POLYPROPYLENE-BASED RESIN COMPOSITION, HYDROGENATED BLOCK COPOLYMER, MOLDED ARTICLE, AND INTERIOR-EXTERIOR DECORATIVE MATERIAL FOR AUTOMOBILES

WIPO Patent Application WO/2022/025177

A1

Provided are: a polypropylene-based resin composition having excellent impact resistance, particularly impact resistance at a low temperature; a hydrogenated block copolymer contained in said polypropylene-based resin composition; a molded article including said polypropylene-based resin composition; and an interior-exterior decorative material which is for automobiles and which includes said molded article. A polypropylene-based resin composition comprising a polypropylene-based polymer (A), an ethylene-α-olefin copolymer rubber (B), a hydrogenated block copolymer (C), wherein the hydrogenated block copolymer (C) is a hydrogenated product of a block copolymer having at least one polymeric block (C-1) mainly formed of an aromatic vinyl compound unit and having at least one polymeric block (C-2) mainly formed of a butadiene (Bd) unit and an isoprene (Ip) unit, the contained amount of the aromatic vinyl compound unit in the hydrogenated block copolymer is less than 30 mass%, and the vinyl bound amount of the polymeric block (C-2) is 20% or less.

SEKIGUCHI TAKAHIRO (JP)
SENDA YASUSHI (JP)

PCT/JP2021/028090

February 03, 2022

July 29, 2021

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KURARAY CO (JP)

C08L23/08; C08F297/04; C08L23/10; C08L53/02

WO2016039257A1	2016-03-17
WO2019167745A1	2019-09-06
WO2009031625A1	2009-03-12

JP2020001800A	2020-01-09
JP2001106844A	2001-04-17
JPH11130910A	1999-05-18
JPH07188481A	1995-07-25
JP2005320459A	2005-11-17
JPH1067894A	1998-03-10

OHTANI PATENT OFFICE (JP)

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