COMPOSITION FOR RESIN-BONDED TYPE MAGNET

摘要

PROBLEM TO BE SOLVED: To obtain a composition for resin-bonded type magnet capable of providing a resin-bonded type magnet excellent in magnetic characteristics. SOLUTION: This composition comprises a magnetic powder containing a rare earth element, a polyamide resin and a polyolefin-based polymer having <=500 average polymerization degree. The polyamide resin preferably has 5,000-15,000 number average molecular weight, and 0-20 mg-eq./kg terminal amino group concentration. The polyamide resin is preferably a nylon homopolymer or a nylon copolymer containing nylon 11 or nylon 12 as the constituent unit.