Waterborne Alkyd Emulsion WAE-45

Waterborne alkyd emulsions like WAE-45 achieve ≤50 g/L VOC versus 300–400 g/L for conventional solventborne alkyds, meeting EU Directive 2004/42/CE Category A product limits. Performance compromises and solutions: (1) Water sensitivity — wet-film water spotting is mitigated by adding 0.5–1% film-forming aid and ensuring application above 10°C; (2) Drying — may require 10% longer drying time than solventborne; adding 0.02–0.05% Co drier improves throughdry; (3) Corrosion resistance — salt spray resistance is typically 200–400 h vs 500–800 h for solventborne; incorporating a zinc phosphate anti-corrosion pigment closes the gap to 400–600 h. WAE-45 is ideal for regulatory-compliant reformulation of existing alkyd product ranges in EU and California markets where solventborne alkyds face VOC restrictions.