Borealis Ag

Borealis Technology Oy

Boreaus Ag

Anneli Pakkanen

Magnus Palmlöf

Carl-Gustaf Ek

Jeroen Oderkerk

Mats Bäckman

Andrey Buryak

Tore Dreng

Albrecht Dix

Markku Vahteri

Bill Gustafsson

John Severn

Thomas Steffl

Esa Kokko

Janne Maaranen

Susana Filipe

Christian Piel

Carl-Gustav Ek

Alexander Krajete

Philipp Walter

Lars Hojer

Ayodele Olutayo Fiola

Mats Backman

Tarja-Tuulikki Turpeinen

The present invention relates to a cable comprising a conductor surrounded by one or more layers, wherein at least one layer comprises a polymer composition comprising a copolymer of ethylene with one or more comonomers, to a process for producing the cable and to a polymer composition suitable as a cable layer material.

Method of producing a cable comprising a multimodal ethylene copolymer

A cross-linked polyethylene pipe comprising an ethylene polymer with a density of at least 948 kg/mobtained by polymerization with a single-site catalyst and having a shear thinning index SHIof less than 10; and wherein said pipe has a pressure test at 4.8 MPa and 95&#xb0; C. of at least 500 h and at 12.4 MPa and 20&#xb0; C. of at least 500 h.

Cross-linked polyethylene pipe

An ethylene polymer with a density of less than 955 kg/mobtained by polymerisation with a single-site catalyst and having a shear thinning index SHIof less than 5 wherein ethylene polymer comprises two components.

Cross-linkable polyethylene resin for pipes made by a single-site catalyst

A peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof are described. The pipe is characterized in that it comprises an ethylene polymer with a density of less than 950 kg/mobtained by polymerization with a single-site catalyst and having a shear thinning index, SHIof less than 20 and a MWD of &#x3c;10. The method is characterized in that it comprises polymerizing ethylene, optionally together with at least one comonomer, with a single-site catalyst to provide the above defined ethylene polymer, forming the ethylene polymer into a pipe by extrusion and crosslinking it.

Peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof

A polyethylene moulding composition having a multimodal molecular weight distribution, having a density according to ISO 1183 at 23&#xb0; C. in the range of 920 to 960 kg/mand an MFR190/2 according to ISO 1133 in the range of 0.05 to 10 g/10 min, said polyethylene moulding composition comprising at least three ethylene polymer fractions having distinct molecular weights: A) 15 to 50 wt % of a low molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 15 to 40 kg/mol; B) 15 to 50 wt % of a medium molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 70 to 200 kg/mol; and C) 15 to 50 wt % of a high molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 220 to 400 kg/mol, provided that one of A, B and C is an ethylene homopolymer and at least one other component is an ethylene copolymer with at least one C-Ccomonomer; and wherein the composition has&#x2014;a Shore D hardness measured according to ASTM D2240-05 (15 sec) of at least 56.0.

Moulding composition

The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 924 to 935 kg/m, a melt index MFRof from 0.5 to 6.0 g/10 min, a melt index MFRof from 0.1 to 2.0 g/10 min and a shear thinning index SHIof from 2 to 50. In addition the multimodal copolymer comprises:

Polymer compositions and pressure-resistant pipes made therefrom

The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 924 to 960 kg/m, a melt index MFRof from 0.5 to 6.0 g/10 min, a melt index MFRof from 0.1 to 2.0 g/10 min and a shear thinning index SHIof from 2 to 50. The compositions further have a level of volatile compounds of at most 100 ppm by weight and/or a homogeneity rating of at most 3. In addition the multimodal copolymer comprises:

Polymer compositions having improved homogeneity and odour, a method for making them and pipes made thereof

The present invention deals with polymer compositions suitable for making pipes. The compositions comprise a multimodal copolymer of ethylene and one or more alpha-olefins having from 4 to 10 carbon atoms wherein the multimodal ethylene copolymer has a density of from 937 to 950 kg/m, a melt index MFRof from 0.3 to 3.0 g/10 min, a melt index MFRof from 0.1 to 2.0 g/10 min and a shear thinning index SHIof from 2 to 30. In addition the multimodal copolymer comprises:

High density polymer compositions, a method for their preparation and pressure-resistant pipes made therefrom

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Vasterskog, Finland

Anneli Pakkanen