Patent · US Active

Heterophasic propylene copolymers with stiffness/impact/flowability balance

US8822602B2 · kind B2 · utility

9Cited by

19References

8Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Pauli Leskinen · Porvoo, FI
Petar Doshev · Linz, AT
Cornelia Kock · Traun, AT

Key dates

Filing date	Nov 8, 2011
Grant date	Sep 2, 2014
Priority date	—
Expiry date	Nov 8, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2314/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Heterophasic propylene copolymer (HECO) comprising: (a) a polypropylene matrix comprising: (a1) a first propylene homopolymer fraction (PPH1) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of >200 to 500 g/10 min, (a2-1) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of >30 to ≦200 g/10 min or, (a2-2) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of >5 to ≦30 g/10 min and, (a3-1) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 0.03 to ≦5 g/10 min, if the second propylene homopolymer fraction is fraction (a2-1) or, (a3-2) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of >30 to ≦200 g/10 min, if the second propylene homopolymer fraction is fraction (a2-2), wherein the polypropylene matrix has a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 30 to 500 g/10 min and a xylene cold soluble fraction determi…

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