ROBUST SPRAY-DRIED ZIEGLER-NATTA PROCATALYST AND POLYMERIZATION PROCESS EMPLOYING SAME
摘要
<p>A Ziegler-Natta procatalyst composition in the form of solid particles and comprising magnesium, halide and transition metal moieties, said particles having an average size (D50) of from 10 to 70μm, characterized in that at least 5 percent of the particles have internal void volume substantially or fully enclosed by a monolithic surface layer (shell), said layer being characterized by an average shell thickness/particle size ratio (Thickness Ratio) determined by SEM techniques for particles having particle size greater than 30μm of greater than 0.2.</p>
申请公布号
EP1778746(A1)
申请公布日期
2007.05.02
申请号
EP20050784444
申请日期
2005.08.09
申请人
UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION
发明人
SPRIGGS, THOMAS, E.;TURNER, MICHAEL, D.;WAGNER, BURKHARD, ERIC;LEVANDOVSKY, ARTEM;LACKS, DANIEL, J.