OXYGEN-SCAVENGING POLYESTER COMPOSITIONS USEFUL FOR PACKAGING

Oxygen-scavenging polyester compositions are disclosed that include residues of one or more unsaturated diols having from 4 to 8 carbon atoms, in an amount from about 0.01 mole percent to about 10 mole percent, and residues of terephthalic acid in an amount of at least 50 mole percent, in each case...

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Bibliographische Detailangaben
Hauptverfasser:	STEWART, MARK, EDWARD, MORROW, REBEKAH, FAUVER, JENKINS, JASON, CHRISTOPHER
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Oxygen-scavenging polyester compositions are disclosed that include residues of one or more unsaturated diols having from 4 to 8 carbon atoms, in an amount from about 0.01 mole percent to about 10 mole percent, and residues of terephthalic acid in an amount of at least 50 mole percent, in each case based on the total amount of residues of dicarboxylic acids in the polyester composition comprising 100 mole percent. The polyester compositions typically have an intrinsic viscosity that is at least 0.65 dL/g. L'invention porte sur des compositions de polyester absorbant l'oxygène, qui comprennent des restes d'un ou de plusieurs diols insaturés ayant de 4 à 8 atomes de carbone, en une quantité allant d'environ 0,01 pour cent en moles à environ 10 pour cent en moles, et des restes d'acide téréphtalique en une quantité d'au moins 50 pour cent en moles, dans chaque cas sur la base de la quantité totale de restes d'acides dicarboxyliques dans la composition de polyester qui représente 100 pour cent en moles. Les compositions de polyester ont typiquement une viscosité intrinsèque qui est d'au moins 0,65 dl/g.