Magnetic composite particles from crosslinked organopolysiloxane, process for their preparation and use of them in biology

Abstract

Abstract Magnetisable composite particles, as such or in aqueous dispersions consisting of a matrix based on a crosslinked organopolysiloxane, optionally bearing ion-forming and/or nonvinyl reactive units and, encapsulated in the said matrix, magnetisable fillers less than 300 ANGSTROM in size. <??>They are prepared by homogenisation of a solution of an organopolysiloxane bearing vinyl groups and optionally ion-forming and/or reactive units, of an organohydropolysiloxane optionally bearing ion-forming and/or reactive units and of a magnetic fluid in the presence of water and of a surfactant, hydrosilylation, removal of the solvents and optionally of water. <??>They can be employed in biology.

Inventors

• 👤 Frédéric Leising
• 👤 Ghislaine Torres

Bibliographic Details