Polymerization process for aziridine compounds

US4167618A · kind A · utility

Assignee

• ESPE Fabrik Pharmazeutischer Praparate GmbH · DE

Inventors

• Werner Schmitt · Starnberg, DE
• Robert Purrman · Starnberg, DE
• Peter Jochum · Meiningen, AT
• Wolf-Dieter Zahler · Hechendorf, DE

Key dates

• Filing date: Dec 29, 1977
• Grant date: Sep 11, 1979
• Expiry date: Dec 29, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/0213
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A novel process for the polymerization of aziridine compounds is disclosed. The polymerization process includes mixing an aziridine compound with a polymerization initiator having the formula: ##STR1## where R.sup.1 is an alkyl radical of 1 to 18 C atoms, PA1 R.sup.2 is an alkyl radical of 1 to 18 C atoms or a phenyl alkyl radical of 7 to 18 C atoms, wherein said alkyl radicals may contain an ester group and/or ether group, R.sup.3 and R.sup.4 are hydrogen, an alkyl radical of 1 to 18 C atoms, and/or an aryl radical which can be substituted with a chloro, nitro or alkoxy group, whereby the alkyl radicals of R.sup.3 and R.sup.4 together or in combination with B can form a cycloaliphatic or heterocyclic ring, B is an electron attracting radical, and A.sup..crclbar. is a non-nucleophilic anion. Polyimines are quickly formed at ambient temperature.