PROPYLENE COPOLYMER FOR THIN-WALL PACKAGING

摘要

Propylene copolymer having a comonomer content in the range of 2.0 to 11.0 mol.-% and a melt flow rate MFR2 (230° C.) in the range of 25.0 to 100 g/10 min, wherein said propylene copolymer is featured by good toughness.

主权项

1. Propylene copolymer (R-PP) having:
(a) a comonomer content in the range of 2.0 to 11.0 mol. %; (b) a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 25.0 to 100 g/10 min; and (c) a relative content of isolated to block ethylene sequences (I(E)) in the range of 45.0 to 70.0%, wherein the I(E) content is defined by equation (I):I(E)=fPEP(fEEE+fPEE+fPEP)×100(I) wherein: I(E) is the relative content of isolated to block ethylene sequences [in %]; fPEP is the mol fraction of propylene/ethylene/propylene sequences (PEP) in the sample; fPEE is the mol fraction of propylene/ethylene/ethylene sequences (PEE) and of ethylene/ethylene/propylene sequences (EEP) in the sample; fEEE is the mol fraction of ethylene/ethylene/ethylene sequences (EEE) in the sample wherein all sequence concentrations being based on a statistical triad analysis of 13C-NMR data.