Förfarande för behandling av cellulosamaterial och vid detta förfarande användbara kompositioner

摘要

A process of de-inking waste paper can be operated under conditions using a simple combination of chemicals to result in a waste liquor that is substantially environmentally friendly. The process comprises forming a pulp from the waste paper in an aqueous medium that has a pH of between 6 and 9 and that is substantially free of dissolved phosphate and that includes an ink-dispersing amount of dispersing agent, and separating the ink from the pulp.