Improving waterborne alkyd resins with fatty acids

Coatings derived from resins containing nondrying (saturated) fatty acids behave better, as expected, than those containing drying oils. However, the coating derived from the resin containing ricinoleic acid only as the fatty acid component, displayed a remarkable weathering stability, similar to the nondrying formulations, owing to the likely involvement of the fatty acid hydroxyl moiety to the crosslinking reaction with isocyanate