alkydiresiiniä

Alkyyliresiiniä, often referred to as alkyd resin in English, is a synthetic resin widely used in coatings and paints. It is a polyester modified with fatty acids and other components. The basic synthesis involves reacting polyols, such as glycerol or pentaerythritol, with polybasic acids, like phthalic anhydride, and then further esterifying these with fatty acids derived from vegetable oils like soybean or linseed oil. The properties of the resulting alkyd resin, such as drying time, flexibility, and hardness, can be precisely controlled by adjusting the type and proportion of the raw materials used.

These resins act as binders in paints, providing adhesion to the surface and forming a continuous film upon drying. The drying process typically occurs through oxidation and polymerization of the unsaturated fatty acid chains when exposed to air. Alkyd resins are known for their good gloss, durability, and resistance to weathering, making them suitable for a wide range of applications including architectural paints, industrial coatings, and protective finishes. They can be formulated as solvent-borne or water-borne systems.