Thermoplastic elastomer composition, formed article of the same and composite formed article of the same

• Main Authors: TASAKA, MICHIHISA, SUKA, TAKAAKI
• Format: Patent
• Language: English; French; German
• Published: 20.12.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

It is an object of the present invention to provide a thermoplastic elastomer composition excellent in softness, permanent compression set (both short- and long-term), and controlled in bleed-out of the softening agent. It is another object of the present invention to provide a formed article and composite formed article of the above thermoplastic elastomer composition. The present invention provides a thermoplastic elastomer composition containing: (a) 100 parts by weight of at least one hydrogenated block copolymer, (b) 30 to 150 parts by weight of a non-aromatic-based softening agent for rubber; and (c) 3 to 100 parts by weight of a petroleum hydrocarbon resin having a softening point of 80 to 170 DEG C, and a temperature at which the resin exhibits a melt viscosity of 10 poise is 120 to 250 DEG C, and formed article and composite formed article thereof.