Process for preparing polyalkenamers for packaging applications

US10829590B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Roland Wursche · Schneverdingen, DE
• Jurgen Herwig
• Peter Kreis · Dortmund, DE
• Marina Lazar · Langenselbold, DE
• Martin Roos · Oestrich-Winkel, DE
• Goetz Baumgarten · Neubiberg, DE
• Christian Schnitzer · Schneverdingen, DE

Key dates

• Filing date: Oct 6, 2016
• Grant date: Nov 10, 2020
• Expiry date: Aug 25, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2261/71
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process has the ability to produce polyalkenamer-containing compositions. Stages of the process include converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and working up the product mixture to remove at least one of a monomer and an oligomer of the at least one cycloalkene to obtain the polyalkenamer-containing composition. The working up stage is effected by a diafiltration.