Borealis Technology Oy

Borealis Holding A/s

Neste Oy

Borealis Polymers Oy

W. R. Grace Co.-Conn.

Borealis Ag

Borealis A/s

Thomas Garoff

Timo Leinonen

Sirpa Ala-Huikku

Eero I Iiskola

Paivi Waldvogel

Kari Pesonen

Peter Denifl

Päivi Waldvogel

Marja Mustonen

Solveig Johansson

Jarmo Lindroos

Jukka Koskinen

Virginie Eriksson

Ulf Palmqvist

Esa Kokko

Michael Bartke

Erik Van Praet

Arja Kostiainen

Marita Oksman

Daniel Lindgren

Marita Sutela

Timo V Laine

Pauli Leskinen

Main Chang

Ali Harlin

Luciano Luciani

Markku Vahteri

Kalle Kallio

Auli Nummila-Pakarinen

Siw Bodil Fredriksen

Ole Jan Myhre

Irene Helland

Petri Rekonen

Irfan Saeed

Katrin Nord-Varhaug

Jorunn Nilsen

Fred Bergmann

Barbro U Lofgren

Jari Hatonen

P&auml;ivi Waldvogel

Marjo Väänänen

Aki Aittola

Jarmo Louhelainen

Marit Seim

P&auml;ivi Huovinen

Sirpa Ala Huikku

Katriina Mills

Jari HÄTÖNEN

Erik c/o Borealis Polymers Oy Van Praet

Young Ko Soo

Minna Stahlhammar

Peter Mann

Solveig Johansonn

The present invention relates to solid catalyst components comprising a reaction product of a titanium compound, a magnesium compound, an alcohol, an aluminum alkoxide, a siloxane mixture, and a maleate derivative; and catalyst systems comprising the solid catalyst components and organoaluminum compounds. The present invention also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing ethylene using the catalyst systems.

Ethylene polymerization catalysts

Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.

Supported donor modified ziegler-natta catalysts

A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m, and containing at least one &#x3b1;-olefin comonomer in addition to ethylene comprising: (A) 30 to 60 wt % of a lower molecular weight component being an ethylene homopolymer or a copolymer of ethylene and at least one &#x3b1;-olefin; and (B) 70 to 40 wt % of a higher molecular weight component being a copolymer of ethylene and at least one &#x3b1;-olefin, said &#x3b1;-olefin being the same or different from any &#x3b1;-olefin used in component (A) but with the proviso that both components (A) and (B) are not polymers of ethylene and butane alone; wherein the multimodal LLDPE has a dart drop of at least 700 g; and wherein components (A) and (B) are obtainable using a Ziegler-Natta catalyst.

Multi-stage process for producing multimodal linear low density polyethylene polymers

A process is disclosed for producing a multi-modal linear low density polyethylene in at least two staged reactors connected in series, comprising (i) polymerizing in a first slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A); and (ii) polymerizing in a second gas or slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B). The Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of formula (I) b) an aluminum compound of formula (II); and c) a vanadium compound and a titanium compound having a molar ratio (V:Ti) from 10:90 to 90:10; and 2) one or more organometallic cocatalvsts of formula (III). The linear low density polyethylene shows an improved comonomer composition distribution Formulas (I), (II), and (III) are described herein.

Multi-stage process for producing multi-modal linear low density polyethylene

The invention is directed to a process for producing an olefin polymerization catalyst wherein a solution of a soluble magnesium complex containing an element of is Group 13 or 14 of the Periodic Table (IUPAC) is contacted with a halogen containing transition metal compound of Group 3 to 10 of the Periodic Table (IUPAC) to obtain a solid catalyst complex comprising as essential components Mg, said element of is Group 13 or 14 of the Periodic Table (IUPAC) and said transition metal compound.

Method for the preparation of olefin polymerisation catalyst

The invention provides a process for producing an olefin polymerization catalyst, comprising an organometallic compound of a transition metal or of an actinide or lanthanide, in the form of solid catalyst particles, comprising forming a liquid/liquid emulsion system which comprises a solution of one or more catalyst components dispersed in a solvent immiscible therewith; and solidifying said dispersed phase to convert said droplets to solid particles comprising the catalyst and optionally recovering said particles.

Production of olefin polymerization catalysts

The present invention relates to a process for the production of catalysts, particularly of Ziegler-Natta type of catalysts for olefin polymerisation, to the catalysts as such, and to their use in polymerising olefins.

Method for the preparation of olefin polymerization catalysts

The invention is directed to a process for producing a particulate support for an olefin polymerisation catalyst wherein a solution of a magnesium compound is contacted with a solution of an element of Group (13 or 14) of the Periodic Table (IUPAC) to obtain a solid reaction product. In the process of the invention the solid reaction product is formed by: i) contacting (a) a solution of a magnesium hydrocarbyloxy compound with (b) a solution of a halogen-containing compound of an element of Group (13 or 14) of the Periodic Table (IUPAC); and ii) recovering the solidified reaction product from the reaction mixture.

Method for the preparation of olefin polymerization catalyst support and an olefin polymerization catalyst

The invention provides a process for producing an olefin polymerization catalyst comprising a catalyst component formed by contacting at least (a) a compound of Group 1 to 3 of the Periodic Table (IUPAC) with (b) a transition metal compound of Group 4 to 10 of the Periodic Table (IUPAC) or a compound of an actinide or lanthanide, in the form of solid catalyst particles, said process comprising: (1) preparing a solution from said compounds; (2) dispersing said solution to a solvent immiscible therewith and inert in relation to said compounds, to obtain an emulsion in which said solution forms the dispersed phase; and (3) solidifying the catalyst component in the dispersed droplets.

The invention relates to a complex comprising a magnesium dihalide and an electron donor. It is a complex of the magnesium dihalide and the electron donor and has the formula (I):MgX&#xb7;[R(OR')]&#x2003;&#x2003;(I)wherein MgXis the magnesium dihalide and R(OR&#x2032;)is the electron donor, X is a halogen, R is an n-valent C-Caliphatic group, an n-valent C-Caraliphatic group or an n-valent C-Cacylic group, R&#x2032; is a C-Calkyl group or a C-Caralkyl group, n is a number from 1 to 6 and m is defined as a number 0.5&#x2266;m&#x2266;2.0. The invention also relates to the preparation process of such a complex, as well as the use thereof for the preparation of olefin polymerization catalyst components.

Soluble magnesium dihalide complex, preparation and use

The invention relates to a process for the preparation of an olefin polymerisation catalyst component, said catalyst component and its use. The process is mainly characterized by the steps of

Catalyst component comprising magnesium, titanium, a halogen and an electron donor, its preparation and use

Especially homogeneous supported Ziegler-Natta catalysts may be prepared in a simple one reaction vessel process from a magnesium hydrocarbyloxy starting material which is soluble in a hydrocarbon solvent. The process comprises: (I) reacting a magnesium hydrocarbyloxy compound with a chlorine-containing compound in a non-polar hydrocarbon solvent in which said magnesium hydrocarbyloxy compound is soluble whereby to produce a solution (A); and then either: (II) contacting the solution (A) with a chlorine containing tetravalent titanium compound to produce a solution (B); (III) impregnating solution (B) into a porous particulate support; or (II) impregnating solution (A) into a porous particulate support; and (III) contacting the solid support with a chlorine containing tetravalent titanium compound; or (II) impregnating solution (A) into a porous particulate support pretreated with a chlorine containing tetravalent titanium compound.

Process for preparing a Ziegler-Natta catalyst

The invention relates to a new process for the preparation of an olefin polymerization catalyst component, as well as a new polymerization catalyst component and its use. In the process, a magnesium dialkyl or diahlide or alkyl alkoxide is reacted with an alcohol and the reaction product is reacted with an unsaturated dicarboxylic acid dihalide and a titanium tetrahalide. Especially good catalyst activity and morphology are achieved by using a polyhydric alcohol such as ethylene glycol.

A process for the preparation of an olefin polymerization catalyst component containing a magnesium dihalide, a titanium tetrahalide, and a dicarboxylic acid di- oligo- or polyester as internal electron donors is disclosed. A catalyst component and its use for the polymerization of &agr;-olefins such as propene are also disclosed.

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Helsinki, Finland

Thomas Garoff