Patent ID: 8354368

Claim:
A method for the hydrophilization and/or improvement in shine retention of hard surfaces comprising the step of contacting a hard surface with a cleaning composition comprising one or more water-soluble graft copolymers and one or more surface-active compounds, wherein said water-soluble graft copolymers are prepared by the free-radical initiated graft polymerization of: (A) 40 to 90% by weight of one or more components selected from the group consisting of monosaccharides, oligosaccharides, polysaccharides and derivatives thereof; (B) 5 to 40% of one or more monomers selected from the group consisting of ethylenically unsaturated C3-C10 monocarboxylic acids, alkali metal salts thereof, and ammonium salts thereof; and (C) 10 to 50% by weight of one or more monomers selected from the group consisting of 3-trimethylammonium propyl methacrylamide, dimethyldiallylammonium chloride and acrylamidopropyltrimethylammonium chloride; wherein all weight percentages are based on the total weight of (A), (B) and (C); wherein said graft copolymers are free from di- and/or polycarboxylic acids as monomer components, and free from maleic acid and/or maleic anhydride, whereby said hard surface shows increased hydrophilic properties and/or increased shine retention.