USED AS COPPER FOIL OF FLEXIBLE PRINTED CIRCUIT BOARD MADE OF UNWOVEN FABRIC OR PAPER COATEDOR IMPREGNATED WITH CHEMICALLY BRIDGED PRODUCT

PURPOSE: To obtain a base material satisfying solder bath resistance and the like by coating or impregnating a nonwoven fabric or a paper with a combination of a specified aqueous dispersant comprising acrylnitrile and styrol, a specified aqueous solution of primary condensate of aminoplasto or phen...

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Bibliographische Detailangaben
Hauptverfasser:	FUORUKAA ZUIIKAAMAN, BUERUNAA SHIEEFUAA, YURUGU HAUSUDORUFU, SHIYUTEFUEN KOZATSUKU, TOMASU KUURUMAN, RORUFU SHIYUNAIDAA
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain a base material satisfying solder bath resistance and the like by coating or impregnating a nonwoven fabric or a paper with a combination of a specified aqueous dispersant comprising acrylnitrile and styrol, a specified aqueous solution of primary condensate of aminoplasto or phenoplasto, and specified red phosphorus and ammonium phosphate. CONSTITUTION: a) a 50% aqueous dispersant of thermally crosslinked copolymer of acrylnitrile and styrol having a glass transition point of +33 deg.C, b) a 60% aqueous solution containing methylol group of primary condensate of aminoplasto or phenoplasto, c) red phosphorus having a grain size in the range of 0.45-0.10mm, and d) polyammonium phosphate having a grain size in the range of 0.025-0.075mm are mixed. A nonwoven fabric or a paper is then coated or impregnated with a chemical crosslinked product at a coating amount (dry) of 30-60g/m , a:b (dry) ratio of 10:0.8-10:2.0, c:d ratio of 1:10 and (a+b):(c+d) ratio of 1:0.9.