The preparation of N-halamine antibacterial materials based on cyanuric chloride

Abstract

The invention discloses a method to prepare N-halamine antibacterial materials based on cyanuric chloride. Firstly, cyanuric chloride is dissolved in alkaline solution to produce finishing solution. Then the materials are dipped in the finishing solution to absorb liquid. The wetted materials are taken out, cured under 90˜120° C. for 10˜40 min, chlorinated by bleach solution, washed and dried to get antibacterial materials. The processing method in this invention is simple, cheap, and energy-saving. In addition, it only caused very small loss of physical strength. The resulted materials have strong antibacterial efficacy, are safe for application.

What is claimed is: 
     
         1 . A method for preparing N-halamine antibacterial materials based on cyanuric chloride, characterized in that: cyanuric chloride is completely dissolved alkaline solution, and the material was immersed in the prepared solution until thoroughly wetted. The wet material was dried and cured for 10˜40 min at 90˜120° C. The antimicrobial material was obtained after halogenation, washing, and drying. 
     
     
         2 . The method according to  claim 1 , wherein the alkalis are sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate and potassium bicarbonate solution, with mass percent of 1˜30%. 
     
     
         3 . The method according to  claim 1 , wherein the mass percent of cyanuric chloride in the solution is 0.5˜30%. 
     
     
         4 . The method according to  claim 1 , wherein the halogenation process means the activation of material through soaking the mentioned material in a solution containing the active halogens. 
     
     
         5 . The method according to  claim 1 , wherein the treated materials include natural fiber or synthetic fiber textiles, plastics, sponge, natural rubber, synthetic rubber, wood, paper, paint, chitosan and chitin. 
     
     
         6 . The method according to  claim 1 , wherein the treatment method includes two dipping-padding processes for the treatment of natural fiber or synthetic fiber textiles. 
     
     
         7 . The method according to  claim 2 , wherein the alkaline concentration in solution is 2˜5%. 
     
     
         8 . The method according to  claim 3 , wherein the mass percent of cyanuric chloride is 1˜5%. 
     
     
         9 . The method according to  claim 4 , wherein the halogenation solution contains the active halogen including sodium hypochlorite, sodium bromate or calcium hypochlorite solution, and the mass percent is from 0.01 to 5%.