Patent · US Expired

Process for the preparation of a support for catalysts, catalyst for the polymerization of olefins and process for the polymerization of olefins by means of this catalyst

US5834572A · kind A · utility

21Cited by

3References

12Claims

0Family size

Assignee

SOLVAY (Société Anonyme) · BE

Inventors

Helmut Derleth · Nienburg, DE
Benoit Koch · Hannut, BE
Andre Rulmont · Liège, BE
Fabienne Wijzen · Ayeneux, BE

Key dates

Filing date	Feb 2, 1996
Grant date	Nov 10, 1998
Priority date	—
Expiry date	Feb 2, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J35/638
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Process for the manufacture of a support containing silica and at least one constituent chosen from alumina and aluminium phosphate, according to which an alcohol, water, a silicon alkoxide and an acid are mixed under conditions such that gelling or precipitation of silica is prevented, an acidic solution of an aluminium compound and/or a solution of a source of phosphate ions are added thereto, a gelling agent is added thereto, a gel is recovered which is washed with water and then by means of an organic liquid, the gel is then dried by atomization until a powder is obtained, and the powder is calcined. Polymerization of olefins in the presence of a catalyst containing chromium on a support as described above.

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