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Preparation method of polyhexamethylene monoguanidine nitrate

A technology of polyhexamethylene monoguanidine and nitrate, which is applied in chemical instruments and methods, preparation of organic compounds, chemicals for biological control, etc., can solve problems such as metal corrosion and chloride ion precipitation, and achieve Easy industrial production, simple process, good sterilization effect

Inactive Publication Date: 2018-05-25
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since polyhexamethylene monoguanidine hydrochloride will have chloride ion precipitation during use, it will corrode some metals such as carbon steel, etc.

Method used

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  • Preparation method of polyhexamethylene monoguanidine nitrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Preparation of polyhexamethylene monoguanidine nitrate

[0014] 1) Weigh 6.0938g of guanidine nitrate and 5.911g of hexamethylenediamine, add them into a 100mL three-necked bottle, connect the mechanical stirring device, connect the exhaust gas receiving device, stir, raise the temperature and react at 150-160°C for 2 hours, stop stirring, and get viscous Shaped solid was taken out, dried, and crushed to obtain 9.2 g of polyhexamethylene monoguanidine guanidine nitrate powder.

[0015] 2) Weigh 8.0044g of ammonium nitrate, 4.2021g of dicyandiamide, and 11.6215g of hexamethylenediamine into the reaction kettle, connect the mechanical stirring device, connect the tail gas receiving device, stir, raise the temperature and react at 150-160°C for 2 hours, and stop stirring , to obtain a viscous solid, which was taken out, dried, and crushed to obtain 18.0 g of polyhexamethylene monoguanidine guanidine nitrate powder.

[0016] Prepare the solution

[0017] Take by weighing ...

Embodiment 2

[0023] Preparation of polyhexamethylene monoguanidine nitrate

[0024] 1) Calculate the weight of 2mol of guanidine nitrate and hexamethylenediamine, then weigh according to the calculated value, put 1:1 mole of guanidine nitrate and hexamethylenediamine into a 1L three-necked bottle, connect the mechanical stirring device, and connect the tail gas receiving device, Stir, heat up, and react at 170-180°C for 3 hours, stop stirring to obtain a viscous solid, take it out, dry it, and grind it to obtain polyhexamethylene monoguanidine guanidine nitrate powder.

[0025] 2) Calculate the weight of 1 mol of ammonium nitrate, 0.5 mol of dicyandiamide, and 1 mol of hexamethylenediamine, then weigh according to the calculated value, and add 2:1:2 moles of ammonium nitrate, dicyandiamide, and hexamethylenediamine to the reactor , connect the mechanical stirring device, connect the tail gas receiving device, stir, heat up, and react at 170-180°C for 2.5 hours. Stop stirring to obtain a v...

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Abstract

The invention relates to a preparation method of polyhexamethylene monoguanidine nitrate. The preparation method comprises the following steps of putting hexamethylene diamine and guanidine nitrate into a reaction kettle in a molar ratio of 1 to (0.9 to 1.1), heating, agitating, reacting at 140 to 180 DEG C, stopping reacting until no ammonia is discharged, and generating a peculiar-smell-free solid product, the appearance of which is white or faint yellow, through a melt polycondensation reaction, wherein the solid product is the polyhexamethylene monoguanidine nitrate; alternatively, feedingammonium nitrate, dicyandiamide and the hexamethylene diamine in a molar ratio of 2 to (0.9 to 1.1) to (2 to 2.1), adding into the reaction kettle, heating, agitating, reacting at 140 to 180 DEG C, stopping reacting until no ammonia is discharged, and generating the polyhexamethylene monoguanidine nitrate through the melt polycondensation reaction. The preparation method has the advantages of being simple in process, mature in technique and quite easy in industrialized production, and the prepared polyhexamethylene monoguanidine nitrate has a favorable sterilization effect, and is used for sterilizing a common pathogenic strain.

Description

technical field [0001] The invention relates to a polymer and its preparation method, in particular to a preparation method of polyhexamethylene monoguanidine nitrate. Background technique [0002] Guanidine-based disinfectants currently on the market mainly include chlorhexidine, polyhexamethylene biguanide hydrochloride and polyhexamethylene monoguanidine hydrochloride. Researchers have found that polyhexamethylene monoguanidine has a higher bactericidal effect than biguanide; compared with chlorhexidine, it has a more obvious ability to kill bacteria and viruses, and the bactericidal effect lasts longer. Therefore, people's research on polyhexamethylene monoguanidine hydrochloride is in the ascendant. Polyhexamethylene monoguanidine hydrochloride is a high-efficiency bactericide, which can be used as an antibacterial agent for microorganisms on the outer surface of substances, and can be used as a preservative for daily life. However, because polyhexamethylene monoguani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C277/08C07C279/04A01P1/00A01P3/00
CPCC07C277/08C07C279/04
Inventor 贾宏敏于洪梅全艳玲宋伟孙晓龙
Owner UNIV OF SCI & TECH LIAONING