Patent · US Active

Heterophasic polypropylene polymer

US9932469B2 · kind B2 · utility

2Cited by

0References

17Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Jingbo Wang · Linz, AT
Petar Doshev · Linz, AT
Luigi Resconi · Milano, IT
Wilfried Töltsch · Wels, AT

Key dates

Filing date	Jan 6, 2015
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Jan 6, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2423/16
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A heterophasic propylene ethylene copolymer having an MFR2 of 0.5 to 100 g/10 m in and obtained using single site catalysis comprising: (i) a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene; and (ii) an ethylene propylene rubber (EPR) dispersed in the matrix; said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 20 to 40%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 70 and 90 wt. %; wherein the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer has an intrinsic viscosity (IV) of 3.0 dl/g or more; and wherein the melting enthalpy (ΔHM) of the heterophasic propylene ethylene copolymer is between 10 and 30 J/g at a temperature of 0 to 130° C.

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