Resin compositions and a process for preparing laminates therefrom

An epoxy resin composition having exceptional stability which is useful in the preparation of electrical laminates comprises an epoxy resin such as the diglycidyl ether of bisphenol A, an organic solvent, a polyhydric phenolic hardener and an acid having a pk. at 25°C of less than 2.5 or an ester or...

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Bibliographische Detailangaben
1. Verfasser:	SEXTON, DIANE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CABLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON CONDUCTORS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING INSULATORS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	An epoxy resin composition having exceptional stability which is useful in the preparation of electrical laminates comprises an epoxy resin such as the diglycidyl ether of bisphenol A, an organic solvent, a polyhydric phenolic hardener and an acid having a pk. at 25°C of less than 2.5 or an ester or anhydride of such acid. The epoxy resin composition can also contain a bisphenol or bisphenol derivative such as bisphenol A. In addition, an accelerator such as an alkyl substituted imidazole can also be added to the composition prior to its use as in the preparation of electrical laminates.