HYDROPHOBIC POLYELECTROLYTE COAGULANTS FOR THE CONTROL OF PITCH IN PULP AND PAPER SYSTEMS

摘要

A method for controlling pitch in papermaking systemswhich comprises the step of adding a hydrophobicpolyelectrolyte copolymer coagulant to pulp and paperprocess water. The hydrophobic polyelectrolyte copolymercoagulant comprises diallyldimethylammonium chloride and ahydrophobic monomer selected from the group consisting of:quaternized dimethylaminoethylacrylates and quaternizeddimethylaminoethylmethacrylates.