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Polymethacrylate-vinyl acetate diesel pour point depressant as well as preparation and application thereof

A technology of polymethacrylate and high-carbon methacrylate, which is applied in the petroleum industry, fuel additives, fuels, etc., can solve the problems of no pour point depressing effect, poor susceptibility to high-wax diesel, poor broad-spectrum, etc., and achieve improvement Low-temperature fluidity, obvious condensation depressing effect, and the effect of reducing condensation point and cold filter point

Inactive Publication Date: 2020-10-09
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used diesel pour point depressant is a single methacrylic pour point depressant, which has poor broad-spectrum, poor sensitivity to high-wax diesel, and has no pour point depressant effect on it.

Method used

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  • Polymethacrylate-vinyl acetate diesel pour point depressant as well as preparation and application thereof
  • Polymethacrylate-vinyl acetate diesel pour point depressant as well as preparation and application thereof
  • Polymethacrylate-vinyl acetate diesel pour point depressant as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add 10.33g (0.12mol) of methacrylic acid, 21.44g (0.1mol) of tetradecyl alcohol, 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. 50ml of toluene is heated up 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, and heat up to 110-120°C for 5 hours. When 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 alcohol. Acrylic acid generally needs to be washed 3-4 times u...

Embodiment 2

[0033] The difference from Example 1 is that 8.47g (0.03mol) tetradecyl methacrylate, 0.72g (0.01mol) vinyl acetate, and 0.1g benzoyl peroxide added in step (2) were replaced by adding 16.94 g (0.06 mol) tetradecyl methacrylate, 0.72 g (0.01 mol) vinyl acetate and 0.1766 g benzoyl peroxide.

Embodiment 3

[0035] The difference from Example 1 is that 8.47g (0.03mol) tetradecyl methacrylate, 0.72g (0.01mol) vinyl acetate, and 0.1g benzoyl peroxide added in step (2) were replaced by adding 25.41 g (0.09 mol) tetradecyl methacrylate, 0.72 g (0.01 mol) vinyl acetate and 0.2613 g benzoyl peroxide.

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Abstract

The invention relates to a polymethacrylate-vinyl acetate diesel pour point depressant as well as preparation and application thereof. The preparation method of the diesel pour point depressant comprises the following steps: 1) adding methacrylic acid, higher alcohol and a polymerization inhibitor into a solvent, heating the components to 55-65 DEG C to be fully dissolved, then adding a catalyst,and carrying out a catalytic reaction to obtain methacrylic acid high-carbon ester; and 2) adding high-carbon methacrylate and vinyl acetate into a solvent, then adding an initiator, and carrying outa polymerization reaction to obtain a high-carbon methacrylate-vinyl acetate binary polymer, i.e., the polymethacrylate-vinyl acetate diesel pour point depressant. Compared with the prior art, the polymethacrylate-vinyl acetate diesel oil pour point depressant solves the problem that a single methacrylic acid pour point depressant is poor in broad spectrum, wherein the composition of the pour point depressant is expanded by introducing vinyl acetate, so that the pour point depression effect is improved, and the diesel oil pour point depressant is simple in preparation process and convenient inexperimental operation.

Description

technical field [0001] The invention belongs to the technical field of diesel pour point depressant, and relates to a polymethacrylate-vinyl acetate binary polymer diesel pour point depressant and its preparation and application. Background technique [0002] Diesel oil is a middle distillate obtained by fractional distillation of crude oil, usually composed of two or more cracked or straight-run components. Atoms of aliphatic hydrocarbons. In addition, it also contains isoparaffins, olefins and aromatics, as well as non-hydrocarbon compounds such as sulfur, nitrogen, and oxygen. It is a multi-component complex hydrocarbon mixture. Among them, the n-alkanes in diesel oil are closely related to the low-temperature flow properties of diesel oil, the more n-alkanes content, the worse the flow properties of diesel oil under low temperature conditions. As the temperature of the diesel system decreases, the solubility of long-chain n-alkanes with relatively large molecular weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/198C10L1/04C10L10/14C08F220/18C08F218/08
CPCC10L1/1983C10L1/04C10L10/14C08F220/1818C10L2270/026C08F218/08
Inventor 蔺华林殷素雅叶伟林王爱民李欣袁铭霞解麦莹陈凤飞杨太顺韩生
Owner SHANGHAI INST OF TECH
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