VERFAHREN ZUR HERSTELLUNG SELBSTVERLOESCHENDER SCHICHTPRESSTOFFE

VERFAHREN ZUR HERSTELLUNG SELBSTVERLOESCHENDER SCHICHTPRESSTOFFE

Self-extinguishing laminates are made by an improved process, wherein individual layers of a carrier material are impregnated with a thermosetting phenolic resin containing a flame-retardant agent and the impregnated layers are placed one above another and bonded together by compressing them at elev...

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Bibliographische Detailangaben
Hauptverfasser: CREMER,JOSEPH,.DR, SCHOENROGGE,BURKHARD, WORTMANN,JOACHIM,.DR, DANY,FRANZ-JOSEF,.DR
Format: Patent
Sprache:ger
Schlagworte:
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
CHEMISTRY
COMPOSITIONS BASED THEREON
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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
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Beschreibung
Zusammenfassung:Self-extinguishing laminates are made by an improved process, wherein individual layers of a carrier material are impregnated with a thermosetting phenolic resin containing a flame-retardant agent and the impregnated layers are placed one above another and bonded together by compressing them at elevated temperature and under elevated pressure to give a hardened laminate. More specifically, finely pulverulent phosphorus pentanitride as a flame-retarding agent is dispersed in the plasticized or non-plasticized thermosetting phenolic resin, with or without a diluent; the phenolic resin, based on its solid matter content, and the phosphorus pentanitride being used in an approximate ratio by weight of 100:4 to 100:15; and the phenolic resin, based on its solid matter content, and the carrier being used in an approximate ratio by weight of 100:80 to 100:150.