Borealis Ag

Borealis Technology Oy

Lauri Huhtanen

Pascal Castro

Luigi Resconi

Peter Denifl

Kalle Kallio

Ville Virkkunen

Noureddine Ajellal

Eberhard Ernst

Marja Mustonen

Manfred Stadlbauer

John Severn

Ismo Lehtiniemi

Anu-Leena Hongell

Norbert Hafner

Sameer Vijay

Hans Eklind

Pertti Elo

Yvo Daniels

Michael Bartke

Mikko Lylykangas

Kimmo Hakala

Petri Lehmus

Franck Jacobs

Wendy Loyens

Soile Rautio

Pasi Matikainen

Tom Elovirta

Jeannette Aumo

Erik Mansner

Jyrki Kauhanen

Jari HÄTÖNEN

Jeanette Aumo

Marita Oksam

A catalyst comprising (i) a metallocene complex of a group (IV) metal said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier.

Catalyst

A process for the polymerization of at least one olefin comprising reacting said at least one olefin with a catalyst comprising: (i) a metallocene complex said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier.

Polymerisation process and catalyst

A solid particulate catalyst free from an external carrier comprising: 

Catalysts

Solid, particulate catalysts comprising bridged bis indenyl &#x3c0;-ligands are disclosed, together with methods for the preparation and use thereof, for example, in olefin polymerization.

Solid particulate catalysts comprising bridged metallocenes

A complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from &#x2014;R'C&#x2014;, &#x2014;R&#x2032;C&#x2014;CR&#x2032;&#x2014;, &#x2014;R&#x2032;Si&#x2014;, &#x2014;R&#x2032;Si&#x2014;SiR&#x2032;&#x2014;, &#x2014;R&#x2032;Ge&#x2014;, wherein each R&#x2032; is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each Ris a C4-C20 hydrocarbyl radical branched at the &#x3b2;-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the &#x3b2;-atom to the cyclopentadienyl ring where the &#x3b2;-atom is an Si-atom; n is 0-3; each Ris the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each Ris a hydrogen atom or a C-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an Rgroup each Ris the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R. 

A process for the preparation of a random propylene copolymer comprising polymerizing propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from &#x2014;R'C&#x2014;, &#x2014;R&#x2032;C&#x2014;CR&#x2032;&#x2014;, &#x2014;R&#x2032;Si&#x2014;, &#x2014;R&#x2032;Si&#x2014;SiR&#x2014;, &#x2014;R&#x2032;Ge&#x2014;, wherein each R&#x2032; is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each Ris a C4-C20 hydrocarbyl radical branched at the &#x3b2;-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the &#x3b2;-atom to the cyclopentadienyl ring where the &#x3b2;-atom is an Si-atom; n is 0-3; each Ris the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each Ris a hydrogen atom or a C1-6-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an Rgroup; each Ris the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R; and (ii) a cocatalyst comprising an organometallic compound of a Group 13 metal. 

Process for olefin polymerisation using group 4 metallocene as catalysts

Process for the preparation of a polypropylene, wherein propylene is polymerized optionally with a comonomer selected from the group consisting of ethylene, a C-C&#x3b1;-olefin and mixtures thereof, in the presence of a catalyst system comprising solid catalyst particles, wherein the solid catalyst particles (a) comprise a transition metal compound of formula (I) LRMX(I) wherein 'M' is a transition metal of anyone of the groups 3 to 10 of the periodic table (IUPAC), each 'X' is independently a monovalent anionic &#x3c3;-ligand, each &#x201c;L&#x201d; is independently an organic ligand which coordinates to the transition metal (M), each &#x201c;R&#x201d; is a bridging group linking two organic ligands (L), &#x201c;m&#x201d; is 2 or 3, preferably 2, &#x201c;n&#x201d; is 0, 1 or 2, preferably 1, &#x201c;q&#x201d; is 1, 2 or 3, preferably 2, m+q is equal to the valency of the transition metal (M), (c) comprise a cocatalyst (Co) comprising an element (E) of group 13 of the periodic table (IUPAC), preferably a cocatalyst (Co) comprising a compound of A1, wherein further the loss of activity of the solid catalyst particles during polymerization is at most 20%.

Preparation of polypropylene in the presence of a single-site catalyst

A polypropylene homopolymer with a melting point of less than 147&#xb0; C., a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %.

The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a subsequent polymerization stage with at least one olefin monomer.

Process for olefin polymerization

The present invention relates to a capacitor film comprising a biaxially oriented polypropylene wherein a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a draw ratio in transverse direction of at least 4.0, and b) said polypropylene has an electrical breakdown strength EB63% according to IEC 60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and in transverse direction of 4.0.

Electrical insulation film

Certain embodiments of the present technology provide a capacitor film comprising a polypropylene material. The capacitor film comprises xylene solubles of at least 0.5 percent by weight. In certain embodiments the xylene solubles are in a range of 0.5 to 1.5 percent by weight. The film also comprises a crystalline fraction melting in the temperature range of 200&#xb0; C. to 105&#xb0; C. determined by stepwise isothermal segregation technique. The crystalline fraction comprises a part, the part representing at least 10 percent by weight of said crystalline fraction, and wherein the part melts at a melting rate of 10&#xb0; C./min. Certain embodiments present a capacitor film where the part melts at or below 140&#xb0; C. In other embodiments, the said part melts at or below the temperature T=Tm&#x2212;3&#xb0; C., wherein Tm is the melting temperature of the capacitor film and/or the polypropylene material, and the part represents at least 45 percent by weight of the crystalline fraction.

Growing community of inventors

Loviisa, Finland

Lauri Huhtanen