PIPES MADE FROM A POLYETHYLENE COPOLYMER WITH SLOW CRACK GROWTH

The present invention relates to a pipe consisting of a polyethylene composition which comprises - a base resin, comprising ¢ a first ethylene homo- or copolymer (A): and ¢ a second ethylene copolymer (B); and the polyethylene composition further comprises - a phenol-type stabilizer (C); and - a p...

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Bibliographische Detailangaben
1. Verfasser:	BACKMAN MATS
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS 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
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Beschreibung
Zusammenfassung:	The present invention relates to a pipe consisting of a polyethylene composition which comprises - a base resin, comprising ¢ a first ethylene homo- or copolymer (A): and ¢ a second ethylene copolymer (B); and the polyethylene composition further comprises - a phenol-type stabilizer (C); and - a phenol-type stabilizer (D); whereby stabilizers (C) and (D) are different. The present invention is furthermore directed to the use of - a phenol-type stabilizer (C); and - a phenol-type stabilizer (D); whereby stabilizers (C) and (D) are different and, optionally, - a further stabilizer (E) selected from phosphorous containing stabilizer (E1); sulphur containing stabilizers (E2); nitrogen containing stabilizers (E3); and/or mixtures thereof; for increasing the slow crack growth resistance of pipes.