THERMOPLASTIC ELASTOMER COMPOSITION AND MOLDED BODY

WIPO Patent Application WO/2022/138522

A1

[Problem] To provide a thermoplastic elastomer composition that has excellent resistance to compression set in high temperature environments, fluidity during melt molding, and heat seal adhesiveness with other types of material. [Solution] A thermoplastic elastomer composition according to the present invention which comprises a resin component and an additive is characterized in that: the resin component contains a styrene block copolymer which includes a covalently cross-linked part and a polyolefin which has a weight-average molecular weight of 80,000-500,000; the contained amount of the styrene block copolymer is 40-95 mass% with respect to the entirety of the resin component; the contained amount of the polyolefin is 5-60 mass% with respect to the entirety of the resin component; and the additive contains a polyester compound and/or an acid-modified compound which has a weight-average molecular weight of not less than 1,000 but less than 80,000 and which has a functional group derived from a carboxylic acid and/or a derivative thereof, and a cross-linking agent which can cross-link at least one of the styrene block copolymer and the polyolefin.

MURAKAMI HIROAKI (JP)
YAMAKI KOUSUKE (JP)
CHINO KEISUKE (JP)
SAKAI AKANE (JP)

PCT/JP2021/046904

June 30, 2022

December 20, 2021

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ENEOS CORP (JP)

C08K5/00; C08L23/00; C08L53/00; C08L53/02; C08L67/00; C08L91/00; C08L101/08

WO2009151029A1	2009-12-17
WO2008146739A1	2008-12-04
WO2008023758A1	2008-02-28

JP2013028761A	2013-02-07
JPS62131052A	1987-06-13
JP2017057322A	2017-03-23
JP2010174196A	2010-08-12
JP2010254799A	2010-11-11
JPH10273511A	1998-10-13
JP2017057323A	2017-03-23

NAKAMURA Yukitaka et al. (JP)

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