Borealis Ag

Pcd Polymere Gesellschaft M.b.h.

Borealis Technology Oy

Borealis Gmbh

Norbert Hafner

Markus Gahleitner

Klaus Bernreitner

Luigi Resconi

Wolfgang Neissl

Alexander Z Voskoboynikov

Georg Grestenberger

Wilfried Peter Töltsch

Pascal Castro

Vyatcheslav V Izmer

Dmitry S Kononovich

Ville Virkkunen

Pirjo Jääskeläinen

Olli Tuominen

Päivi Pitkänen

Dmitry Vadimovich Uborsky

Luciano Luciani

Christelle Grein

Manfred Stadlbauer

Hans Ledwinka

Achim Hesse

Elisabeth Potter

Pavel Sergeevich Kulyabin

Lauri Huhtanen

Juliane Braun

Antonis Gitsas

Hermann Heinemann

Wilfried Peter Toltsch

Christian Paulik

Dirk Leistner

Rudolf Wölfer

Josef Kurz

Jimgbo Wang

Elisabeth Bruckm Uller

Friedrich Mitter

Wilfried T Oltsch

Manfred Ratzsch

Kurt Hammerschmid

Marcus Gahleitner

Martin Rauch

Markus Gahletiner

Pirjo JÄÄSKELÄINEN

Päivi PITKÄNEN

A process for the preparation of a heterophasic copolymer of propylene and ethylene comprising polymerizing propylene and ethylene in the gas phase in the presence of a solid particulate catalyst free from an external carrier comprising: (i) a symmetrical 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;2-, &#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-alkyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; Ris a C1-C20 hydrocarbyl radical; Ris a C1-C20 hydrocarbyl radical; Ris a tertiary C4-C20 hydrocarbyl radical; Ris a hydrogen atom or a C-hydrocarbyl radical; n is 0 to 3; Ris a C1-C20 hydrocarbyl radical and optionally two adjacent Rgroups taken together can form a further mono or multicyclic ring condensed to Ph ring optionally substituted by one or two groups R; and Ris a C1-C10 alkyl radical and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal; wherein the xylene soluble fraction (XS) of the heterophasic copolymer of propylene and ethylene has an intrinsic viscosity of at least 1.5 dl/g and an ethylene content of 10 to 70 wt %. 

Process for producing propylene copolymers in gas phase

Propylene homopolymer having a melt flow rate MFR(230&#xb0; C.) at least 50 g/10 min, a Mw/Mn at least 12.0 and a xylene cold soluble content (XCS) of at least 2.8 wt.-%.

Polypropylene with broad molecular weight distribution

Asymmetrical ligands

Polypropylene having a melt flow rate MFR(230&#xb0; C.) of at least 20 g/10 min; and a M/Mratio of at least 15.0.

Polypropylene with extreme broad molecular weight distribution

A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %; the heterophasic polypropylene resin has an MFR2 of 0.01 to 50 g/10 min; the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %; the heterophasic polypropylene resin has a notched charpy impact strength at &#x2212;20 C of at least 25 kJ/m, preferably at least 50 kJ/m; and wherein the MFR(Matrix)/MFR(XS)&#x2267;5, preferably &#x2267;10.

Heterophasic copolymers

A racemic 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;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, C-hydrocarbyl, tri(C-alkyl)silyl, C-aryl, C-arylalkyl or C-alkylaryl; Rand R&#x2032; are each independently a Chydrocarbyl radical optionally containing one or more heteroatoms from groups 14-16; R&#x2032; is a Chydrocarbyl group optionally containing one or more heteroatoms from groups 14-16 and optionally substituted by one or more halo atoms. 

Catalysts

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 %.

Solid particulate catalysts comprising bridged metallocenes

Propylene copolymer (a) comprising at least 1-butene as a comonomer, (b) having a comonomer content in the range of 1.0 to 3.0 wt.-%, (c) having a xylene soluble fraction equal or below 2.5 wt.-%, and (d) being partially crystallized in the &#x3b2;-modification.

Propylene-butene random copolymer produced in the presence of a metallocene catalyst

Propylene copolymer a. comprising at least 1-hexene as a comonomer, b. having a comonomer content in the range of 1.0 to 3.0 wt.-%, c. having a xylene soluble fraction equal or below 2.5 wt.-%, d. having a polydispersity index (PI) of equal or below 4.0 Pa, and e. being partially crystallized in the &#x3b2;-modification.

Propylene-hexene random copolymer produced in the presence of a metallocene catalyst

The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an &#x3b1;-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerization of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerization product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerization product, wherein the temperature in the gas phase reactor is at least 10&#xb0; C. higher than in the slurry reactor and to a polymer obtainable by this process. Furthermore, the invention relates to a propylene random copolymer prepared by copolymerization of propylene with a comonomer wherein the distribution of the comonomer determined according to the TREF method is multimodal, preferably bimodal, a propylene random copolymer prepared by copolymerization of propylene with a comonomer wherein the copolymer is having an elution interval determined according to the TREF method of 50&#xb0; C. or more, a propylene random copolymer prepared by copolymerization of propylene with a comonomer, wherein the random copolymer is a unimodal polymer and the elution interval determined by the TREF method is given by the equation Y&#x2266;4.5&#xb7;m+16 wherein Y is the elution interval in &#xb0; C. and m is the percentage of ethylene in the copolymer in wt. %, and to the use of such a copolymers for the production of a film, of an article by blow moulding or injection moulding, of a fiber or of a pipe.

Propylene random copolymer and process for the production thereof

The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an &#x3b1;-olefin comprising at least four carbon atoms, in the presence of a catalyst in a muiltistage process comprising polymerisation of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerisation product, wherein the temperature in the gas phase reactor is at least 10&#xb0; C. higher than in the slurry reactor and to a polymer obtainable by this process. Furthermore, the invention relates to a propylene random copolymer prepared by copolymerisation of propylene with a comonomer wherein the distribution of the comonomer determined according to the TREF method is multimodal, preferably bimodal, a peopylene radom copolymer prepared by copolymerisation of propylene with a comonomer wherein the copolymer is having an elution interval determined according to the TREF method of 50&#xb0; C. or more, a propylene random copolymer prepared by copolymerisation of propylene with a comonomer, wherein the random copolymer is a unimodal polymer and the elution interval determined by the TREF method is given by the equation Y&#x2266;4.5.m+16 wherein Y is the elution interval in &#xb0; C. and m is the percentage of ethylene in the copolymer in wt. %, and to the use of such a copolymers for the production of a film, of an article by blow moulding or injection moulding, of a fibre or of a pipe.

The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an &#x3b1;-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerization of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerization product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerizations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerization product, wherein the temperature in the gas phase reactor is at least 10&#xb0; C. higher than in the slurry reactor and to a polymer obtainable by this process. Furthermore, the invention relates to a propylene random copolymer prepared by copolymerization of propylene with a comonomer wherein the distribution of the comonomer determined according to the TREF method is multimodal, preferably bimodal, a propylene random copolymer prepared by copolymerization of propylene with a comonomer wherein the copolymer is having an elution interval determined according to the TREF method of 50&#xb0; C. or more, a propylene random copolymer prepared by copolymerization of propylene with a comonomer, wherein the random copolymer is a unimodal polymer and the elution interval determined by the TREF method is given by the equation Y&#x2266;4.5&#xb7;m+16 wherein Y is the elution interval in &#xb0; C. and m is the percentage of ethylene in the copolymer in wt. %, and to the use of such a copolymers for the production of a film, of an article by blow moulding or injection moulding, of a fiber or of a pipe.

Modifiers based on high-pressure polyethylenes or low-pressure ethylene copolymers or highly amorphous olefin elastomers or mixtures of these with polyethylenes or isotactic polypropylenes are added to highly amorphous polypropylenes to reduce their surface tack.

Modifiers based on ethylenes or amorphous olefin elastomers for reducing the surface tack of amorphous polypropylenes

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Linz, Austria

Norbert Hafner