Basell Polyolefine Gmbh

Mulheim Pipecoatings Gmbh

Heinz Vogt

Shahram Mihan

Gerhardus Meier

Joachim Berthold

Gerd Mannebach

Iakovos Vittorias

Manfred Hecker

Bernd Lothar Marczinke

Fabiana Fantinel

Ulf Schüller

Barbara Gall

Peter Bisson

Michael Olmscheid

Andreas Deckers

Wolfgang Rohde

Martin Lux

Peter Kölle

Dieter Lilge

Rainer Karer

Diana Dotsch

Ulf Schueller

Diana Doetsch

Jennifer Kipke

Ludwig Böhm

Ulrich Schulte

Cees Besems

Diana Dötsch

Hansjörg Nitz

Lenka Richter-Lukesova

Ilka Beuermann

Albert Weber

Johannes-Gerhard Müller

Markus Meierhöfer

Werner Rothhöft

Peter Josef Gronsfeld

Klaus Schmidt

James Stern

Holger Brüning

Klaus Drochner

Uif Schüller

Lakovos Vittorias

Werner Rothhoeft

Ulf SCHÜLLER

Hansjoerg Nitz

Johannes-Gerhard Mueller

Hans-Jörg Nitz

Polyethylene composition with improved balance of impact resistance at low temperatures and Environmental Stress Cracking Resistance (ESCR), particularly suited for producing protective coatings on metal pipes, said composition having the following features:

Polyethylene composition for having high impact and stress cracking resistance

The present disclosure relates to a polyethylene composition of Raised Temperature Resistance, having the following features:

Polyethylene of raised temperature resistance

A novel polyethylene is devised which polyethylene is particularly advantageous for manufacturing rotomoulded articles.

Polyethylene for rotomoulding

Novel polyethylenes having defined molecular weight distribution and LCB structure are devised, for films or moldings.

Polyethylene composition and finished products made thereof

A polyethylene molding composition having a multimodal molecular mass distribution and comprising from 45 to 55% by weight of a low molecular weight ethylene homopolymer A, from 20 to 40% by weight of a high molecular weight copolymer B comprising ethylene and another olefin having from 4 to 8 carbon atoms and from 15 to 30% by weight of an ultrahigh molecular weight ethylene copolymer C can be prepared in the presence of a Ziegler catalyst in a three-stage process and is highly suitable for producing pipes having excellent mechanical properties.

Multimodal polyethylene molding composition for producing pipes having improved mechanical properties

The invention relates to a polyethylene molding composition which has a multimodal molecular mass distribution and comprises a low molecular weight ethylene homopolymer A, a high molecular weight ethylene copolymer B and an ultrahigh molecular weight ethylene copolymer C. The molding composition has a density at a temperature of 23&#xb0; C. in the range from 0.940 to 0.957 g/cm, an MFR (190&#xb0; C./2.16 kg) in the range from 0.5 to 4 dg/min and a viscosity number VNof the mixture of ethylene homopolymer A, copolymer B and ethylene copolymer C, measured in accordance with ISO/R 1191 in decalin at a temperature of 135&#xb0; C., in the range from 150 to 300 cm/g. The invention further relates to the use of such a molding composition for producing injection-molded finished parts, and to finished parts produced by injection molding.

Polyethylene molding composition for producing injection-molded finished parts

A novel adhesive composition suitable for composing multilayered coatings onto large, industrial equipment such as pipeline tubes is devised. The composition is a blend based on a polyethylene which determines the blend's favorable properties, which polyethylene itself can be used further in coating cables and for producing moldings, especially rotomoulded articles.

Adhesive polymer composition

A molding composition is suitable for the production of pipes having improved resistance to thermooxidative degradation when these pipes are in long-term contact with liquids comprising disinfectants having an oxidizing effect. Such molding composition comprises, in addition to thermoplastic polyolefins, a polyoxy compound and/or a polyhydroxy compound as additive in an amount of from 0.01 to 1.0% by weight. In addition, the molding composition can further comprise an unsaturated aliphatic hydrocarbon in an amount of up to 5% by weight. The invention also relates to a process for improving the long-term resistance of water pipes to damage caused by oxidizing disinfectants from the water by use of this molding composition.

Polyolefinic molding composition having improved resistance to thermooxidative degradation and its use for the production of pipes

The invention relates to a polyethylene molding composition which has a multimodal molar mass distribution and is particularly suitable for producing external sheathing of electric or information transmission cables. The molding composition has a density at a temperature of 23&#xb0; C. in the range from 0.94 to 0.95 g/cmand an MFIin the range from 1.2 to 2.1 dg/min. It comprises from 45 to 55% by weight of a low molecular weight ethylene homopolymer A, from 30 to 40% by weight of a high molecular weight copolymer B of ethylene and another olefin having from 4 to 8 carbon atoms and from 10 to 20% by weight of an ultra high molecular weight ethylene copolymer C. The invention also relates to an electric or information transmission cable having an external sheath of the polyethylene molding composition which has a thickness in the range from 0.2 to 3 cm.

Polyethylene molding composition for external sheathing of electric cables

A process for coating the exterior surfaces of a pipeline with a polymer that is cross-linkable under exposure to water, including a) coating the exterior surface of the pipeline with at least one polymer that is cross-linkable under exposure to water, where the employed cross-linkable polymer includes alkoxy silane grafted HDPE; and b) cross-linking of the cross-linkable polymer by exposure to water at elevated temperatures so as to form a cross-linked polymer layer having a degree of cross-linking of from 30% to 80% is reached.

Process for coating exterior surfaces of pipelines with water cross-linkable polymer

The invention relates to a polyethylene molding composition which has a multimodal molar mass distribution and is particularly suitable for producing protective coatings on steel pipes. The molding composition has a density at a temperature of 23&#xb0; C. in the range from 0.94 to 0.95 g/cmand an MFIin the range from 1.2 to 2.1 dg/min. It comprises from 45 to 55% by weight of a low molecular weight ethylene homopolymer A, from 30 to 40% by weight of a high molecular weight copolymer B of ethylene and another olefin having from 4 to 8 carbon atoms and from 10 to 20% by weight of an ultra high molecular weight ethylene copolymer C.

Polyethylene molding composition for coating steel pipes

Plastics pipes comprise polyolefins which can be prepared by means of a fluorine-modified chromium catalyst and are used for transporting gases and liquids.

Plastics pipes of polyolefins

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Frankfurt-am-Main, Germany

Heinz Vogt