RESIN BONDED TYPE MAGNET COMPOSITION AND RESIN BONDED TYPE MAGNET

摘要

PROBLEM TO BE SOLVED: To obtain a composition and magnet having excellent forming property (melting fluidity) and mechanical strength by a mixture of and end group modi fied polyamide resin of number average molecular weight not exceeding a specific number and the end group modified polyamide resin of a number aver age molecular not exceeding a specific number. SOLUTION: Modified polyamide is a mixture of an end group modified polyamide resin of a number average molecular weight not exceeding 10000 and another end group modified polyamide resin of a number average molecular weight exceeding 30.000 wherein the end group is modified by monocarboxyl group hydrocarbon. Furthermore, assuming magnet particles to be 100wt.%, 2-24wt.% of modified polyamide resin of a number average molecular weight not exceeding 10.000, 2-24wt.% of the modified polyamide resin in the number average molecular weight exceeding 30.000 and 4-50wt.% of the total modified polyamide as well as 0.5-50wt.% of ethylene-ethylacrylate copolymer mixed with one another to obtain the title resin bonded type magnet composition.