Patent · US Active

In-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene and a metallocene catalysed polypropylene

US9765209B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Saeid Kheirandish · Neuss, DE
Petar Doshev · Linz, AT
Pauli Leskinen · Porvoo, FI
Bo Malm · Espoo, FI

Key dates

Filing date	May 21, 2012
Grant date	Sep 19, 2017
Priority date	—
Expiry date	Nov 1, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Propylene homo- or copolymer composition comprising an in-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene (znPP) and a metallocene catalysed polypropylene (mcPP), in a weight ratio in the range of 6:94 to 50:50 (wt % znPP:wt % mcPP), preferably in the range of 10:90 to 44:56 (wt % znPP:wt % mcPP), having an excellent balance between optical properties, mechanical properties, thermal properties and processing properties; a process for its production and the use of a mixture of a Ziegler-Natta catalyst system and a metallocene catalyst system.

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