Polyurethanes and polyurethane-ureas based on aromatic uret dione diamine adducts

US4520186A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Heinrich Hess · Cologne, DE
• Gerhard Grogler · Leverkusen, DE
• Richard Kopp · Cologne, DE

Key dates

• Filing date: Aug 25, 1983
• Grant date: May 28, 1985
• Expiry date: Aug 25, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/3237
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aromatic uret dione diurea diamines corresponding to the formula ##STR1## in which X, Y, m and n are as defined herein are produced by reacting an aromatic diamine with a diisocyanate corresponding to a specified formula in a molar ratio of diamine to diisocyanate of at least 1.8 to 1. These diamines are particularly useful in the production of elastomers.