USE OF A SOOT CONCENTRATE BASED ON AN ETHYLENE COPOLYMER FOR THE MANUFACTURE OF SHAPED POLYETHYLENE BODIES FOR TUBES

The use of a homogeneous mixture comprising from 70 to 95% by weight of high-pressure polyethylene and from 5 to 30% by weight of a carbon black concentrate which itself comprises from 50 to 95% by weight of an ethylene copolymer with copolymerised monoethylenically unsaturated carboxylic acid ester...

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Bibliographische Detailangaben
Hauptverfasser:	UNKRUEER, WOLFGANG, BOETTCHER, KLAUS, LUIG, FRANZ JOSEF, ZACHER, WIELAND
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL PROCESSES OF COMPOUNDING HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WEAPONS WORKING-UP
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Beschreibung
Zusammenfassung:	The use of a homogeneous mixture comprising from 70 to 95% by weight of high-pressure polyethylene and from 5 to 30% by weight of a carbon black concentrate which itself comprises from 50 to 95% by weight of an ethylene copolymer with copolymerised monoethylenically unsaturated carboxylic acid esters, such as an ethylene-vinyl acetate copolymer, and from 5 to 50% by weight of carbon black having a particle size of from 5 to 70 mu m, for the production of tubes. The carbon black concentrate may be stabilised in the conventional manner. The advantages achieved by means of the invention are, in particular, that the tubes produced from the mixture have a creep rupture strength which is from three to six times higher than that for tubes produced from moulding compounds coloured using carbon black concentrates comprising polyethylene and carbon black.