Antimicrobial porous component based on a polymer material grafted with benzalkonium units

Abstract

The invention concerns an anti-microbial porous part based on a polymeric material grafted at the surface and in its volume with ammonium motifs with anti-microbial and/or bactericidal and/or fungicide activity, preferably benzalkonium. The invention is characterized in that it has a porosity sufficiently high to enable a liquid with compatible viscosity to pass through its structure and sufficiently low to trap contaminating germs within said structure.

1 - 14 . (canceled)  
     
     
         15 . A porous antimicrobial component formed of a polymer material in the form of a sinter and grafted at its surface and in its bulk with ammonium units having at least one of antimicrobial activity, bactericidal activity and fungicidal activity.  
     
     
         16 . The porous component of  claim 15 , wherein the polymer material is derived from a polymer comprising units of formula (I)  
         —[CH 2 —CH(Ar)]—  (I)  
       in which Ar represents a chain of formula:  
         —Ph—CH 2 —N ⊕ (CH 3 ) 2 R,X ⊖   (II)  
       or  
         —Ph—CH 2 —X  (III)  
       in which: 
 R represents a C 2 -C 15  alkyl,  
 Ph is a phenyl unit, and  
 the ion X −  is a pharmaceutically acceptable anion, with chains of formula II being present in an amount that is sufficient to give said polymer material antimicrobial, bactericidal or fungicidal properties.  
 
     
     
         17 . The porous component of  claim 16 , wherein the polymer is a polystyrene partially grafted with dimethyltetradecylamine units.  
     
     
         18 . The porous component of  claim 17 , wherein the polystyrene is grafted to a molar percentage of 15% to 30% of benzalkonium units.  
     
     
         19 . The porous component of  claim 15 , which has a porosity of between 5 and 30 microns.  
     
     
         20 . A bottle for packaging a liquid solution, comprising a distribution nozzle that includes a porous component of  claim 15 .  
     
     
         21 . The bottle of  claim 20 , wherein the liquid solution is a solution for food, medicinal or dermatological use.  
     
     
         22 . The bottle of  claim 20 , wherein the bottle is for packaging an ophthalmic solution.