Borealis Ag

Borealis Technology Oy

Degussa Aktiengesellschaft

Borealis A/s

Xylophane Ab

Seelution Ab

Thomas Hjertberg

Villgot Englund

Bernt-Ake Sultan

Martin Anker

Bjorn Voigt

Annika Smedberg

Perry Nylander

Kristian Dahlen

Kjell Fossum

Auli Nummila-Pakarinen

Per-Ola Hagstrand

Ola Fagrell

Martina Sandholzer

Markku Vahteri

Jeroen Oderkerk

Mattias Bergqvist

Yi Liu

Roger Carlsson

Joseph Thorman

Ravindra Tupe

Bill Gustafsson

Victor Sumerin

Floran Prades

Francis Costa

Thomas Gkourmpis

Alexandra Romina Albunia

Tanja Piel

Dusan Jeremic

Jani Aho

John Jamieson

Jarmo Kela

Anh Tuan Tran

Lena Lindbom

Oscar Prieto

Davide Tranchida

Qizheng Dou

Udo Jegelka

Takashi Uematsu

Udo Wahner

Anna Hjärtfors

Gabriel Ruess

Lars Lindgren

Bjoern Voigt

Johan Andersson

Bernt-Åke Sultan

Kenneth Johansson

Jochen Kirchhoff

Emil Hjärtfors

Åsa Hermansson

Björn Voigt

Mats Andersson

Kurt Stubenrauch

Ulf Gedde

Maria Gröndahl

Paul Gatenholm

Roger Karlsson

Johan Linner

Susanne Nilsson

Marcus Kierkegaard

Torbjorn Magnusson

Helmut Feichtner

Susanne M Nilsson

Lisa Bindgard

Patrik Alnegren

Kristian DAHLÉN

Torbjörn Magnusson

Thomas Steffl

Jenny-Ann ÖStlund

Kristian DAHLÈN

ÅSa Hermansson

Gizheng Dou

Jan Roger Karlsson

The invention relates to a polyethylene having a melt flow rate at (2.16) kg loading (MFR), determined according to method ISO1133-1:2011, which MFRis A g/10 min and A&#x2264;A&#x2264;A; wherein Ais (0.5) and Ais (1.70), and containing a total amount of vinyl groups which is B vinyl groups per (1000) carbon atoms, and B&#x2264;B, wherein Bis (0.45), determined according to method ASTM D6248-98, a polymer composition, an article being e.g. a cable, e.g. a power cable, and processes for producing a polyethylene, a polymer composition and an article, and an article; useful in different end applications, such as wire and cable (W&C) applications.

Polyethylene with a high vinyl content and with a low MFR

The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt % of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970 kg/m3, and dissipation factor measured at 1.9 GHz of 50-80&#x2212;10. The invention further relates to a process for making such a foamable ethylene polymer composition, and use of the foamable ethylene polymer composition in a foamed cable insulation.

Foamable ethylene polymer

A process of making a cable having a conductor surrounded by at least one crosslinkable layer having a polymer composition. The polymer composition has (a) a polyolefin bearing hydrolysable silane groups and a silanol condensation catalyst compound.

Cable comprising a silane crosslinkable polymer composition

A crosslinked polymer composition based on a plastomer, which is suitable for producing at least one layer of cable accessories like cable joints, bushings or terminations; its use for preparing such a layer and the cable accessory comprising the composition.

Crosslinked polymer composition for cable accessories

A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerisation process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerising ethylene together with the silane groups containing comonomer in a polymerisation zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The copolymer of ethylene with silane groups containing comonomer can be used.

High pressure radial polymerisation process for a copolymer of ethylene silane groups containing comonomer

The present invention relates to low density polyethylene having a melt flow rate (MFR) according to ISO 1133 (190&#xb0; C., 2.16 kg) which is higher than 4.0 g/10 min, a storage modulus G', measured at a loss modulus G&#x2033; of 5 kPa, which is above 3000 Pa and a vinylidene content which is at least 24/100 k C, compositions, a process for production of the low density polyethylene, a low density polyethylene which is obtainable by the process, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process or an extrusion lamination process, an article, e.g. an extrusion article, an extrusion lamination article, film blowing article, film casting article, wire and cable extrusion article, injection moulding article, blow moulding article or pipe extrusion article, and uses of the low density polyethylene.

Ethylene polymers for extrusion coating

A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerization process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerizing ethylene together with the silane groups containing comonomer in a polymerization zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The co-polymer of ethylene with silane groups containing comonomer can be used.

The present invention relates to a low density polyethylene having a molecular weight distribution Mw/Mn which is 15 or less, a storage modulus G', measured at a loss modulus G&#x2033; of 5 kPa, which is above 3000 Pa, a weight average molecular weight (Mw) which is between 192000 and 250000 g/mol and has a melt flow rate (MFR) according to ISO 1133 (190&#xb0; C., 2.16 kg) which is higher than 3.0 g/10 min, compositions, a process for production of the low density polyethylene, a low density polyethylene which is obtainable by the process, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process or a method for an extrusion lamination process, an article, e.g. an extrusion article, an extrusion lamination article, film blowing article, film casting article, wire and cable extrusion article, injection molding article, blow molding article or pipe extrusion article, and uses of the low density polyethylene.

Low density polyethylene for extrusion coating

A process for polymerizing ethylene in the presence of a polymerization catalyst by copolymerizing ethylene with a comonomer selected from the group of C4-C10 alpha-olefins in three polymerization stages. The polymers produced in the three stages have different melt flow rates. The polymer composition produced by the process has good mechanical properties and can be used for making pipes. The process has a good productivity and provides a stable and economic operation.

Multistage process for producing polyethylene compositions

Disentangled high or ultrahigh molecular weight polyethylene ((U)HMWPE) being produced with a Ziegler-Natta catalyst, characterized by (i) a factor for the normalized elastic modulus G'/G&#x2032;of less than 0.95 determined in a dynamic time sweep measurement at 180&#xb0; C. with constant strain of 0.5% at fixed frequency of 10 rad/s for at least 3600 s, whereby G&#x2032;is the elastic shear modulus measured at tdirectly after melting the sample and G&#x2032;is the maximum plateau modulus.

Disentangled high or ultrahigh molecular weight polyethylene prepared with Ziegler-Natta catalyst

The present invention relates to a low density polyethylene having a molecular weight distribution Mw/Mn which is greater than 15, a storage modulus G' (5 kPa) which is above 3000 and a vinylidene content which is at least 15/100 k C, compositions, a process for production of the low density polyethylene, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process, an article, e.g. an extrusion article, and use in extrusion coating.

Polyethylene

The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal, characterized in that a polyunsaturated olefin grade is used as a starting material which yields a percentage of less than 6.3% in the zero conversion test or which has a decomposition temperature as measured by DSC of 130&#xb0; C. or more.

High-pressure radial ethylene polymerization process in which ethylene is polymerized with a specific polyunsaturated olefin grade

The invention relates to a polymer composition comprising a polyolefin (A) and an antioxidant. The antioxidant can be selected from a phenol which bears two substituents both containing a sulfur atom and optionally further substituent(s). The polymer composition can comprise vinyl groups/1000 carbon atoms in an amount of 0.15/1000 carbon atoms or more. The polymer composition can have improved water tree resistance properties.

Polymer composition

This application relates to a polyolefin composition comprising a polyolefin and an aromatic compound. The polyolefin composition can be used in producing medium and high voltage cables with improved electrical breakdown strength.

Polyolefin composition for medium/high/extra high voltage cables with improved electrical breakdown strength

The present invention provides a process for manufacturing polyethylene-diene-copolymer conducted in a plant including at least one compressor unit, at least one preheater unit downstream of the compressor unit and at least one reactor, in particular a reactor, downstream of the compressor unit and the preheater unit. The process comprising the steps of (a) feeding a first feed stream comprising ethylene into the at least one compressor unit and subsequently into the at least one preheater unit, and (b1) feeding a second feed stream including at least one diene comonomer to the first feed stream leaving the at least preheater unit, and feeding the combined feed streams including ethylene and the at least one diene comonomer to the at least one reactor, and/or (b2) feeding a second feed stream including at least one diene comonomer to the at least one reactor at at least one location along the reactor.

Process and plant for manufacturing polyethylene-diene-copolymers

Growing community of inventors

Kungshamn, Sweden

Thomas Hjertberg