A PROCESS FOR PREPARING A BINDER RESIN USEFUL IN ELECTROPHOTOGRAPHIC TONER

摘要

The present invention relates to a process for preparing a partially corsslinked binder resin useful for electrophotographic toner, which comprises: 1) preparing a partially crosslinked polymer by way of: a non-crosslinking emulsion polymerization of an aromatic vinyl monomer, an acrylic monomer and a cyanide compound in a linear structure, and a cross-linking polymerization of an aromatic vinyl monomer, an acrylic monomer, a cyanide compound and an unsaturated carboxylic acid or an unsaturated monomer containing an epoxy group; and 2) coagulating the polymer latex obtained in step 1) in the presence of a water soluble amine.