Coating for permanent hydrophilization of surfaces, and its use

Abstract

Coating for permanent hydrophilization of surfaces, and its use The invention relates to a coating for permanent hydrophilization of surfaces, and its use. In order to permanently hydrophilize surfaces, a coating is proposed, within the scope of the invention, which consists of nano-scale particles having hydrophilic side chains, which can be sintered.

1 . Coating for permanent hydrophilization of surfaces, wherein the coating consists of nano-scale particles having hydrophilic side chains, which can be sintered.  
     
     
         2 . Coating according to  claim 1 , wherein the coating consists of 10 to 90% inorganic structures, 5 to 70% hydrophilic side chains, as well as 0-50% organic side chains having functional groups.  
     
     
         3 . Coating according to  claim 2 , wherein the inorganic structures are silicon dioxide or zirconium oxide.  
     
     
         4 . Coating according to  claim 1 , wherein the nano-scale particles have an average particle size of 2 to 100 nm, preferably 2 to 30 nm.  
     
     
         5 . Coating according to  claim 2 , wherein the hydrophilic side chains are amino, sulfonate, sulfate, sulfite, sulfonamide, sulfoxide, carboxylate, polyol, polyether, phosphate, or phosphonate groups.  
     
     
         6 . Coating according to  claim 2 , wherein the functional groups of the organic side chains are epoxy, acryloxy, methacryloxy, glycidyloxy, allyl, vinyl, carboxyl, mercapto, hydroxyl, amide or amino, isocyano, hydroxy, or silanol groups.  
     
     
         7 . Coating according to  claim 1 , wherein the pH of the coating lies between 3 and 10.  
     
     
         8 . Coating according to  claim 1 , wherein the layer thickness of the coating lies between 100 nm and 20 μm, preferably between 250 nm and 5 μm.  
     
     
         9 . Use of the coating according to  claim 1  for coating metals, plastics, ceramics, textiles, leather, wood, paper, varnished surfaces, and glass, as an anti-fog agent.