公开(公告)号：US20040077807A1

公开(公告)日：2004-04-22

申请号：US10272789

申请日：2002-10-17

Applicant: Equistar Chemicals L.P.

Inventor： Karen L. Neal-Hawkins ,  Sandor M. Nagy ,  William J. Sartain ,  Kiran M. Gupte ,  Kenneth W. Johnson

IPC: C08F004/44 ,  B01J031/00

CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/6592 ,  C08F4/65925 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/65916 ,  C08F2/34 ,  C08F2/002 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/18 ,  C08F2500/24

Abstract: Olefin polymerization in the presence of heterogeneous supported catalysts is improved by incorporating into the supported catalyst a unifunctional hydrophobic tether comprising a hydrophobic portion containing no basic nitrogen and a univalent reactive group. The unifunctional hydrophobic tether reduces fouling and sheeting in gas phase polymerization processes and improves polymer morphology and bulk density in slurry polymerization processes, while substantially maintaining or enhancing catalyst polymerization activity.

Abstract translation: 在非均相负载的催化剂存在下的烯烃聚合通过将含有不含碱性氮和一价反应性基团的疏水部分的单官能疏水系链引入负载型催化剂来改进。 单功能疏水系链减少了气相聚合过程中的结垢和铺层，并改善了淤浆聚合过程中的聚合物形态和堆积密度，同时大大维持或增强了催化剂的聚合活性。