(19)
(11) EP 0 350 781 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.03.1991 Bulletin 1991/12

(43) Date of publication A2:
17.01.1990 Bulletin 1990/03

(21) Application number: 89112316.8

(22) Date of filing: 06.07.1989
(51) International Patent Classification (IPC)5: H01F 1/08, H01F 1/113, H01F 41/02
(84) Designated Contracting States:
BE CH DE FR GB IT LI NL SE

(30) Priority: 12.07.1988 JP 171832/88
24.04.1989 JP 101555/89

(71) Applicant: IDEMITSU KOSAN COMPANY LIMITED
Tokyo 100 (JP)

(72) Inventor:
  • Hiroshi, Kawato
    Sodegaura-machi Kimitsu-gun Chiba-ken (JP)

(74) Representative: Türk, Gille, Hrabal, Leifert 
Brucknerstrasse 20
40593 Düsseldorf
40593 Düsseldorf (DE)


(56) References cited: : 
   
       


    (54) Magnetic powder material and resin-bonded type magnet


    (57) There are disclosed a magnetic powder material which comprises a crystalline thermoplastic resin excellent in heat resistance which is coated or adhered to magnetic powder with 0.1 to 5 % by weight and a resin-bonded type magnet which comprises a cold compression molded material of said magnetic powder material. Also disclosed are methods for preparing these materials with high efficiency.





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