USE OF HYDROPHILLIC POLYMER DISPERSION CONTAINING A COLLOIDAL SILICA OR AN INORGANIC FLOCCULANT AS RETENTION AND DRAINAGE AIDS IN PAPER MAKING PROCESS

摘要

The method of the invention relates to forming an aqueous cellulosic papermaking slurry, adding an effective amount of a hydrophilic dispersion polymer containing a colloidal silica or an inorganic flocculant to the slurry with adding microparticles, as for example bentonite, after a polymer is addedto the slurry. The hydrophilic dispersion polymer comprises i) colloidal silica or ii) inorganic flocculant.