Epoxy hardening agents

US5032629A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Achim Hansen · Zug, CH
• Alfred Mathes · Duisburg, DE
• Jurgen Zehrfeld · Voerde, DE

Key dates

• Filing date: Feb 28, 1990
• Grant date: Jul 16, 1991
• Expiry date: Feb 28, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G59/184
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel hardening agents for epoxy compounds which are produced by reaction of polyalkylene, polyether amines having a mean molecular weight of 148 to 5,000 with di and/or polyepoxy compounds to a preliminary product, the ratio of the hydrogen atoms possibly remaining after reaction with monoepoxy compounds and bound to nitrogen and which are capable of reaction with epoxide groups, to epoxide groups of diepoxy compounds or polyepoxy compounds in the range of 1:1.4 to 6, and reaction of this preliminary product with a primary or secondary amine, the employed amine or amine mixture being used in an amount such that the ratio of epoxide groups capable of reaction to hydrogen atoms attached to nitrogen is 1:2 to 10.