VERFAHREN ZUR HERSTELLUNG EINES KATALYSATORS ZUR POLYMERISATION VON ALPHA-OLEFINEN

摘要

This invention relates to a catalyst composition for polymerization of propylene, having high activity and producing polypropylene of high stereoregularity and having a low particle size distribution, which comprises; 1. REDUCING TiCl4 by diethylaluminum chloride (DEAC), thereby forming a reduced solid (TiCl3), 2. REMOVING THE ALUMINUM COMPOUNDS FROM THE REDUCED CATALYST, 3. TREATING THE SAID REDUCED SOLID WITH THE MIXTURE OR COMPLEX OF TiCl4 and diisoamylether (IAE) and 4. SEPARATING THE SOLID CATALYST FROM THE MIXTURE.