ETHYLENE RESIN AND BLOW-MOLDED ARTICLE COMPRISING THE SAME

• Main Authors: FUKUSHI KEIKO, IWAMASA KENJI, OKAMOTO MASAHIKO
• Format: Patent
• Language: English
• Published: 23.10.2008
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; 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 TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HANDLING THIN OR FILAMENTARY MATERIAL; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; 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

Disclosed is an ethylene resin which satisfies all of the following requirements [a] to [c]: [a] the environmental stress cracking resistance (ESCR) T as measured at 50°C in accordance with ASTM-D-1693 is 500 hours or longer when the flexural modulus is 1000 to 1500 MPa and 100 hours or longer when the flexural modulus is 1500 to 2000 MPa; [b] the melt tension as measured at 190°C is 50 (mN) or greater; and [c] the crack speed under melt drawing is 90 (m/min) or less. The ethylene resin is excellent in strength and moldability and can be used suitably for a blow-molded article (a hollow molded article).