Total Research & Technology Feluy

Total Petrochemicals Research Feluy

Atofina Research S.a.

Solvay Polyolefins Europe-belgium S.a.

Totalenergies Onetech Belgium

Eric Damme

Daniel Siraux

Louis Fouarge

Renaud Oreins

Olivier Miserque

Daan Dewachter

Philippe J Bodart

Philippe Marechal

Marc Moers

Etienne Laurent

Hugo Vandaele

Marc Van Der Auwera

Mark Verleysen

Carl Van Camp

Pascal Folie

Giacomo Conti

Frans Van Den Brande

Kai Hortman

Marjan Sillis

Leopold D'Hooghe

Andre Lewalle

Alvaro Fernandez

Aurélien Vantomme

Jacques Michel

Jean-Louis Costa

Marc Dupire

Serge Bettonville

Bernard Van Der Schrick

Jerome Bette

Fabian Siberdt

Lieven Van Looveren

André Lewalle

Jerôme Bette

Fabian Sibendt

Virgile Rouyer

Virgil Rouyer

A process for preparing a multimodal polyethylene product with at least two different polyethylene resins includes producing a first polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The Ziegler-Natta catalyst used for the production of the first polyethylene resin has an average particle size (D50) of at most 15 &#x3bc;m. The process includes separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The process includes physically blending together the first and second polyethylene resins to produce a multimodal polyethylene product.

Process for preparing ziegler-natta produced polyethylene blends

The present invention relates to an apparatus and process for polymerizing olefins. One embodiment comprises polymerizing at least one monomer in a first loop reactor in the presence of a catalyst to produce a first polyolefin fraction. A portion of the first polyolefin fraction is transferred to a second loop reactor, connected in series with the first loop reactor. The process further comprises polymerizing in the second loop reactor at least one monomer in the presence of a catalyst to produce a second polyolefin fraction in addition to the first polyolefin fraction. The combination of the first and second polyolefin fractions can produce a polymer resin fluff having bimodal molecular weight distribution.

Double loop technology

A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.942 to 0.970 g/cmand an HLMI of from 0.5 to 150 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a chromium catalyst in a reactor. The process can include physically blending together the first polyethylene resin and the second polyethylene resin to produce the homogeneous polyethylene product. The homogeneous polyethylene product can include at least 25% by weight of the first polyethylene resin.

Process for preparing polyethylene blend comprising metallocene produced resins and chromium produced resins

A process for preparing a polyolefin product can include providing a first high molecular weight (HMW) polyolefin resin having an HLMI of between 0.01 and 5 g/10 min, and separately providing a second low molecular weight (LMW) polyolefin resin having an MIof between 1 and 150 g/10 min. A device can be used to continuously physically melt and blend the first HMW polyolefin resin and the second LMW polyolefin resin to produce the polyolefin product. The device can include at least two feeding zones spatially separated and operably connected to each other. At least a art of the first HMW polyolefin resin is introduced in a first feeding zone, and at least a part of the second LMW polyolefin is introduced in a second feeding zone different from the first zone.

Process for preparing polyolefin blends in a device for continuously physically melting and blending the blends

The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of The present invention also concerns a process for the recovery of unreacted monomers from a gas phase or slurry polymerization process, and also concerns a process for the production of polyolefins.

Process for monomer recovery from a polymerization process

A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.940 to 0.970 g/cm. The first polyethylene resin can have a Low Molecular Weight (LMW) with an MIof between 2 and 250 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The second polyethylene resin can have a High Molecular Weight (HMW) with an MIof between 0.01 and 15 g/10 min. The process can include physically blending together the first polyethylene resin and the second polyethylene resin to produce the homogeneous polyethylene product.

Process for preparing polyethylene blend comprising metallocene produced resins and Ziegler-Natta produced resins

The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.

Reactor for preparing polyolefin

A process for preparing a multimodal polyethylene product with at least two different polyethylene resins can include producing a first polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The Ziegler-Natta catalyst used for the production of the first polyethylene resin has an average particle size (D50) of at most 15 &#x3bc;m. The HLMI of the first polyethylene resin is between 0.01 and 5 g/10 min. The process can include separately producing a second polyethylene resin in the presence of a Ziegler-Natta catalyst in a reactor. The MIof the second polyethylene resin is between 1 and 150 g/10 min. The process can include physically blending together the first and second polyethylene resins to produce a multimodal polyethylene product. The physical blending can be performed in a device for continuously melting and blending the first and second polyethylene resins.

Process for preparing Ziegler-Natta produced polyethylene blends

The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent through a sleeve provided around at least part of the shaft of the pump. Also, the invention relates to the use of anti-fouling agent to prevent or reduce fouling by feeding the anti-fouling agent against the impeller of the pump upon introduction to the loop reactor.

Process for preparing polyolefins

Reactor and process for preparing polyolefin

A method for the copolymerization of ethylene and a Colefin in a loop reactor and polymers formed therefrom are described herein. The method generally includes introducing an ethylene monomer, a Colefin and a diluent carrier liquid into a loop reactor. A catalyst system can be supplied to said loop reactor. The diluent liquid, ethylene monomer, and Colefin can be circulated through said loop reactor, while copolymerizing said ethylene and Colefin in the presence of said catalyst system to produce a slurry. The slurry can be diverted into a settling leg, and sequentially discharged therefrom and withdrawn from said loop reactor. An ethylene monomer co-feed can be introduced into said loop reactor at spaced locations downstream of the ethylene and diluent. The ethylene co-feed can be introduced in an amount effective to reduce the variation in the ratio of ethylene and Colefin.

Process for preparing polyolefin

Growing community of inventors

Arquennes, Belgium

Eric Damme