Poly(alkylene co-adipate terephthalate) prepared from recycled polyethylene terephthalate having low impurity levels

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United States of America Patent

PATENT NO 9828461
SERIAL NO

14170125

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Abstract

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This disclosure relates to an aliphatic-aromatic copolyester of poly(butylene-co-adipate terephthalate) that is prepared from recycled polyethylene terephthalate in the presence of titanium catalyst and a phosphorous containing compound. The copolyester is contaminated with little or no ethylene glycol and/or isophthalic acid, which are artifacts of preparing the copolyester from recycled PET. Advantageously, because there is little or no contamination from ethylene glycol and/or isophthalic acid in the copolyester, there is essentially no depression in the material's melting temperature.

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Patent Owner(s)

  • SABIC GLOBAL TECHNOLOGIES B.V.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alidedeoglu, Husnu Alp Evansville, US 41 112
Kannan, Ganesh Evansville, US 93 2079

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