Use of a coating agent that cures at room temperature

Abstract

The invention relates to the use of a coating agent that cures at room temperature. In order to provide a room-temperature-curing coating agent for preventing cathodic corrosion and for application as an aerosol or as brush-on paint, it is proposed that the coating agent be produced by the following method: a) Mixing 5 to 95 wt. % metal alkoxide with 5 to 95 wt. % metal pigment, b) Adding a solvent and up to 10 wt. % (relative to the amount of solid matter) of a catalyst, the catalyst being selected from the group consisting of Lewis acids, organic acids and bases, inorganic bases, functional silanes, in particular aminosilanes, inorganic acids, in particular sulphuric or phosphoric acid, phosphates or blocked phosphates, the coating agent being applied onto a metallic substrate and subsequently dried at room temperature.

1 . Use of a room-temperature-curing coating agent for providing cathodic corrosion protection in the form of an aerosol or a brush-on paint, produced according to the following method:
 a) Mixing 5 to 95 wt. % metal alkoxide with 5 to 95 wt. % metal pigment,   b) Adding a solvent and up to 10 wt. % (relative to the amount of solid matter) of a catalyst, said catalyst being selected from the group consisting of Lewis acids, organic acids and bases, inorganic bases, functional silanes, in particular aminosilanes, inorganic acids, in particular sulphuric or phosphoric acid, phosphates or blocked phosphates,   
       the coating agent being applied onto a metallic substrate and subsequently dried at room temperature. 
     
     
         2 . Use according to  claim 1 , wherein up to 20 wt. %, preferably 0 to 10 wt. % and best of all 0.1 to 2.5 wt. % (in each case relative to the amount of solid matter) additives are added. 
     
     
         3 . Use according to  claim 1 , wherein up to 50 wt. %, preferably 0 to 25 wt. % and best of all 0 to 10 wt. % (in each case relative to the amount of solid matter) colorants are added. 
     
     
         4 . Use according to  claim 1 , wherein the coating agent is applied in layer thicknesses of 5 to 60 μm, preferably in layer thicknesses of 5 to 25 μm and even more preferably in layer thicknesses of 10 to 15 μm. 
     
     
         5 . Use according to  claim 1 , wherein the metal alkoxide is selected from the group consisting of titanium alkoxide, in particular titanium butylate, titanium propylate or titanium isopropylate, zirconium alkoxide, aluminum alkoxide and tin alkoxide, the metal content ranging in each case from 1 to 50 wt. %, preferably from 1 to 40 wt. % and even more preferably from 1 to 30 wt. %. 
     
     
         6 . Use according to  claim 1 , wherein the metal pigment is selected from the group consisting of zinc, aluminum and magnesium, as well as mixtures and alloys thereof. 
     
     
         7 . Use according to  claim 1 , wherein the solvent preferably contains or consists of water, alcohol, protic or aprotic solvents, the solvent most preferably consisting of or containing toluene, butyl glycol, xylene or isopropanol. 
     
     
         8 . Use according to  claim 1 , wherein, for use of a room-temperature-curing coating agent in the form of an aerosol, a propellent selected from the group consisting of propane, butane, ketones, ether, carbon dioxide, nitrogen, chlorofluorocarbons or laughing gas is added. 
     
     
         9 . Use according to  claim 1 , wherein, for use of a room-temperature-curing coating agent in the form of an aerosol, the coating agent is diluted with solvent or solvent mixtures to a solids content of 2 to 40 wt. %, preferably 5 to 25 wt. % and even more preferably 5 to 15 wt. %. 
     
     
         10 . Use according to  claim 1 , wherein, for use of a room-temperature-curing coating agent in the form of a brush-on paint, the coating agent is diluted with solvent or solvent mixtures to a solids content of 25 to 75 wt. %, preferably 40 to 60 wt. %. 
     
     
         11 . (canceled) 
     
     
         12 . Use according to  claim 2 , wherein the additives are selected from the group consisting of flatting agents, flow-control additives, slip additives, adhesion promoters, flexibilizers, antisettling agents, in particular Aerosil, water and oil repellents, dessicants, inhibitors and hydrophilizing agents. 
     
     
         13 . Use according to  claim 3 , wherein the colorants are selected from the group consisting of inorganic and organic pigments, titanium dioxide, carbon black and iron oxide.