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A kind of bio-based antibacterial coating and preparation method thereof

An antibacterial coating, bio-based technology, applied in the field of coatings, can solve the problems of coating failure and poor heat resistance, and achieve the effects of overcoming poor heat resistance, wide application, and increasing crosslinking density

Active Publication Date: 2020-09-08
SHENYANG SHUNFENG IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial coating of the present invention is a comprehensive antibacterial coating that integrates sterilization and antibacterial. It has good antibacterial properties, stable chemical properties, and good heat resistance, which can overcome the traditional bio-based antibacterial coatings. The disadvantages of coating failure caused by a series of problems caused by poor thermal performance

Method used

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  • A kind of bio-based antibacterial coating and preparation method thereof
  • A kind of bio-based antibacterial coating and preparation method thereof
  • A kind of bio-based antibacterial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Synthesis of "triple antibacterial efficacy" antibacterial macromolecules.

[0024] Put 120ml of DMSO as the reaction solution in a 250ml three-necked flask, add 9g of DL-tartar and 2g of p-benzenesulfonic acid as a catalyst under the condition of starting the stirrer (rotating speed 180r / min), and cool down to 0°C in an ice-water bath. Then 6 g of sulfaguanidine was added, reacted at room temperature for 3 h, filtered, washed with deionized water three times, and the product was dried in a vacuum oven to obtain a white powder sample.

[0025] ②Put 100ml of N,N-dimethylformamide (DMF) as the reaction solution in a 250ml three-necked flask, and add 5g of the above white powder sample and thionyl chloride under the condition of starting the stirrer (speed 150r / min). 1.2g, heat up to 110°C, then add 6g daidzein, stir for 4 hours, take out the reaction solution, wash with methanol and deionized water for 3-4 times, and dry in a vacuum oven to obtain "triple antibacter...

Embodiment 2

[0029] (1) Synthesis of "triple antibacterial efficacy" antibacterial macromolecules.

[0030] Put 120ml of DMSO as the reaction solution in a 250ml three-necked flask, add 9g of DL-tartar and 2g of p-benzenesulfonic acid as a catalyst under the condition of starting the stirrer (rotating speed 180r / min), and cool down to 0°C in an ice-water bath. Then 6 g of sulfaguanidine was added, reacted at room temperature for 3 h, filtered, washed with deionized water three times, and the product was dried in a vacuum oven to obtain a white powder sample.

[0031] ②Put 100ml of N,N-dimethylformamide (DMF) as the reaction solution in a 250ml three-necked flask, and add 5g of the above white powder sample and thionyl chloride under the condition of starting the stirrer (speed 150r / min). 1.2g, heat up to 110°C, then add 6g daidzein, stir for 4 hours, take out the reaction solution, wash with methanol and deionized water for 3-4 times, and dry in a vacuum oven to obtain "triple antibacter...

Embodiment 3

[0035] (1) Synthesis of "triple antibacterial efficacy" antibacterial macromolecules.

[0036] Put 120ml of DMSO as the reaction solution in a 250ml three-necked flask, add 9g of DL-tartar and 2g of p-benzenesulfonic acid as a catalyst under the condition of starting the stirrer (rotating speed 180r / min), and cool down to 0°C in an ice-water bath. Then 6 g of sulfaguanidine was added, reacted at room temperature for 3 h, filtered, washed with deionized water three times, and the product was dried in a vacuum oven to obtain a white powder sample.

[0037] ②Put 100ml of N,N-dimethylformamide (DMF) as the reaction solution in a 250ml three-necked flask, and add 5g of the above white powder sample and thionyl chloride under the condition of starting the stirrer (speed 150r / min). 1.2g, heat up to 110°C, then add 6g daidzein, stir for 4 hours, take out the reaction solution, wash with methanol and deionized water for 3-4 times, and dry in a vacuum oven to obtain "triple antibacter...

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Abstract

The invention discloses bio-based antibacterial coating and a preparation method thereof. The bio-based antibacterial coating is characterized by being prepared from the following components: an antibacterial macromolecule, waterborne epoxy emulsion, a de-foaming agent, an antioxidant, a waterborne curing agent and de-ionized water, wherein the antibacterial macromolecule is prepared through covalent bonding of sulfaguanidine, DL-tartaric acid and glycitin; then the antibacterial macromolecule is grafted on an epoxy resin matrix to form the bio-based antibacterial coating. The bio-based antibacterial coating prepared by the method integrates sterilization and bacterium inhibition and has relatively good antibacterial performance, stable chemical performance and relatively good heat-resisting performance; and the defect that a coating layer becomes invalid, caused by a series of problems of poor heat-resisting performance of traditional bio-based antibacterial coating, can be overcome.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a multiple bio-based environmental protection antibacterial coating with good bonding force with substrate, good antibacterial effect, non-toxic and environmental protection, wide source of raw materials and low price. Background technique [0002] By forming plaques, microorganisms will erode the coating, causing the coating to lose its adhesion, thereby losing its protection and modification of the substrate. After a large number of growth, it will expose people to a multi-bacteria environment, which is harmful to humans. Health hazards, antibacterial coatings with antibacterial agents added to the coating can effectively inhibit and kill bacteria and avoid the above-mentioned negative effects. [0003] At present, antibacterial agents in antibacterial coatings are mainly divided into three categories: inorganic antibacterial agents, organic antibacterial agents and natural an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/14C08G83/00
Inventor 刘春峰葛晶于海舒沙世强陈栋
Owner SHENYANG SHUNFENG IND GRP CO LTD
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