Nonadhesive impression material

US4493911A · kind A · utility

Assignee

• ESPE Fabrik Pharmazeutischer Praparate GmbH · DE

Inventors

• Werner Schmitt · Starnberg, DE
• Robert Purrmann · Starnberg, DE
• Peter Jochum · Meiningen, AT

Key dates

• Filing date: Dec 9, 1983
• Grant date: Jan 15, 1985
• Expiry date: Dec 9, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Impression materials based on cross-linked aziridino-polyester compounds which tend to adhere to the surface to be reproduced, are made nonadhesive by the addition of 1-15% by weight of oleic acid ethanolamide with respect to the aziridino-polyether component, and may thereafter be more easily and smoothly released from the object to be reproduced.