Use of epoxy resin based on terephthalic acid diglycidyl ester and diaminodiphenyl sulfone

Enhancing epoxy resins with diglycidyl terephthalate and DDS as a curing agent addresses flame resistance and surface quality issues, achieving high flame resistance and processability for fire-sensitive applications.

DE102024127315B3Active Publication Date: 2025-08-28TECHN HOCHSCHULE NURNBERG GEORG SIMON OHM
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Patent Information

Application Number
DE102024127315
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2025-08-28
Estimated Expiration
2044-09-23

AI Technical Summary

Technical Problem

Existing thermoset materials, particularly epoxy resins, lack sufficient flame resistance for fire-sensitive applications, necessitating the use of additional flame retardants and compromising surface quality and processability, while phenolic resins require costly post-processing due to polycondensation reactions.

Method used

Employing a curing agent of diglycidyl terephthalate and diaminodiphenyl sulfone (DDS) to enhance the flame resistance of epoxy resins, reducing the need for flame retardants and ensuring high surface quality without additional treatment.

Benefits of technology

The resulting epoxy resin achieves a V-0 classification in the UL94-V fire test, demonstrating superior flame resistance without dripping, suitable for applications in aviation, rail vehicles, and automotive interiors, and supporting lightweight construction.

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Abstract

The invention relates to materials for use in sensitive areas. The object of the invention is to find materials suitable for fire-sensitive areas that meet high surface quality requirements without post-treatment and exhibit good processability and stability. A further object is to find a material that also has a low density and is therefore suitable for lightweight construction. This object is achieved according to the invention by the features of claim 1. Claims 2 to 5 indicate specific uses for the epoxy resin.
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