Nuclear shell type long-acting antibacterial emulsion and preparation method thereof

An antibacterial emulsion, core-shell type technology is applied in the field of guanidine salt-containing emulsion and its preparation, which can solve the problems of pollution and unsustainable antibacterial effect, achieve lower film-forming temperature, simple preparation process and lower storage stability Effect

Active Publication Date: 2015-05-06
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a core-shell type long-acting antibacterial emulsion and its preparation method,

Method used

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  • Nuclear shell type long-acting antibacterial emulsion and preparation method thereof
  • Nuclear shell type long-acting antibacterial emulsion and preparation method thereof
  • Nuclear shell type long-acting antibacterial emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] Preparation of polyhexamethyleneguanidine hydrochloride macromonomer (GPHMG):

[0034] Weigh 40 g of polyhexamethylene guanidine hydrochloride with a molecular weight of 500 and dissolve in 60 g of deionized water to prepare a guanidine solution with a mass fraction of 40%; blow nitrogen gas, slowly drop 11.3 g of GMA into the guanidine solution, and continue to Under the protection of nitrogen, the reaction was stirred at room temperature for 24 hours until the oil phase disappeared completely, and it was prepared.

Example Embodiment

[0035] Example 2

[0036] Preparation of polyhexamethyleneguanidine hydrochloride macromonomer (GPHMG):

[0037] Weigh 30g of polyhexamethyleneguanidine hydrochloride with a molecular weight of 700 and dissolve in 70g of distilled water to prepare a 30% guanidine solution; ventilate argon, slowly drop 6.7g of GMA into the guanidine solution, and continue to Under the protection of argon, the reaction was stirred at room temperature for 18h until the oil phase disappeared completely, and it was prepared.

Example Embodiment

[0038] Example 3

[0039] Preparation of polyhexamethylene biguanide hydrochloride macromonomer (GPHMB):

[0040] Weigh 25g of polyhexamethylene biguanide hydrochloride with a molecular weight of 800 and dissolve it in 75g of purified water to prepare a 25% guanidine solution; ventilate with helium, slowly drop 5.1g of GMA into the guanidine solution, and continue to Under the protection of helium, the reaction was stirred at room temperature for 16 hours until the oil phase disappeared completely.

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Abstract

The invention relates to a nuclear shell type long-acting antibacterial emulsion. The nuclear shell type long-acting antibacterial emulsion comprises the following raw material components: water, n-butyl acrylate, isobutyl acrylate, isooctyl acrylate, styrene, methyl methacrylate, vinyl acetate, guanidinium oligomer macromonomers, an emulsifying agent, an initiating agent, a cross-linking agent and sodium bicarbonate. The preparation method comprises the following steps: preparing each raw material component; adding water, the emulsifying agent and isooctyl acrylate into a reactor, stirring, heating to 60-70 DEG C, adding the initiating agent to initiate reaction, and after the emulsion becomes blue, maintaining for 60-120 minutes, so as to obtain a nuclear layer emulsion; maintaining the temperature at 70-80 DEG C, adding n-butyl acrylate, heating to 81-85 DEG C, maintaining the temperature, cooling, and discharging, so as to obtain the nuclear shell type long-acting antibacterial emulsion. According to the preparation method, guanidinium and guazatine oligomers are taken as antibacterial functional groups, and guanidyl serves as a main antimicrobial group, has an obvious antibacterial effect and is very safe to human bodies. The preparation method for the nuclear shell type long-acting antibacterial emulsion is simple, rapid, environmentally friendly and suitable for industrial production, and the operation is easy.

Description

technical field [0001] The invention relates to a guanidine salt-containing emulsion and a preparation method thereof, in particular to a core-shell type long-acting antibacterial emulsion and a preparation method thereof. Background technique [0002] Coatings and varnishes are essential materials for furniture production and home decoration in daily life. The emulsions used in ordinary paints and paints have oily emulsions with good waterproof and stain resistance, but are not environmentally friendly; water-based emulsions are environmentally friendly, but waterproof. The aging resistance is poor, and the most important thing is that neither of them has antibacterial effect. In view of this situation, multiple functions can be achieved by introducing special functional groups, such as introducing guanidinium salt to endow the emulsion with antibacterial effect, and at the same time, it has environmental protection and waterproof performance. [0003] Antibacterial agents...

Claims

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Application Information

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IPC IPC(8): C08F290/00C08F220/18C08F212/08C08F220/14C08F218/08C08F2/24C09D151/08C09D5/14
Inventor 潘远凤肖惠宁
Owner GUANGXI UNIV
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