-N-naphthyl methacrylamide polymer diesel oil pour point depressant. Background technique [0002] Diesel pour point depressant PPD is also known as diesel low temperature fluidity improver. It is a kind of oil additive that improves the crystallization process of wax in diesel oil, lowers the freezing point of diesel oil, and makes diesel oil flow continuously at a temperature lower than its normal cold filter point. It is used in small amounts but has excellent effects. It is a fuel additive commonly used in diesel production at home and abroad. It is generally an oil-soluble polymer. It has obvious effects on increasing diesel production, saving kerosene, improving the production flexibility and economic benefits of refineries, and improving the performance of diesel at low temperature. . [0003] At present, addin...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/54C10L1/238C10L10/14
CPCC08F220/1818C10L1/2381C10L10/14C08F220/54
Inventor 蔺华林殷素雅李欣袁铭霞苏保婷杨太顺吴俊杰薛原韩生
Owner SHANGHAI INST OF TECH
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