Flame retardant polymeric compositions
A polymeric composition with a polar ethylene-based polymer and a specific intumescent flame retardant mixture addresses the challenge of achieving low HFnPH and HFnSEA, maintaining mechanical properties, and enhancing flame retardancy in wire and cable jackets.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DOW GLOBAL TECHNOLOGIES LLC
- Filing Date
- 2025-09-15
- Publication Date
- 2026-05-21
AI Technical Summary
Existing polymeric compositions using thermoplastic ethylene-based polymers with intumescent flame retardants face challenges in achieving low HFnPH and HFnSEA while maintaining mechanical properties, particularly when incorporating high levels of halogen-free flame retardant fillers.
A polymeric composition comprising a polar ethylene-based polymer and an intumescent flame retardant mixture of piperazine pyrophosphate and a phosphoric acid compound, such as melamine polyphosphate, at a specific weight ratio, without non-polar ethylene-based polymers, to achieve low HFnPH and HFnSEA.
The composition achieves a HFnPH of 100 kW/m² or less and an HFnSEA of 200 m²/kg or less, while maintaining tensile strain at break and peak heat release rate within acceptable limits.
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