| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous polymerization process for preparing an aqueous polymer dispersion. SOLUTION: The present invention relates to a process for preparing an aqueous polymer dispersion containing polymer particles dispersed in an aqueous medium. The process comprises providing first polymer particles, adding a hydrophobic polymerization blocker or a styrenic monomer polymerization blocker to the aqueous medium containing the first polymer particles and preparing second polymer particles in the presence of the first polymer particles. The aqueous polymer dispersion contains first polymer particles and the second polymer particles that differ in at least one property such as particle diameter, molecular weight, composition, glass transition temperature, or morphology, or contains polymer particles having a broad polydispersity. The aqueous polymer dispersion prepared by the process of this invention is useful in a wide range of applications, including paints, adhesives, binders for nonwovens, and binders for paper coatings. COPYRIGHT: (C)2008,JPO&INPIT
|
