Epoxidized polyalkenylenes and method for their preparation

US6797787B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Peter Scholz · Lehesten, DE
• Bernd Ondruschka · Leipzig, DE
• Peter Denkinger · Nottuln, DE
• Werner Freitag · Dorsten, DE
• Martina Ortelt · Flein, DE
• Werner Andrejewski · Dorsten, DE
• Andreas Berlineanu · Leipzig, DE

Key dates

• Filing date: Dec 19, 2002
• Grant date: Sep 28, 2004
• Expiry date: Jan 20, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08C19/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An epoxidized polyalkenylene is prepared reacting a polyalkenylene, an aqueous solution of 15 to 90% by volume of hydrogen peroxide and a carboxylic acid having from 1 to 3 carbon atoms in the presence of a catalyst which is phosphonic acid, a derivative of phosphonic acid or a mixture thereof, without addition of an organic solvent or water, to obtain the epoxidized polyalkenylene. The epoxidized polyalkenylene has a number-average molar mass of between 500 and 50 000 g/mol and an epoxide oxygen content of between 1 and 25 percent by mass.