POLYESTER RESIN COMPOSITION AND HOLLOW MOLDED CONTAINER MADE THEREFROM

• Main Authors: MASUMOTO, MITSUAKI, NAKAMACHI, KOJI, NIIMI, HIROJI
• Format: Patent
• Language: English; French; German
• Published: 11.02.2004
• Edition: 7
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; HANDLING THIN OR FILAMENTARY MATERIAL; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The object of the present invention is to provide a polyester resin composition which enables obtaining a blow molded container having excellent heat resistance and transparency with high productivity at the molding thereof and to provide a blow molded container composed thereof, in particular, to provide a polyester resin composition which enables obtaining a highly transparent blow molded container and to provide a blow molded container composed thereof. Thus, there is provided a polyester resin composition comprising: (A) a polyethylene terephthalate composed mainly of repeating units derived from a dicarboxylic acid containing terephthalic acid and/or an esterified derivative thereof and a diol containing ethylene glycol and/or an esterified derivative thereof, said polyethylene terephthalate containing diethylene glycol units in a ratio of 0.5 to 2.0% by weight based on the polyethylene terephthalate, said polyethylene terephthalate containing a cyclic trimer, the content of which is not greater than 0.5% by weight based on the polyethylene terephthalate, and (B) an ethylene/(meth)acrylic acid copolymer, optionally together with (C) polyethylene, said ethylene/(meth)acrylic acid copolymer (B) contained in the composition in an amount of 0.1 to 10,000 ppb based on the composition. Further, there are provided a preform formed from the composition and a blow molded container produced therefrom.