Patents on Phosphorus-based Stabilizers

RAFT engineered DOPO Polymers for Melt spinnable, Char forming Polyamide Flame Retardancy

Patent profile:

Novel flame retardants for polyamide fibers in particular Polyamide-6.6 suitable for e melt spinning process or tmanufacturing filaments by extrusion. 

Benefits for potential applications:

  • Intrinsic flame retardancy without coatings: co‑melts with PA for fibers/filaments; avoids wash‑off, abrasion loss, and post‑treat steps.
  • Process‑tunable for spinning/3D printing: RAFT control of molar mass/composition to meet tight viscosity windows; good solubility and thermoplastic processability.
  • High phosphorus content: promotes char and reduces flame dripping; improved durability versus particulate FRs.
  • Broad compatibility: effective in neat PA6 and PA66, blends, and other thermoplastics; standard compounding and extrusion.