Melamine cyanurate (MCA) UL94 V-0 in PA
CAI Performance Additives has launched a high-efficiency MCA grade designed to enable considerably lower loadings in polyamides. The reduced loading leads to improved retention of mechanical properties, lower compound density, reduced surface defects, low blooming or migration risk, easier colour matching, and improved processing behaviour. The non-halogenated flame retardant is targeted at PA6 and PA66 formulations without glass or mineral fillers, as these are known to dilute the polymer phase and disrupt char formation in MCA-based systems. The specifically engineered melamine cyanurate (MCA) uses a proprietary modification process that reduces inter-particle hydrogen bonding and improves de-agglomeration within the polymer melt. This results in significantly improved dispersion of the MCA phase, allowing more efficient gas-phase nitrogen release and formation of a coherent, foamed char layer during combustion. The improved efficiency directly enables meaningful reductions in loading while maintaining flame performance, achieving UL-94 V-0 ratings down to 0.8 mm in unfilled PA6 and PA66 at typical loadings of approximately 5% in PA6 and 4% in PA66 (around half conventional MCA loadings). Applications include electrical and electronic components such as connectors, terminal blocks, appliance components, and small enclosures where thin-wall flame retardancy, halogen-free compliance, and preservation of base polymer properties are critical.
“CAI Performance Additives launches halogen-free flame retardant for PA6 and PA66”, SpecialChem 9th January 2026 https://www.specialchem.com/polymer-additives/news/cai-performance-additives-launches-halogen-free-flame-retardant-for-pa6-and-pa66
CAI Performance Additives https://www.caiadditives.com/st-mca-h
