Borealis Technology Oy

Borealis Ag

Borealis Gmbh

Pcd Polymere Gesellschaft M.b.h.

Eberhard Ernst

Jens Reussner

Manfred Stadlbauer

Wolfgang Neissl

Yvo Daniels

Franck Jacobs

Lauri Huhtanen

Petri Lehmus

Herwig Schottenberger

Peter Denifl

Benno Bildstein

Manfred Kirchberger

Olli Tuominen

Hans Eklind

Michael Bartke

Christian Paulik

Kimmo Hakala

Wendy Loyens

Per Roterud

Kjell-Arne Solli

Ingo Wartusch

Michael Buchmeiser

Olaf Elsner

Herbert Angleitner

Christine Schliessburg

Karl Heinz Thiele

Peter NIEDERSÜSS

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

The present technology relates to a biaxially oriented polypropylene film. The biaxially oriented polypropylene film comprises a polypropylene material having xylene solubles of at least 0.5 percent by weight. The polypropylene also has a strain hardening index of at least 0.15 measured at a deformation rate d&#x3b5;/dt of 1.00 sat a temperature of 180&#xb0; C. In certain embodiments, the strain hardening index is defined as the slope of a logarithm to the basis 10 of a tensile stress growth function as a function of a logarithm to the basis 10 of a Hencky strain for the range of Hencky strains between 1 and 3.

Biaxially oriented polypropylene film

Multi-branched polypropylene having a g' of less than 1.00.

Multi-branched polypropylene

Certain embodiments provide an article comprising a substrate, wherein the substrate is extrusion coated with a composition comprising a multi-branched polypropylene having a g' of less than 1.00. In certain embodiments, the substrate is extrusion coated with a composition comprising a polypropylene material. Either the composition and/or the polypropylene material are represented by the equation:Vicat[&#xb0; C.]&#x3e;&#x2212;3.96&#xb7;[mol %]+86.85;wherein Vicat B is the heat resistance, according to ISO 306 (50 N), of the composition and/or the polypropylene material; and Cis the comonomer content the composition and/or the polypropylene material.

Extrusion coated substrate

The present invention relates to a process for the preparation of polypropylene using a catalyst system of low porosity, the catalyst system comprising an asymmetric catalyst, wherein the catalyst system has a porosity of less than 1.40 ml/g.

Process for the preparation of polypropylene

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.

A process for manufacturing a branched polypropylene, said branched polypropylene having a branching index g' of less than 1.00, the process comprising the step of polymerizing propylene and optionally one or more other comonomers under non-supercritical conditions in a reaction vessel, wherein:

Process for the manufacture of branched polypropylene

The present technology relates to a foam comprising a polypropylene material. The polypropylene material is produced in the presence of a metallocene catalyst, and the foam and/or the polypropylene has a branching index g' of less than 1.00 and a strain hardening index (SHI@1 s) of at least 0.30 measured by a deformation rate d&#x3b5;/dt of 1.00 sat a temperature of 180&#xb0; C., where the strain hardening index (SHI) is defined as the slope of the logarithm to the basis 10 of the tensile stress growth function (log(&#x3b7;)) as a function of the logarithm to the basis 10 of the Hencky strain (log(&#x3b5;)) in the range of Hencky strains between 1 and 3.

Polypropylene foam

A modified supported olefin polymerization catalyst modified by prepolymerization with an olefin or an olefin mixture different from the olefin or olefin mixture of the subsequent olefin polymerization. The polymerization catalyst is a metallocene, and the melting or softening point of the polyolefin made using the catalyst is at least 20&#xb0; C. lower than that of the prepolymerized polyolefin.

Modified supported catalysts for the polymerization of olefins

Metallocenes with ferrocenyl-substituted bridges used in olefin polymerization

A process for preparing a catalyst support in which a hydrophilic inorganic oxide of an element of main groups 2, 13 or 14 or transition group 4 of the Periodic Table or a mixture or mixed oxide thereof is dried at from 110 to 800&deg; C., subsequently reacted, if desired, with alumioxanes or aluminum alkyls and subsequently reacted simultaneously with aluminoxanes and bisphenol A as a polyfunctional organic crosslinker. In a further stage, the catalyst support can be brought into contact with a polyolefin catalyst, giving a supported polyolefin catalyst which is used, in particular, for the polymerization of olefins.

Process for preparing catalyst supports and supported polyolefin catalysts and also their use for the preparation of polyolefins

Process for preparing a supported metallocene catalyst, in which a hydrophilic, macroporous, finely divided aluminum oxide, silicon oxide, titanium oxide or zirconium oxide or a mixture or mixed oxide thereof is dried at from 110 to 800.degree. C., then reacted with an aluminoxane and subsequently with polyfunctional organic crosslinkers. In a further step, the catalyst support can be mixed with a reaction product of metallocenes and activators, giving a supported metallocene catalyst which is used, in particular, for the polymerization of olefins.

Catalyst supports metallacene catalysts and their use for the

Metallocenes with silyl-substituted bridges and their use for olefin

A process for preparing a catalyst support in which a hydrophilic inorganic oxide of an element of main groups II to IV or transition group IV of the Periodic Table or a mixture or mixed oxide thereof is dried at from 110 to 800.degree. C., subsequently reacted, if desired, with aluminoxanes or aluminum alkyls and subsequently reacted simultaneously with aluminoxanes and polyfunctional organic crosslinkers. In a further stage, the catalyst support can be brought into contact with a polyolefin catalyst, giving a supported polyolefin catalyst which is used, in particular, for the polymerization of olefins.

Process for preparing catalyst supports and supported polyolefin

Process for preparing a catalyst support, in which a hydrophilic, macroporous, finely divided aluminum oxide, silicon oxide, titanium oxide or zirconium oxide or a mixture or mixed oxide thereof is dried at from 110 to 800.degree. C., then reacted with an aluminoxane and subsequently with polyfunctional organic crosslinkers. In a further step, the catalyst support can be mixed with a reaction product of metallocenes and activators, giving a supported metallocene catalyst which is used, in particular, for the polymerization of olefins.

Growing community of inventors

Unterweitersdorf, Austria

Eberhard Ernst