ELECTROMAGNETIC WAVE-ABSORBING COMPOSITION COMPRISING THERMOPLASTIC RESIN OR THERMOPLASTIC ELASTOMER, AND MOLDED ARTICLE COMPRISING SAME

WIPO Patent Application WO/2024/101248

A1

The present invention addresses the problem of providing an electromagnetic wave-absorbing composition comprising a thermoplastic resin or a thermoplastic elastomer, wherein the composition has electromagnetic wave-absorbing capability and can suppress an increased fluidity during heating. This electromagnetic wave-absorbing composition is characterized by comprising component (A) that is at least one compound selected from thermoplastic resins and thermoplastic elastomers and component (B) that is Fe-Cr-Si soft magnetic metal powder at a mass ratio (component (A)/component (B)) in the range of 5/95-80/20, further comprising component (C) that is at least one compound selected from phosphite compounds and phosphate compounds at an amount of 0.02-1.4 parts by mass relative to 100 parts by mass of the total of said components (A) and (B), and having an electromagnetic wave absorption energy P at 79 GHz of 5 kW/m3 or more.

KAMIYA MOTONOBU (JP)
MAEDA MAKI (JP)
SHIMIZU TAKAHIRO (JP)
HORI YUSAKU (JP)
SAITO AKIHIKO (JP)
NAKAMA YU (JP)

PCT/JP2023/039490

May 16, 2024

November 01, 2023

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TOYOBO MC CORP (JP)
DAIDO STEEL CO LTD (JP)

C08L101/00; B22F1/00; B22F1/052; B22F3/00; C01B33/06; C08J5/18; C08K3/08; C08K5/521; C08K5/524; C22C38/00

WO2007013436A1

2007-02-01

JP2022016388A	2022-01-21
JP2007169417A	2007-07-05

USFI PATENT ATTORNEYS INTERNATIONAL OFFICE (JP)

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