Epoxy resin-based fibre matrix compositions containing alkyl-substituted ethylene amines

US11365283B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Matthaeus Kopczynski · Ludwigshafen, DE
• Ansgar Gereon Altenhoff · Heidelberg, DE
• Dieter Kolassa · Ludwigshafen, DE
• Hannes Ferdinand Zipfel · Ludwigshafen, DE
• Christian Eidamshaus · Mannheim, DE
• Joerg Pastre · Ludwigshafen, DE

Key dates

• Filing date: Apr 9, 2020
• Grant date: Jun 21, 2022
• Expiry date: Apr 9, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2363/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Epoxy resin-based fibre matrix compositions contain alkyl substituted ethylene amines such as dimethyldiethylenetriamine (DMDETA, also dimethyl-1,4,7-triazaheptane), as a curing agent. These curing agents are characterized by a short curing time for a comparatively long processing time, and make it possible to obtain cured epoxy resins that exhibit low brittleness and high tensile strength and have a high glass transition temperature; as a result of which the fibre matrix composition is suitable particularly for use in pultrusion and winding processes.