| 摘要 |
<p>A dispersant used in the preparation of an aqueous rosinous substance emulsion, which contains an active ingredient comprising a copolymer salt composed of monomer units having a specified oxyalkylene group and monomer units having a tertiary and/or quaternary nitrogen atom. Another dispersant used in the preparation of an aqueous rosinous substance emulsion, which contains at least one member selected from among a quaternary nitrogen monomer unit having a hydroxyl group, a quaternary nitrogen monomer unit having a vinylbenzyl group and a quaternary nitrogen monomer unit having a maleimide group and at least one member selected from a hydrocarbon monomer and a (meth)acrylic ester monomer unit. An aqueous rosinous substance emulsion prepared by using the dispersant, and a sizing agent containing the emulsion as an active ingredient.</p> |
