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Antibacterial hydrophobic polymer as well as preparation method and application thereof

A polymer and hydrophobic technology, which is applied in the field of antibacterial materials, can solve the problems that antibacterial products cannot maintain antibacterial effect, washable service life, poor heat resistance, etc., and achieve long-lasting antibacterial effect of materials, long-lasting antibacterial effect, antibacterial The effect of excellent performance

Pending Publication Date: 2021-12-21
河北亮能生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In related technologies, guanidine-based polymers, as a class of organic antibacterial materials with good antibacterial effects, have the advantages of a wide range of antibacterial, but there are also problems such as poor heat resistance, easy dissolution, non-washable and short service life, which limit it. wide application of
[0005] In view of the above-mentioned related technologies, the inventors believe that the guanidine-based polymer is hydrophilic due to the characteristics of its molecular structure, and it is easy to be washed off by water when it is used in the fields of plastics and textiles for surface antibacterial, which leads to its production. Antibacterial products cannot maintain long-lasting antibacterial effect

Method used

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  • Antibacterial hydrophobic polymer as well as preparation method and application thereof
  • Antibacterial hydrophobic polymer as well as preparation method and application thereof
  • Antibacterial hydrophobic polymer as well as preparation method and application thereof

Examples

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preparation example 1

[0049]Guanidine-based polymers, including polyhexamethyleneguanidine hydrochloride, the preparation method of polyhexamethyleneguanidine hydrochloride is as follows:

[0050] Feed 93g of hexamethylenediamine and guanidine hydrochloride at a molar ratio of 0.8:1.1, then raise the temperature to 170°C, and react for 6 hours to obtain polyhexamethyleneguanidine hydrochloride.

preparation example 2

[0052] Guanidine-based polymers, including polyhexamethylene biguanide hydrochloride, the preparation method of polyhexamethylene biguanide hydrochloride is as follows:

[0053] A1. Add hydrochloric acid dropwise to 100 g of hexamethylenediamine, control the pH value of the solution to 5, continue the reaction for 1 hour after the addition, filter and dry to make hexamethylenediamine hydrochloride;

[0054] A2. Polyhexamethylenediamine hydrochloride and 100 g of sodium dicyandiamide in a molar ratio of 1.1:1 were polymerized at 145° C. for a reaction time of 11 hours to obtain polyhexamethylene biguanide hydrochloride.

Embodiment 1

[0057] A kind of antibacterial hydrophobic polymer, adopts following preparation method,

[0058] S1, 5g of guanidine-based polymer was dissolved in 25g of water, the mass ratio of guanidine-based polymer to water was 1:5, stirred until the guanidine-based polymer was completely dissolved to obtain a guanidinium salt solution;

[0059] S2, the guanidinium salt solution is placed in a water bath at 35°C, and 27.5g of a compound with a hydrophobic group is added in the guanidine salt solution, and the mass ratio between the guanidine salt solution and the compound with a hydrophobic group is 1: 1.1, stir for 5 hours, filter and dry to obtain the antibacterial hydrophobic polymer;

[0060] Wherein, the compound with a hydrophobic group in this embodiment is benzenesulfonic acid, and the guanidine-based polymer prepared in Preparation Example 1 is added to S1.

[0061] The synthetic structural formula of the antibacterial hydrophobic polymer of embodiment 1-5 is as follows:

[0...

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Abstract

The invention relates to the technical field of antibacterial materials, and particularly discloses an antibacterial hydrophobic polymer as well as a preparation method and application thereof. The antibacterial hydrophobic polymer comprises a guanidyl polymer and a compound with a hydrophobic group. The preparation method comprises the following steps: S1, dissolving a guanidyl polymer in water according to a mass ratio of the guanidyl polymer to the water of 1: (4-6) to obtain a guanidine salt solution; S2, controlling the temperature to be 30-40 DEG C, and adding a substance with a hydrophobic group into the guanidine salt solution, wherein the mass ratio of the guanidine salt solution to the substance with the hydrophobic group is 1: (0.6-1.5), the substance with the hydrophobic group comprises one of benzenesulfonic acid, 2-naphthalene sulfonic acid, dodecylbenzene sulfonic acid, p-toluenesulfonic acid and p-chlorobenzenesulfonic acid; carrying out stirring for 3-6 h, carrying out filtering and drying, and obtaining the antibacterial hydrophobic polymer. The antibacterial hydrophobic polymer can be used in the field of polymer plastic additives, and has lasting antibacterial performance.

Description

technical field [0001] This application relates to the technical field of antibacterial materials, more specifically, it relates to an antibacterial hydrophobic polymer and its preparation method and application. Background technique [0002] In recent years, the development and use of antibacterial materials is of great significance to improving the living environment of human beings and reducing diseases. There are many kinds of antibacterial materials, which can be divided into inorganic antibacterial materials, organic antibacterial materials and natural antibacterial materials according to their chemical composition. [0003] Guanidine polymer is an organic antibacterial material. The guanidine group in the guanidine polymer is an effective active group that can kill or inhibit many microorganisms. [0004] In related technologies, guanidine-based polymers, as a class of organic antibacterial materials with good antibacterial effects, have the advantages of a wide rang...

Claims

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Application Information

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IPC IPC(8): C08G73/00C08L79/00
CPCC08G73/00C08L79/00
Inventor 王宏义刘康
Owner 河北亮能生物科技有限公司
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