Borealis Ag

Borealis Technology Oy

Borealis Gmbh

Markku Vahteri

Jarmo Kela

Ravindra Tupe

Siw Bodil Fredriksen

John Jamieson

Mats Bäckman

Jani Aho

Jingbo Wang

Martin Anker

Victor Sumerin

Leif Leiden

Alexandra Romina Albunia

Irene Helland

Markus Gahleitner

Pauli Leskinen

Magnus Palmlöf

Joseph Thorman

Floran Prades

Jari Aarila

Erik A Eriksson

Luigi Resconi

Klaus Bernreitner

Per-Ola Hagstrand

Friedrich Berger

Katja Ellen Klimke

Thomas Garoff

Kauno Alastalo

Carl-Gustaf Ek

Torvald Vestberg

Joachim Fiebig

Mohammad Al-Haj Ali

Jeroen Oderkerk

Thomas Hjertberg

Vasileios Kanellopoulos

Yi Liu

Peter Niedersüss

Bill Gustafsson

Luca Boragno

Tanja Piel

Arild Follestad

Marja Mustonen

Solveig Johansson

Virginie Eriksson

Antti Tynys

Michiel Bergstra

Ole Jan Myhre

Davide Tranchida

Anneli Pakkanen

Andrey Buryak

Hans Eklind

Tore Dreng

Petri Rekonen

Magnus Palmloef

Marja Ora

Ricardo Godoy-Lopez

Tuomas Noopila

Jari Hatonen

Willem De Wever

Esa Kokko

Merete Skar

Janne Maaranen

Jari Äärilä

Katrin Nord-Varhaug

Udo Wahner

Saeid Kheirandish

Matthias Hoff

Jorunn Nilsen

Albrecht Dix

Pal Christian Bentzrod

Renate Eckmayr

Marit Seim

Shital Das

Marjo Väänänen

Alexander Krajete

Ilke Senol

Mattias Hoff

Tarja-Tuulikki Turpeinen

Karl Isak Skau

May-Lis Andersson

Kenneth Lund

Mats Baeckman

Tuula Sivonen

Jani Äärilä

Anna Fait

Jari {umlaut Over ( )}Äärilä

Willem Wever

Markus Zach

Sloveig Johansson

Peter NIEDERSÜSS

John Severn

Omar Delgadillo

The present invention relates to a process for producing a prepolymerized solid Ziegler-Natta catalyst in batch mode, a prepolymerized solid Ziegler-Natta catalyst, a process for producing a propylene polymer using said prepolymerized solid Ziegler-Natta catalyst, a prepolymerized solid Ziegler-Natta catalyst obtained by a process as well as the use of the prepolymerized solid Ziegler-Natta catalyst in a process for producing a propylene polymer.

Process for producing a prepolymerized solid Ziegler-Natta catalyst

The present invention relates to a propylene polymer composition comprising a long chain branched propylene polymer, wherein said propylene polymer composition has a) a crystallization temperature Tc of less than 115&#xb0; C., b) a melting temperature Tm of less than 155&#xb0; C. c) a F30 melt strength of from 5.0 to less than 30.0 cN, and d) a V30 melting extensibility of more than 190 mm/s, a process for producing said propylene polymer composition by reactive modification of a propylene polymer in the presence of a peroxide, an article comprising said propylene polymer composition, the use of said propylene polymer composition for producing an article.

Long chain branched propylene polymer composition

The present invention is directed to a multimodal polyethylene copolymer comprising a first and a second copolymer of ethylene and at least two alpha-olefin comonomers. Such multimodal copolymers are highly suitable for conversion processes that require a high Draw Down Ratio, like the production of thin films. Such multimodal polyethylene copolymers provide a good impact strength in the sense of a high Dart drop impact strength (DDI) and good isotropy of the films produces thereof. The invention further presents final articles such as films made therefrom.

Multimodal copolymer of ethylene and at least two alpha-olefin comonomers and final articles made thereof

The invention relates to a polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), thus having a broad sealing window.

Polypropylene composition combining low sealing initiation temperature and high melting temperature

The present invention relates to a process for producing ethylene copolymers in a multistage process comprising at least one slurry phase polymerization stage and at least one gas phase polymerization stage in the presence of Ziegler Natta catalyst comprising a solid catalyst component, a cocatalyst of a compound of group 13 metal and an external additive selected from alkoxysilanes of formula (I) RSi(OR), (I) where n is an integer 0 to 3, each Rare equal or different and are selected among H, halogen, alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the Rgroups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, provided that all Rare not hydrogen, Rare equal or different and are selected among alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the ORgroups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, halogen is Br, Cl or F. The invention further relates to the catalysts and use thereof in said multistage process r for producing ethylene copolymers having melt flow rate ratio FRRat least 40 and/or polydispersity index PDI of at least 27.

Process for producing polyethylene

Heterophasic polyolefin composition with improved optical properties, its preparation, articles made therefrom, particularly films, and use of the heterophasic polyolefin composition.

Heterophasic polyolefin composition having improved optical properties

The present invention is directed to a multimodal polyethylene copolymer comprising a first and a second copolymer of ethylene and at least two alpha-olefin comonomers. The multimodal polyethylene copolymer is highly suitable for the production of films providing high impact strength in the sense of high Dart drop impact strength (DDI) and low extractables. The invention further presents final articles such as films made therefrom.

Multimodal polyethylene copolymer

A process for producing copolymers of ethylene and at least one alpha-olefin having from 4 to 10 carbon atoms in the presence of a solid Ziegler-Natta catalyst comprising of magnesium, titanium, halogen and an internal organic compound, the copolymer having a density of from 906 to 937 kg/mand a melt flow rate MFRmeasured at 190&#xb0; C. under 21.6 kg load of from 3 to 150 g/10 min. The process includes the steps of (A) homopolymerising ethylene or copolymerising ethylene and a first alpha-olefin having from 4 to 10 carbon atoms in a first polymerisation stage in the presence of the polymerisation catalyst, hydrogen and optionally the first alpha-olefin; (B) copolymerising ethylene and a second alpha-olefin having from 4 to 10 carbon atoms in a second polymerisation stage in the presence of the first homo- or copolymer of ethylene and the Ziegler-Natta catalyst; and (C) recovering the polymer mixture.

Process for producing LLDPE resins

The present invention relates to a film comprising at least one layer which comprises a polymer composition comprising (a) a multimodal polymer of ethylene.

Film layer

The present invention relates to a polymer composition, to the use of the polymer composition in film applications and to a film comprising the polymer composition of the invention.

Polyethylene composition for a film layer

The present invention relates to a process for producing ethylene copolymers in a multistage process comprising at least one slurry phase polymerization stage and at least one gas phase polymerization stage in the presence of Ziegler Natta catalyst comprising a solid catalyst component, a cocatalyst of a compound of group 13 metal and an external additive selected from alkoxysilanes of formula (I) RSi(OR), (I) where n is an integer 0 to 3, each Rare equal or different and are selected among H, halogen, alkyl groups of 1 to 6 10 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the Rgroups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, provided that all Rare not hydrogen, Rare equal or different and are selected among alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the ORgroups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, halogen is Br, CI or F. The invention further relates to the catalysts and use thereof in said multistage process r for producing ethylene copolymers having melt flow rate ratio FRRat least 40 and/or polydispersity index PDI of at least 27.

The present invention is a process for producing low density copolymers of ethylene and alpha-olefins having from 4 to 10 carbon atoms in three polymerization stages in the presence of an olefin polymerization catalyst where a low molecular weight copolymer of ethylene is produced in two of the stages and a high molecular weight copolymer in one of the stages. The resulting copolymers have a low density of not more than 920 kg/m.

Multistage process for producing polyethylene compositions

An ethylene polymer with a density of less than 955 kg/mobtained by polymerisation with a single-site catalyst and having a shear thinning index SHIof less than 5 wherein ethylene polymer comprises two components.

Cross-linkable polyethylene resin for pipes made by a single-site catalyst

A multimodal ethylene copolymer with a density of at least 940 kg/mhaving an MFRin the range of 1 to 30 g/10 min and a F/&#x3bb;ratio of less than 60 cN/s; said ethylene copolymer comprising at least three components (I) an ethylene and optionally at least one C3-20 alpha olefin comonomer component forming 30 to 60 wt % of said ethylene copolymer; (II) an ethylene and optionally at least one C3-20 alpha olefin comonomer second component forming 30 to 60 wt % of said ethylene copolymer: and (III) an ethylene and optionally at least one C3-20 alpha olefin comonomer third component forming 3 to 20 wt % of said ethylene copolymer; wherein at least one of components (II) or (III) is a copolymer.

Multimodal polymer

The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFRof from 0.05 g/10 min to 5 g/10 min, a melt index MFRof from 0.5 to 10 g/10 min and a density of from 930 kg/m to 955 kg/m. Further, the multimodal ethylene copolymer comprises the multimodal ethylene copolymer comprises from 49 to 59% based on the weight of the multimodal ethylene copolymer a low molecular weight ethylene homopolymer component, said low molecular weight ethylene homopolymer having a weight average molecular weight of from 5000 g/mol to 70000 g/mol; and from 51 to 41% based on the weight of the multimodal ethylene copolymer a high molecular weight ethylene copolymer component, said high molecular weight ethylene copolymer having a weight average molecular weight of from 100000 g/mol to 700000 g/mol. The pipes can be coated with high throughput and good production economy. The coatings have good mechanical properties.

Coated pipe with high throughput using multimodal ethylene copolymer

Growing community of inventors

Porvoo, Finland

Markku Vahteri