Patent · US Active

Heterophasic polymer composition of high stiffness

US8568845B2 · kind B2 · utility

2Cited by

1References

32Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Bo Malm · Espoo, FI
Franz Ruemer · Zell am See, AT
Andreas Wolf · Gauting, DE
Tua Sundholm · Mickelsböle, FI

Key dates

Filing date	Jul 7, 2009
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Nov 27, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1397
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a heterophasic polymer composition which comprises (i) a matrix comprising a propylene homopolymer and/or a propylene copolymer having an amount of comonomer units of less than 1.0 wt %, and (ii) an elastomeric polypropylene which is dispersed within the matrix and comprises comonomer units derived from ethylene and/or a C4 to C12 alpha-olefin; and wherein the heterophasic polymer composition has an amorphous fraction AM in an amount of 2.0 to 7.5 wt %, and the amorphous fraction AM has an amount of ethylene- and/or C4 to C12 alpha-olefin-derived comonomer units of 20 to 45 wt %.

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