CA2171103A1 - Gas phase polymerization of olefins - Google Patents

Gas phase polymerization of olefins

Info

Publication number
CA2171103A1
CA2171103A1 CA002171103A CA2171103A CA2171103A1 CA 2171103 A1 CA2171103 A1 CA 2171103A1 CA 002171103 A CA002171103 A CA 002171103A CA 2171103 A CA2171103 A CA 2171103A CA 2171103 A1 CA2171103 A1 CA 2171103A1
Authority
CA
Canada
Prior art keywords
gas phase
polymers
reactor
olefins
constrained geometry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002171103A
Other languages
French (fr)
Other versions
CA2171103C (en
Inventor
Robert D. Swindoll
Bruce A. Story
Brian W. S. Kolthammer
Kevin P. Peil
David R. Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BP Chemicals Ltd
Original Assignee
Robert D. Swindoll
Bruce A. Story
Brian W. S. Kolthammer
Kevin P. Peil
David R. Wilson
The Dow Chemical Company
Bp Chemicals Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert D. Swindoll, Bruce A. Story, Brian W. S. Kolthammer, Kevin P. Peil, David R. Wilson, The Dow Chemical Company, Bp Chemicals Limited filed Critical Robert D. Swindoll
Priority claimed from PCT/US1994/010621 external-priority patent/WO1995007942A1/en
Publication of CA2171103A1 publication Critical patent/CA2171103A1/en
Application granted granted Critical
Publication of CA2171103C publication Critical patent/CA2171103C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Novel gas phase fluidized bed process for producing ethylene polymers having improved processability. Multiple reactors in series or parallel may be used to produce in-situ blended polymers. Each reactor can separately have a constrained geometry catalyst or a conventional Ziegler-Natta catalyst as needed for obtaining in-situ blended polymer with the desired properties as long as there is a constrained geometry catalyst in at least one reactor. Olefin polymers can be produced according to this invention having low susceptibility to melt fracture, even under high shear stress conditions.
CA002171103A 1993-09-17 1994-09-16 Gas phase polymerization of olefins Expired - Fee Related CA2171103C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12285293A 1993-09-17 1993-09-17
US08/122,852 1993-09-17
PCT/US1994/010621 WO1995007942A1 (en) 1993-09-17 1994-09-16 Gas phase polymerization of olefins

Publications (2)

Publication Number Publication Date
CA2171103A1 true CA2171103A1 (en) 1995-03-23
CA2171103C CA2171103C (en) 2006-02-21

Family

ID=35904130

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002171103A Expired - Fee Related CA2171103C (en) 1993-09-17 1994-09-16 Gas phase polymerization of olefins

Country Status (1)

Country Link
CA (1) CA2171103C (en)

Also Published As

Publication number Publication date
CA2171103C (en) 2006-02-21

Similar Documents

Publication Publication Date Title
HU9600633D0 (en) Gas phase polymerization of olefins
EP0339804B1 (en) Modified polypropylene, process for making article made from the same
EP0527221B1 (en) Process for preparing polyolefins having a bimodal molecular weight distribution
CA2294384A1 (en) Olefin polymerization process
EP0307907B1 (en) Process for olefin polymerization
ATE194994T1 (en) POLYMERIZATION PROCESS IN A SERIES OF REACTORS
CA2207910A1 (en) Process for preparing polyethylene
ATE173484T1 (en) METHOD FOR PRODUCING OLEFIN POLYMERS AND PRODUCTS PRODUCED BY THIS METHOD
EP0770629A3 (en) A process for preparing an in situ polyethylene blend
AU3951089A (en) Preparation of propylene/ethylene polymers of the toughened polypropylene type
NO129465B (en)
US4621124A (en) Catalyst system for the polymerization of ethylene
JP2002528622A (en) Ethylene / α-olefin elastomer polymer composition having improved extrusion processability
FI956289A (en) Method for obtaining polyolefins with a wide bimodal or multimodal molecular weight distribution
KR100505782B1 (en) Processes for producing copolymers of ethylene and at least one other olefin
CA2171103A1 (en) Gas phase polymerization of olefins
WO2004060924A3 (en) Polymerization of olefins using a ziegler-natta catalyst system having an external electron donor
JPS5811448B2 (en) Manufacturing method of block copolymer
EP0527144B1 (en) Solution process for the preparation of polymers of alpha-olefins
KR900007873A (en) Continuous production method of catalyst for low pressure polymerization of olefin
EP0905145A1 (en) Production of polyethylene having improved crack resistance
WO2000001735A1 (en) A process for polymerizing monomers
Fujita Production of Olefin Polymers
Promel Process for preparing an ethylene polymer composition, ethylene polymer composition, and its use
Fujita et al. Process for Producing alpha-Olefin Polymers

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed