公开(公告)号：US09671047B2

公开(公告)日：2017-06-06

申请号：US15028690

申请日：2014-09-24

Applicant: Basell Polyolefine GmbH

Inventor： Heinz Vogt ,  Shahram Mihan ,  Gerd Mannebach ,  Lenka Richter-Lukesova ,  Markus Meierhöfer ,  Holger Brüning

IPC: F16L9/12 ,  C08F10/02 ,  C08F210/16

CPC classification number: F16L9/12 ,  C08F10/02 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17

Abstract: The present disclosure relates to a polyethylene composition of Raised Temperature Resistance, having the following features: 1) a density from 0.935 to 0.945 g/cm3; 2) a melt flow index MIF from 10 to 18 g/10 min; 3) a melt flow index MIP from 1 to 2.5 g/10 min; and 4) a MIF/MIP ratio from 5 to 10.

公开(公告)号：US10392455B2

公开(公告)日：2019-08-27

申请号：US14365182

申请日：2012-12-17

Applicant: Basell Polyolefine GmbH

Inventor： Marc Oliver Kristen ,  Lenka Richter-Lukesova

IPC: C08F210/02 ,  C08F210/16 ,  C08F4/80 ,  C08F4/70

Abstract: A method of controlling the polymer composition of an ethylene copolymer in a process for preparing ethylene copolymers by copolymerizing ethylene and at least one other olefin in the presence of a polymerization catalyst system comprising at least one late transition metal catalyst component (A), at least one Ziegler catalyst component (B), and at least one activating compound (C) by adding an alkyl alkoxy silane or a dialkyl ether for increasing the relative portion of the ethylene copolymer component obtained from polymerization by late transition metal catalyst component (A), or by adding a saturated halogenated hydrocarbon for increasing the relative portion of the ethylene copolymer component obtained from polymerization by Ziegler catalyst component (B), processes for copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system comprising utilizing the controlling method, a method for altering the polymer composition of an ethylene copolymer obtained by copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system and a method for transitioning from one ethylene copolymer grade to another by using the method for altering the polymer composition.

公开(公告)号：US20160298795A1

公开(公告)日：2016-10-13

申请号：US15028690

申请日：2014-09-24

Applicant: BASELL POLYOLEFINE GMBH

Inventor： Heinz Vogt ,  Shahram Mihan ,  Gerd Mannebach ,  Lenka Richter-Lukesova ,  Markus Meierhõfer ,  Holger Brüning

IPC: F16L9/12 ,  C08F210/16

CPC classification number: F16L9/12 ,  C08F10/02 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/17

Abstract: The present disclosure relates to a polyethylene composition of Raised Temperature Resistance, having the following features: 1) a density from 0.935 to 0.945 g/cm3; 2) a melt flow index MIF from 10 to 18 g/10 min; 3) a melt flow index MIP from 1 to 2.5 g/10 min; and 4) a MIF/MIP ratio from 5 to 10.