TECHNOLOGY OF PRODUCTION OF MICROCAPSULES Russian patent published in 2000 - IPC

FIELD: microencapsulating of lubricating and cooling technological substances into shells that include ferromagnetic matters. SUBSTANCE: technology is based on microencapsulating process involving emulsification of material of nucleus in gelatin solution, injection of additives reducing solubility of gelatin, precipitation of gelatin on surface of drops of emulsion with subsequent solidification of formed polymer shells. Ferromagnetic particles in the amount of 20 to 60 per cent of mass of shell are injected additionally into composition of shells of microcapsules. Salts of polyvalent metals in the amount of 2.5-10.0 ml in the form of 2.5-% aqueous solution are used in process of joining of shells. EFFECT: production of microcapsules with high heat resistance of polymer shells displaying magnetic properties. 1 tbl