SELF LIMITING CATALYST COMPOSITION AND PROPYLENE POLYMERIZATION PROCESS

摘要

A CATALYST COMPOSITION FOR THE POLYMERIZATION OF PROPYLENE COMPRISING ONE OR MORE ZIEGLER-NATTA PROCATALYS COMPOSITION COMPRISING ONE OR MORE TRANSITION METAL COMPOUNDS AND ONE OR MORE ESTERS OF AROMATIC DICARBOXYLIC ACID INTERNAL ELECTRON DONORS; ONE OR MORE ALUMINUM CONTAINING COCATALYST; A SELECTIVITY CONTROL AGENT (SCA) COMPRISING AT LEAST ONE SILICON CONTAINING COMPOUND CONTAINING AT LEAST ONE C1-10 ALKOXY GROUP BONDED TO A SILICON ATOM, AND ONE OR MORE ACTIVITY LIMITING AGENT (ALA) COMPOUNDS COMPRISING ONE OR MORE ALIPHATIC OR CYCLOALIPHATIC CARBOXYLIC ACIDS; ALKYL-, CYCLOALKYL- OR ALKYL(POLY)(OXYALKYL)-(POLY)ESTER DERIVATIVES THEREOF; OR INERTLY SUBSTITUTED DERIVATIVES OF THE FOREGOING.