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Zeolite catalyzed glycolysis of poly(ethylene terephthalate) bottle waste

✍ Scribed by S. R. Shukla; Vikrant Palekar; Navnath Pingale

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
125 KB
Volume
110
Category
Article
ISSN
0021-8995

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To reclaim the monomers or prepare intermediates suitable for other polymers zinc acetate catalayzed glycolysis of waste poly(ethylene terephthalate) (PET) was carried out with ethylene or propylene glycol, with PET/glycol molar ratios of 1 : 0.5-1 : 3, in xylene at 170-245ЊC. During the multiphase

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The experiments were carried out in excess ethylene glycol (EG) and poly(ethylene terephthalate) (PET) oligomer in the presence of zinc acetate as catalyst at 190Β°C. It was found that during the glycolysis reaction, the monomer and dimer were contained in the liquid phase. After 2 h of the glycolysi