公开(公告)号：EP1042629B1

公开(公告)日：2002-11-13

申请号：EP98966683.9

申请日：1998-12-29

申请人： Borealis GmbH

发明人： EBNER, Karl ,  KONRAD, Roland ,  SCHIESSER, Stefan ,  BERNREITNER, Klaus

IPC分类号： F16L9/127

CPC分类号： F16L9/127 ,  C08F297/083

公开(公告)号：EP1042629A1

公开(公告)日：2000-10-11

申请号：EP98966683.9

申请日：1998-12-29

申请人： Borealis GmbH

发明人： EBNER, Karl ,  KONRAD, Roland ,  SCHIESSER, Stefan ,  BERNREITNER, Klaus

IPC分类号： F16L9/127

CPC分类号： F16L9/127 ,  C08F297/083

摘要： The invention relates to a high resistance polypropylene tube, especially with a high modulus of elasticity in extension, high impact strength, annular rigidity and resistance towards knocks. The inventive tube is made of polypropylene and has a modulus of elasticity in extension of 1300-2300 N/mm2 and an impact strength of 60-110 kJ/m2. The inventive tube is produced by extrusion of a plastic moulding material consisting of two constituents A and B of composition A) 80-98 mass parts of an isotactic polypropylene homopolymer as a coherent matrix constituent with a decade regularity of ⊃ 95 % and B) 2-20 mass parts of a copolymer, consisting of 50-70 mass parts of propylene and 30-50 mass parts of ethylene and/or other C4-C8-α-olefins as a dispersedly distributed elastomer component. The intrinsic viscosity ratio of both components B/A is 0.9-1.5 and the melt flow index of the moulding material is 0.15-0.8 g/10 min. The polypropylene tubes are suitable for use in waste water systems, especially as gully pipes, rainwater pipes, domestic drainpipes, or sound insulation pipes or shaft elements.