COMPOSITION FOR SYNTHETIC RESIN COMPOSITION AND FORMED RESIN MAGNET

摘要

A composition for a synthetic resin magnet having a resin binder and a magnetic powder dispersed therein, characterized in that the resin binder comprises a thermoplastic resin as a primary resin and a polymerized fatty acid polyamide; a formed resin magnet such as a magnet roller for use in electrophotography prepared by forming the composition into a desired shape; and a formed resin magnet, characterized in that it is prepared by forming a composition for a resin magnet comprising a resin binder, a magnetic powder and a hindered phenol antioxidant at a temperature of 120 to 180 DEG which is higher than usual, into a desired shape. The compositions can be used for improving the fluidity during melting and maintaining good melt flowability even when an increased amount of a magnetic powder is filled, and accordingly for producing a formed product having a high magnetic force without the lowering of processability.