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US 7,713,627 B2Granted
Magnetic particles comprising an organic polymer layer and method for producing the same
AssigneeJsr Corporation
InventorsKouji Tamori, Tetsuo Fukuta, Satoshi Katayose, Masaru Ueno, Mitsuhiro Murata
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Abstract
Magnetic particles comprising a group shown by the following formula (1): wherein R1 and R2 individually represent a hydroxyl group, a group shown by the following formula (2), or a group shown by the following formula (3), provided that R1 and R2 are not both hydrogen atoms, wherein R3 represents an a linear, branched, or cyclic alkylene group having 2 to 6 carbon atoms or an arylene group, and wherein R4 is a hydrogen atom or an alkyl group.
Claims14
Magnetic particles, each comprising
- a non-magnetic material nucleus;
- a magnetic material layer on the non-magnetic material nucleus;
- and
- an organic polymer layer on the magnetic material layer, wherein
- the organic polymer layer comprises an organic polymer comprising a group shown by the following formula (1) and a 2,3-dihydroxypropyl group,
- wherein R1 and R2 individually represent a hydroxyl group, a group shown by the following formula (2), or a group shown by the following formula (3), provided that R1 and R2 are not both hydroxyl groups,
- wherein R3 represents an a linear, branched, or cyclic alkylene group having 2 to 6 carbon atoms or an arylene group, and
- wherein R4 is a hydrogen atom or an alkyl group.
5 more elements
Dependencies are inferred from the claim text.