Patent · US Expired

Preparation of Ziegler-Natta type catalyst systems

US5658840A · kind A · utility

8Cited by

10References

9Claims

0Family size

Assignee

BASF SE

Inventors

Peter Kölle · Bad Dürkheim, DE
Patrik Müller · Gothenburg, SE
Rainer Hemmerich · Havelsee, DE
Erich Kolk · Bad Dürkheim, DE

Key dates

Filing date	Jun 5, 1995
Grant date	Aug 19, 1997
Priority date	—
Expiry date	Jun 5, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F10/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for the preparation of Ziegler-Natta type catalyst systems, containing, as active constituents a) a titanium-containing solid component, which contains in addition to a compound of titanium at least one electron donor compound, and is present in an inert solvent in the form of a suspension, and, as co-catalyst, b) an aluminum compound and c) optionally further electron donor compounds in which, following the preparation of the titanium-containing solid component a), the inert solvent present in the suspension is removed by first filtering the suspension in a first step, and then removing further solvent from the filtered material in a second step by applying a pressure difference at temperatures of not more than 100.degree. C.

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