Studies on the formation of poly(ethylene terephthalate): 3. Catalytic activity of metal compounds in transesterification of dimethyl terephthalate with ethylene glycol
โ Scribed by Kosuke Tomita; Hiroaki Ida
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 442 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0032-3861
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๐ SIMILAR VOLUMES
Pellets of poly(ethylene terephthalate) (PET; 0.48-1.92 g) were heated in anhydrous ethylene glycol (EG; 5 mL) with 2-equivs of NaOH at 150ะC for 80 min or 180ะC for 15 min to convert them quantitatively to disodium terephthalate (Na 2 -TPA) and EG. The disodium salt was precipitated quantitatively
The kinetics of transesterification of dimethyl terephthalate with ethylene glycol performed in the presence of catalysts such as: Pb, Zn, Mg, Co, and Mn acetates and a mixture of Mg, Mn, and Zn acetates has been studied in semibatch conditions. T h e catalytic behavior of Sb203 has been proven, too