| 摘要 |
<p>The invention relates to an improved process for preparation of cationic hollow polymer particle latexes having positive charge and high heat resistance and which are composed of a mixture of an anionic hollow particle latex and a melamine-formaldehyde resin having dry components in the weight range of 0.05 to 0.70. Said latexes can be used as opacifying agents, fillers, binders and extenders in coating and impregnating applications, particularly in acid-catalyzed thermosetting coatings. They are also useful as multifunctional additives in pulp and paper industry.</p> |
