A kind of amphiphilic hyperbranched polymer and its preparation and application

A hyperbranched polymer, amphiphilic technology, used in fuel additives, liquid carbon-containing fuels, petroleum industry, etc., to achieve the effects of accelerated collision, strong adsorption capacity, and reduced strength

Active Publication Date: 2020-03-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing branched demulsifiers can only make the water phase achieve a good deoiling rate while the oil phase is still in the state of emulsion

Method used

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  • A kind of amphiphilic hyperbranched polymer and its preparation and application
  • A kind of amphiphilic hyperbranched polymer and its preparation and application
  • A kind of amphiphilic hyperbranched polymer and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: NH 2 (CH 2 ) 5 CONH(CH 2 ) 5 COOH preparation

[0038] (1) Dissolve 3g of the compound of formula (a) in DMF, add 4.9g of potassium carbonate, and drop 2g of methanol to react overnight to obtain the compound of formula (b);

[0039]

[0040] (2) Spin-dry the product in step (1) and dissolve it in methanol again, add a certain amount of Pd / C, overnight under the protection of hydrogen, and obtain the compound of formula (c) after suction filtration;

[0041]

[0042] (3) Then take 3g of compound of formula (a) dissolved in chloroform, add 1.5g of compound of formula (c) and react at 70°C for 3h, evaporate the solution to dryness, dissolve it in a mixed solution of water and tetrahydrofuran and add a small amount of LiOH, After reacting for 6 hours, dilute HCl was added dropwise to adjust the pH to acidic, and then hydrogenated and reduced with Pd / C to obtain the product NH 2 (CH 2 ) 5 CONH(CH 2 ) 5 COOH.

[0043] Its structural formula is as ...

Embodiment 2

[0045] Embodiment 2: amphiphilic hyperbranched polymer (HPEI-am-C 12 )preparation

[0046] Take 4g NH 2 (CH 2 ) 5 CONH(CH 2 ) 5 COOH was dissolved in 30mL of methanol, 2.83g of CDI was weighed and added to the reaction system, stirred until it was dissolved, and a mixed solution was obtained. Dissolve 2.5g of HPEI in 10mL of methanol, then add it dropwise to the mixture, and carry out amidation reaction at 55°C for 9h to obtain a crude product with a high degree of polymerization; subsequently, the crude product is cooled to room temperature Then pour it into 250mL acetone and stir for 60min. It can be observed that the yellow transparent viscous liquid sinks to the lower layer. The upper layer of acetone is discarded, and the precipitation is repeated twice. The HPEI-am-C can be obtained by rotary evaporation at 50°C under vacuum. 12 .

[0047] Amphiphilic hyperbranched polymer (HPEI-am-C 12 ) structure diagram, such as figure 1 As shown, it should be noted that sinc...

Embodiment 3～8

[0049] Refer to Example 2 to prepare the amphiphilic hyperbranched polymer. The specific process parameters are shown in Table 1, and the amphiphilic hyperbranched polymer can be obtained. NH 2 (CH 2 ) 5 CONH(CH 2 ) 5 COOH is denoted as a in the table below.

[0050] Table 1: Comparison of preparation process parameters of Examples 2-8

[0051]

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PUM

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Abstract

The invention relates to an amphiphilic hyperbranched polymer as well as preparation and application thereof. The core of the amphiphilic hyperbranched polymer is hyperbranched polyethyleneimine withstrong hydrophilic property, wherein partial end amino of the hyperbranched polyethyleneimine is grafted with carboxyl on NH2(CH2)5CONH(CH2)5COOH by virtue of amido bonds. When the amphiphilic hyperbranched polymer serves as a demulsifier, the oil-in-water emulsion reaches the aqueous oil content of lower than 5% in a short time under the condition that the addition amount of the demulsifier is small. Meanwhile, the oil phase moisture content can be as low as 1% or less, the residual emulsion layer is extremely thin even disappears, and a clear oil-water interface is formed.

Description

technical field [0001] The invention relates to the technical field of petroleum additives, in particular to an amphiphilic hyperbranched polymer and its preparation and application. Background technique [0002] Hyperbranched polyethyleneimine (HPEI) is a class of hyperbranched polymers (Hyperamanched polymers) that have been studied relatively maturely, are cheap, and have been produced industrially. HPEI is a highly branched polymer with a viscous liquid that has very little viscosity in solvents. Compared with other polymers, it has good thermal stability. Thermogravimetric analysis shows that it does not decompose in air below 300°C, has good solubility, and has a large number of amino groups at the end of the branch chain. [0003] Due to its novel structure, unique performance and potential application prospects, this kind of polymer has been widely concerned by the scientific and industrial circles once it comes out. In terms of grafting, hyperbranched polymers tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/04C10L1/236C10L10/18
CPCC08G73/0206C08G73/0213C10L1/236C10L10/18
Inventor 闫澍李亚何桂金方文军郭永胜赵辉
Owner ZHEJIANG UNIV
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