Method for coating surfaces and aqueous formulations suited therefor

Abstract

A method for coating surfaces by treatment with a substantially paraffin-free aqueous formulation, comprising (A) at least one copolymer having a melt flow rate (MFR) in the range from 1 to 50 g/10 min, which comprises, incorporated in the form of polymerized units, (a) from 65 to 84.5% by weight of ethylene, (b) from 25.5 to 35% by weight of at least one ethylenically unsaturated carboxylic acid, and which is at least partly neutralized with alkali metal, (B) at least one nonionic or anionic surfactant, (C) at least one antifoam, (D) if appropriate, at least one organic amine, (E) if appropriate, at least one organic solvent.

1 - 16 . (canceled) 
     
     
         17 . A method for coating surfaces which comprises coating a surface with a substantially paraffin-free aqueous formulation which comprises
 (A) at least one copolymer having a melt flow rate (MFR) in the range from 1 to 50 g/10 min, which comprises, incorporated in the form of polymerized units,
 (a) from 65 to 74.5% by weight of ethylene, 
 (b) from 25.5 to 35% by weight of at least one ethylenically unsaturated carboxylic acid, 
 and which is at least partly neutralized with alkali metal, 
   (B) at least one nonionic or anionic surfactant,   (C) at least one antifoam,   (D) optionally at least one organic amine, and   (E) optionally at least one organic solvent.   
     
     
         18 . The method according to  claim 17 , wherein the surface comprises a metal. 
     
     
         19 . The method according to  claim 17 , wherein said nonionic surfactant (B) is a tri- to heptaalkoxylated oxo or fatty alcohol. 
     
     
         20 . The method according to  claim 17 , wherein said anionic surfactant (B) is an acidic phosphoric acid ester of fluorinated alcohols. 
     
     
         21 . The method according to  claim 17 , wherein the treatment is carried out as immersion or spraying or as treatment with textile. 
     
     
         22 . The method according to  claim 17 , wherein said ethylenically unsaturated carboxylic acid (b) is (meth)acrylic acid. 
     
     
         23 . The method according to  claim 17 , wherein said antifoam (C) is polyalkoxylated glycerol, polypropylene oxide or tri-C 1 -C 6 -alkyl phosphate. 
     
     
         24 . The method according to  claim 17 , wherein said antifoam (C) is triisobutyl phosphate. 
     
     
         25 . A surface coated by the method according to  claim 17 . 
     
     
         26 . A substantially paraffin-free aqueous formulation comprising
 (A) at least one copolymer having a melt flow rate (MFR) in the range from 1 to 50 g/10 min, which comprises, incorporated in the form of polymerized units,
 (a) from 65 to 74.5% by weight of ethylene, 
 (b) from 25.5 to 35% by weight of at least one ethylenically unsaturated carboxylic acid, 
 and which is at least partly neutralized with alkali metal, 
   (B) at least one nonionic or anionic surfactant,   (C) at least one antifoam,   (D) optionally at least one organic amine, and   (E) optionally at least one organic solvent.   
     
     
         27 . The aqueous formulation according to  claim 26 , wherein said nonionic surfactant (B) is tri- to heptaalkoxylated oxo or fatty alcohol. 
     
     
         28 . The aqueous formulation according to  claim 26 , wherein said anionic surfactant is a fluorinated surfactant. 
     
     
         29 . The aqueous formulation according to  claim 26 , wherein said ethylenically unsaturated carboxylic acid (b) is (meth)acrylic acid. 
     
     
         30 . The aqueous formulation according to  claim 26 , wherein said antifoam (C) is polyalkoxylated glycerol, polypropylene oxide or tri-C 1 -C 6 -alkyl phosphate. 
     
     
         31 . The aqueous formulation according to  claim 26 , wherein said antifoam (C) is triisobutyl phosphate. 
     
     
         32 . A process for the preparation of the aqueous formulation according to  claim 26 , which comprises mixing
 (A) at least one copolymer having a melt flow rate (MFR) in the range from 1 to 50 g/10 min, which comprises, incorporated in the form of polymerized units,
 (a) from 65 to 74.5% by weight of ethylene, 
 (b) from 25.5 to 35% by weight of at least one ethylenically unsaturated carboxylic acid, 
 and which is at least partly neutralized with alkali metal, 
   (B) at least one nonionic or anionic surfactant,   (C) at least one antifoam,   (D) optionally at least one organic amine, and   (E) optionally at least one organic solvent,   
       with one another in water.