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Title:
GLASS CLOTH, PREPREG AND PRINTED WIRING BOARD
Document Type and Number:
WIPO Patent Application WO/2023/058690
Kind Code:
A1
Abstract:
The present disclosure relates to a glass cloth, a prepreg and a printed wiring board. The present invention provides a glass cloth which is obtained by weaving a glass yarn, wherein: the bulk dielectric loss tangent of the glass that constitutes the glass yarn is 0.0010 or less; the loss on ignition value of the glass cloth is not less than 0.01% by mass but less than 0.12% by mass; and the number of voids of the glass cloth in 5 minutes after being impregnated with a castor oil is 180 or less.

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Inventors:
HIROSE AMANE (JP)
FUKAYA YUKA (JP)
Application Number:
PCT/JP2022/037310
Publication Date:
April 13, 2023
Filing Date:
October 05, 2022
Export Citation:
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Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D03D15/267; C03C25/40; C08J5/08; D06M13/513; H05K1/03
Domestic Patent References:
WO2019065941A12019-04-04
Foreign References:
JP7015973B12022-02-03
JPH051723B21993-01-08
JPH11188728A1999-07-13
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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