Elastomeric Polyurethane-Polyurea Comprising Water Blown Foam Having Improved Mechanical Properties
Patent No. EP4240783 (titled "Elastomeric Polyurethane-Polyurea Comprising Water Blown Foam Having Improved Mechanical Properties") was filed by Huntsman on Nov 4, 2021. The application was issued on Jun 11, 2025.
Patent Summary
A thermoplastic polyurethane-polyurea foam with improved mechanical properties and recyclability. The foam has a tensile strength to density ratio of at least 10 kPa.m3/kg and an apparent density of 150-700 kg/m3. It is produced using a reactive mixture with an isocyanate index of 75-125, comprising difunctional isocyanates and difunctional polyols, and exhibits thermoplastic behavior. The foam can be recycled and remelted into non-foamed thermoplastic materials without significant degradation.
Patent Family
Patent Oppositions
Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
EP4240783
- Application Number
- EP21801946A
- Filing Date
- Nov 4, 2021
- Status
- Granted And Under Opposition
- May 9, 2025
- Publication Date
- Jun 11, 2025
- External Links
- Slate, Register , Google Patents