Long oil alkyds are characterized by having an oil content greater than 55%. They are used extensively for interior and exterior architectural finishes, deck coatings, and chalk adhesion modifiers for latex paint. The high oil content helps give a smooth brushing action. These resins are infinately soluble in aliphalic type solvents. Some high solids systems may be cut in aromatic or oxygenated solvent systems.
Properties:

Excellent flexibility
Good gloss retention and durability
Tack free times of 1-1/2 - 6 hours
Through dry times of 8 -36 hours
Uses:

Interior/exterior architectural finishes
Porch & deck enamels
Deck coatings and stains
Equipment enamels
Railroad finishes
Maintenance paints