The processes involved are exclusively the domain of various companies and no detailed information is available.
It is however known that antimony is used as a process catalyst during the production of PES from dimethylterephtalate [5].Catalysts and stabilisers remain within the synthetic fibres. Water use in polyester productionis less than 0.1% of the amount of water required in cotton growing.
Polyester is used for hotel textiles in blends to increase the fabric durability. Polyester also decreases thelaundering energy requirements due to the hydrophobic nature of polyester fibres.