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Patent Searching and Data


Title:
PREPREG, METAL FOIL-CLAD LAMINATE, AND PRINTED CIRCUIT BOARD
Document Type and Number:
WIPO Patent Application WO/2015/033731
Kind Code:
A1
Abstract:
A prepreg having a thermosetting resin composition (C), which comprises a thermosetting resin (A) and an inorganic filler (B), and a glass cloth (D) in which said thermosetting resin composition (C) has been impregnated or applied. The glass cloth (D) satisfies the expressions (I) - (III) when the thread count of the longitudinal threads configuring the glass cloth (D) is X (threads/inch), the thread count of the width threads is Y (threads/inch), the filament number per single longitudinal thread is x (filaments), the filament number per single width thread is y (filaments), and the thickness is t(μm). (x+y) ≤ 95 (I) 1.9 < (X+Y)/(x+y) (II) t < 20 (III) The content of the inorganic filler (B) in the thermosetting resin composition (C) is 110 - 700 parts by mass with respect to 100 parts by mass of the thermosetting resin (A).

Inventors:
HAMAJIMA TOMOKI (JP)
ITO MEGURU (JP)
SHIGA EISUKE (JP)
KATO YOSHIHIRO (JP)
Application Number:
PCT/JP2014/070742
Publication Date:
March 12, 2015
Filing Date:
August 06, 2014
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
B32B15/08; B29B11/16; H05K1/03
Foreign References:
JP2009263569A2009-11-12
JP2009263824A2009-11-12
JP2004149577A2004-05-27
JP2005213656A2005-08-11
JP2005054293A2005-03-03
JP2009231222A2009-10-08
JP2005213656A2005-08-11
JP2005054293A2005-03-03
JP4407823B22010-02-03
Other References:
See also references of EP 3045283A4
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
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