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Petrova-Kuminskaya S.V.,Mogilev State University | Baranov O.M.,Mogilev State University | Rabushka E.A.,Mogilevkhimvolokno Corporation
Fibre Chemistry | Year: 2014

The effects on ethyleneglycol of several catalysts and heat stabilizers for polyethyleneterephthalate synthesis in the range 150-280°C were studied. All side products, the principal ones of which were methyldioxolane, diethyleneglycol, acetaldehyde, and ethyleneglycol monoacetate, were identified. Their content reached 9-12% after heating to 280°C with phosphorous and phosphoric acids and antimony catalysts. Organophosphorus stabilizers and Ti and Mn catalysts were sufficiently inert toward ethyleneglycol. © 2014, Springer Science+Business Media New York.


Zaloga M.I.,Mogilevkhimvolokno Corporation | Zaloga A.M.,Mogilevkhimvolokno Corporation | Mozheiko Y.M.,Mogilevkhimvolokno Corporation | Borovikova N.N.,Mogilevkhimvolokno Corporation | Filippenko Z.A.,Mogilev State University
Fibre Chemistry | Year: 2014

Two grades of polyols were produced as a result of research performed at the pilot stand in the organic synthesis plant of Mogilevkhimvolokno Corp. They were aromatic oligoesters based on dimethylterephthalate production wastes and vat residues from ethyleneglycol regeneration columns that were used to produce PUR and PUR-PIR hard plastic foams used as thermal insulators, sandwich panels, and other items. Laboratory tests are continuing in order to optimize the syntheses of polyols with different compositions based on dimethyl- and polyethyleneterephthalate production wastes. © 2014, Springer Science+Business Media New York.

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