Patent · US Active

Process for the manufacture of isotactic polypropylene

US9102770B2 · kind B2 · utility

1Cited by

4References

14Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Evi De Smet · Oud-Heverlee, BE
Lodewijk Hendrickx · Meerhout, BE
Werner Verwimp · Tessenderlo, BE
Marc Verheijen · Geel, BE
Paul Allemeersch · Tessenderlo, BE
Erwin Vanzeir · Kapellen, BE
Francisus Jacobs · Evergem, BE
Yvo Daniels · Zonhoven, BE
Kristof Storms · Stekene, BE

Key dates

Filing date	Jul 5, 2012
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Jul 5, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Slurry polymerization process for the preparation of a polypropylene (PP) having a decaline soluble fraction (DS) of equal or below 2.5 wt.-%, wherein (a) a Ziegler-Natta catalyst (ZN), (b) propylene and optionally ethylene and/or an C4 to C12 α-olefin, and (c) a diluent (D) comprising a donor agent (DA), are fed into a first reactor vessel (R1) and the polymerization of said polypropylene (PP) takes place in at least said first reactor (R1).

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