LOW-DIELECTRIC-TANGENT SILICA SOL, AND METHOD FOR PRODUCING LOW-DIELECTRIC-TANGENT SILICA SOL

There is to provide silica particles having a dielectric loss tangent of 0.01 or less at 1GHz and satisfying the requirements (i), (ii) and (iii):(i)an average primary particles diameter of 5 nm to 120 nm;(ii) a ratio of a specific surface area by water vapor adsorption (SH2O) to a specific surface...

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Hauptverfasser:	NAKADA, Takeshi, SUGISAWA, Masatoshi, ARAKI, Megumi, EBARA, Kazuya
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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creator	NAKADA, Takeshi SUGISAWA, Masatoshi ARAKI, Megumi EBARA, Kazuya
description	There is to provide silica particles having a dielectric loss tangent of 0.01 or less at 1GHz and satisfying the requirements (i), (ii) and (iii):(i)an average primary particles diameter of 5 nm to 120 nm;(ii) a ratio of a specific surface area by water vapor adsorption (SH2O) to a specific surface area by nitrogen adsorption (SN2); i.e., (SH2O/SN2) of 0.6 or less; and(iii) a total silanol group content of 5% or less as determined by the following Formula (1): totalsilanolgroupcontent%=Q2×2/4+Q3×1/4+Q4×0/4 [in Formula (1), each of Q2, Q3 and Q4 is the proportion (%) of the peak areas derived from silicon atom structures], and a silica dispersion.
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i.e., (SH2O/SN2) of 0.6 or less; and(iii) a total silanol group content of 5% or less as determined by the following Formula (1): totalsilanolgroupcontent%=Q2×2/4+Q3×1/4+Q4×0/4 [in Formula (1), each of Q2, Q3 and Q4 is the proportion (%) of the peak areas derived from silicon atom structures], and a silica dispersion.</abstract><oa>free_for_read</oa></addata></record>
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subjects	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
title	LOW-DIELECTRIC-TANGENT SILICA SOL, AND METHOD FOR PRODUCING LOW-DIELECTRIC-TANGENT SILICA SOL
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