Chemistry:Tritan copolyester
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Tritan[1] is a transparent glass originally developed by the German Schott Zwiesel AG in 2002 together with University of Erlangen–Nuremberg.[2][3] Its name is derived from Titanoxide. In 2012, the Zwiesel Kristallglas AG introduced Tritan Protect.[3][4][5]
The Tritan copolymer offered by the Eastman Chemical Company since 2007 is a transparent glass-like plastic intended to replace polycarbonate, because of health concerns about Bisphenol A (BPA).[6][7] Tritan is a copolymer made from three monomers: dimethyl terephthalate (DMT), cyclohexanedimethanol (CHDM), and 2,2,4,4-tetramethyl-1,3-cyclobutanediol (CBDO).[8] Tritan (PCTG) is made without using any BPA.
In April 2008, Nalgene announced it would phase out production of its outdoor line of polycarbonate containers containing the chemical bisphenol A.[9] Nalgene now uses Tritan as a replacement for polycarbonate, as it does not contain BPA.[10]
Health controversy
In 2011, a neurobiologist at the University of Texas, George Bittner, published an article claiming most polymers, including Tritan, contained other materials with estrogenic activity.[11]
Eastman Chemical Company sued, and after a jury ruled in Eastman's favor, the Court barred Bittner from making claims about Tritan's oestrogenic activity.[6]
Similar products
Other manufacturers have developed similar products including the French ARC International's Kwarx since 2006,[12] the German Glaskoch (de) (Leonardo) Teqton since 2009[13] and the South-Korean SK Chemicals' Ecozen, a glycol-modified polyethylene terephthalate (PETG) since 2010/2011.[14] Other manufacturers propose polypropylene (PP)[15] or methylstyrene (MS) as alternatives to Tritan.
See also
- Ceverit (de) (a chemically hardened glass also known as Superfest and CV-Glas)
- Gorilla Glass
- Borosilicate glass (a heat-resistant glass)
References
- ↑ register.dpma.de Brand Tritan
- ↑ "Wohnen mit Glas" (in de-CH). Handelszeitung. https://www.handelszeitung.ch/unternehmen/wohnen-mit-glas.
- ↑ 3.0 3.1 Handelsblatt Unternehmensportrait "Schott Zwiesel – Das Kristallglas", 2012-12-18. https://www.handelsblatt.com/marken-des-jahrhunderts/unternehmensportraet-schott-zwiesel-das-kristallglas/7536832.html
- ↑ "TRITAN Kristallglas - Zwiesel Kristallglas AG" (in de). 2020-09-29. https://unternehmen.zwiesel-kristallglas.com/de/cms/innovations/success/tritan.html.
- ↑ Zwiesel Kristallglas AG (ed): Zwiesel Kristallglas AG. Perfektion und Leidenschaft. Print-Consult, München 2005. pp. 31, 49.
- ↑ 6.0 6.1 Glausiusz, Josie (2014). "Toxicology: The plastics puzzle". Nature 508 (7496): 306–308. doi:10.1038/508306a. PMID 24740050. Bibcode: 2014Natur.508..306G.
- ↑ https://www.spektrum.de/news/wie-gefaehrlich-sind-bisphenol-a-und-seine-ersatzstoffe/1285126
- ↑ Osimitz, T. G.; Eldridge, M. L.; Sloter, E.; Welsh, W.; Ai, N.; Sayler, G. S.; Menn, F.; Toole, C. (2012). "Lack of androgenicity and estrogenicity of the three monomers used in Eastman's Tritan copolyesters". Food and Chemical Toxicology 50 (6): 2196–2305. doi:10.1016/j.fct.2012.02.010. PMID 22343188.
- ↑ "Nalgene to Phase Out Production of Consumer Bottles Containing BPA" (PDF). Reuters. 2008-04-18. https://www.reuters.com/article/2008/04/18/idUS122181+18-Apr-2008+BW20080418.
- ↑ "Nalgene Choice". http://www.nalgenechoice.com/everyday.html. "Requires Adobe Flash"
- ↑ Yang, Chun Z.; Yaniger, Stuart I.; Jordan, V. Craig; Klein, Daniel J.; Bittner, George D. (2011). "Most Plastic Products Release Estrogenic Chemicals: A Potential Health Problem That Can be Solved". Environmental Health Perspectives 119 (7): 989–996. doi:10.1289/ehp.1003220. PMID 21367689.
- ↑ https://www.decanter.com/wine-news/unbreakable-glass-launched-94241/
- ↑ https://www.perspektive-mittelstand.de/twenty4-erste-Glasserie-von-LEONARDO-aus-dem-Glasmaterial-TEQTON-/pressemitteilung/21133.html
- ↑ https://www.ferroplast.com/pdf/Ecozen_Brochure.pdf
- ↑ https://www.isybe.de/die-perfekte-trinkflasche/polypropylen-statt-tritan/
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