POLYESTER RESIN COMPOSITION AND HOLLOW MOLDED CONTAINER MADE THEREFROM

• Main Authors: MASUMOTO, MITSUAKI, NAKAMACHI, KOJI, NIIMI, HIROJI
• Format: Patent
• Language: English; French; Japanese
• Published: 06.04.2000
• Edition: 6
• 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

A polyester composition comprising (A) polyethylene terephthalate having diethylene glycol units in an amount of 0.5 to 2.0 wt.% based on the resin and (B) an ethylene/(meth)acrylic acid copolymer, the amount of component (B) being 0.1 to 10,000 ppb (of the whole composition); a prefoam formed from the composition; and a hollow molded container obtained by stretch-molding the prefoam. The composition may further contain (C) polyethylene. L'invention concerne une composition de polyester comprenant (A) un poly(éthylène téréphtalate) comportant des unités de diéthylène glycol en quantité comprise entre 0,5 et 2,0 % en poids sur la base de la résine et (B) un copolymère éthylène-acide (méth)acrylique, la quantité du composant (B) étant comprise entre 0,1 et 10,000 ppb (de la composition totale); un produit préexpansé formé à partir de la composition; et un récipient creux moulé obtenu par moulage par étirage du produit préexpansé. La composition peut également comprendre (C) un polyéthylène.