Tritan copolyester

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Tritan, a copolymer offered by the Eastman Chemical Company since 2007, is a transparent plastic intended to replace polycarbonate, because of health concerns about Bisphenol A (BPA). Tritan is a copolymer made from three monomers: dimethyl terephthalate (DMT), cyclohexanedimethanol (CHDM), and 2,2,4,4-Tetramethyl-1,3-cyclobutanediol (CBDO). Tritan or Poly Cyclohexylenedimethylene Terephthalate Glyco (PCTG) is made without using any bisphenols or phthalate plasticizers. Compared to similar resins, Eastman says Tritan has improved resistance to heat and chemicals, with less degradation in conditions such as dishwashing, microwaving, and when used with hot beverages. In April 2008, Nalgene announced it would phase out production of its outdoor line of polycarbonate containers containing the chemical bisphenol A. Nalgene now uses Tritan as a replacement for polycarbonate, as it does not contain BPA.