Preparation of ethylene polymers using a Ziegler catalyst system, and ethylene polymers prepared in this manner and having less odor

US5039765A · kind A · utility

Assignee

• BASF SE

Inventors

• Roland Saive · Ludwigshafen, DE
• Guido Funk · Worms, DE
• Juergen Schmidt-Thuemmes · Schifferstadt, DE
• Rainer Konrad · Putlitz, DE
• Peter Bauer · Ludwigshafen, DE

Key dates

• Filing date: Oct 31, 1989
• Grant date: Aug 13, 1991
• Expiry date: Oct 31, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

High density ethylene polymers are prepared by polymerizing the monomers in the presence of a Ziegler catalyst system by a process in which the resulting solid ethylene polymer is reacted in the melt with an additive capable of binding acids by esterification. The ester-forming additives are preferably epoxide compounds.