Highly active catalysts for olefin polymerization and a polymerization process using these catalysts

US5629255A · kind A · utility

Assignee

• PCD Polymere Gesellschaft m.b.H. · AT

Inventors

• Norbert Hafner · Linz, AT
• Wilfried T oltsch · Wels, AT
• Hans Ledwinka · Braunau am Inn, AT
• Wolfgang Neissl · Lichtenberg, AT

Key dates

• Filing date: Sep 21, 1995
• Grant date: May 13, 1997
• Expiry date: Sep 21, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/65916
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Highly active catalysts, for olefin polymerization, from tetraneophylzirconium and partly hydroxylated metal oxides from group IIa, IIIa, IVa or IVb of the Periodic Table, which are essentially free from by-products.