Patent ID: 8030426

Claim:
A polypropylene resin comprising a propylene polymer, the propylene polymer comprising: a distribution of molecular weight Mw/Mn lower than 43; a melt-viscosity measured at a temperature of 250° C. in a shear rate ranging from 1000 1/s to 40000 1/s, and the melt-viscosity satisfies the following relationship: h≦ 9* e (−0.00006* sr )+2 wherein h is the melt-viscosity in Pas; and sr is the shear rate in 1/s; isotactic pentads (mmmm) measured with 13 C-NMR are higher than 90%; a hexane extractables according FDA regulations are below 2.6 wt. %; and xylene solubles are below 2 wt. %; with the proviso that the propylene polymer was not visbroken.