Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.5 g/10 min; and (iv) the polyethylene composition has an SHI(2.7/210) of 10 to 49. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

Abstract: A polymer composition with improved DC electrical properties and a cable surrounded by at least one layer comprising the polymer composition are provided.

Abstract: The present invention deals with the use of pipes made of cross-linked polyethylene for transporting water containing chlorine dioxide. Cross-linked polyethylene has a resistance of more than 3500 hours against water treated with chlorine dioxide when tested according to a modified method of ASTM F2263-03. Especially, the pipes made of cross-linked polyethylene can be used for transporting drinking water which had been disinfected by using chlorine dioxide.

Abstract: The present invention relates to a polyolefin composition with increased resistance to degradation caused by ClO2-containing water and to a pipe made of such a polyolefin composition. The present invention further relates to the use of the polyolefin composition for the production of a pipe and to the use of a combination of particular types of antioxidants for increasing the resistance of the polyolefin composition against degradation caused by contact with ClO2-containing water.

Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress ?2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

Abstract: The present invention relates to a polyolefin composition with good resistance to degradation caused by chlorine dioxide-containing water and at the same time showing low migration of the used additives and its decomposition products, especially phenols, out of the composition. The present invention is also directed to a pipe made of such a polyolefin composition. The present invention further relates to the use of the polyolefin composition for the production of a pipe and to the use of a combination of particular types of antioxidants for increasing the resistance of a polyolefin composition against degradation caused by contact with chlorine dioxide-containing water and for maintaining at the same time a low migration of the used additives and its decomposition products, especially phenols, out of the polyolefin composition.

Abstract: The present invention relates to a cross-linked polyolefin composition reinforced with a filler with improved stiffness, impact strength, pressure resistance and impact/stiffness balance as well as to the use of such a polyolefin composition for the preparation of pipes. The polyolefin composition comprises a base resin comprising a cross-linkable olefin homo- or copolymer (A) and a filler (B), wherein the polyolefin composition has been subjected to cross-linking conditions, e.g. silane-cross-linking or peroxide cross-linking.

Abstract: The present invention relates to a polyethylene composition comprising a polyethylene base resin, which comprises a. an ethylene copolymer as fraction (A), and b. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerisation process in which a single-site catalyst. (SSC) is used in the polymerisation of at least one of fractions (A) and (B), and the base resin has (i) a density of below 940 kg/m3, and (ii) a MFR2 at 190 ° C./2.16 kg of 0.001 to 10 g/10 min, and the composition has (iii) a flexural modulus of from 300 to 820 MPa, and to a process for the production of such a composition, and to a pipe produced from such a composition.

Abstract: The present invention relates to a polyolefin composition comprising: a) an olefin homo- or copolymer (A), and b) activated carbon (B) as a taste and/or odour reducing agent, to the use of such a polyolefin composition, and to a pipe material and pipe having reduced taste and/or odour development comprising the above polyolefin composition.

Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.5 g/10 min; and (iv) the polyethylene composition has an SHI(2.7/210) of 10 to 49. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

Abstract: The present invention relates to a polyethylene composition comprising a polyethylene base resin, which comprises a. an ethylene copolymer as fraction (A), and b. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerisation process in which a single-site catalyst. (SSC) is used in the polymerisation of at least one of fractions (A) and (B), and the base resin has (i) a density of below 940 kg/m3, and (ii) a MFR2 at 190 ° C./2.16 kg of 0.001 to 10 g/10 min, and the composition has (iii) a flexural modulus of from 300 to 820 MPa, and to a process for the production of such a composition, and to a pipe produced from such a composition.

Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress ?2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

Abstract: The present invention relates to a polyolefin composition comprising a polyolefin base resin and an antioxidant, characterized in that said polyolefin composition has a lifetime of at least 200 h in a test measuring the resistance against ClO2-containing water at 90° C., and at a concentration of ClO2 of 4 ppm wherein the equipment used is according to ASTM F2263-03. The present invention further relates to a pipe comprising the polyolefin composition according to the invention, to the use of the polyolefin composition for the production of a pipe, and to the use of a particularly selected antioxidant for increasing the resistance of a polyolefin composition against degradation caused by contact with ClO2-containing water.

Abstract: The present invention relates to a foamed polypropylene composition comprising a propylene homo- and/or copolymer and glass fibres, wherein (i) the composition has a density of 50 to 950 kg/m3, (ii) the tensile modulus tm(extrusion direction) measured according to ISO 527 in extrusion direction and the k-value measured according to ASTM C-518 satisfy the relation: tm(extrusion direction) [MPa]/k [W/mK]?9000 MPa·mK/W, to the use of said composition for the production of an insulating layer and to an article comprising said composition.

Abstract: The present invention relates to a polyolefin composition comprising a crosslinkable polyolefin with hydrolysable silane groups and a silanol condensation catalyst, and (A) a compound containing one or more POm(OnR)(OoR)(OpR?) groups, wherein R, R?, and R? are the same or different organic residues; m is 0 or 1; n, o, and p each are 0 or 1; and n+o+p=1 to 3; a master batch for a crosslinkable polyolefin composition comprising a polymer and a silanol condensation catalyst and component (A), a stabilized polyolefin containing cross-linked silane groups wherein cross-linking has been performed by the use of a silanol condensation catalyst, further comprising component (A), and to the use of component (A) for stabilizing a polyolefin composition comprising a crosslinkable polyolefin with hydrolysable silane groups and a silanol condensation catalyst. The polyolefin composition of the invention can be used for pipe, wire & cable, film, fibre and moulding applications.