Process for preparation of chlorinated and chlorosulfonated olefin

USH1582H · kind H · statutory invention registration

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Christopher J. Bish · Kennett Square, US
• Edward G. Brugel · Wilmington, US
• Royce E. Ennis · Silsbee, US
• Jerry W. Soape · Bascadet, FR

Key dates

• Grant date: Aug 6, 1996

Classification

• Technology area (CPC —): General

Abstract

Non-discolored chlorinated and chlorosulfonated olefin polymers having low levels of residual solvent are prepared in a process wherein monofluorobenzene is used as a reaction medium and isolation of the polymer is by means of a series of vented closed loop extruders. The process also results in suppression of the formation of monochloromonofluorobenzene as a by-product.