Preparation of emulsifiable polyethylene by oxidizing polyethylene in a fluidized bed reactor

US4459388A · kind A · utility

Assignee

• BASF SE

Inventors

• Albert Hettche · Heßheim, DE
• Stefan Weiss · Trostberg, DE
• Peter Miederer · Haßloch, DE
• Lutz Goethlich · Schifferstadt, DE
• Juergen Ciprian · Ludwigshafen, DE

Key dates

• Filing date: Feb 19, 1982
• Grant date: Jul 10, 1984
• Expiry date: Feb 19, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/062
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of water-emulsifiable polyethylene by oxidizing high density polyethylene, at below the softening point of the polyethylene, in the presence of oxygen, wherein the oxidation is carried out in a fluidized bed reactor, using a polyethylene which beforehand has been heated, with exclusion of oxygen, in the presence of a compound which forms free radicals.