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Preparation method of plastic long-acting mildew preventive

A kind of antifungal agent, long-acting technology, applied in the field of antifungal agent for plastics, can solve the problems of generally above 200 ℃, some even as high as 280 ℃, affecting the appearance of products, low temperature resistance, etc., to achieve easy processing, sterilization Good effect, the effect of reducing flow temperature and melt viscosity

Inactive Publication Date: 2020-12-25
黄山佳宝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although inorganic antifungal agents can withstand high temperatures in the plastic processing process (generally above 200°C, some even as high as 280°C), most of them are colored, which affects the appearance of the product
However, organic antibacterial agents such as IPBC, DCOIT, ZPT, and carbendazim have low temperature resistance, are easy to change color at high temperatures, and have poor compatibility with certain polymer materials; although OBPA is high temperature resistant, it has good anti-mildew effect. However, it is an arsenic compound, so there are some doubts about its safety; BBIT has good performance in all aspects, but it is expensive

Method used

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  • Preparation method of plastic long-acting mildew preventive
  • Preparation method of plastic long-acting mildew preventive
  • Preparation method of plastic long-acting mildew preventive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] See attached figure 1 Shown, according to the preparation method of a kind of plastic long-acting fungicide of the embodiment of the present invention, comprising:

[0028] The anti-mildew active substance is pulverized and passed through an 80-mesh sieve;

[0029] Pulverize the polycarbonate, plasticizer, antioxidant, slow-release framework material, inert auxiliary agent, and heat stabilizer separately, and pass through an 80-mesh sieve;

[0030] According to the proportion, the antifungal active substance is mixed with polycarbonate, plasticizer, antioxidant, slow-release matrix material, inert auxiliary agent, and heat stabilizer respectively and dissolved in chloroform; then at a temperature of 180 ° C, with The plastic polymer is mixed according to the ratio of 1:20, dried and crushed to make a plastic long-acting fungicide.

[0031] Specifically, the antifungal active substance includes: 1-phenyl-N,N-bis{[1-(1,3,4-thiadiazol-2-yl)-1H-pyrrol-2-yl]formazol Base}...

Embodiment 2

[0033] See attached figure 1 Shown, according to the preparation method of a kind of plastic long-acting fungicide of the embodiment of the present invention, comprising:

[0034] The anti-mildew active substance is pulverized and passed through a 140-mesh sieve;

[0035] Pulverize the polycarbonate, plasticizer, antioxidant, slow-release framework material, inert auxiliary agent, and heat stabilizer separately, and pass through a 140-mesh sieve;

[0036] According to the proportion, the antifungal active substance is mixed with polycarbonate, plasticizer, antioxidant, slow-release matrix material, inert auxiliary agent, and heat stabilizer respectively and dissolved in ethanol; then polymerized with plastic at 200°C The mixture is mixed according to the ratio of 1:60, dried and crushed to make a plastic long-acting fungicide.

[0037]Specifically, the antifungal active substance includes: 1-phenyl-N,N-bis{[1-(1,3,4-thiadiazol-2-yl)-1H-pyrrol-2-yl]formazol Base} methylamine...

Embodiment 3

[0039] See attached figure 1 Shown, according to the preparation method of a kind of plastic long-acting fungicide of the embodiment of the present invention, comprising:

[0040] The anti-mildew active substance is pulverized and passed through a 200-mesh sieve;

[0041] Separately pulverize polycarbonate, plasticizer, antioxidant, slow-release framework material, inert auxiliary agent, and heat stabilizer, and pass through a 200-mesh sieve;

[0042] According to the proportion, the antifungal active substance is mixed with polycarbonate, plasticizer, antioxidant, slow-release matrix material, inert auxiliary agent and heat stabilizer respectively and dissolved in chloroform; then at a temperature of 220 ° C, mixed with The plastic polymer is mixed according to the ratio of 1:100, dried and crushed to make a plastic long-acting fungicide.

[0043] Specifically, the antifungal active substance includes: 1-phenyl-N,N-bis{[1-(1,3,4-thiadiazol-2-yl)-1H-pyrrol-2-yl]formazol Bas...

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Abstract

The invention relates to a preparation method of a plastic long-acting mildew preventive, which comprises the following steps: pulverizing a mildew preventive active matter, and screening with a 80-200-mesh sieve; respectively crushing polycarbonate, a plasticizer, an antioxidant, a slow-release framework material, an inert auxiliary agent and a heat stabilizer, and sieving with an 80-200-mesh sieve; respectively mixing the mildew preventive active matter with the polycarbonate, the plasticizer, the antioxidant, the slow-release framework material, the inert auxiliary agent and the heat stabilizer according to a ratio, and dissolving the mixture into trichloromethane and / or ethanol; and mixing the mixture with a plastic polymer according to a ratio of 1: 20-100 at a temperature of 180-220DEG C, drying, and crushing to prepare the plastic long-acting mildew preventive. The mildewpreventive disclosed by the invention has a very good sterilization effect on common aspergillus niger, escherichia coli, mucor and candida, and the mildew preventive active matter is coated with the slow-release framework material, so that the sterilization lasting time is longer.

Description

technical field [0001] The invention relates to the technical field of anti-mold inhibitors for plastics, in particular to a preparation method of long-acting anti-mold agents for plastics. Background technique [0002] With the progress of human society, plastic products occupy an increasingly important position in daily life. However, various additives added to plastic products are easily polluted by bacteria and molds during use, which directly leads to the spread and spread of harmful bacteria, which is not conducive to people's health. As an additive, the antifungal agent enters the cell through the cell membrane of the spore, destroys the spore or prevents it from germinating to prevent the growth of mold. At present, plastic antifungal agents are generally divided into two categories: inorganic antifungal agents and organic antifungal agents. Although inorganic antifungal agents can withstand the high temperature in the plastic processing process (generally above 20...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/06C08K9/10C08K5/46C08K5/3472C08K5/47C08K3/26C08K5/098
CPCC08K13/06C08K9/10C08K5/46C08K5/3472C08K5/47C08K3/26C08K5/098C08K2003/265C08L69/00
Inventor 徐晨王志勇刘金涛张挺汪一瑱
Owner 黄山佳宝新材料科技有限公司
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