Preparation method and application of hyperbranched polymer with propylene diamine as initiator

A technology of hyperbranched polymer and propylenediamine, which is applied in the field of petroleum additives, can solve the problems of increasing oil production costs, corroding oilfield pipelines, etc., and achieve the effect of high-efficiency demulsification

Active Publication Date: 2017-04-19
ZHEJIANG UNIV
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Problems solved by technology

This brings a lot of inconvenience to the collection, transportation and processing of crude oil, corrodes oilfield pipelines, and increases oil production costs. The synthesis and application of demulsifiers play a vital role in the treatment of oilfield production fluid or sewage treatment

Method used

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  • Preparation method and application of hyperbranched polymer with propylene diamine as initiator

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Embodiment 1

[0028] Embodiment 1: take propylene diamine as the hyperbranched polymer (h-PAMAM) preparation of initiator

[0029] Dissolve 14.2 g of propylenediamine in 25 mL of anhydrous methanol, weigh 17.2 g of methyl acrylate dropwise into the reaction system, and vigorously stir at room temperature for 48 h. The reaction product was subjected to decompression and compression reaction to obtain a product with a high degree of polymerization. The temperature rise program was set from 50°C to 140°C, and the reaction time was 8h; then, the crude product was cooled to room temperature and poured into 200mL ether and stirred for 30min. The yellow transparent viscous liquid sank to the lower layer, discarded the upper layer of ether, repeated the precipitation twice, and rotary evaporated at 60°C under vacuum to obtain h-PAMAM.

[0030] The structural representation of the hyperbranched polymer (h-PAMAM) with propylenediamine as the initiator is as follows: figure 1 (It should be noted that...

Embodiment 2

[0031] Embodiment 2: take propylene diamine as the hyperbranched polymer (h-PAMAM) preparation of initiator

[0032] Dissolve 14.8 g of propylenediamine in 25 mL of anhydrous methanol, weigh 22.2 g of methyl acrylate dropwise into the reaction system, and vigorously stir at room temperature for 60 h. The reaction product was subjected to decompression and compression reaction to obtain a product with a high degree of polymerization. The temperature rise program was set from 60°C to 140°C, and the reaction time was 10h; then, the crude product was cooled to room temperature and then poured into 300mL ether and stirred for 60min. The yellow transparent viscous liquid sank to the lower layer, discarded the upper layer of ether, repeated the precipitation twice, and rotary evaporated at 60°C under vacuum to obtain h-PAMAM.

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Abstract

The invention relates to a preparation method and application of a hyperbranched polymer with propylene diamine as the initiator. The preparation method includes the following steps that firstly, thepropylene diamine is dissolved in organic solvent, then, methyl acrylate is dropwise added, and an intermediate product is obtained through the Michael addition reaction lasting for 40-60 h at the room temperature; secondly, the temperature of the intermediate product obtained in the first step rises to 50-150 DEG C, the reduced pressure condensation reaction is conducted, and a rough product is obtained; and thirdly, the rough product obtained in the second step is subjected to diethyl ether separation and rotary evaporation, and the hyperbranched polymer with the propylene diamine as the initiator is obtained. The end group of the hyperbranched polymer is an amino group, a large number of amide groups and other structures are contained in the framework, a demulsifying agent can rapidly arrive at the oil-water interface due to the strong hydrophily of the amino group, the amide groups can be adsorbed to the oil-water interface in a multipoint manner, the effect of damaging an oil-water interface film is achieved, and the aim of rapid and efficient demulsifying is achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum additives, in particular to a preparation method and application of a hyperbranched polymer using propylenediamine as a starting agent. Background technique [0002] Polyamidoamine polymers are a kind of well-researched dendritic branched polymers (Dendriticpolymer). In 2005, Tomalia et al. (Progress in Polymer Science.2005,30,294-324.) Polymer (denoted as PAMAM), this type of polymer usually uses ammonia or ethylenediamine as the core, the molecular weight is up to 930000g / mol, and the polydispersity is less than 1.8, it is a colorless to light yellow liquid macroscopically, volatile Low, kinematic viscosity at 25°C is 10-10000mm 2 / s. [0003] Hyperbranched polymers are similar in structure to dendrimers, and have aroused great interest of scientists because of their unique structural features, such as low viscosity, high rheology, good solubility, and a large number of modifiable terminal f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C10G33/04
Inventor 张丽锋何桂金应好詹宁宁方文军郭永胜
Owner ZHEJIANG UNIV
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