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High temperature resisting modified polyhexamethylene guanidine, preparation method and application thereof

A technology of polyhexamethylene guanidine and polyhexamethylene monoguanidine, which is applied in the field of high-temperature-resistant modified polyhexamethylene guanidine and its preparation, can solve the problems of reducing antibacterial efficacy and failing to meet antibacterial standards, etc. Achieve the effects of good antibacterial effect, wide application range and simple preparation process conditions

Active Publication Date: 2017-08-29
河北佩清科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although polyhexamethylene guanidine has good antibacterial properties, it is far from reaching the antibacterial standard of medical product level, and its antibacterial properties need to be further improved
Moreover, medical-grade products need to be sterilized at high temperature when they are reused, but existing medical products with antibacterial properties will reduce antibacterial efficacy at high temperatures

Method used

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  • High temperature resisting modified polyhexamethylene guanidine, preparation method and application thereof
  • High temperature resisting modified polyhexamethylene guanidine, preparation method and application thereof
  • High temperature resisting modified polyhexamethylene guanidine, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0039]

[0040] R 1 = H; R 2 = H; n = 5

[0041] Use polyhexamethylene monoguanidine as raw material, add benzoic acid, the mass ratio of benzoic acid to polyhexamethylene monoguanidine is 0.01:1, carry out grafting reaction under the protection of nitrogen, the reaction temperature is 120°C, normal pressure Stir under low temperature, react for 3 hours, then cool down to 80° C., and the product is obtained after discharging. After grafting, the weight of polyhexamethylene monoguanidine increases by 1%. The melting point of the prepared compound is: the melting point reaches 130-150°C.

Embodiment 2

[0043]

[0044] R 1 = COOH; R 2 =NH 2 ;n=50

[0045] Use polyhexamethylene monoguanidine as raw material, add phthalic anhydride, the mass ratio of phthalic anhydride to polyhexamethylene monoguanidine is 0.001:1, carry out grafting reaction under the protection of nitrogen, the reaction temperature Stir at 180°C under normal pressure, react for 1 hour, then lower the temperature to 100°C, and get the product after discharging. After grafting, the weight of polyhexamethylene monoguanidine increases by 3%. The melting point of the prepared compound is: the melting point reaches 150-180°C.

Embodiment 3

[0047]

[0048] R 1 = H; R 2 =NH 2 ;n=20

[0049] Use polyhexamethylene monoguanidine as raw material, add p-aminobenzoic acid, the mass ratio of aminobenzoic acid to polyhexamethylene monoguanidine is 0.0025:1, carry out grafting reaction under nitrogen protection, and the reaction temperature is 150°C , stirred under normal pressure, reacted for 3 hours, then lowered the temperature to 90° C., and obtained after discharging. After grafting, the weight of polyhexamethylene monoguanidine increased by 2%. The melting point of the prepared compound is: the melting point reaches 130-230°C.

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Abstract

The invention relates to a high temperature resisting modified polyhexamethylene guanidine, a preparation method and an application thereof and belongs to the technical field of disinfection. The high temperature resisting polyhexamethylene guanidine provided by the invention is suitable for application in high polymer materials, such as, plastics, rubber and synthetic fiber. The preparation method comprises the following steps: by taking polyhexamethylene guanidine as a raw material, adding phenyl compound (benzoic acid, benzoyl chloride, methyl benzoate, phthalic anhydride or para aminobenzoic acid), wherein the mass ratio of phenyl compound to polyhexamethylene guanidine is (0.001-0.01):1; performing grafting reaction under nitrogen protection under the reaction temperature of 120-180 DEG C; stirring under normal pressure and reacting for 1-5h, and then reducing the temperature to 80-100 DEG C; discharging, thereby acquiring the high temperature resisting modified polyhexamethylene guanidine. The high temperature resisting modified polyhexamethylene guanidine disclosed by the invention is longer in antibacterial time and better in antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of disinfection, in particular to a high-temperature resistant modified polyhexamethylene guanidine and its preparation method and application. Background technique [0002] Bacterial infection and transmission causing disease and even death is an important problem that threatens human health and survival. To combat the threat of bacteria, disinfectants can be used to sanitize the environment. However, the use of large quantities of disinfectants can pollute the environment. Therefore, the use of products with antibacterial function to prevent the spread of bacteria has received widespread attention. [0003] At present, products with antibacterial function are mainly prepared by blending organic antibacterial agents, inorganic antibacterial agents, organic-inorganic composite antibacterial agents or quaternary ammonium salt polymer antibacterial agents with product materials; it is also possible to make p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/00C07C277/00C07C279/12A01N47/44A01P3/00
CPCA01N47/44C07C277/00C08G73/00C07C279/12
Inventor 王娟贾鹏飞张星辰张伟亮韩伟周丹祎董旭彤王思井栋宇
Owner 河北佩清科技有限公司
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