Color Stable Copolyamide Hot Melt Pellets For Hot Melt Yarn Extrusion Phenolic Yellowing Resistance Our color stable copolyamide hot melt pellets are specially engineered for hot melt yarn extrusion. Featuring excellent phenolic yellowing resistance, this copolyamide raw material maintains consistent shade and avoids discoloration especially for white and light-colored fusible yarns. It delivers stable melt flow and good spinnability during continuous extrusion process,