RESIN FOR POLYETHYLENE HOLLOW MOLDING AND POLYETHYLENE HOLLOW MOLDING THEREWITH

• Main Authors: KAGEYAMA FUMIO, IWAMASA KENJI
• Format: Patent
• Language: English
• Published: 22.05.2001
• Edition: 7
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; 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; GENERAL PROCESSES OF COMPOUNDING; HANDLING THIN OR FILAMENTARY MATERIAL; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; 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; WORKING-UP

PROBLEM TO BE SOLVED: To provide a resin for polyethylene hollow molding capable of obtaining a monolayer or multilayer structure polyethylene hollow molding such as soft bottle, etc., excellent in falling impact resistance and appearance without rough surface, and polyethylene hollow molding having a layer therewith and suitable for food container for such as mayonnaise etc. SOLUTION: This resin for polyethylene hollow molding has a density of 0.930 g/cm3, and a critical viscosity measured in 135 deg.C decalin of 1.6 dl/g or more, and comprises a linear low density polyethylene having a mol. wt. distribution (Mw/Mn) measured by GPC of not smaller then 4. This linear low density polyethylene can be obtained by two-stage polymerization of ethylene and a 3-20C α-olefin, in the presence of, e.g. an olefin polymerization catalyst. This polyethylene hollow molding has a layer comprising the resin for polyethylene hollow molding.