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US 9,790,300 B2Granted
Propylene copolymer for thin-wall packaging
AssigneeBorealis AG
InventorsJingbo Wang, Johanna Lilja, Markus Gahleitner
Life of this patent
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Abstract
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.
Claims16
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 55.0 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.
26 more elements
Dependencies are inferred from the claim text.