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A kind of antibacterial styrene-acrylic emulsion containing double quaternary ammonium salt structure and its preparation method and application

A technology of double quaternary ammonium salt and styrene-acrylic emulsion, applied in the field of coatings, can solve the problems of bacterial resistance, adverse effects of emulsion performance, large amount of antibacterial agent added, etc. The effect of improved performance

Active Publication Date: 2022-04-05
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the existing non-dissolution antibacterial styrene-acrylic emulsion with large amount of antibacterial agent, which will have adverse effects on the performance of the emulsion, and induce bacterial drug resistance, etc., the primary purpose of the present invention is to provide a diquaternary ammonium salt-containing Structured (meth)acrylate antibacterial monomer and preparation method thereof

Method used

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  • A kind of antibacterial styrene-acrylic emulsion containing double quaternary ammonium salt structure and its preparation method and application
  • A kind of antibacterial styrene-acrylic emulsion containing double quaternary ammonium salt structure and its preparation method and application
  • A kind of antibacterial styrene-acrylic emulsion containing double quaternary ammonium salt structure and its preparation method and application

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Embodiment 1

[0045] Embodiment 1: the preparation of antibacterial styrene-acrylic emulsion 1 containing double quaternary ammonium salt structure

[0046] The theoretical solid content of the antibacterial styrene-acrylic emulsion 1 containing the double quaternary ammonium salt structure prepared by the present embodiment is 25.0wt%. Described structural formula (I), m=6, n=4, i=5, R 1 = Propyl, R 2 = hydrogen, X is chlorine) content is 1.3wt%, and preparation method comprises the steps:

[0047] (1) double quaternary ammonium salt alkyl alcohol B (see the structural formula (III) for the structure, m=6, n=4, i=5, R 1 = propyl group, X is the synthesis of chlorine): add 31.42g (0.1mol) bis-tertiary amine alkanol A (structure sees said structural formula (II) in there-necked flask, m=6, n=4, R 1 =propyl), 24.12 g (0.2 mol) of 1-chlorohexane and an appropriate amount of dimethyl sulfoxide were stirred and reacted at 120° C. for 72 hours. Cool to room temperature, after the reaction fin...

Embodiment 2

[0053] Embodiment 2: the preparation of the antibacterial styrene-acrylic emulsion 2 containing double quaternary ammonium salt structure

[0054] The theoretical solid content of the antibacterial styrene-acrylic emulsion 2 containing the double quaternary ammonium salt structure prepared in this embodiment is 35wt%, and the methacrylate antibacterial monomer C (MEQAI-18 containing the double quaternary ammonium structure in the emulsion, see Said structural formula (I), m=4, n=3, i=17, R 1 = ethyl, R 2 =methyl, X is iodine) content is 3.5wt%, and preparation method comprises the steps:

[0055] (1) double quaternary ammonium salt alkyl alcohol B (see the structural formula (III) for the structure, m=4, n=3, i=17, R 1 = ethyl, X is iodine) synthetic: in three-necked flask, add 23.02g (0.1mol) bis-tertiary amine alkyl alcohol A (structure sees said structural formula (II), m=4, n=3, R 1 =ethyl), 228.23 g (0.6 mol) of 1-iodoctadecane and an appropriate amount of tetrahydrofu...

Embodiment 3

[0061] Embodiment 3: the preparation of the antibacterial styrene-acrylic emulsion 3 containing double quaternary ammonium salt structure

[0062] The theoretical solid content of the antibacterial styrene-acrylic emulsion 3 containing the double quaternary ammonium structure prepared by the present embodiment is 50wt%, and the methacrylate antibacterial monomer C (MEQABr-14 containing the double quaternary ammonium structure in the emulsion, see structure Said structural formula (I), m=2, n=1, i=13, R 1 = methyl, R 2 =methyl, X is bromine) content is 7.5wt%, and preparation method comprises the steps:

[0063] (1) double quaternary ammonium salt alkyl alcohol B (see the structural formula (III) for structure, m=2, n=1, i=13, R 1 =methyl, X is the synthesis of bromine): in the there-necked flask, add 13.22g (0.1mol) two tertiary amino alkanols A (structure sees said structural formula (II), m=2, n=1, R 1 =methyl), 110.92 g (0.4 mol) of 1-tetradecane bromide and an appropria...

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Abstract

The invention discloses an antibacterial styrene-acrylic emulsion containing a double quaternary ammonium salt structure, a preparation method and application thereof. A kind of antimicrobial styrene-acrylic emulsion containing double quaternary ammonium salt structure of the present invention, by 85~131 mass parts styrene, 142~218 mass parts butyl acrylate, 3~25 mass parts (meth)acrylic acid, 13~ 75 parts by mass of (meth)acrylic ester monomer containing diquaternary ammonium salt structure, 7-45 parts by mass of emulsifier, 1-7 parts by mass of initiator and 430-740 parts by mass of deionized water are obtained by emulsion polymerization. The (meth)acrylate antibacterial monomer containing the double quaternary ammonium salt structure of the present invention can endow the styrene-acrylic emulsion with durable antibacterial properties, and it can improve the stability, solid content, The emulsion properties such as gel ratio and monomer conversion rate are basically not affected. The antibacterial styrene-acrylic emulsion containing the double quaternary ammonium salt structure of the invention can be used to prepare latex paint with durable antibacterial properties.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an antibacterial styrene-acrylic emulsion containing a double quaternary ammonium salt structure and a preparation method and application thereof. Background technique [0002] The wall is the place we often touch in our daily life, and it is also the place where microorganisms are most likely to gather, especially the walls in hospitals gather a large number of harmful pathogenic bacteria. When people touch these germs with their hands, it is very easy to cause Self-infection and the spread of germs among the population. Therefore, endowing the wall with antibacterial ability is the key to the prevention and control of microbial infection and spread. One of the simplest and most effective methods is to apply a layer of antibacterial latex paint on the top layer of the wall. Therefore, antibacterial modification of latex paint is not only of practical value, but al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C271/16C07C269/02A01N47/12A01N33/12A01P1/00C08F220/18C08F212/08C08F220/34C08F220/06C09D133/08C09D5/02C09D5/14
CPCC07C271/16C07C269/02A01N47/12A01N33/12C08F220/1804C09D133/14C09D5/02C09D5/14C08F212/08C08F220/343C08F220/06
Inventor 刘芳周晓沛熊绍泊何经纬周复荣向慧
Owner SOUTH CHINA UNIV OF TECH