There is much historical evidence that plant oils and animal fats were among the first binders to be used for paints and coatings. Their easy availability and ability to form a coherent film when applied to a surface and exposed to air, which oxidizes them, have made them very attractive as a coating raw material from historical and earlier times. With the availability of synthetic resins of a wide variety and higher performance during and after The Second World War, usage of oils as the sole binders has diminished, but they are still used considerably as raw material for various synthetic binders such as alkyd resins, epoxy esters and uralkyds. In recent years, with increasing awareness of environmental issues and the need for sustainable coatings, natural oilbased resins have made a significant comeback as green materials.
Natural oils for surface coatings
24 августа, 2015 Pokraskin