Patent · US Active

Spherical particles

US7767772B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Michael Grun · Siegburg, DE
Klaus Heyne · Wiesbaden, DE
Claudine Mollenkopf · Frankfurt, DE
Sam Lee · San Fernando, US
Roger Uhrhammer · Aurora, US

Key dates

Filing date	Nov 3, 2004
Grant date	Aug 3, 2010
Priority date	—
Expiry date	Dec 21, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2410/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Spherical particles comprising magnesium alcoholate and having a poured cone height of less than 17 mm are prepared by reacting magnesium, an alcohol or a mixture of various alcohols and a halogen and/or an optionally organic halogen compound with one another at below the boiling point of the alcohols.The spherical particles are employed as a precursor for olefin polymerization catalysts.

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