METHOD FOR PREVENTING SLIME TROUBLE AT PAPER/PULP PRODUCTION STAGE WATER SYSTEM

摘要

PROBLEM TO BE SOLVED: To effectively prevent the slime trouble at a paper/pulp production stage water system by using an agent more high in safety. SOLUTION: In the slime trouble preventing method at the paper/pulp production stage water system, an effective amount of more than one polymers of dicarboxylic acid or polyphosphinocarboxylic acid selected from maleic acid polymerization product, acrylic acid-2-acryloyl amino-2-methyl-1-propane sulfonic acid/hypophosphorous acid addition polymerization product and its salt and bis(poly-2-carboxyethyl)phosphinic acid and its salt is added to the paper/pulp production stage water system.