Patent ID: 7704558

Claim:
A method of making a cleaning article comprising the steps of: (a) forming a wet mixture by mixing water, at least one surfactant, a hydrophilic polyurethane polymer and at least one hydrophilic non-polyurethane polymer selected from the group consisting of monoalkyl esters of polymethyl vinyl ether/maleic acid copolymers, quarternized copolymers of vinylpyrrolidone and dimethylaminoethyl methacrylate, vinylpyrrolidone/vinyl acetate copolymers, alkylated vinylpyrrolidone polymers, polyvinyl pyrrolidone, polyethylene glycols, polyacrylate copolymers, polyvinylidene dichloride, and mixtures thereof; (b) impregnating and/or coating a substrate with the wet mixture in such manner that the wet mixture does not form a hydrophilic foam, (c) drying the impregnated and/or coated substrate.