Polyester polyols from recycled polymers and waste streams

The present invention relates to polyester polyols made from aromatic polyacid sources such as thermoplastic polyesters. The polyols can be made by heating a thermoplastic polyester such as virgin polyethylene terephthalate, recycled polyethylene terephthalate, or mixtures thereof, with a glycol to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Vrabel Eric David, Mukerjee Shakti L, Beatty Matthew J, Rogers Kevin Anthony, Kovsky Jack Rogers, Spilman Gary E, Brown Matthew Thomas, Tabor Rick, Christy Michael Robert, Bae Woo-Sung
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to polyester polyols made from aromatic polyacid sources such as thermoplastic polyesters. The polyols can be made by heating a thermoplastic polyester such as virgin polyethylene terephthalate, recycled polyethylene terephthalate, or mixtures thereof, with a glycol to give a digested intermediate which is then reacted with a digestible polymer, which can be obtained from various recycle waste streams. The polyester polyols comprise a glycol-digested polyacid source and a further digestible polymer. The polyester polyols provide a sustainable alternative to petrochemical or biochemical based polyester polyols.