Polyamide plastic magnetic material and magnet made of same
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United States of America Patent
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Jan 20, 2004
Grant Date -
Feb 20, 2003
app pub date -
Jul 10, 2002
filing date -
Jul 25, 2001
priority date (Note) -
Expired
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Abstract
A polyamide plastic magnetic material excellent in fluidity is provided, and a plastic magnet made of the same is highly flexible with no deterioration in strength and does not crack during fabrication. The polyamide plastic magnetic material consists of: magnetic powder; polyamide resin; and a predetermined amount of bis unsaturated fatty acid amide represented by the formula: R.sub.1 --CONH--R.sub.3 --NHCO--R.sub.2 where R.sub.1 and R.sub.2 is an unsaturated hydrocarbon group having at least one double bond and R.sub.3 is a hydrocarbon group. The three components are kneaded into a final magnetic material.
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