Oxygen scavenging polyamide compositions suitable for pet bottle applications

本发明公开了除氧阻隔聚酰胺组合物。其具有高的除氧能力以及优良的共注射拉伸吹塑性能，适合于生产透明性和抗脱层性能优良的多层PET瓶子。本发明的聚酰胺组合物包含慢结晶聚酰胺共混物，该共混物包含(i)无定形半芳香族聚酰胺均聚物、共聚物或者其混合物和(ii)半结晶、脂肪族聚酰胺均聚物、共聚物或者其混合物，其中(i)∶(ii)的重量比为大约99∶1到大约30∶70；至少一种与聚酰胺相容的、可氧化的聚二烯烃，和至少一种促进氧化的金属盐催化剂。用本发明聚酰胺组合物作为阻隔层制成的多层PET瓶子适合于对氧敏感的食品和饮料产品例如啤酒和果汁的长贮藏期限包装。 Oxygen scavenging barrier...

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Bibliographische Detailangaben
Hauptverfasser:	C.V. BROWN, J.D. PRATT, M.K. AKKAPEDDI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS 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:	本发明公开了除氧阻隔聚酰胺组合物。其具有高的除氧能力以及优良的共注射拉伸吹塑性能，适合于生产透明性和抗脱层性能优良的多层PET瓶子。本发明的聚酰胺组合物包含慢结晶聚酰胺共混物，该共混物包含(i)无定形半芳香族聚酰胺均聚物、共聚物或者其混合物和(ii)半结晶、脂肪族聚酰胺均聚物、共聚物或者其混合物，其中(i)∶(ii)的重量比为大约99∶1到大约30∶70；至少一种与聚酰胺相容的、可氧化的聚二烯烃，和至少一种促进氧化的金属盐催化剂。用本发明聚酰胺组合物作为阻隔层制成的多层PET瓶子适合于对氧敏感的食品和饮料产品例如啤酒和果汁的长贮藏期限包装。 Oxygen scavenging barrier polyamide compositions exhibiting high oxygen scavenging capability as well as good coinjection stretch blow moldability characteristics suitable for making multilayer PET bottles with good clarity and delamination resistance are claimed in this invention. The polyamide compositions of this invention comprise a slow crystallizing polyamide blend comprising (i) an amorphous, semiaromatic polyamide homopolymer, copolymer or mixture thereof and (ii) a semicrystalline, aliphatic polyamide homopolymer, copolymer or mixture thereof wherein in the weight ratio of (i):(ii) ranges from about 99:1 to about 30:70; at least one polyamide-compatible, oxidizable polydiene; and at least one oxidation promoting metal salt catalyst. The multilayer PET bottles, made with the polyamide compositions of this invention as the barrier layer, are suitable for extended shelf-life packaging of oxygen-sensitive food and beverage products such as beer and juices.