Core-shell particles, and method for separating and purifying substance to be separated using core-shell particles
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United States of America Patent
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Feb 27, 2024
Grant Date -
Aug 12, 2021
app pub date -
Jun 7, 2019
filing date -
Jun 14, 2018
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Abstract
The present invention aims to provide core-shell particles that can be used in a method of separating a substance to be separated and that allow obtainment of a highly purified product. Each of a plurality of core-shell particles (C) of the present invention includes a core layer (P) as magnetic silica particles containing the magnetic metal oxide particles (A) and a shell layer (Q) that is a silica layer on a surface of the core layer (P), an average thickness of a plurality of shell layers (Q) being 3 to 3000 nm, wherein a weight percentage of the magnetic metal oxide particles (A) in the core layer (P) is 60 to 95 wt % based on a weight of the core layer (P), and the plurality of core-shell particles (C) have a particle size distribution with a coefficient of variation of 50% or less.
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