POLYESTER RESIN COMPOSITIONS

• Main Authors: TANIGUCHI, SHUNRO, OKAMOTO, CHIHIRO
• Format: Patent
• Language: English; French
• Published: 23.12.1999
• Edition: 6
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HANDLING THIN OR FILAMENTARY MATERIAL; 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; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

A polyester resin composition (A) comprising a polyethylene terephthalate copolymer comprising 5 to 40 % by mole of naphthalenedicarboxylic acid units (copolymer PET), a cobalt compound and/or a manganese compound, an olefin polymer, and a predetermined amount of a compatibilizing agent; and another polyester resin composition (B) containing predetermined amounts of a cobalt compound and a manganese compound in the copolymer PET. The compositions are excellent in resistance to hydrogen peroxide, flavor barrier properties, gas barrier properties, heat sealability, and mechanical properties such as elongation and strength, so that they can be utilized in various application s including packaging materials for containers for beverages containing a perfume component, such as fruit juice beverages.