Patent ID: 8658722

Claim:
An aqueous surface-treating agent, which comprises a silicone oil aqueous emulsion, a polyurethane resin aqueous emulsion, and a silane compound represented by the following general formula: where R 1 and R 2 each are independently an alkyl group having 1-4 carbon atoms, n and m are 1≦n≦3 and m=3-n respectively, and/or a partial hydrolyzate thereof, wherein more than 200 parts by weight of the polyurethane resin in terms of the weight of solid matters is used on the basis of 100 parts by weight in terms of the weight of nonvolatile matters of the silicone oil, wherein the polyurethane resin aqueous emulsion is a mixture of (a) an aqueous emulsion containing a hydrazide and a carbonyl group-containing polyurethane resin, and (b) a silanol-modified polyurethane resin aqueous emulsion wherein the silanol-modified polyurethane resin has, in the polyurethane structure, silanol groups, which turn to siloxane bonds by condensation cross-linking reaction after surface treating, in a ratio by weight of solid matter sum total of (a):(b) is 5-95:95-10.