DEINKING AGENT FOR FLEXOGRAPHY WASTE-PAPER AND DEINKING METHOD

摘要

The ink removing agent for flexography waste-pater is prepared by mixing a reaction product of 5-20M ethylene oxide and fatty acid of carbon number 12-20, with an amine salt of fatty acid having carbon number 14-20 at a weight ratio of 30/70-80/20. The ink of flexography waste-pater is removed by adding the above ink removing agent and polymer to the waste-paper at the condition of pH 4-8.