POLYMER MATERIAL WITH A URETDIONE-CONTAINING MATERIAL AND INORGANIC FILLER, TWO-PART COMPOSITIONS, PRODUCTS AND PROCESSES
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- 3M INNOVATIVE PROPERTIES CO
- Filing Date
- 2020-12-14
- Publication Date
- 2026-06-03
AI Technical Summary
Current thermally conductive materials for EV battery assemblies face challenges with high thermal conductivity leading to adverse impacts on adhesion, toughness, and viscosity due to high loading of inorganic fillers, and safety concerns from isocyanates used in polyurethane-based compositions.
A curable composition comprising a polymerized reaction product of a uretdione-containing material, a hydroxyl-containing compound, and an inorganic filler, with a uretdione functionality of 1.3 to 2.5 and a number average molecular weight of 950 g/mol or greater, minimizing isocyanate content and maintaining high filler loading.
The solution provides improved adhesion, toughness, and reduced sensitivity to moisture, while maintaining low viscosity and high thermal conductivity, enhancing the reliability and handling of coatings and adhesives.