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A kind of application method of binary copolymer containing benzene ring

A technology of binary copolymer and acid anhydride binary copolymer, which is applied in the directions of liquid carbonaceous fuel, fuel, fuel additive, etc. efficiency and simple preparation process

Active Publication Date: 2021-11-12
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of application containing benzene ring binary copolymer in diesel oil pour point depressing, improve the polarity of pour point depressant molecule by the benzene ring in benzyl methacrylate, secondly in the carbon of maleic anhydride Amine groups are introduced into oxygen bonds for amination, so that other bonds of maleic anhydride except carbon-carbon double bonds can be used, and the problem of poor broad-spectrum performance of methacrylate pour point depressants can be solved

Method used

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  • A kind of application method of binary copolymer containing benzene ring
  • A kind of application method of binary copolymer containing benzene ring
  • A kind of application method of binary copolymer containing benzene ring

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of diesel oil point depressant, is made up of binary copolymer containing benzene ring, the preparation method of described binary copolymer containing benzene ring is:

[0030] (1) Add 18.0g of benzyl methacrylate, 10.0g of maleic anhydride and 50mL of toluene to a three-necked flask equipped with a condenser, a temperature controller, a magnetic stirring device and a nitrogen gas inlet, and pass nitrogen into the three-necked flask first 2-3 minutes, vacuum 1-2 minutes, repeat three times to remove the air in the reaction system. Under nitrogen protection, the temperature of the system was slowly raised to 110° C., and 10 mL of toluene solution containing 0.224 g of benzoyl peroxide was added dropwise to the reactor (completely added within 30-45 minutes). After the reaction temperature was kept at 110°C for 8 hours of polymerization, the polymer was cooled to room temperature, excess ethanol was added dropwise to the reactant to produce a precipitate, the supe...

Embodiment 2

[0034] The difference from Example 1 is that in step (2), 11 g of octadecylamine and 0.104 g of catalyst p-toluenesulfonic acid are added instead of adding 9.8 g of hexadecylamine and 0.0944 g of catalyst p-toluenesulfonic acid. The molecular Mw of the polymer tested by GPC is 61860g / mol, Mn is 43510g / mol, and Mw / Mn is 1.422, and the product benzyl methacrylate-maleic anhydride-hexadecylamine is characterized by NMR as figure 2 shown.

Embodiment 3

[0036] The difference from Example 1 is that in step (2), 11 g of octadecylamine and 0.104 g of catalyst p-toluenesulfonic acid were added instead of 8.7 g of tetradecylamine and 0.0856 g of catalyst p-toluenesulfonic acid. The molecular Mw of polymer tested by GPC is 63560g / mol, and Mn is 46240g / mol, and Mw / Mn is 1.375, and product benzyl methacrylate-maleic anhydride-tetradecylamine is carried out NMR characterization as follows image 3 shown.

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Abstract

The invention provides an application method of a benzene ring-containing binary copolymer. The preparation method of the benzene ring-containing binary copolymer includes: dissolving benzyl methacrylate-maleic anhydride binary copolymer in a toluene solvent. In, add higher aliphatic amine or aromatic amine and p-toluenesulfonic acid catalyst to carry out amination reaction and purify to obtain benzyl methacrylate-maleic anhydride binary copolymer. The invention not only has strong solubility, but also can effectively improve the low-temperature flow performance of diesel fuel. Adding the obtained diesel pour point depressant containing benzene ring binary copolymer to Songjiang 0# diesel can reduce the condensation point and cold filtering point of the diesel by 6-19°C and 0-7°C respectively.

Description

technical field [0001] The invention relates to the application of a diesel pour point depressant containing a benzene ring binary copolymer, and belongs to the technical field of oil performance improvement. Background technique [0002] Diesel pour point depressant can effectively improve the low-temperature fluidity of diesel, and is the most economical and convenient way to improve the low-temperature fluidity of diesel. By adding a pour point depressant to form low point diesel oil, it can increase the cutting of diesel fraction in crude oil, save crude oil energy, and have great social and economic benefits. When diesel oil is not added with pour point depressant, when the temperature drops, the diesel oil will precipitate wax crystals. As the temperature continues to drop, the wax crystals will gradually increase, and finally form a three-dimensional network structure, which greatly reduces the fluidity of diesel oil. The addition of diesel pour point depressant effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F222/06C08F8/32C10L1/236C10L10/14
CPCC08F8/32C08F220/18C10L1/236C10L10/14C10L2270/026C08F222/06
Inventor 薛原解麦莹殷素雅陈凤飞杨太顺蔺华林韩生周明安刘金宝
Owner SHANGHAI INST OF TECH
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