| 摘要 |
<p>A papermaking emulsion size comprising a rosinous substance, a dispersant and water, wherein the dispersant comprises an amphoteric, anionic or cationic copolymer comprising: (A) a vinyl ester of a carboxylic acid as an essential component, (B) an anionic unsaturated monomer and/or (C) a cationic unsaturated monomer.</p> |
