THERMOPLASTIC ELASTOMER COMPOSITION FOR CROSSLINKING FOAMING, METHOD FOR MANUFACTURING MOLDED ARTICLE, AND MOLDED ARTICLE

• Main Authors: FURUICHI MINORU, MORINO KATSUAKI
• Format: Patent
• Language: English
• Published: 15.10.2003
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHARACTERISTIC FEATURES OF FOOTWEAR; CHEMISTRY; COMPOSITIONS BASED THEREON; FOOTWEAR; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING ORREPAIRING FOOTWEAR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PARTS OF FOOTWEAR; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide such a thermoplastic elastomer composition for crosslinking foaming as can give a lightweight sponge having a small factor of shrinkage after the crosslinking foaming little dispersion in the molded articles obtained, moldability to a three-dimensional design and excellent external apparent shape and to provide a crosslinked foamed article at a low cost and suitable as a material for shoe-soles. SOLUTION: The thermoplastic elastomer composition for crosslinking foaming, contains (A) a crosslinkable thermoplastic elastomer, (B) a heat expandable microcapsule and (C) a crosslinker; the method for manufacturing a molded article comprises the steps of: heating this composition having been charged into a mold, increasing with maintenance of the mold shape the volume which the above composition occupies, and producing a molded article of a crosslinked foam with the external shape corresponding to the mold shape; and the crosslinking foamed article such as a shoe-sole material is obtained by means of the above manufacturing method. COPYRIGHT: (C)2004,JPO