Use of a composition for inhibition of corrosion of metals or metal alloys and method for inhibition of corrosion of metals or metal alloys

Abstract

The present invention relates to the use of a corrosion inhibition composition for protection of metals and/or metallic surfaces from corrosion and a method for inhibition of corrosion of metallic surfaces using the corrosion inhibition composition.

1 - 9 . (canceled) 
     
     
         10 . A method for inhibition of corrosion of a metal and/or metallic surface comprising:
 a) providing a corrosion inhibition composition comprising
 at least one zinc carboxylate and 
 calcium gluconate, 
   
       wherein the mass ratio of the at least one zinc carboxylate and the calcium gluconate is in the range of 1:10 to 1:600, and
 b) adding the corrosion inhibition composition to a liquid medium, 
 
       wherein the metal and/or metallic surface is exposed to the liquid medium or will be exposed to the liquid medium. 
     
     
         11 . The method according to  claim 10 , wherein the concentration of the corrosion inhibition composition in the liquid medium is in the range of 0.01% to 20% (w/w). 
     
     
         12 . The method according to  claim 10 , wherein the carboxylate anion in the zinc carboxylate is selected from the group comprising gluconate, bisglycinate, glycinate, citrate, acetate, ascorbate, DL-hydrogenaspartate, L-hydrogenaspartate, malate and mixtures of these. 
     
     
         13 . The method according to  claim 10 , wherein the corrosion inhibition composition additionally comprises at least one magnesium carboxylate. 
     
     
         14 . The method according to one of the  claim 10 , wherein the corrosion inhibition composition additionally comprises a chelating agent. 
     
     
         15 . The method according to  claim 10 , wherein the metal and/or the metallic surface is selected from the group consisting of cast iron, copper, aluminum, cast aluminum, steel, mild steel, zinc, magnesium, cast magnesium, tin, solder, titanium, brass and combinations thereof. 
     
     
         16 . The method according to  claim 11 , wherein the carboxylate anion in the zinc carboxylate is selected from the group comprising gluconate, bisglycinate, glycinate, citrate, acetate, ascorbate, DL-hydrogenaspartate, L-hydrogenaspartate, malate and mixtures of these. 
     
     
         17 . The method according to  claim 11 , wherein the corrosion inhibition composition additionally comprises at least one magnesium carboxylate. 
     
     
         18 . The method according to  claim 12 , wherein the corrosion inhibition composition additionally comprises at least one magnesium carboxylate. 
     
     
         19 . The method according to  claim 11 , wherein the corrosion inhibition composition additionally comprises a chelating agent. 
     
     
         20 . The method according to  claim 12 , wherein the corrosion inhibition composition additionally comprises a chelating agent. 
     
     
         21 . The method according to  claim 13 , wherein the corrosion inhibition composition additionally comprises a chelating agent. 
     
     
         22 . The method according to  claim 11 , wherein the metal and/or the metallic surface is selected from the group consisting of cast iron, copper, aluminum, cast aluminum, steel, mild steel, zinc, magnesium, cast magnesium, tin, solder, titanium, brass and combinations thereof. 
     
     
         23 . The method according to  claim 12 , wherein the metal and/or the metallic surface is selected from the group consisting of cast iron, copper, aluminum, cast aluminum, steel, mild steel, zinc, magnesium, cast magnesium, tin, solder, titanium, brass and combinations thereof. 
     
     
         24 . The method according to  claim 13 , wherein the metal and/or the metallic surface is selected from the group consisting of cast iron, copper, aluminum, cast aluminum, steel, mild steel, zinc, magnesium, cast magnesium, tin, solder, titanium, brass and combinations thereof. 
     
     
         25 . The method according to  claim 16 , wherein:
 the corrosion inhibition composition additionally comprises at least one magnesium carboxylate;   the corrosion inhibition composition additionally comprises a chelating agent; and   the metal and/or the metallic surface is selected from the group consisting of cast iron, copper, aluminum, cast aluminum, steel, mild steel, zinc, magnesium, cast magnesium, tin, solder, titanium, brass and combinations thereof.   
     
     
         26 . The method according to  claim 10 , wherein said method protects the metal and/or metallic surface from corrosion in liquids comprising water. 
     
     
         27 . The method according to  claim 10 , wherein the liquid medium comprises water, at least one organic solvent, or a mixture thereof. 
     
     
         28 . The method according to  claim 10 , wherein said adding the corrosion inhibition composition to the liquid medium forms a liquid formulation having a concentration of the corrosion inhibition composition in the range of 0.01% to 50% (w/w) of the total liquid formulation. 
     
     
         29 . The method according to  claim 10 , wherein the corrosion inhibition composition is a solid formulation comprising at least one further component selected from a carrier material, complexing agent, softener and surfactant.