BLENDS OF OXYGEN SCAVENGING POLYAMIDES WITH POLYESTERS WHICH CONTAIN ZINC AND COBALT

The present invention concerns a method for forming an article by combining a polyester polymer and an oxygen scavenging composition comprising a polyamide in the presence of zinc and a cobalt in a melt processing zone to form a melt; and forming an article such as a sheet or preform from the melt....

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Bibliographische Detailangaben
Hauptverfasser:	BENJAMIN GAMBLE, LAVONNA SUZANNE BUEHRIG, ROBERT NOAH ESTEP, MARK EDWARD STEWARD, MICHAEL DUANE CLIFFTON, VENKAT GOVINDARAJAN, DONNA RICE QUILLEN, MATTHEW J. DAUZVARDIS
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention concerns a method for forming an article by combining a polyester polymer and an oxygen scavenging composition comprising a polyamide in the presence of zinc and a cobalt in a melt processing zone to form a melt; and forming an article such as a sheet or preform from the melt. Also provided are molten formulated polyester polymer compositions containing a blend of a polyethylene terephthalate polymer and a polyamide polymer along with zinc and cobalt. Articles made from the composition are resistant to the transmission of oxygen, possess short induction periods, and have high capacity for sustaining lengthy periods of low oxygen transmission through the wall of the article. La presente invencion se refiere a un metodo para formar un articulo al combinar un polimero de poliester y una composicion secuestrante de oxigeno que comprende una poliamida en presencia de zinc y un cobalto en una zona de procesamiento de fundido para formar un fundido; y formar un articulo tal como una lamina o preforma del fundido. Tambien se proveen composiciones fundidas formuladas con polimero de poliester que contienen una mezcla de polimero de tereftalato de polietileno y un polimero de poliamida junto con zinc y cobalto. Los articulos hechos a partir de la composicion son resistentes a la transmision de oxigeno, poseen periodos cortos de induccion y tienen alta capacidad para sostener periodos largos de baja transmision de oxigeno a traves de la pared del articulo.