ポリプロピレン系樹脂組成物および発泡シート

Japanese Patent JP7331677

B2

To provide a polypropylene-based resin composition from which there are produced a foam sheet and a thermoformed article that have a uniform and fine foam cell and are excellent in appearance, thermoformability, impact resistance, light-weight, rigidity, thermal resistance, thermal insulation, oil resistance, and the like.SOLUTION: A polypropylene-based resin mixture contains 67.5-2.5 pts.wt. of a polypropylene resin (X) having characteristics of (X-i)-(X-iv) and a long-chain branch structure, 2.5-67.5 pts.wt. of a propylene based block copolymer (Y) having characteristics of (Y-i)-(Y-v) which is a multistage polymer composed of a propylene (co) polymer (Y-1) and a propylene-ethylene copolymer (Y-2), and 10-75 pts.wt. of a propylene-α-olefin random copolymer (Z) having characteristics of (Z-i)-(Z-ii). A polypropylene-based resin composition contains 0.01-1.0 pt.wt. of a crystallization nucleus agent (K) relative to 100 pts.wt. of the polypropylene-based resin mixture.SELECTED DRAWING: None

Yasuhiro Yaso
Kazuyuki Ichino

JP2019223099A

August 23, 2023

December 10, 2019

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Japan Polypropylene Corporation

C08L23/10; B29C44/00; B29C44/24; B29C44/36; B29C45/00; B29C48/21; B29C49/04; B29C51/14; B32B5/18; B32B27/32; C08J9/04; C08K5/159; C08K5/527

JP2013199644A
JP2013010890A
JP2015040213A
JP2012102188A
JP2001047537A
JP2002012718A
JP2003025425A

Makoto Ono
Kennori Kanayama
Yoshiyuki Tsubokura
Kazuki Shigemori
Kenji Ando
Hidehiko Ichikawa
Takahiro Aoki
Yoshie Sakurada
Yosuke Kawasaki
Takuya Gomibuchi
Toshikazu Imato
Youichi Iino
Yusuke Ichikawa
Masahiro Moriyama
Yoshikazu Iwase
Yasufumi Shiroyama

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