Compound antimicrobial and preparation method thereof

A composite antibacterial agent and guanidinium salt polymer technology, which is applied in the field of antibacterial agents and their preparation, can solve the problems of difficult large-scale petrochemical resin plant promotion, complex process, cumbersome steps, etc., and achieve easy industrial promotion, simple method, and broad-spectrum sterilization Effect

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As can be seen from the above patents, the conditions for preparing guanidinium salt polymer powdered antibacterial agents in CN101037503A and CN1350022A are relatively harsh and the process is more complicated; patents CN1445270A, CN1569923A, US 7282538B2 utilize guanidinium salt polymers to prepare antibacterial plastics, which need to be prepared first Antibacterial masterbatch, the steps are relatively cumbersome, resulting in high cost, and it is also difficult to promote in large petrochemical resin factories to produce special antibacterial grade materials

Method used

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  • Compound antimicrobial and preparation method thereof

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Effect test

Embodiment 1

[0032] Weigh 60.0 g of inorganic montmorillonite (Zhejiang Fenghong Clay Chemical Co., Ltd. DK4, sheet thickness 20-30 nm, sheet width 1 μm-30 μm), and add it to 20.0 g of polyhexamethylene methylguanidine propionate (Shanghai Gao Polyguanidine P3000) aqueous solution (concentration is 10%), heated to 80 ° C, vigorously stirred for 8 hours, then put the suspension in an oven to dry, and put the dried product into a pulverizer to pulverize to obtain polyguanidine / monopolyguanidine The soil-removing composite antibacterial agent (composite antibacterial agent 1), wherein the weight ratio of polyhexamethylene guanidine propionate and montmorillonite is 1:3.

Embodiment 2

[0034] With inorganic modification montmorillonite 80.0g (same as embodiment 1), join the aqueous solution (concentration is 10%) of 20.0g polyhexamethylene guanidine propionate (same as embodiment 1), other steps are with embodiment 1 . Obtain polyguanidine / montmorillonite composite antibacterial agent (composite antibacterial agent 2), wherein the weight ratio of polyhexamethylene guanidine propionate and montmorillonite is 1:4.

Embodiment 3

[0036] Take by weighing zeolite 1000.0g (ZSM-5 of Tianjin Dyestuff Factory, particle diameter 300nm~2 μm), join in the aqueous solution (concentration is 30%) that contains 300.0g polyhexamethylene guanidine propionate (with embodiment 1), Dry using spray drying equipment. The inlet temperature is set at 170°C, the outlet temperature is set at 80°C, and the ejected product is polyguanidine / zeolite composite antibacterial agent (composite antibacterial agent 3), wherein the weight ratio of polyhexamethyleneguanidine propionate to zeolite is 1 : 3.3.

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Abstract

The invention provides a compound antimicrobial and a preparation method thereof. The compound antimicrobial comprises micro-nano particles and guanidine polymers by the weight ratio of 1:1 to 1:50, wherein the micro-nano particles at least have the one-dimensional average dimension of 1nm to 1000 mu m; the guanidine polymers are coated on the surfaces of the micro-nano particles and/or embedded in holes or among layers of the micro-nano particles; inorganic or organic particles comprising micro-nano particles are added to a solution of the guanidine polymers; organic alkali is added or not added; the particles and the solution are uniformly mixed and dried for obtaining the compound antimicrobial. When applied to plastics, fibers and rubber, the antimicrobial has high sterilization efficiency, also largely reduces the processing cost of antibacterial materials, and has simple and convenient preparation method.

Description

technical field [0001] The invention relates to an antibacterial agent and a preparation method thereof. Specifically, it relates to an antibacterial agent that can be used on plastics, fibers and rubber and a preparation method thereof. technical background [0002] Guanidine salt polymer (polyguanidine) is a polymer based on guanidinium groups. It is a broad-spectrum, high-efficiency, non-toxic, non-irritating, mild and harmless to the human body. It is widely used in the sterilization and disinfection of textiles, agriculture, food, hospitals, plastics, rubber, fibers and other fields, and has become a research hotspot in the field of sterilization in recent years. The existing guanidinium salt polymer types include polyhexamethylene (bi)guanidine hydrochloride, polyhexamethylene (bi)guanidine propionate, polyhexamethylene (bi)guanidine stearate, Or other inorganic acid salts and organic acid salts of polyhexamethylene (bi)guanidine, polyoxyethylene guanidine, etc., and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00A01N47/44A01P1/00
Inventor 李杰张师军张薇张丽英刘涛张浩尹华邵静波王小兰李魁吕明福邹浩杨庆泉张洪波徐萌陈力吕芸
Owner CHINA PETROLEUM & CHEM CORP
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