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A kind of antibacterial polymer and preparation method thereof

A technology of polymers and polyols, applied in polyamide coatings, anti-media-borne diseases, coatings, etc., can solve problems such as insufficient water resistance and washing resistance, unfavorable environmental protection, and human skin irritation

Active Publication Date: 2019-08-30
GUILIN PRENOVO ANTIBACTERIAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But although this master batch has good anti-mold effect, there is the problem of insufficient water resistance and washing resistance like most organic antibacterial agents (the water solubility of the guanidine structure makes this problem more significant), and the existing ones including CN1111556C Most antibacterial masterbatches use toxic / irritating raw materials such as polyamines, the sewage waste produced is not good for environmental protection and the possible residues on the product will irritate human skin

Method used

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  • A kind of antibacterial polymer and preparation method thereof
  • A kind of antibacterial polymer and preparation method thereof
  • A kind of antibacterial polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 The preparation of the application's antibacterial masterbatch

[0027] 1.1 Take 124g of ethylene glycol and 260g of guanidine nitrate, add them into the reaction kettle, mix well, under the protection of nitrogen, adjust the pH to 5 with hydrochloric acid, heat to 120°C, react for 3h, then add 30g of acrylic acid, carry out esterification reaction for 1h, end reaction. Granulate.

[0028] The molecular weight of the product is about 8300, the thermal decomposition temperature is about 340°C, and the infrared spectrum shows the proper characteristic absorption peak.

[0029] 1.2 Take 118g of 1,6-hexanediol and 100g of guanidine hydrochloride, add them into the reaction kettle, mix evenly, under the protection of nitrogen, adjust the pH to 3 with hydrochloric acid, heat to 150°C, react for 2 hours, then add 20g of propylene oxide acrylic acid, The esterification reaction was carried out for 2h, and the reaction was terminated. Granulate.

[0030] The mol...

Embodiment 2

[0033] Example 2 Use the antibacterial masterbatch of the present application to prepare PPR injection molding materials

[0034] The specific preparation of injection molding materials is completed by cooperative enterprises; the antibacterial masterbatch of CN1111556C is prepared according to the embodiment 1 in the open text; the antibacterial masterbatch of the application is prepared according to the method of embodiment 1; PP-R resin raw material particles, methyl phenyl Silicone oil, polypropylene wax (molecular weight 12,000), and talc powder (3,000 mesh) are all conventional types purchased from Ningbo Zhenhai Bestus Plastics Co., Ltd. and Shanghai Yuxi Industrial Co., Ltd.; the injection molding machine is Yujiang YJ88 horizontal injection molding machine.

[0035] Material 1: For every 100 parts by weight of PPR particles, add 3 parts by weight (1.1) of the antibacterial masterbatch of the present application, 0.2 parts by weight of methylphenyl silicone oil, 0.3 pa...

Embodiment 3

[0048] Embodiment 3 Injection molding material antibacterial performance detection

[0049] The antibacterial performance test was carried out by the Antibacterial Material Testing Center of the Institute of Physics and Chemistry, Chinese Academy of Sciences. The experiment basically followed the national light industry standard QB / T2591-2003 of the People's Republic of China. To detect bacteria and Candida albicans: spread the sterilized polyethylene film on the On the plastic sample, it was eluted after 24 hours of cultivation, and after 48 hours of cultivation (72 hours for Candida albicans), the live bacteria were counted according to the method of GB4789.2, and the antibacterial rate was calculated. Mold detection: spread the plastic sheet on the plate culture medium, evenly spray the mold spore suspension, and detect the mold growth coverage area after 28 days of cultivation.

[0050] Bacteria test objects include: Staphylococcus aureus (Staphylococcus aureus) ATCC 6538,...

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Abstract

The invention provides an antibacterial polymer and a preparation method thereof, which are polymerized from polyhydric alcohol and guanidinium salt, and have the following structure: The non-toxic and non-irritating polyol is used as raw material in the preparation method, which is friendly to environment and human body.

Description

[0001] a technical field [0002] The application relates to the fields of organic synthesis and environmental protection. Specifically, the application provides an antibacterial polymer formed by polymerization of non-toxic / non-irritating polyol and guanidinium salt and a preparation method thereof. [0003] Two background technology [0004] Compared with natural materials, chemical materials such as plastics and chemical fibers have the advantages of long life, stable properties, simple manufacturing, light weight, and non-hygroscopicity, so they have become common raw materials for the manufacture of various daily necessities and clothing. In bathrooms, kitchens, bags, clothes, etc., where the above-mentioned chemical materials are commonly used, humidity, heat, and organic matter are relatively abundant, forming an environment that is easy to breed microorganisms. Therefore, it is often necessary to add antibacterial agents to these materials to form antibacterial material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/00
CPCC08G73/00C08G73/02C08L77/00C09D177/00C08G73/0213C08G85/004
Inventor 刘及响赵云瑞李郁聪
Owner GUILIN PRENOVO ANTIBACTERIAL MATERIAL CO LTD