MAGNETIC COMPOSITE BODY FOR ANTENNA AND ANTENNA ELEMENT USING SAME

WIPO Patent Application WO/2010/035874

A1

A graft copolymer (P) is obtained by graft-polymerizing 18-67 parts by mass of a monomer (B) to 100 parts by mass of a polymer (A).  The polymer (A) is obtained by polymerizing an α-olefin, a conjugated diene, an unsaturated cyclic hydrocarbon or an ethylenically unsaturated bond-containing aromatic monomer.  The monomer (B) is composed of an aromatic monofunctional ethylenically unsaturated monomer (b1) and a bifunctional ethylenically unsaturated monomer (b2), and the mass ratio (b1)/(b2) is within the range from 70/30 to 95/5.  A magnetic composite body for an antenna is obtained by kneading a composition which contains the graft copolymer (P) and a spinel ferrite powder (F) having an average particle diameter of 0.05-20 μm at a mass ratio (P)/(F) of from 10/90 to 60/40.

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OHTA TOSHIHIRO (JP)
SONODA KENSAKU (JP)
KUBOTA KAZUHIRO (JP)
MIZUGUCHI KATSUNOBU (JP)
KAN RIKIYA (JP)
SHIROTA KENICHI (JP)
KOIKE KIYOSHI (JP)

PCT/JP2009/066974

April 01, 2010

September 29, 2009

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NOF CORP (JP)
TOKO INC (JP)
OKI PRINTED CIRCUITS CO LTD (JP)
OHTA TOSHIHIRO (JP)
SONODA KENSAKU (JP)
KUBOTA KAZUHIRO (JP)
MIZUGUCHI KATSUNOBU (JP)
KAN RIKIYA (JP)
SHIROTA KENICHI (JP)
KOIKE KIYOSHI (JP)

H01Q7/06; H01F1/34; H01F1/37; H05K9/00

JP2008195795A	2008-08-28
JP2006351714A	2006-12-28
JP2006290916A	2006-10-26
JPH1032396A	1998-02-03
JPH0923087A	1997-01-21

ONDA, Hironori et al. (JP)
Hironori Onda (JP)

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