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Sterilization polymer containing quaternary ammonium salt and halamine or halamine precursor functional group as well as preparation method and application of sterilization polymer

A halamine functional and polymer technology, which is applied to the field of bactericidal polymers containing quaternary ammonium salts and halamine or halamine precursor functional groups and the preparation thereof, can solve the problem of low halogen utilization, poor surface hydrophilicity and limited swelling And other issues

Inactive Publication Date: 2013-07-10
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, from the perspective of the chemical structure and spatial structure of the polymer, the 1-chloro-5,5-dimethyl-3-(p-vinylphenylmethylene)hydantoin polymer prepared by the technology of US Patent US7687072B2 And 1-bromo-5,5-dimethyl-3-(p-vinylphenylmethylene) hydantoin polymer resin has poor surface hydrophilicity, limited swelling in water, and the diameter of its internal pores is usually in the Between a few nanometers and dozens of nanometers, and the size of microorganisms such as bacteria generally reaches the micron level, which makes it impossible for bacteria to enter the internal pores of the resin and be killed
At the same time, after the oxidized halogen on the outer surface is consumed due to sterilization, it is difficult for the oxidized halogen on the inner surface to reach the outer surface as soon as possible through the internal pore migration to replenish the consumed oxidized halogen. The utilization rate of the overall effective halogen of the bactericidal resin may be relatively low

Method used

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  • Sterilization polymer containing quaternary ammonium salt and halamine or halamine precursor functional group as well as preparation method and application of sterilization polymer
  • Sterilization polymer containing quaternary ammonium salt and halamine or halamine precursor functional group as well as preparation method and application of sterilization polymer
  • Sterilization polymer containing quaternary ammonium salt and halamine or halamine precursor functional group as well as preparation method and application of sterilization polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This example is the preparation of a macroporous cross-linked resin (PSHTA3) containing quaternary ammonium salt and haloamine precursor functional groups, wherein the molar ratio of reactants 5,5-dimethylhydantoin and trimethylamine is 3: 1.

[0043] Weigh 1.77 g of 5,5-dimethylhydantoin and 1.47 g of sodium carbonate into a 250 ml round bottom flask, dissolve with 20 ml of isopropanol, add macroporous cross-linked poly-p-chloromethylstyrene resin 2.82 g, 0.91 g of 30% trimethylamine aqueous solution was added dropwise under stirring, and stirred and reacted at 60° C. for 12 hours. After the reaction, the macroporous cross-linked resin PSHTA3 containing quaternary ammonium salt and halamine precursor functional groups was obtained by filtration, washed with water for 6 times, and then dried at 45°C to constant weight to obtain 3.67 g of the product. Elemental analysis test values: C, 66.67; H, 7.876; N, 7.16. IR: 3741, 3428, 3022, 2929, 1768, 1708, 1614, 1512, 1488, ...

Embodiment 2

[0045] This example is the preparation of a macroporous cross-linked resin (PSHTA3-Cl) containing quaternary ammonium salt and haloamine functional groups.

[0046] Take by weighing 1.45 grams of PSHTA3 macroporous crosslinked resin prepared in Example 1 and place in a 50-ml beaker, add 14 milliliters of deionized water, stir in an ice bath, slowly drip 6.81 grams of 10% sodium hypochlorite solution, and simultaneously Use 1N hydrochloric acid to adjust the pH value to about 7, and continue to stir and react in the ice bath for 2 hours after the dropwise addition. After the reaction, the macroporous cross-linked resin PSHTA3-Cl containing quaternary ammonium salt and haloamine functional groups was obtained by filtration, washed with water for 6 times, and then dried at 45° C. to constant weight. Determination of oxidized chlorine (Cl) on the resin by iodometric method + ) content is 5.76%. Elemental analysis test values: C, 62.62; H, 6.980; N, 6.32. IR: 3416, 3024, 2929, 1...

Embodiment 3

[0048] This example is the preparation of a macroporous cross-linked resin (PSHTA3-Br) containing quaternary ammonium salt and haloamine functional groups.

[0049] Take by weighing 1.46 grams of PSHTA3 macroporous cross-linked resin prepared in Example 1 and place in a 50-ml beaker, add 14 ml of deionized water and 1.12 g of potassium bromide, stir in an ice bath, slowly add 10% of 6.89 grams of sodium hypochlorite solution, while using 1N hydrochloric acid to adjust the pH value to about 7, after the dropwise addition, stir and react in an ice bath for 2 hours. After the reaction, the macroporous cross-linked resin PSHTA3-Br containing quaternary ammonium salt and haloamine functional groups was obtained by filtration, washed with water for 6 times, and then dried at 45° C. to constant weight. Determination of oxidized bromine (Br) on the resin by iodometric method + ) content is 12.77%. Elemental analysis test values: C, 50.54; H, 5.619; N, 5.01. IR: 3850, 3393, 3021, 29...

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Abstract

The invention relates to a sterilization polymer containing a quaternary ammonium salt and halamine or a halamine precursor functional group as well as a preparation method and application of the sterilization polymer. The preparation method comprises the following steps of: generating a high-molecular polymer containing the quaternary ammonium salt and the halamine precursor functional group through the reaction among a halo-methylated high-molecular polymer serving as a carrier, tertiary amine and a halamine precursor; and generating the sterilization high-molecular polymer containing the quaternary ammonium salt and the halamine precursor functional group through halogenating reaction. The sterilization high-molecular polymer has a quick, efficient and broad-spectrum sterilization effect, can be extensively applied to sterilization treatment of various water bodies and air as well as the control of harmful smelly gas. The sterilization high-molecular polymer also can be mixed with other materials to obtain various sanitary and anti-bacterial products such as an anti-bacterial mattress cover, an anti-bacterial blanket, an anti-bacterial diaper.

Description

technical field [0001] The invention relates to the synthesis and application of a novel high-efficiency and renewable high-molecular polymer bactericide, in particular to a bactericidal polymer containing a quaternary ammonium salt and a halamine or a halamine precursor functional group and a preparation method and application thereof. Background technique [0002] The application of effective antibacterial and disinfection materials and technologies is an important means to block the spread and prevalence of harmful microorganisms. Due to the disadvantages of high toxicity and easy pollution caused by water-soluble fungicides, the development of water-insoluble polymer fungicides, especially water-insoluble resin fungicides has attracted more and more people's interest. US Patent No. 4,349,646 discloses a method for preparing water-insoluble polyquaternium bactericidal resin by reacting chloromethylated polystyrene resin or polychloromethacrylate resin with tertiary amine ...

Claims

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Application Information

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IPC IPC(8): C08F12/08C08F212/08C08F212/36C08F8/44C08F8/20C08F8/22A01N43/90A01N43/66A01N43/54A01N43/50A01N43/40A01P1/00
Inventor 梁杰揭志强闫秀芳赵莲红
Owner SHANGHAI NORMAL UNIVERSITY
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