CPC H01F 41/0253 (2013.01) [B29B 7/88 (2013.01); B29C 45/0001 (2013.01); H01F 1/0571 (2013.01); B29K 2077/00 (2013.01); B29K 2505/00 (2013.01); B29K 2995/0008 (2013.01)] | 17 Claims |
1. A method of producing a compound for thermoplastic resin-containing bonded magnets, the method comprising:
heat-curing a thermosetting resin and a curing agent having a ratio of a number of reactive groups of the curing agent to a number of reactive groups of the thermosetting resin of at least 2 but not higher than 11 to obtain an additive for thermoplastic resin-containing bonded magnets,
wherein the additive for thermoplastic resin-containing bonded magnets is a cured product of the thermosetting resin and the curing agent; and
kneading the additive for thermoplastic resin-containing bonded magnets, magnetic powder, and a thermoplastic resin to obtain the compound for thermoplastic resin-containing bonded magnets in which a filling ratio of the magnetic powder is at least 91.5% by mass.
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