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Aminolysis polymer, and preparation method and application thereof

A polymer, aminolysis technology, applied in drilling compositions, chemical instruments and methods, mechanical equipment, etc., can solve the problem of poor dispersion and thermal stability of pour point depressant products, and unsatisfactory effects of high wax and high viscosity crude oil , can not guarantee the effectiveness of the reaction time and other problems, to achieve the effect of clean production process, easy to mass production, long action time

Inactive Publication Date: 2015-02-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For low-waxy crude oil, there are good industrial solutions such as polyethylene-vinyl acetate copolymer for point depressing, but the effect is not ideal for high-waxy and high-viscosity crude oil; Both use solution polymerization or precipitation polymerization. Solution polymerization often uses toxic substances as the polymerization medium, which is easy to cause environmental pollution, while precipitation polymerization tends to produce viscous polymers during the synthesis process. As viscous polymers continue to be produced, the reaction is interrupted, and there is no guarantee. The effectiveness of the reaction time and the molecular weight is limited, the dispersibility and thermal stability of the pour point depressant product are poor

Method used

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  • Aminolysis polymer, and preparation method and application thereof
  • Aminolysis polymer, and preparation method and application thereof
  • Aminolysis polymer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: a kind of preparation method of aminolysis type polymer, comprises the steps:

[0039] (1) Weigh 10g of octadecyl methacrylate, according to maleic anhydride, the molar ratio of octadecyl methacrylate is 1:1, add the dispersant amount of 2% of the total mass of the monomer, join in 50 ml of ethanol , under nitrogen protection, 0.1 g of azobisisobutyronitrile was added, condensed to reflux, and reacted at 60° C. for 4 hours.

[0040] (2) The obtained reaction solution is suction-filtered with a Buchner funnel, washed 3-4 times with alcohol and acetone, and then vacuum-dried at 25-35° C. for 24 hours to obtain poly(maleic anhydride-octadecyl methacrylate) Intermediate powder.

[0041] (3) Add maleic anhydride to aniline at a molar ratio of 1:2, add it into 50 ml of toluene, protect it under nitrogen, condense and reflux, and react at 60°C for 4 hours.

[0042] (4) The reaction product was poured into alcohol solution for washing, filtered and then vacuum-d...

Embodiment 2

[0061] Embodiment 2: The steps of the preparation method of the aminolysis type polymer are the same as in Example 1, except that stearyl methacrylate is replaced by lauryl methacrylate.

[0062] The target product obtained by embodiment 2 has the structure shown below:

[0063]

[0064] Among them, p and q are natural numbers greater than 1 but less than 1600, and R is C 12 h 25 .

Embodiment 3

[0065] Embodiment 3: The steps of the preparation method of the aminolysis type polymer are the same as in Example 1, except that hexadecyl methacrylate is used instead of stearyl methacrylate.

[0066] The target product obtained by embodiment 3 has the structure shown below:

[0067]

[0068] Among them, p and q are natural numbers greater than 1 but less than 1600, and R is C 16 h 33 .

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Abstract

The invention discloses an aminolysis polymer, and a preparation method and application thereof, belonging to the field of preparation of high polymer materials. The preparation method of the aminolysis polymer comprises the following steps: (1) preparation of poly(maleic anhydride-high carbon methacrylate) intermediate product; (2) pulverization treatment of intermediate product; (3) preparation of aminolysis poly(maleic anhydride-high carbon methacrylate) pour-point depressant; and (4) treatment of target product aminolysis poly(maleic anhydride-high carbon methacrylate) pour-point depressant reaction solution and preparation of powder. The pour-point depressant has the advantages of favorable pour-point depression and visbreaking effects, low cost, simple production and clean and pollution-free process, and the product is easy to obtain, transport and store. The net pour-point depression amplitude for the Daqing high-wax thick oil is up to 8 DEG C, and the apparent visbreaking ratio is up to 72.1%, which are respectively better than the pour-point depression effects of the commercially available EVA (ethylene-vinyl acetate): the net pour-point depression temperature is 4 DEG C, and the apparent visbreaking ratio is 68.7%.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to an aminolysis type polymer and its preparation method and application. Background technique [0002] Crude oil is a mixture of waxes, asphaltenes, colloids, and long-chain alkanes and aromatics. Paraffin is easy to dissolve in crude oil, and the wax will be precipitated in the form of crystals at low temperature. The amount of wax crystals will increase with the decrease of temperature, and finally form three-dimensional network structure crystals, which will greatly reduce the fluidity of crude oil. Big difficulty. With the development of society, the demand for energy is increasing, and the demand for oil is naturally rising. Therefore, improving the fluidity of heavy oil has become one of the hot research issues in petrochemical industry today. [0003] Crude oil pour point depressant is a chemically synthesized polymer. In general, adding ...

Claims

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Application Information

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IPC IPC(8): C08F222/06C08F220/18C08F8/32C08F2/08C09K8/588F17D1/17
Inventor 于萍于帅张宏民张开亮张长桥魏云鹤
Owner SHANDONG UNIV
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