What minerals are in Polyester?

Polyester is primarily made from synthetic polymers, specifically polyethylene terephthalate (PET), which does not contain minerals in its basic structure. However, during the manufacturing process, trace amounts of minerals such as titanium dioxide and calcium carbonate may be added as fillers or pigments. Additionally, recycled polyester may contain small amounts of minerals from the original plastic materials used. Overall, the mineral content in polyester is minimal compared to its polymer composition.