Patent · US Expired

Catalyst component comprising magnesium, titanium, a halogen and an electron donor, its preparation and use

US6706655B2 · kind B2 · utility

1Cited by

2References

53Claims

0Family size

Assignee

Borealis Technology Oy · FI

Inventors

Thomas Garoff · Helsinki, FI
Timo Leinonen · Tolkkinen, FI
Sirpa Ala-Huikku · Helsinki, FI

Key dates

Filing date	Feb 1, 2001
Grant date	Mar 16, 2004
Priority date	—
Expiry date	Dec 4, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/6548
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a new process for the preparation of an olefin polymerization catalyst component, as well as a new polymerization catalyst component and its use. In the process, a magnesium dialkyl or diahlide or alkyl alkoxide is reacted with an alcohol and the reaction product is reacted with an unsaturated dicarboxylic acid dihalide and a titanium tetrahalide. Especially good catalyst activity and morphology are achieved by using a polyhydric alcohol such as ethylene glycol.

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