Patent ID: 8202372

Claim:
A method of treating a hard surface, the method comprising contacting the hard surface with an agent comprising at least one polycarbonate-, polyurethane- and/or polyurea-polyorganosiloxane compound and at least one surfactant by spreading the agent extensively over the hard surface and rinsing off the agent from the hard surface after a period of action of 1 to 10 minutes, wherein the at least one polycarbonate-, polyurethane- and/or polyurea-polyorganosiloxane compound contains at least one structural element of Formula (I): -Y-A-(C═O)-A- (I), each A being independently selected from S, O or NR 1 , Y is a di- or polyvalent, straight-chain, cyclic or branched, saturated, unsaturated or aromatic, substituted or unsubstituted hydrocarbon residue with up to 1000 carbon atoms (not including the carbon atoms of an optionally present polyorganosiloxane unit), which may contain one or more groups selected from —O—, —(CO)—, —NH—, —NR 2 —, —(N + R 2 R 3 )— or a polyorganosiloxane unit with 2 to 1000 silicon atoms, R 1 being hydrogen or a straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon residue with up to 40 carbon atoms, which may contain one or more groups selected from —O—, —(CO)—, —NH— or —NR 2 —, R 2 being a straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon residue with up to 40 carbon atoms, which may contain one or more groups selected from —O—, —(CO)— or —NH, R 3 being a straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon residue with up to 100 carbon atoms, which may contain one or more groups selected from —O—, —(CO)—or —NH—, or being a divalent residue which forms a cyclic structure within the residue Y, or one or both of the residues A adjacent to Y possibly forming a nitrogenous heterocyclic residue with the residue Y located between them, and in the entire compound all the residues A or Y or R 1 or R 2 or R 3 stated in Formula (I) not necessarily being identical, providing that, in the entire compound, at least one of the residues Y comprises a polyorganosiloxane unit with 2 to 1000 silicon atoms, and/or an acid addition compound and/or a salt thereof.