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Copolymer type multi-effect additive of diesel oil

A technology of additives and copolymers, applied in the field of diesel additives, can solve the problems of good sensitivity, diesel lubricity effect is not obvious, and the effect of narrow fraction diesel is not mentioned.

Active Publication Date: 2007-11-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is stated in the article that the agent has a good sensitivity to diesel with a wide fraction, but it does not mention the effect on diesel with a narrow fraction
Moreover, none of the above diesel flow improvers mentions their impact on diesel lubricity
[0008] US 6,364,918, USP6,391,071 disclose binary or terpolymers as anti-wear agents and low-temperature flow improvers for low-sulfur diesel oils, such as diethanolamine derivatives of stearyl acrylate-maleic anhydride copolymers, but they reduce the The effect of improving the lubricity of diesel oil is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] This example is the preparation of alkyl acrylate-maleic anhydride copolymer.

[0034] Put 49.0g (0.5mol) of maleic anhydride and 100g of aromatic hydrocarbon diluent oil solvent into a reactor equipped with electric stirrer, thermometer, reflux condenser, dropping funnel and nitrogen gas inlet tube, and pass nitrogen gas for 5 to 10 minutes , and maintain a weak nitrogen flow during the reaction, heat and stir to raise the temperature to 140-150 ° C, drop 162.0 g of stearyl acrylate, 4.0 g of di-tert-butyl peroxide and 110 g of aromatic diluent oil mixture from the dropping funnel Put it into the reactor (the molar ratio of octadecyl acrylate to maleic anhydride is 1:1), drop it within 1.5 hours, keep the temperature at 140-150°C, reflux for 3 hours, cool down, and leave it for the next step of preparation. A small amount of sample was taken to measure the number average molecular weight Mn=1650 by gel permeation chromatography.

example 2

[0036] This example is the preparation of alkyl acrylate-maleic anhydride copolymer.

[0037] Put 49.0g (0.5mol) of maleic anhydride and 100g of aromatic hydrocarbon diluent oil solvent into a reactor equipped with electric stirrer, thermometer, reflux condenser, dropping funnel and nitrogen gas inlet tube, and pass nitrogen gas for 5 to 10 minutes , and maintain a weak nitrogen flow during the reaction, heat and stir to raise the temperature to 140-150 ° C, drop 324.0 g of stearyl acrylate, 3.5 g of di-tert-butyl peroxide and 273 g of aromatic diluent oil mixture from the dropping funnel Put it into the reactor (the molar ratio of octadecyl acrylate to maleic anhydride is 2:1), drop it off within 2 hours, keep the temperature at 140-150°C, reflux for 4 hours, and cool. Leave it for the next step of preparation. Take a small amount of sample and measure the number average molecular weight Mn=2930 by gel permeation chromatography.

example 3

[0039] This example is the preparation of alkyl acrylate-maleic anhydride copolymer.

[0040] Put 49.0g (0.5mol) of maleic anhydride and 50g of aromatic hydrocarbon diluent oil solvent into a reactor equipped with electric stirrer, thermometer, reflux condenser, dropping funnel and nitrogen gas inlet tube, and pass nitrogen gas for 5 to 10 minutes , and maintain a weak nitrogen flow during the reaction, heat and stir to raise the temperature to 140-150 ° C, drop 134.0 g of tetradecyl acrylate, 2.0 g of di-tert-butyl peroxide and 134 g of aromatic diluent oil mixture from the dropping funnel Put it into the reactor (the molar ratio of tetradecyl acrylate to maleic anhydride is 1:1), drop it off within 1.5 hours, keep the temperature at 140-150°C, reflux for 5 hours, and cool. Leave it for the next step of preparation. Take a small amount of sample and measure the number average molecular weight Mn=6236 by gel permeation chromatography.

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PUM

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Abstract

The invention relates to a copolymer type multi-effect additive of diesel oil, which is prepared from: (1) acrylic acid with a number average molecular weight of 500-10000 and C6-C22 alkyl ester-maleic anhydride copolymer, (2) one or more selected from polyhydric alcohol, epoxide, polyamine and alkamine, (3) C6-C50 organic acid through reaction at 50-200 deg. C. The molar ratio of reaction (1), (2) and (3) is 1:0.1-10:0.1-10. The addition agent can substantially improve the lubricity of diesel, and lower the cold filter plugging point and condensation point for diesel.

Description

technical field [0001] The invention belongs to the diesel oil additive, specifically, it can be used not only as a diesel anti-wear agent, but also as a multi-effect additive of a diesel flow improver. technical background [0002] As countries around the world pay more and more attention to environmental protection issues, in order to reduce diesel exhaust pollution and produce high-quality clean diesel oil, it has become the development direction of the modern oil refining industry. This kind of diesel oil generally has the characteristics of low sulfur content, low aromatics content, high cetane number, and light distillate. Studies have shown that sulfur is the most harmful element that increases CH and CO in diesel engine emissions, especially inhalable particulate matter (PM), so reducing the sulfur content in diesel is particularly important for improving air pollution. Now the diesel specifications of the United States, Canada, and Western European countries all st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/18C10L1/22
Inventor 蔺建民朱同荣黄燕民
Owner CHINA PETROLEUM & CHEM CORP