The raw material for terylene is petroleum. Terylene is a type of polyester fiber, and it is made from purified terephthalic acid (PTA) and monoethylene glycol (MEG), both of which are derived from petroleum. The PTA and MEG are first reacted together to form a polymer, which is then extruded through spinnerets to create the terylene fibers. Terylene is commonly used in clothing, textiles, and packaging materials due to its strength, durability, and wrinkle-resistant properties.