Method for treating surfaces of textiles and non-textiles, in such a way as to stimulate the detachment of dirt

Abstract

A process for the soil release treatment of surfaces of textile and nontextile materials, in which cationically modified hydrophilic nanoparticles based on uncrosslinked polymers of (a) 60 to 100% by weight of one or more carboxyl-containing ethylenically unsaturated monomers or salts thereof, (b) 0 to 40% by weight of one or more water-insoluble monoethylenically unsaturated monomers, (c) 0 to 25% by weight of one or more sulfonic acid- and/or phosphonic acid-containing monomers or salts thereof, (d) 0 to 30% by weight of one or more water-soluble nonionic monomers are applied to the surface of the materials from an aqueous dispersion, where the dispersion of the hydrophilic nanoparticles can be stabilized with anionic, nonionic and/or betainic emulsifiers and/or protective colloids, and where the hydrophilic nanoparticles have a particle size of from 10 nm to 2 μm and have been cationically modified by coating their surface with one or more cationic polymers, one or more polyvalent metal ions and/or one or more cationic surfactants.

1 - 14 . (Canceled).  
     
     
         15 . A process for the soil release treatment of surfaces of textile and nontextile materials, in which cationically modified hydrophilic nanoparticles based on uncrosslinked polymers of 
 (a) 60 to 100% by weight of one or more carboxyl-containing ethylenically unsaturated monomers or salts thereof,    (b) 0 to 40% by weight of one or more water-insoluble monoethylenically unsaturated monomers,    (c) 0 to 25% by weight of one or more sulfonic acid- and/or phosphonic acid-containing monomers or salts thereof,    (d) 0 to 30% by weight of one or more water-soluble nonionic monomers are applied to the surface of the materials from an aqueous dispersion, where the dispersion of the hydrophilic nanoparticles can be stabilized with anionic, nonionic and/or betainic emulsifiers and/or protective colloids, and where the hydrophilic nanoparticles have a particle size of from 10 nm to 2 μm and have been cationically modified by coating their surface with one or more cationic polymers, one or more polyvalent metal ions and/or one or more cationic surfactants.    
     
     
         16 . A process as claimed in  claim 15 , wherein the aqueous dispersion comprises 0.0002 to 1% by weight of hydrophilic nanoparticles.  
     
     
         17 . A process as claimed in  claim 15 , wherein the pH of the aqueous dispersion is from 1 to 6.5.  
     
     
         18 . A process as claimed in  claim 15 , wherein the cationic polymers are chosen from the group consisting of polymers containing vinylamine units, polymers containing vinylimidazole units, polymers containing quaternary vinylimidazole units, imidazole/epichlorohydrin condensates, uncrosslinked polyamidoamines, uncrosslinked polyamidoamines grafted with ethyleneimine, polyethyleneimines, alkoxylated polyethyleneimines, uncrosslinked polyethyleneimines, amidated polyethyleneimines, alkylated polyethyleneimines, polyamines, amine/epichlorohydrin polycondensates, alkoxylated polyamines, polyallylamines, polydimethyldiallylammonium chlorides, polymers containing basic (meth)acrylamide or (meth)acrylic ester units, polymers containing basic quaternary (meth)acrylamide or (meth)acrylic ester units, and lysine condensates.  
     
     
         19 . A process as claimed in  claim 15 , wherein the polyvalent metal cations are chosen from the group consisting of Mg 2+ , Ca 2+ , Ba 2+ , Al 3+  and Zn 2+ .  
     
     
         20 . A process as claimed in  claim 15 , wherein the cationic surfactants are chosen from the group consisting of C 7 -C 25 -alkylamine, C 7 -C 25 -alkylammonium, di(C 7 -C 25 )alkylammonium, C 7 -C 25 -alkyl ester quat and C 7 -C 25 -alkylimidazolinium compounds.  
     
     
         21 . Cationically modified hydrophilic nanoparticles based on uncrosslinked polymers of 
 (a) 75 to 95% by weight of one or more carboxyl-containing ethylenically unsaturated monomers or salts thereof,    (b) 5 to 25% by weight of one or more water-insoluble monoethylenically unsaturated monomers,    (c) 0, 1 to 5% by weight of one or more sulfonic acid- and/or phosphonic acid-containing monomers or salts thereof,    (d) 0 to 30% by weight of one or more water-soluble nonionic monomers,    where the hydrophilic nanoparticles have a particle size of from 10 nm to 2 μm and have been cationically modified by coating their surface with one or more cationic polymers, one or more polyvalent metal ions and/or one or more cationic surfactants.    
     
     
         22 . An aqueous dispersion of cationically modified hydrophilic nanoparticles based on uncrosslinked polymers of 
 (a) 75 to 95% by weight of one or more carboxyl-containing ethylenically unsaturated monomers or salts thereof,    (b) 5 to 25% by weight of one or more water-insoluble monoethylenically unsaturated monomers,    (c) 0, 1 to 5% by weight of one or more sulfonic acid- and/or phosphonic acid-containing monomers or salts thereof,    (d) 0 to 30% by weight of one or more water-soluble nonionic monomers,    where the dispersion of the hydrophilic nanoparticles can be stabilized with anionic, nonanionic and/or betainic emulsifiers and/or protective colloids, and where the hydrophilic nanoparticles have a particle size of from 10 nm to 2 μm and have been cationically modified by coating their surface with one or more cationic polymers, one or more polyvalent metal ions and/or one or more cationic surfactants.    
     
     
         23 . An aqueous dispersion as claimed in  claim 22 , which comprises 0.001 to 50% by weight of hydrophilic nanoparticles.  
     
     
         24 . The use of hydrophilic nanoparticles or of cationically modified hydrophilic nanoparticles, as are defined in  claim 15  as soil release additive to rinse, care, washing and cleaning compositions.  
     
     
         25 . A composition for the soil release treatment of surfaces of textile or nontextile materials comprising 
 a) 0.05 to 40% by weight of hydrophilic nanoparticles, as in  claim 21 ,    b) 0 to 30% by weight of one or more cationic polymers, cationic surfactants and/or water-soluble salts of Mg, Ca, Zn or Al,    c) 0, 01 to 10% by weight of acid,    d) 0 to 80% by weight of customary additives, such as bases, inorganic builders, organic cobuilders, further surfactants, polymeric color transfer inhibitors, polymeric antiredeposition agents, soil release polymers, enzymes, complexing agents, corrosion inhibitors, waxes, silicone oils, light protection agents, dyes, solvents, extenders, hydrotropic agents, thickeners and/or alkanolamines,    e) 0 to 99.95% by weight of water.    
     
     
         26 . A composition as claimed in  claim 25 , comprising 
 b) 0.1 to 30% by weight of cationic polymers, cationic surfactants and/or water-soluble salts of Mg, Ca, Zn or Al.    
     
     
         27 . A composition as claimed in  claim 25 , comprising 
 d) 0.01 to 40% by weight of customary additives,    e) 50 to 95% by weight of water.