Fluororesin composition, fluororesin sheet, laminate and substrate for circuits

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12267954
APP PUB NO 20240215161A1
SERIAL NO

18600472

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Abstract

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A laminate, including a fluororesin sheet; and a base material. The fluororesin sheet including a fluororesin composition containing: a melt moldable fluororesin; and a silica. The fluororesin is a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and/or a tetrafluoroethylene-hexafluoropropylene copolymer having 25 or more carbonyl group-containing functional groups per 106 main-chain carbon atoms; the silica is a spherical silica; a blending ratio of the spherical silica to a total amount of the fluororesin and the silica is 50% by mass or higher and 70% by mass or lower; the fluororesin composition has a linear expansion coefficient of 100 ppm/° C. or lower and a melt flow rate (MFR) of 1.0 g/10 min or higher and 30 g/10 min or lower. Also disclosed is a substrate for circuits including the fluororesin sheet used as a part in a multilayer structure.

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Patent Owner(s)

Patent OwnerAddress
DAIKIN INDUSTRIES LTDOSAKA-SHI OSAKA 530-8323

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komori, Hirokazu Osaka, JP 76 263
Komori, Masaji Osaka, JP 26 102
Terada, Junpei Osaka, JP 55 127
Ueda, Yuki Osaka, JP 105 215
Yoshimoto, Hiroyuki Osaka, JP 59 279

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