| 摘要 |
<p>Sedimentation of insoluble materials in sulfuric acid during preparation of titanium dioxide, comprises adding water-soluble cationic polyelectrolyte with dialkylaminoalkyl groups, which were obtained by radical polymerization of a monomer composition comprising dialkylaminoalkyl(alk)acrylamide or its acid addition salt, to a digest composition, where at least part of the dialkylaminoalkyl groups of the polyelectrolytes are present as hydrogen sulfate.</p> |
