Polymer-based composition for producting magnetic and magnetizable molded articles
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Apr 7, 1997
filing date -
Jun 11, 1994
priority date (Note) -
Expired
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Abstract
The invention is directed to a composition containing from 45 to 99 weight percent of a permanent-magnetic and/or ferromagnetic metal-containing compound and from 1 to 55 weight percent of a polymer of formula I HO--?--CO--R.sub.1 --CO--X--Y--Z--!.sub.n --H (I) wherein R.sub.1 is phenyl, naphthyl, cyclohexyl, cyclohexenyl, or a C.sub.1 to C.sub.4 alkyl-substituted derivative thereof, and, if R.sub.1 is phenyl, the carboxy groups are in ortho, meta or para position to each other; X, Z are O or NR.sub.2, wherein R.sub.2 is H or C.sub.1 to C.sub.4 alkyl; Y is (CH.sub.2).sub.m or phenyl, cyclohexyl or cyclopentyl, and m is from 1 to 12; and n is an integer. Furthermore, the invention is directed to a process for producing said composition, a magnetic and a non-magnetic molded article made of said composition, the production of same and the use of said composition.
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