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Microcapsule capable of cladding 2,4-dichloro-3,5-dimethylphenol, as well as preparation and application of microcapsule

A technology of dimethylphenol and microcapsules, which is applied to microcapsule materials and the fields of preparation and application thereof, can solve problems such as human discomfort, achieve long-term antibacterial and antifungal properties, and maintain the effects of antibacterial and antifungal properties.

Inactive Publication Date: 2015-03-25
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 2,4-dichloro-3,5-dimethylphenol has excellent properties. As an antibacterial and antifungal agent, DCMX can be widely used in personal care, environmental disinfection, textiles, papermaking, leather, oil fields and other fields, but its products There are still disadvantages, mainly because of the characteristic odor of phenols, which may cause discomfort to the human body when applied

Method used

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  • Microcapsule capable of cladding 2,4-dichloro-3,5-dimethylphenol, as well as preparation and application of microcapsule
  • Microcapsule capable of cladding 2,4-dichloro-3,5-dimethylphenol, as well as preparation and application of microcapsule
  • Microcapsule capable of cladding 2,4-dichloro-3,5-dimethylphenol, as well as preparation and application of microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] a. Preparation of Microcapsules

[0037] (1) Core material preparation

[0038] Weigh 1g of DCMX into a three-necked flask, pour 5ml of dichloromethane into it, fully dissolve, add 91ml of distilled water, 4ml of Tween 80 and 0.5ml of Span 80, and stir and emulsify at 1800r / min for 30min at room temperature.

[0039] (2) Wall material preparation

[0040] Weigh 1.75g ​​of melamine into a sealable reagent bottle, pipette 3.00ml of 37% formaldehyde solution into the reagent bottle, mix, stir evenly with a magnetic force, add 10% NaOH solution to adjust the pH to 8~9, and then put it in a water bath at 65°C~70°C Heating, after reacting until transparent, add 10ml of distilled water, and continue to react for 50min to obtain a transparent low molecular weight prepolymer.

[0041] (3) Preparation of microcapsules

[0042] Add the obtained prepolymer into the core material emulsion, drop a few drops of defoamer to defoam, stir at 450r / min for 20min, add 10% citric acid dro...

Embodiment 2

[0050] a. Preparation of Microcapsules

[0051] (1) Core material preparation

[0052] Weigh 1g of DCMX into a three-necked flask, pour 6ml of dichloromethane into it, fully dissolve, add 90ml of distilled water, 4ml of Tween 80 and 0.5ml of Span 80, and stir and emulsify at 1800r / min for 30min at room temperature.

[0053] (2) Wall material preparation

[0054] Weigh 1.75g ​​of melamine into a sealable reagent bottle, pipette 3.50ml of 37% formaldehyde solution into the reagent bottle, mix, stir evenly with a magnetic force, add 10% NaOH solution to adjust the pH to 8-9, heat in a water bath at 65°C to 70°C, After the reaction was transparent, 10ml of distilled water was added, and the reaction was continued for 50 minutes to obtain a transparent low molecular weight prepolymer.

[0055] (3) Preparation of microcapsules

[0056] Add the obtained prepolymer into the core material emulsion, drop a few drops of defoamer to defoam, stir at 450r / min for 20min, add 10% citric ac...

Embodiment 3

[0064] a. Preparation of Microcapsules

[0065] (1) Core material preparation

[0066] Weigh 1g of DCMX into a three-necked flask, pour 6ml of dichloromethane into it, fully dissolve, add 90ml of distilled water, 4ml of Tween 80 and 0.5ml of Span 80, stir at 2000r / min at room temperature, and emulsify for 25min.

[0067] (2) Wall material preparation

[0068] Weigh 2g of melamine into a sealable reagent bottle, pipette 3.00ml of 37% formaldehyde solution into the reagent bottle, mix, stir evenly with a magnetic force, add 10% NaOH solution to adjust the pH to 8-9, then heat in a water bath at 65°C to 70°C, After the reaction was transparent, 10ml of distilled water was added, and the reaction was continued for 40 minutes to obtain a transparent low molecular weight prepolymer.

[0069] (3) Preparation of microcapsules

[0070] Add the obtained prepolymer into the core material emulsion, drop a few drops of defoamer to defoam, stir at 500r / min for 20min, add 10% citric acid ...

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PUM

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Abstract

The invention relates to a microcapsule capable of cladding 2,4-dichloro-3,5-dimethylphenol, as well as preparation and application of the microcapsule. The microcapsule comprises a core material and a wall material for cladding the core material. The preparation comprises the following steps: firstly, dissolving 2,4-dichloro-3,5-dimethylphenol (DCMX) into an organic solvent by adopting an in-situ polymerization method to prepare emulsion; secondly, preparing a wall material prepolymer formed by reaction of melamine and formaldehyde; and finally preparing the 2,4-dichloro-3,5-dimethylphenol (DCMX) cladded microcapsule. The microcapsule is applied to antibacterial mildew-proofing finishing of textiles. The microcapsule capable of cladding DCMX provided by the invention can be used for successfully covering the special smell of the DCMX by means of cladding, pores formed in the surface of the microcapsule are capable of providing channels for volatizing and spilling of the DCMX, so that the DCMX can be stored for a long time, and can slowly volatize to keep the durable antibacterial mildew-proofing performance.

Description

technical field [0001] The invention belongs to the field of microcapsule material and its preparation and application, in particular to a microcapsule coated with 2,4-dichloro-3,5-dimethylphenol and its preparation and application. Background technique [0002] 2,4-dichloro-3,5-dimethylphenol (DCMX) has excellent antibacterial and antifungal properties, and has an excellent killing effect on Gram-positive bacteria such as Bacillus subtilis and negative bacteria such as Escherichia coli , It has excellent killing effect on molds such as Aspergillus niger and Aspergillus flavus; 2,4-dichloro-3,5-dimethylphenol has good stability, and DCMX phenol has a stable structure and can be stored conventionally. [0003] 2,4-dichloro-3,5-dimethylphenol has excellent properties. As an antibacterial and antifungal agent, DCMX can be widely used in personal care, environmental disinfection, textiles, papermaking, leather, oil fields and other fields, but its products There are still disad...

Claims

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Application Information

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IPC IPC(8): D06M13/156D06M15/423D06M23/12B01J13/18D06M101/32D06M101/34D06M101/12D06M101/10D06M101/06
Inventor 蔡再生冯磊崔培红陶必成袁万泰王建都姚礼良顾学斌
Owner DONGHUA UNIV
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