PAPER QUALITY-IMPROVING AGENT

摘要

PROBLEM TO BE SOLVED: To provide an additive which is used to adding to paper and can remarkably improve the quality of a pulp sheet. SOLUTION: This paper quality-improving agent used for adding to paper comprises a polymer emulsion comprising a synthetic cationic polymer having an aqueous solution (7wt.%) viscosity of≥20mPas(50°C) and a nitrogen content of≤1.0wt.% and polymer particles having constituting units originating from a vinyl monomer and having a Tg of≤90°C. COPYRIGHT: (C)2004,JPO