Chloropolyethylene, process for the manufacture thereof and its use

US4562224A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Wolfram Busch · Hochheim, DE
• Johannes Brandrup · Wiesbaden, DE
• Dietrich Fleischer · Darmstadt, DE

Key dates

• Filing date: Nov 21, 1983
• Grant date: Dec 31, 1985
• Expiry date: Nov 21, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides finely dispersed, agglomeration-free chloropolyethylene having good rubber and anti-blocking properties. The invention provides furthermore a process for the manufacture of such a chloropolyethylene, according to which chlorination of the starting polyethylene is carried out in the presence of a dispersing agent system of poly-N-vinylprrolidone and hydrophobic silicic acid. This process allows also the use of polyethylene types having a pronounced tendency to agglomeration.