Resinous soft magnetic composition
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsKeiichiro Suzuki, Masahito Tada
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Abstract
A resinous soft magnetic composition is constituted by (a) 80-95 wt. % of a powdery soft magnetic material, and (b) 5-20 wt. % of a resin component comprising (1) 70-99.5 wt. % of a polyarylene sulfide resin, and (2) 0.5-30 wt. % of an ultrahigh-molecular weight polyethylene having a weight-average molecular weight of from about 4.times.10.sup.5 to about 7.times.10.sup.6. Because of the inclusion of the ultrahigh-molecular weight polyethylene, the magnetic composition is provided with an improved melt-flowability suitable for injection molding while retaining a sufficient soldering heat-resistance as represented by a freeness of a molded product thereof from cracking after dipping in a solder bath at about 260.degree. C. for 10 sec.
Claims10
A resinous soft magnetic composition, comprising:
- (a) 80-95 wt. % of a powdery soft magnetic material, and
- (b) 5-20 wt. % of a resin component comprising
- (1) 70-99.5 wt. % of a polyarylene sulfide resin, and
- (2) 0.5-30 wt. % of an ultrahigh-molecular weight polyethylene having a weight-average molecular weight of from about 4.times.10.sup.5 to about 7.times.10.sup.6.
Dependencies are inferred from the claim text.