Magnetic material composite particles and a method of manufacturing the same

    公开(公告)号:JP4639696B2

    公开(公告)日:2011-02-23

    申请号:JP2004251635

    申请日:2004-08-31

    Abstract: PROBLEM TO BE SOLVED: To obtain a magnetic substance composite particle that is especially useful as a biochemical carrier and satisfies both excellent dispersibility and magnetic separation properties in a high dimension and is widely useful in a coating, paper, electronic material, electrophotography, cosmetic, medicine, agrochemical, food, catalyst, etc., other than a biochemical carrier and to provide a method for producing the same. SOLUTION: The magnetic substance composite particle comprises f[%] of a magnetic substance fine particle having ≤0.05μm average particle diameter in the inside of the particle and has d[μm] average particle diameter and satisfies formula 1: 20≤f≤80, formula 2: 0.2≤d≤5.0 and formula 3: 60-30d≤f≤90-12d. COPYRIGHT: (C)2006,JPO&NCIPI

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