Patent ID: 11904580
Assignee: BOREALIS AG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 4:
5. The multilayer blown film according to claim 4, wherein the propylene-ethylene random copolymer consists of:
45.0 to 85.0 wt. % of polymer fraction (PRC-1) having,
(i) an ethylene content in the range of from 1.5 to 5.0 wt. % and
(ii) a melt flow rate MFR2 (230° C/2.16 kg) measured according to ISO 1133 in the range of from 0.8 to 8.0 g/10 min and
15.0 to 55.0 wt. % of polymer fraction (PRC-2) having,
(i) an ethylene content in the range of from 4.0 to 10.0 wt. % and
(ii) a melt flow rate MFR2 (230° C/2.16 kg) measured according to ISO 1133 in the range of from 0.1 to 3.0 g/10 min,
whereby the melt flow rate MFR2 (230° C./2.16 kg) of polymer fraction (PRC-2) is lower than the MFR2 (230° C./2.16 kg) of polymer fraction (PRC-1).