COATING OF POROUS, SURFACE FUNCTIONALIZED, SUPERPARAMAGNETIC CRYSTAL-CONTAINING POLYMER PARTICLES WITH POLYISOCYANATE/DIOL AND/OR EPOXIDE MONOMERS

摘要

A process for the preparation of coated polymer particles containingsuperparamagnetic crystals, said process comprising reacting porous, surfacefunctionalized, superparamagnetic crystal-containing polymer particles ofdiameter 0.5 to 1.8 ~m with at least one polyisocyanate and at least one diolor at least one epoxide.