Novel epoxy resins and electrostatographic toner containing the same as a binder.

摘要

A process is disclosed for producing an epoxy resin comprising an active hydrogen compound having at least three active hydrogen atoms capable of reacting with an epoxy group in its molecule, or a modified oligomer based on butadiene or isoprene which has on average at least 1.5 equivalents of active hydrogen capable of reacting with an epoxy group in its molecule. A process for producing epoxy resin modified with a bisphenol and a compound having active hydrogen or acid anhydride groups capable of reacting with an epoxy group is also disclosed. A toner comprising the epoxy resin as a binder is useful in electrostatography.