Magnetizable composite microspheres of hydrophobic crosslinked p

Details Magnetizable composite microspheres of hydrophobic crosslinked p Magnetizable composite microspheres of hydrophobic crosslinked p

1993-06-01

1994-10-18

Nakarani, D. S.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

252 6254, 428403, 436526, B32B 516, G01N 33553

Patent

active

053567137

ABSTRACT:
Magnetizable composite microspheres approximately from 0.05 to 10 .mu.m in diameter, comprising a core of magnetizable particles and a shell of a hydrophobic crosslinked copolymer formed from a vinylaromatic monomer and a crosslinking emulsifying polymer. The microspheres are obtained by the pre-emulsification in water of a magnetic fluid composed of magnetizable particles dispersed in a vinylaromatic monomer and in a crosslinking emulsifying polymer, polymerization, separation of the magnetizable microspheres and optional redispersion in water. The microspheres are useful in biological applications.

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