PROBLEM TO BE SOLVED: To provide a method by which operation efficiency during dissolving of cation-modified water-soluble polymer powder in water is improved for sufficiently preventing formation of undissolved lumps during dissolving thereof in water in the method because a cation-modified water-soluble polymer has higher hydrating properties than those of a cation-unmodified water-soluble polymer.SOLUTION: The method for granulating the cation-modified water-soluble polymer is carried out as follows. Water or an aqueous solution of the cation-modified water-soluble polymer as a binder is added to the cation-modified water-soluble polymer and hydration and granulation are then conducted until the moisture in the cation-modified water-soluble polymer becomes the range of 1-13 mass%. Furthermore, the granulation is then carried out with a dry compression granulator.COPYRIGHT: (C)2008,JPO&INPIT【課題】カチオン変性水溶性高分子はカチオン変性していない水溶性高分子と比較して水和性が高く、上記の方法では水への溶解時にママコの発生を十分に防ぐためにカチオン変性水溶性高分子粉体の水への溶解時の作業性を改善する方法を提供する。【解決手段】カチオン変性水溶性高分子に水もしくはカチオン変性水溶性高分子水溶液をバインダーとして添加し、カチオン変性水溶性高分子の水分が1~13質量%の範囲になるまで加水造粒した後、更に乾式圧縮造粒機にて造粒させることを特徴とするカチオン変性水溶性高分子の造粒方法。【選択図】なし
