公开(公告)号：US20240254264A1

公开(公告)日：2024-08-01

申请号：US18561455

申请日：2022-05-17

Applicant: Basell Polyolefine GmbH

Inventor： Gerhardus Meier ,  Ulf Schueller ,  Heike Gregorius ,  Gregor Hahn

IPC: C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/642

CPC classification number: C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/6421 ,  C08F2400/02

Abstract: A process for preparing an olefin polymer in a polymerization apparatus in the presence of a solid particulate polymerization catalyst and an organometallic compound, including the steps of withdrawing a gaseous stream from the polymerization apparatus, passing the gaseous stream through a bed of particulate solid having, at the surface of the particulate solid, chemical groups which are reactive with the organometallic compound, and feeding a sample of the gaseous stream into an analyzer.

公开(公告)号：US11518824B2

公开(公告)日：2022-12-06

申请号：US16755503

申请日：2018-10-05

Applicant: BASELL POLYOLEFINE GMBH ,  ALBERT-LUDWIGS-UNIVERSITAT FREIBURG

Inventor： Shahram Mihan ,  Heike Gregorius ,  Volker Fraaije ,  Rolf Mulhaupt ,  Fan Zhong

IPC: C08F4/02 ,  C08F4/6592 ,  B01J21/02 ,  C08F4/52 ,  B01J31/16 ,  B82Y30/00 ,  B82Y40/00

Abstract: A nano platelet gibbsite treated with compound of formula (ORa)3Si—Rb or of formula Rc—COOH wherein Ra equal to or different from each other is a C1-C10 alkyl radical; Rb is a C5-C30 hydrocarbon radical and Rc is a C5-C30 hydrocarbon radical is used as a catalyst support.