ASK CHEMICALS › NECOWEL 580 NECOWEL 580 $0.00 NECOWEL 580 is a cosolvent free short oil alkyd emulsion based on non-yellowing fatty acids. The emulsion is free of APEO, VOC and SVOC. Quantity: Add To Cart Added! NECOWEL 580 is a cosolvent free short oil alkyd emulsion based on non-yellowing fatty acids. The emulsion is free of APEO, VOC and SVOC.