SIZING AGENT FOR PAPER-MAKING

摘要

PURPOSE:To obtain the title sizing agent having steep rise of sizing effect and exhibiting the sizing effect in a short time after sizing, by using a specific ketene polymer and a dispersing agent as active components. CONSTITUTION:The objective sizing agent contains (A) a ketene polymer produced from a dimer acid and (B) preferably 5-30wt.% of a dispersing agent (preferably a cationic dispersing agent) as active components. The concentration of the emulsion of the dispersing agent is preferably 10-40wt.%.