Borealis Technology Oy

Borealis Ag

Borealis A/s

Neste Oy

Borealis Polymers Oy

Bo Malm

Pauli Leskinen

Pirjo Jääskeläinen

Kauno Alastalo

Carl-Gustaf Ek

Olli Tuominen

Markus Gahleitner

Klaus Bernreitner

Torvald Vestberg

Franz Ruemer

Amir K Karbasi

Anders E Nymark

Petar Emilov Doshev

Norbert Reichelt

Michael Tranninger

Ulf Torgersen

Timo Leinonen

Peter Denifl

Magnus Palmlöf

Joachim Fiebig

Yi Liu

Cornelia Anita Tranninger

Arild Follestad

Antti Tynys

Esa Korhonen

Manfred Stadlbauer

Nina Ackermans

Michiel Bergstra

Cornelia Kock

Doris Machl

Päivi Pitkänen

John Severn

Juliane Braun

Stefan Schiesser

Karl-Michael Jäger

Tua Sundholm

Tonja Schedenig

Saeid Kheirandish

Michiel Friso Bergstra

P&auml;ivi Pitk&auml;nen

John Haugen

Pirjo Jaaskel&auml;inen

Werner Posch

Sybille Simon

Kshama Motha

Mika H&auml;rk&ouml;nen

Anne Britt Bj&aring;land

Mika Meller

Merja Poikela

Christer Lind

Erik Eriksson

P&auml;ivi Huovinen

Robert Nigel Hampton

Jari Hätönen

Rao Kona Balakantha

Andreas Wolf

Torwald Vestberg

Pirjo Jååskelåainen

Päivi Pitkånen

Reijo Perålå

Jari Lehtinen

Pirjo J&auml;&auml;skel&auml;inen

Tuula Telen

Tarja Mustonen

Pirjo Jaeaeskelaeinen

Nigel Hampton

Magnus Palmloef

Karl-Michael Jaeger

Pirjo JÄÄSKELÄINEN

Rick Folland

Paul Demink

Sybille Frank

Reijo Perälä

Process for producing of a capacitor film comprising the steps of (a) polymerizing propylene in the presence of a catalyst comprising a solid catalyst system obtaining a polypropylene, (b) subjecting said polypropylene to a film forming process obtaining a capacitor film, wherein during the polymerization step (a) said catalyst comprising the solid catalyst system fragments into nanosized catalyst fragments being distributed in said polypropylene, said solid catalyst system comprises a transition metal, a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and an internal electron donor.

Process for the manufacture of a capacitor film

Propylene homo- or copolymer composition comprising an in-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene (znPP) and a metallocene catalysed polypropylene (mcPP), in a weight ratio in the range of 6:94 to 50:50 (wt % znPP:wt % mcPP), preferably in the range of 10:90 to 44:56 (wt % znPP:wt % mcPP), having an excellent balance between optical properties, mechanical properties, thermal properties and processing properties; a process for its production and the use of a mixture of a Ziegler-Natta catalyst system and a metallocene catalyst system.

In-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene and a metallocene catalysed polypropylene

Heterophasic propylene copolymer comprising (a) a matrix (M) being a polypropylene (PP), said polypropylene (PP) has a polydispersity index (PI) of at least 5.0, and (b) an elastomeric propylene copolymer (EC) dispersed in said matrix (M), wherein (i) said heterophasic propylene copolymer has a melt flow rate MFR(230&#xb0; C.) of equal or below 1.0 g/10 min, (ii) the amorphous phase (AM) of the xylene cold soluble fraction (XCS) of the heterophasic propylene copolymer has an intrinsic viscosity (IV) of at least 3.5 dl/g.

Heterophasic polypropylene with excellent creep performance

The present invention relates to a process for the preparation of a propylene copolymer P1 having ethylene-derived comonomer units, which comprises the following steps: (i) introducing propylene, ethylene, and hydrogen into a polymerisation reactor R1, wherein the ethylene is fed to the polymerisation reactor R1 in a periodically varying amount, (ii) preparing the propylene copolymer in the polymerisation reactor R1 in the presence of a catalyst.

Preparation of propylene copolymer with dynamically operated reactor

The present invention is directed to a polypropylene composition comprising The present invention is furthermore directed to a polypropylene composition comprising The present invention is also directed to a process for the production of the polypropylene compositions according to the invention and to an article made of the polypropylene compositions according to the invention. The present invention is furthermore directed to the use of the polypropylene compositions according to the invention for the production of pipes, car components, appliance housings, transport containers.

Propylene composition with high stiffness and impact strength

The present invention relates to a heterophasic polypropylene composition with rather high melt flow rate, high stiffness, acceptable impact properties and an advantageous balance between stiffness and transparency. Still further, the present invention is also directed to a process for producing the inventive polypropylene composition, to an article made of the inventive polypropylene composition and to the use of the inventive polypropylene composition for the production of films and molded articles, such as thin-walled plastic containers for packaging. The inventive heterophasic polypropylene composition comprises at least a propylene homopolymer fraction, a propylene random copolymer fraction, two different ethylene-propylene rubber fractions and an ethylene homo- or copolymer fraction.

Heterophasic polypropylene with improved balance between stiffness and transparency

Heterophasic polypropylene composition comprising

Heterophasic polypropylene copolymer composition

Heterophasic propylene copolymer (HECO) comprising wherein the heterophasic propylene copolymer (HECO) is &#x3b2;-nucleated and the elastomeric phase has an intrinsic viscosity measured in tetraline at 135&#xb0; C. of equal or below 4.0 dl/g.

Beta-nucleated propylene copolymer

The present invention relates to a heterophasic polymer composition which comprises (i) a matrix comprising a propylene homopolymer and/or a propylene copolymer having an amount of comonomer units of less than 1.0 wt %, and (ii) an elastomeric polypropylene which is dispersed within the matrix and comprises comonomer units derived from ethylene and/or a C4 to C12 alpha-olefin; and wherein the heterophasic polymer composition has an amorphous fraction AM in an amount of 2.0 to 7.5 wt %, and the amorphous fraction AM has an amount of ethylene- and/or C4 to C12 alpha-olefin-derived comonomer units of 20 to 45 wt %.

Heterophasic polymer composition of high stiffness

Heterophasic polypropylene composition comprising (A) 45 to 70 wt % of a propylene homo- or copolymer matrix with an MFRin accordance with ISO 1133 (230&#xb0; C., 2.16 kg load) of &#x2267;80 g/10 min and (B) 25 to 40 wt % of an elastomeric propylene-ethylene copolymer, having an intrinsic viscosity IV (ISO 1628, with decalin as solvent) of &#x2267;3.3 dl/g and an ethylene content of 20 to 50 wt %, (C) 0-15 wt % of an elastomeric ethylene/alpha-olefin random copolymer (D) 3-25 parts per weight of inorganic filler, the heterophasic polypropylene compositions having a total MFR(230&#xb0; C./2.16 kg) in accordance with ISO 1133 of &#x2267;5 g/10 min, a Charpy notched impact strength according to ISO 179/1eA at +23&#xb0; C. of &#x2267;15.0 kJ/m2, preferably &#x2267;25.0 kJ/m, a minimum value for the Charpy notched impact strength according to ISO 179/1eA at &#x2212;200 C of &#x2267;7.0 kJ/m2, preferably &#x2267;10.0 kJ/mand a tensile modulus according to ISO 527-3 of &#x2267;1200 MPa; their preparation and use for producing injection molded articles being free of flow marks.

A pressureless polymer pipe, a composition therefore, and a process of preparing the composition are described. The pipe is characterized in that the polymer comprises a propylene polymer composition where the propylene base polymer is a heterophasic propylene copolymer having a matrix of a propylene homopolymer and a dispersed phase of an elastomeric copolymer of propylene and at least one olefin comonomer; has a comonomer content of 2-7% by weight, based on the weight of the heterophasic propylene copolymer; has a melt flow rate MFR (2/230), determined according to ISO 1133 C4, of 0.1-2.0 g/10 min; has a broad molecular weight distribution as defined by its rheology shear thinning index, SHI, measured at 200&#xb0; C. of 9-30; has a tensile modulus, determined according to ISO 527-2/1B at 1 mm/min and 23&#xb0; C. of at least 1800 MPa; has an impact strength, determined according to ISO 179/1 eA of at least 6 kJ/mat 0&#xb0; C. and at least 2 kJ/mat &#x2212;20&#xb0; C. The composition is a polymer composition as defined above. The process is characterized by polymerizing in the presence of a stereospecific Ziegler-Natta catalyst including an electron donor:(i) a propylene homopolymer matrix in at least one loop reactor at a temperature of at least 80&#xb0; C. and a pressure of 4600-10000 kPa; and (ii) an elastomeric copolymer of propylene and at least one olefin comonomer in at least one gas-phase reactor at a lower temperature than in stage (i); to obtain a base polymer of heterophasic propylene copolymer as defined above.

Pressureless polymer pipe, a compositon therefore, and a process for preparing it

The present invention relates to a polymer composition, comprising (i) a polypropylene homopolymer, (ii) a polypropylene random copolymer, prepared by copolymerization of propylene with an olefin comonomer and having an amount of olefin comonomer units of 0.2 to 5 wt %, and (iii) an elastomeric copolymer of propylene and at least one olefin comonomer, the polymer composition having a tensile modulus, determined according to ISO 527-2/1 B at 1 mm/min. and 230 C, of at least 1200 MPa.

High melt flow polymer of improved durability for pipe applications

The invention relates to a heterophasic alpha-olef&#xca;n random copolymer composition with a melting temperature (Tm) of at least 130&#xb0; C. and a flexural modulus of not higher than 1000 MPa5 whereby the inventive composition comprises an al-pha-olefin random copolymer component (A) of at least two alpha-olef&#xca;n (co)polymer fractions (i) and (ii) having a different comonomer content, whereby at least one of the fractions is an alpha-olef&#xca;n random copolymer, and a rubber component (B).

Heterophasic polymer composition and process for its preparation

The present invention relates to a polymer composition, comprising

Polypropylene composition comprising a propylene homopolymer (A) and a random propylene-butene copolymer (B) or a random propylene-ethylene copolymer (B') wherein the polypropylene composition is &#x3b2;-nucleated.

&#x3b2;-nucleated polypropylene composition

Growing community of inventors

Espoo, Finland

Bo Malm