A colloidal size hydrophobic polymer particulate having discrete particles of an inorganic material dispersed therein
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0054832A1
公开(公告)日:1982-06-30
Colloidal size particles of an inorganic solid such as magnetic iron oxide or titanium dioxide are encapsulated in a hydrophobic addition polymer such as a polymer of styrene by a polymerization process wherein a water-immiscible (hydrophobic) monomer is dispersed in a stabilized aqueous colloidal dispersion of the inorganic particles and subjected to conditions of emulsion polymerization. The resulting encapsulated particles are usefully employed as catalysts, toners, pigments, and magnetic diagnostic latexes.
通过聚合工艺将无机固体(如磁性氧化铁或二氧化钛)的胶体大小颗粒封装在疏水性加成聚合物(如苯乙烯聚合物)中,在聚合过程中,水不溶(疏水)单体分散在无机颗粒的稳定水性胶体分散液中,并在乳液聚合条件下进行聚合。由此产生的封装颗粒可用作催化剂、调色剂、颜料和磁性诊断胶乳。