Preparation of functionalized alkoxyamine initiator and its use

US6686424B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Christophe Detrembleur · Liège, BE
• Thomas Gross · Wermelskirchen, DE
• Rolf-Volker Meyer · Krefeld, DE

Key dates

• Filing date: Jun 19, 2003
• Grant date: Feb 3, 2004
• Expiry date: Jun 19, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A one-pot process for the preparation of functional alkoxyamines of the general formula (I), is disclosed. The process entails (1) reacting an oxidizing agent with a sterically hindered secondary amine to produce an aqueous phase and a nitroxyl radical (2) removing the aqueous phase and adding to the nitroxyl radical one or more vinyl monomer(s) conforming to a formula and a system which produces free radicals. Also disclosed is a process of polymerizing monomers using the functional alkoxyamine.