Patent ID: 7713627
Filing Date: 2010-05-11
Classification: G01N,Y10S,Y10T

Abstract:
1. 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 R 1 and R 2 individually represent a hydroxyl group, a group shown by the following formula (2), or a group shown by the following formula (3), provided that R 1 and R 2 are not both hydroxyl groups, wherein R 3 represents an a linear, branched, or cyclic alkylene group having 2 to 6 carbon atoms or an arylene group, and wherein R 4 is a hydrogen atom or an alkyl group.