Borealis Ag

Abu Dhabi Polymers Co. Ltd (borouge) Llc.

Abu Dhabi Polymers Company Limited

Dietrich Gloger

Thomas Horill

Gregory Potter

Katja Ellen Klimke

Davide Tranchida

Franciscus Jacobs

Markus Gahleitner

Luigi Resconi

Georg Grestenberger

Claudia Kniesel

Wolfgang Neissl

Martina Sandholzer

Joachim Fiebig

Christelle Grein

Wolfram Stadlbauer

Jingbo Wang

Klaus Bernreitner

Per-Ola Hagstrand

Daniela Mileva

Hermann Braun

Antonios Gitsas

Kauno Alastalo

Torvald Vestberg

Norbert Reichelt

Johan Defoer

Tung Pham

Alexander Reznichenko

Johannes Wolfschwenger

Ann Watson

Tonja Schedenig

Antonis Gitsas

Juha Paavilainen

James Elliott Robinson

Niraj Dixit

Matthew Parkinson

Guido Boelaers

Paul De Mink

Gurusamy Sakkaraiyappan

James Ellis Robinson

Helmut Rinnerthaler

Werner Verwimp

Vijay Francis

Robert Persson

Hans Kerkhofs

Kristof Wehenkel

Gottfried Kandioller

The present invention is directed to a propylene polymer composition comprising (a) at least 90 wt. %, based on the weight of the total propylene homopolymer composition, of a propylene homopolymer having (i) a pentad isotacticity (mmmm) of equal or more than 98.0 mol.-%, determined by quantitativeC NMR spectroscopy, (ii) a relative amount of <2,1> erythro regio-defects of not more than 0.2 mol.-%, determined by quantitativeC NMR spectroscopy, as described herein, and (b) a nucleating agent (B) selective for the beta-modification of isotactic polypropylene in an amount of from 0.001 to 1.0 wt. %, based on the weight of the total propylene homopolymer composition, wherein said propylene homopolymer composition has a melt flow rate MFR(230° C., 2.16 kg) according to ISO 1133 of 0.1 to 10 g/10 min., a beta-phase content of not less than 80%, measured by wide angle x-ray scattering (WAXS). Further disclosed is a moulded propylene homopolymer product obtainable by compression moulding or extrusion of the propylene homopolymer composition.

Nucleated propylene polymer composition with high toughness

The present invention is directed to a biaxially oriented polypropylene (BOPP) film with improved breakdown strength and to a capacitor comprising an insulation film comprising a layer of the biaxially oriented polypropylene film of the present invention. The present invention is further directed to a process for producing a biaxially oriented polypropylene film. Finally, the present invention is further directed to the use of a biaxially oriented polypropylene film of the present invention as layer of an insulation film of a capacitor. The BOPP film comprises a polypropylene composition, wherein the polypropylene composition comprises a high isotactic homopolymer of propylene and a polymeric α-nucleating agent. The BOPP film has a dielectric breakdown field strength Eb63.2 of at least 595 kV/mm. The process for producing a biaxially oriented polypropylene film comprises the steps of extruding a polypropylene composition to a flat film and orienting the flat film simultaneously in the machine direction and in the transverse direction.

Biaxially oriented polypropylene film with improved breakdown strength

The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95% to 98%, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of &#x2264;0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of &#x2264;0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity as well as the use of the homopolymer of propylene for increasing the life time of a capacitor.

Polypropylene film structure having increased life time

The present invention is biaxially oriented film comprising a layer comprising a propylene polymer composition comprising a high isotactic homopolymer of propylene and a polymeric &#x3b1;-nucleating agent. The composition may also comprise other propylene polymers.

Biaxially oriented films made of propylene polymer compositions

The present invention is directed to a new cable having at least one insulation layer, to a process for producing such cable as well as to the use of a soluble a-nucleating agent (NA) for increasing the crystallization temperature of a polymer composition (PC) being part of an insulation layer of such a cable and the use of such a cable as communication cable and/or electrical cable.

Insulation layer for cables

The invention relates to long-chain branched polypropylene composition (b-PPC) comprising at least one long-chain branched propylene homopolymer or copolymer (b-PP) and at least one linear propylene homopolymer or copolymer (l-PP). The long-chain branched polypropylene composition (b-PPC) being suitable for foam application.

Long-branched polypropylene composition with increased melt strength stability

The present invention is directed to a polypropylene composition (C), an article comprising the polypropylene composition (C) and the use of the polypropylene composition (C) to reduce paintability failure of a molded article. The polypropylene composition (C) comprises (a) 40.0 to 80.0 wt. %, based on the total weight of the composition, of a propylene copolymer (R-PP) having: (a1) a comonomer content in the range of 1.5 to 8.0 wt. %, and (a2) a melt flow rate MFR(230 &#xb0; C.) measured according to ISO 1133 in the range of 5.0 to 100.0 g/10 min, and (b) 20.0 to 40.0 wt. %, based on the total weight of the composition, of a mineral filler (F) being selected from the group consisting of talcum, wollastonite, kaolin, and mica, wherein the polypropylene composition (C) has a melt flow rate MFR(230 &#xb0; C.) measured according to ISO 1133 in the range of 5.0 to 45.0 g/10 min.

Polypropylene composition suitable for primerless painting

Polypropylene copolymer for biaxially oriented polypropylene (BOPP) with low isotacticity, high melting temperature and low comonomer content.

Polymer composition with high XS, high Tm suitable for BOPP processing

The present invention is directed to a polypropylene composition, an article comprising the polypropylene composition as well as the use of the polypropylene composition to enhance paint adhesion of a molded article.

Polypropylene composition with excellent paint adhesion

The present invention relates to a new biaxially oriented polypropylene (BOPP) film, a process for the preparation of such film as well as the use of a polypropylene for the preparation of such film and an article comprising such film.

BOPP film having low shrinkage

The present invention is directed to a polypropylene composition (C), an article comprising the polypropylene composition (C) as well as the use of the polypropylene composition (C) to reduce paintability failure of a molded article.

Stiff polypropylene composition suitable for primerless painting

BOPP film with improved stiffness/toughness balance

Polypropylene composition comprising a polypropylene and an &#x3b1;-nucleating agent, wherein the polypropylene composition has &#x2022; a comonomer content of equal or below 1.0 wt.- %, &#x2022;&#x3c;2,1&#x3e; erythro regiodefects of more than 0.1 mol.- %, and &#x2022; at least 9.0 wt- % of a crystalline fraction crystallizing in the temperature range of above 160 to 170&#xb0; C., wherein said fraction is determined by the stepwise isothermal segregation technique (SIST).

BOPP film with high AC breakdown strength

A process for the preparation of a polypropylene in a sequential polymerization process including a pre-polymerization reactor and at least two polymerization reactors connected in series. The polymerization in the at least two polymerization reactors takes place in the presence of a Ziegler-Natta catalyst. The Ziegler-Natta catalyst includes (a) a pro-catalyst that has a compound of a transition metal, a compound of a metal which metal is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and an internal electron donor, (b) a co-catalyst, and (c) an external donor. The Ziegler-Natta catalyst is present in the pre-polymerization reactor. Ethylene and propylene are fed to the pre-polymerization reactor in a feed rate ratio of 0.5 to 10.0 g/kg.

Process for the preparation of polypropylene with improved productivity

High isotactic PP resin with wide melting distribution having improved BOPP film properties and easy processing characteristics

Growing community of inventors

Linz, Austria

Dietrich Gloger