| 20110192558 | RECYCLING OF FIBRE PRODUCTS - In a method of recycling printed paper, the collector chemical composition used to aid ink removal after pulping of the paper advantageously comprises an aqueous emulsion of a polysiloxane and a delivery aid for the polysiloxane, the delivery aid comprising one of more compounds selected from an alkali metal salt of a fatty acid moiety, and a nitrogenous salt of a fatty acid moiety, and a water-swellable polymer. The collector chemical composition is effective at low concentration, gives good brightness gain, low level of fibre loss, and effluent water low in siliceous material. | 08-11-2011 |
