Pipe systems made from random copolymers of propylene and α-olefins

410 MMPipe systems having at least one layer comprising a semi-crystalline random polymer of propylene and 0.2 to 5 wt % 1-hexen and optionally a recurring unit selected from ethylene and a C-Cα-olefin in an amount from more than 0 to 9% by moles. The polymer exhibits broad molecular weight distribu...

Full description

Saved in:
Bibliographic Details
Main Authors De Palo, Roberto, Beccarini, Enrico, Marzolla, Roberta
Format Patent
LanguageEnglish
Published 13.09.2011
Online AccessGet full text

Cover

More Information
Summary:410 MMPipe systems having at least one layer comprising a semi-crystalline random polymer of propylene and 0.2 to 5 wt % 1-hexen and optionally a recurring unit selected from ethylene and a C-Cα-olefin in an amount from more than 0 to 9% by moles. The polymer exhibits broad molecular weight distribution, in terms of the ratio of weight average molecular weight to numeric average molecular weight formula (I), ranging from 5 to 11, molecular weight distribution of monomodal type and hexen-1 content in the fraction with an intrinsic viscosity of equal to or higher than 3.3 dl/g lower than the hexen-1 content in the fraction with an intrinsic viscosity of less than 3.3 dl/g. ( w/ n)   (I)