Latent curing accelerators
Patent Information
- Application Number
- PL2017884679T
- Authority / Receiving Office
- PL · PL
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-12-21
- Filing Date
- 2017-12-21
- Publication Date
- 2026-07-06
- Estimated Expiration
- 2037-12-21
AI Technical Summary
Existing one-component epoxy resin compositions face challenges in achieving both long pot-life and rapid curing at moderate temperatures without compromising mechanical and thermal properties, with conventional curing agents like dicyandiamide and imidazoles leading to brittleness and storage stability issues.
Incorporating a protected base in the form of a salt or adduct that forms a curable composition with an epoxy resin, allowing for extended storage stability and rapid curing upon heating, achieved by selecting specific cyanoacetic acid derivatives and bases that form salts or adducts, which are activated at defined temperatures.
The composition provides a balance of long pot-life and rapid curing, producing materials with outstanding mechanical and thermal properties, with pot-life ranging from 30 minutes to over 4 months and curing at temperatures between 70°C to 250°C.