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A kind of derivative of polyasparagine and its preparation method and application

A technology for polyasparagine and derivatives, which is applied in the field of derivatives of polyasparagine and its preparation, can solve the problems of low biodegradation rate, unsatisfactory physical properties, limited popularization and application, etc., and achieves good inhibition effect, The effect of simple synthesis method and simple raw materials

Active Publication Date: 2021-01-15
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many KHIs have disadvantages such as unsatisfactory physical properties, high raw material costs, and low biodegradability, which to a certain extent limit the promotion and application in the marine industry.
Antifreeze proteins, while ecologically friendly, are rare and expensive

Method used

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  • A kind of derivative of polyasparagine and its preparation method and application
  • A kind of derivative of polyasparagine and its preparation method and application
  • A kind of derivative of polyasparagine and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh 1.0 g of the above-mentioned intermediate product polysuccinimide in a 250 mL round bottom flask, measure 10 mL of DMF to dissolve, and place it in an ice-water bath (0°C) to cool after completely dissolving. Polysuccinimide-based Slowly add 0.022 mol of n-propylamine dropwise, and react in an oil bath at 60°C for 6 h. After the reaction, pour the solution into 250 mL of anhydrous ether to precipitate, wash it several times, and dry it in a vacuum oven. Formula I is obtained.

Embodiment 2

[0047] Weigh 1.0 g of polysuccinimide and dissolve it in 10 mL of DMF. After completely dissolving, slowly add 0.0042 mol of n-hexylamine dropwise in an ice-water bath, react in an oil bath at 70°C for 6 h, cool down to room temperature and then add Add 0.011 mol of 3-diethylamino-1-propylamine dropwise in an ice-water bath (excess 3-diethylamino-1-propylamine helps the obtained product formula II satisfy x / y = 7 / 3), react at 30°C After 24 hours, after the reaction, the solution was poured into anhydrous ether to precipitate, washed several times, and dried in a vacuum oven to obtain formula II (m=5).

Embodiment 3

[0049] Weigh 1.0 g of polysuccinimide and dissolve it in 10 mL of DMF. After completely dissolving, slowly add 0.0042 mol of n-heptylamine dropwise in an ice-water bath, react in an oil bath at 70°C for 6 h, cool down to room temperature and then Add 0.011 mol 3-diethylamino-1-propylamine dropwise in an ice-water bath (excess 3-diethylamino-1-propylamine helps to obtain product formula II satisfying x / y = 7 / 3), and react at 30°C After 24 hours, after the reaction, the solution was poured into anhydrous ether to precipitate, washed several times, and dried in a vacuum oven to obtain formula II (m=6).

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Abstract

The invention relates to the field of water-soluble polymers, in particular to a derivative of polyasparagine and its preparation method and application. The polyasparagine derivative of the invention has the characteristics of simple synthesis method, simple and easy-to-obtain raw materials and mild reaction conditions. A polyasparagine derivative of the present invention can be used as an inhibitor of natural gas hydrate.

Description

technical field [0001] The invention relates to the field of water-soluble polymers, in particular to a derivative of polyasparagine and its preparation method and application. [0002] technical background [0003] Gas hydrates have always been a major problem in the process of extracting natural gas from the ocean. Submarine natural gas will form in large quantities with seawater under low temperature and high pressure, which will bring difficulties to mining operations, storage and transportation. When the volume of hydrate is too large and the quantity is too large, it will affect the smoothness of the transportation pipeline, resulting in shutdown or safety accidents in the exploitation of natural gas. Gas hydrate deposits also pose a serious threat to the global climate. A certain amount of methane hydrate that exists in the Arctic region and in the ocean, if decomposed in the atmosphere, may have an adverse effect on the global climate, resulting in a serious greenho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10
CPCC08G73/1092
Inventor 董坚王庆毓
Owner SHAOXING UNIVERSITY