METHOD FOR OBTAINING PARTICLE microspheroidal HOMODISPERSES, microspheroidal SILICA PARTICLE SPECIFIC SURFACE HIGH, CATALYSTS SUPPORTED ON THESE PARTICLES AND METHOD FOR POLYMERIZATION OF ALPHA-OLEFINS IN THE PRESENCE OF THESE CATALYSTS.

摘要

Process for obtaining homodisperses microspheroidal particles, characterized in that it comprises a spraying traves a spraying orifice and into a chamber, a liquid material (L) géifiable electrostatically charged so as to produce macrogouttes which sciendent micro-drops that fall in the bedroom and in which gelation occurs. The microspheroidal particles thus obtained can be collected on a solid surface or preferably in a liquid medium (C). Application to the manufacture of microspheroidal particles based on silica. Microsphéhroïdales these particles can be used as alpha-olefin polymerization catalyst supports.