Total Petrochemicals Research Feluy

Total Research & Technology Feluy

Centre National De La Recherche Scientifique

Solvay Polyolefins Europe-belgium

Atofina Research S.a.

Solvay Polyolefins Europe-belgium S.a.

Olivier Miserque

Daniel Siraux

Eric Damme

Philippe J Bodart

Renaud Oreins

Pascal Folie

Louis Fouarge

Philippe Marechal

Hugo Vandaele

Etienne Laurent

Marc Moers

Marc Van Der Auwera

Frans Van Den Brande

Giacomo Conti

Mark Verleysen

Carl Van Camp

Leopold D'Hooghe

Marjan Sillis

Kai Hortman

Andre Lewalle

Jean-François Carpentier

Jacques Michel

Jean-Louis Costa

Sophie Guillaume

Marc Dupire

Serge Bettonville

Marion Helou

Martine Slawinski

Fabian Siberdt

Yann Sarazin

Jean-Pierre Dath

Eric Maziers

Aurélien Vantomme

William John Gauthier

Christopher Willocq

Kai Hortmann

Alain Brusselle

Claire Bouvy

André Lewalle

George Vulpescu

Vincent Stephenne

Francine Genin

Kal Hortmann

Fabian Sibendt

Virgile Rouyer

Virgil Rouyer

Vincent Warichet

A process for purifying an olefin-containing hydrocarbon feedstock comprising the steps of:

Method to purify olefin-containing hydrocarbon feedstocks

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 polyethylene resin having a multimodal molecular weight distribution in at least two loop slurry reactors connected in series can include polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene resin. The supported metallocene catalyst can have a particle size distribution of a span value lower than 2.5 and a D50 value within the range of from 5 &#x3bc;m to 20 &#x3bc;m.

Process for preparing a polyethylene resin

This invention relates to the synthesis of polycarbonates prepared from carbonate monomers derived from the biomass in the presence of a system comprising an organometallic transfer agent and alcohol. It also relates to the polymers resulting from these cyclic compounds.

Monomers issued from renewable resources and process for polymerising them

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.

A method for the copolymerization of ethylene and a C+ olefin copolymer in a loop reactor system and polymers formed therefrom are described herein. The method generally includes introducing an ethylene monomer, a C+ alpha olefin comonomer and a diluent carrier liquid into a reactor system comprising at least one loop reactor; supplying at least one polymerization catalyst system to said reactor system; circulating said diluent liquid, ethylene monomer, and alpha olefin copolymer through said loop reactor while copolymerizing said ethylene and said alpha olefin monomer in the presence of said catalyst system to produce a slurry of polymer fluff particles in said diluent carrier liquid; diverting the flow of said slurry through said loop reactor into at least one settling leg connected to the loop reactor and sequentially discharging the settled polymer slurry from said at least one settling leg to withdraw said polymer slurry from said reactor system; and introducing an ethylene monomer co-feed into said loop reactor at least two spaced locations downstream of the point of introduction of ethylene comonomer and diluent in subparagraph a), said ethylene co-feed being introduced in an amount effective to reduce the variation in the ratio of ethylene monomer and comonomer within said loop reactor.

This invention relates to the polymerisation of five-, six- or seven-membered cyclic carbonates by ring-opening polymerisation in the presence of a system comprising a metal salt such as triflate, triflimidate, acetylacetonate or carboxylate and an alcohol.

Catalytic process for polymerising cyclic carbonates issued from renewable resources

This invention discloses caps and closures for carbonated drinks produced by injection moulding or by compression moulding with a bimodal high density polyethylene (HDPE) resin.

Caps and closures

The invention discloses a metallocene catalysed slurry polymerisation process of ethylene in the presence of a low concentration of scavenger. This allows improving the anti-sheeting of the reactor during the polymerisation process.

Slurry polymerisation process of ethylene in the presence of low amount of scavenger

An olefin polymerisation process carried out in the presence of an anti-fouling agent and a chromium-type catalyst or Ziegler Natta catalyst; characterised in that the anti-fouling agent comprises an anti-fouling polymer having an average molecular weight (Mw) of greater than 1000 daltons and containing: (1) one or more blocks &#x2014;(CH&#x2014;CH&#x2014;O)&#x2014; where each k is in the range from 1 to 50; and (2) one or more blocks &#x2014;(CH&#x2014;CH(R)&#x2014;(O)where R comprises an alkyl group having from 1 to 6 carbon atoms and each n is in the range from 1 to 50, and terminated by a R' and a R&#x2033; end groups, wherein R&#x2032; is OH or an alkoxy having from 1 to 6 carbon atoms and R&#x2033; is H or an alkyl having from 1 to 6 carbon atoms.

Olefin polymerization process in the presence of an anti-fouling agent

A propylene polymerisation process carried out in the presence of an anti-fouling agent; characterised in that the anti-fouling agent comprises an anti-fouling polymer containing:

Olefin polymerisation process in the presence of an anti-fouling agent

A polyethylene resin comprising from 35 to 49 wt. % of a first polyethylene fraction of high molecular weight and from 51 to 65 wt. % of a second polyethylene fraction of low molecular weight, the first polyethylene having a density of up to 0.930 g/cm, and an HLMI of less than 0.6 g/10 min and the second polyethylene fraction comprising a high density polyethylene having a density of at least 0.969 g/cmand an MIof greater than 10 g/10 min, and the polyethylene resin, having a density of greater than 0.946 g/cm, an HLMI of from 1 to 100 g/10 min, a dynamical viscosity, measured at 0.01 radians/second, greater than 200,000 Pa&#xb7;s and a ratio of the dynamical viscosities measured at, respectively 0.01 and 1 radians/second greater than 8.

Process for producing polyethylene pipe resins

Growing community of inventors

Mont-Saint-Guibert, Belgium

Olivier Miserque