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Method for transformation of conventional and commercially important polymers into durable and rechargeable antimicrobial polymeric materials

A polymer, halide technology, applied in the field of antibacterial agents, can solve the problems of low antibacterial activity, limited examples, high toxicity, etc., to achieve cost-effective, flexible and cost-effective effects

Active Publication Date: 2013-07-10
BOARD OF RGT THE UNIV OF TEXAS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, some antimicrobial additives are actually preservatives with low antimicrobial activity, although antimicrobial agents are highly toxic
[0004] Recently, the development of antimicrobial additives that protect both polymers and users has become an urgent issue; however, successful examples are still limited (13-16)

Method used

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  • Method for transformation of conventional and commercially important polymers into durable and rechargeable antimicrobial polymeric materials
  • Method for transformation of conventional and commercially important polymers into durable and rechargeable antimicrobial polymeric materials
  • Method for transformation of conventional and commercially important polymers into durable and rechargeable antimicrobial polymeric materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: SHC-1. Add a solution of sodium dichloroisocyanurate (DCCANa, about 8.8 g, about 0.04 mol) in water (about 40 ml) into a solution of about 9.6 g (about 0.04 mol) SHA-1 in toluene (about 20 mol) . The mixture was shaken vigorously for about 10 minutes. Then toluene (about 10 mol) was added. The precipitated cyanuric acid is filtered out. The organic layer was separated from the water. After evaporating the toluene, the solid was collected and recrystallized with petroleum ether to obtain a yield of 77%, a melting temperature of 83°C and an active chlorine content of 12.5%.

[0046] figure 1 Illustrates a synthetic method of the present invention. The present invention provides the preparation of sebacic acid bis(2,2,6,6-tetramethyl-4-piperidyl) ester (HALS-1) with sodium dichloroisocyanurate (DCCANa) Acid bis(N-chloro-2,2,6,6-tetramethyl-4-piperidinyl) ester (HALS-1-Cl).

Embodiment 2

[0047] Example 2: SHC-2. A solution of DCCANa (about 8.8 grams, 0.04 mol) in water (about 40 ml) was added to about 5.95 grams (about 0.04 mol) of SHA-2 in toluene (about 20 mol). The mixture was shaken vigorously for about 20 minutes. Then toluene (about 10 mol) was added. The precipitated cyanuric acid is filtered out. Separate the organic layer from the water, then use anhydrous CaCl 2 dry. Add about 50ml methanol; collect the precipitate by filtration, wash with methanol, air dry overnight and store in a desiccator at room temperature for about 72 hours to reach a constant weight. The yield obtained is about 75% and the melting point is about 280°C ( Decomposition) and active chlorine content is about 7.96%.

Embodiment 3

[0048] Example 3: SHC-3. A solution of DCCANa (about 8.8 grams, 0.04 mol) in water (about 40 ml) was added to a solution of about 8.2 grams (about 0.04 mol) of SHA-3 in toluene (about 20 mol). The mixture was shaken vigorously for about 10 minutes. Then toluene (about 10 mol) was added. The precipitated cyanuric acid is filtered out. The organic layer was separated from the water. After the toluene was evaporated, the solid was collected and recrystallized with petroleum ether. The yield obtained was about 79%, the melting point was about 32°C and the active chlorine content was 7.86%.

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Abstract

The present invention includes compositions and methods of making an antimicrobial polymer by mixing sterically hindered N-halo-amines with polymeric materials with a source of halides selected from sodium di-X-isocyanurate, sodium hypohalite, N-X-succinimide, and calcium hypohalite, and mixtures and combinations thereof, wherein X is selected from Cl or Br, and wherein the sterically hindered halo- amines are charged before or after mixing with the polymers, or combinations thereof.

Description

Technical field [0001] The present invention generally relates to the field of antibacterial agents. More specifically, the present invention relates to compositions and methods for preparing and replenishing polymer materials with antibacterial additives. Background technique [0002] Regarding the polymer biocide, the background of the present invention is described as follows, and the background does not limit the scope of the present invention. [0003] In response to the widespread spread of infectious pathogens (1), antimicrobial polymers, that is, polymers that can effectively inactivate microorganisms through contact, have attracted considerable attention (2-12). The simplest and most cost-effective method in the preparation of antibacterial polymer materials is to directly add antibacterial additives to the polymer structure during processing, and has been widely used in the preparation of wood, paper, plastics, textiles, coatings, etc. (13-14). Traditionally, the main p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K31/00C08K5/34
CPCC08K5/34C08K5/0058
Inventor 孙玉宇陈兆彬
Owner BOARD OF RGT THE UNIV OF TEXAS SYST