Cooper & Dunham
Method of preparing composite particles comprising adhering wax particles to the surface of resin particles
 A method of preparing composite particles is disclosed, which comprises the steps of dispersing matrix organic resin particles having a polar group on a surface thereof in a hydrophilic organic liquid, water or mixture thereof to prepare a dispersion of the matrix organic resin particles; dispersing a wax in a hydrophilic organic liquid, water or mixture thereof by use of a nonionic surface active agent to prepare an emulsion of the wax; mixing the dispersion of the matrix organic resin particles and the emulsion of the wax in the presence of a surface active agent with a polarity opposite to that of the polar group on the matrix organic resin particles to obtain a dispersion in which finely-divided particles of the wax are caused to adhere to the surface of the matrix particles; and heating the dispersion to fix the finely-divided particles of the wax on the surface of the matrix organic resin particles. 
Ricoh Company, Ltd.
C C G
C08J C08J G03G
inventional inventional inventional
Akihiro Hiroshi Koichi Yoichiro Hiromitsu
Kotsugai Yamashita Katoh Watanabe Kawase