The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFI.sub.sf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFL.sub.end) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.

The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFI.sub.sf of the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFL.sub.end) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.

A structured body including: a formed body, the surface of which being formed of an underlying resin layer (1); and fine particles distributed on the underlying resin layer (1) on the surface of the formed body, wherein the structured body is characterized in that wax (3) is distributed on the surface of the underlying resin layer (1) together with fine particles (7), and the wax (3) is partly absorbed into the underlying resin layer (1).

A structured body including: a formed body, the surface of which being formed of an underlying resin layer (1); and fine particles distributed on the underlying resin layer (1) on the surface of the formed body, wherein the structured body is characterized in that wax (3) is distributed on the surface of the underlying resin layer (1) together with fine particles (7), and the wax (3) is partly absorbed into the underlying resin layer (1).

Cross-linkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, an optional cross-linking coagent, and an antioxidant. Such cross-linkable polymeric compositions are prepared by imbibing at least a portion of the organic peroxide, the optional cross-linking coagent, and the antioxidant into the ethylene-based polymer. Such cross-linkable polymeric compositions can be employed in forming coated conductors.

Cross-linkable polymeric compositions comprising an ethylene-based polymer, an organic peroxide, an optional cross-linking coagent, and an antioxidant. Such cross-linkable polymeric compositions are prepared by imbibing at least a portion of the organic peroxide, the optional cross-linking coagent, and the antioxidant into the ethylene-based polymer. Such cross-linkable polymeric compositions can be employed in forming coated conductors.

Disclosed are polymeric compositions with improved breakdown strength. The polymeric compositions contain a polyolefin and a voltage stabilizing agent, which is selected from one or more of a group of three specific triazine compounds. The present polymeric compositions exhibit improved breakdown strength when applied as an insulating layer for power cable.

Disclosed are polymeric compositions with improved breakdown strength. The polymeric compositions contain a polyolefin and a voltage stabilizing agent, which is selected from one or more of a group of three specific triazine compounds. The present polymeric compositions exhibit improved breakdown strength when applied as an insulating layer for power cable.

This invention, in embodiments, relates to non-asphaltic coatings for roofing materials, to roofing materials made therefrom and to methods of preparing such coatings and roofing materials. By blending thermoplastic polymers with appropriate fillers and/or recycled materials, a composition is produced that can be pressed into a desired shape, or that can be additionally mixed with oils, resins and/or waxes to provide a liquid that can be poured onto an appropriate substrate.

This invention, in embodiments, relates to non-asphaltic coatings for roofing materials, to roofing materials made therefrom and to methods of preparing such coatings and roofing materials. By blending thermoplastic polymers with appropriate fillers and/or recycled materials, a composition is produced that can be pressed into a desired shape, or that can be additionally mixed with oils, resins and/or waxes to provide a liquid that can be poured onto an appropriate substrate.