PROCESS FOR PRODUCING MOULDED MATERIALS FROM UNSATURATED POLYESTER RESINS

1. A process for the preparation of a heat-stable molding having high heat distortion resistance from unsaturated polyester resins which contain cyclopentene or cyclohexene groups by curing solutions of unsaturated polyesters in vinyl monomers at elevated temperatures, wherein curing is carried out...

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Bibliographische Detailangaben
Hauptverfasser:	DEMMLER, KURT, SCHOLZ, DANKMAR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	1. A process for the preparation of a heat-stable molding having high heat distortion resistance from unsaturated polyester resins which contain cyclopentene or cyclohexene groups by curing solutions of unsaturated polyesters in vinyl monomers at elevated temperatures, wherein curing is carried out in two stages, first at below 100 degrees C in the presence of free radical formers which decompose at these temperatures, and then at above 200 degrees C in the presence of free radical formers which decompose above 140 degrees C, or by irradiation with accelerated electrons.