Patent ID: 9676883
Date: 2017-06-13
CPC Classifications: C08F

Claim:
1. A propylene-ethylene copolymer comprising: an ethylene content of 0.1 to less than 10% by weight; a molecular weight distribution (MWD), expressed in terms of Mw/Mn, of greater than 3; a melt flow rate (MFR 230° C. 2.16 kg) for the reactor grade copolymers of 0.5-45 g/10 min; an absence of 2,1 propylene insertions; a xylene soluble fraction (XS) content and an ethylene content (C2) defined by values that fall below the line given by the equation: where: XS=% by weight of the fraction soluble in xylene at 25° C.; and C2=% by weight of ethylene units in the copolymer determined via NMR.