Resins For Surface Coatings. Alkyds & Polyesters ✮

: High oil content (>60%), flexible, and slow-drying; primarily used in architectural paints and wood coatings.

: They are categorized by their "oil length," which refers to the ratio of oil to dibasic acid: Resins for Surface Coatings. Alkyds & Polyesters

: Alkyds are prized for their versatility and durability. However, they are prone to yellowing in interior settings and may lack long-term gloss retention in exterior environments compared to pure polyesters. 2. Polyester Resins: The "Oil-Free" High-Performers : High oil content (>60%), flexible, and slow-drying;