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Preparation method of binary polymer wax oil pour point reducer

A technology of pour point depressant and polymer, which is applied in the field of preparation of chemical preparations to achieve superior pour point depressant effect, good pour point depressant effect and stable performance

Inactive Publication Date: 2011-06-01
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on pour point depressants in various countries has been active in recent years, there are few reports on pour point depressants specially used in the field of wax oil

Method used

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Experimental program
Comparison scheme
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Embodiment

[0021] Add 4.903 g of maleic anhydride and 40.5735 g of stearyl alcohol in sequence in a three-necked flask, and use toluene (9.0953 g) as a solvent and a water-carrying agent. At the beginning of the reaction, preheat to fully mix and dissolve the reactants. When the solution is clear, add 0.6821 g of catalyst at 80 °C. Continue to increase the temperature until the solution boils, and the water generated by the reaction enters the water separator along with the toluene. When the water output is equivalent to the theoretical value, stop heating. After the reaction was completed, vacuum distillation was carried out, the solvent toluene was distilled off and washed three times with absolute ethanol to obtain stearyl maleic anhydride.

[0022] The purified esterification reaction product octadecyl maleic anhydride is placed in a three-necked flask, and heated in a constant temperature water bath, and 12.9135 g of vinyl acetate and 1.1678 g of initiator BPO are added to the three...

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Abstract

The invention discloses a preparation method of a binary polymer wax oil pour point reducer, relating to a preparation method of a chemical preparation. The preparation method is characterized in that the wax oil pour point reducer is formed by the steps of firstly esterifying maleic anhydride and octadecanol and then polymerizing with vinylacetate. The preparation method comprises the steps of: firstly, preheating the maleic anhydride, the octadecanol and a methylbenzene mixed solution used as a solvent and a water carrying agent to be clear, adding a catalyst, continuously heating to be boiled, reacting, then carrying out reduced pressure distillation to obtain the dioctadecyl maleic anhydride; and then mixing the dioctadecyl maleic anhydride with the vinylacetate and an initiating agent BPO (benzoyl peroxide), and polymerizing the dioctadecyl maleic anhydride with the vinylacetate to obtain a final product of a dioctadecyl maleic anhydride-vinylacetate polymer (PMVA). The novel pour point reducer has excellent wax oil pour point reducing effect and more stable performance, and is applied to the fields of extraction and transportation of petroleum.

Description

technical field [0001] The invention relates to a preparation method of a chemical preparation, in particular to a preparation method of a binary polymer wax oil pour point depressant. Background technique [0002] With the development of petroleum and petrochemical industry, the rheological properties of wax oil have been paid more and more attention by people. Wax oil mainly refers to atmospheric pressure wax oil and coking wax oil. Atmospheric pressure wax oil is produced from atmospheric pressure equipment and can be used as a raw material for catalysis and coking, while coking wax oil is produced from coking equipment and is mainly used in ships. aspect. Since the wax oil contains a large amount of waxy components, its freezing point is relatively high, which adds a lot of difficulties to the oil transportation operation. Therefore, lowering its freezing point and improving its flow properties have become the primary tasks. [0003] Therefore, the most attention-grab...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F222/14C09K8/524
Inventor 龙小柱王长松宗学军宁志高龙华倩李妍李亮
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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