Patent · US Active

High flow and stiff polymer material with good transparency and impact properties

US9732209B2 · kind B2 · utility

0Cited by

0References

15Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Cornelia Kock · Traun, AT
Christelle Grein · Linz, AT
Floran Prades · Linz, AT

Key dates

Filing date	Sep 12, 2011
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Oct 10, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2666/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polypropylene composition having a melt flow rate MFR2 (230° C.) of equal or above 15 g/10 min comprising: (a) a crystalline polypropylene matrix; (b) an elastomeric propylene copolymer phase having a propylene content in the range of 40 to 80 wt.-%, and an intrinsic viscosity in the range of more than 0.7 to less or equal 2.5 dl/g; (c) a first polyethylene having a density in the range 905 to 925 kg/m3 and melt flow rate MFR2 (190° C.) of below 30 g/10 min; (d) a second polyethylene having a density of above 915 kg/m3, and a melt flow rate MFR2 (190° C.) of equal or above 30 g/10 min.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.