IMMOBILIZED EPOXY ADVANCEMENT INITIATORS

This invention is directed to a process for reacting at an elevated temperature (a) an epoxy resin or a thioepoxide bearing an average of more than one vicinal epoxide or thioepoxide group per molecule with (b) a polyhydric phenol, a polyhydric thiophenol, a carboxylic acid or a carboxylic acid anhy...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HANAFIN, JOSEPH W, DOORAKIAN, GEORGE A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	This invention is directed to a process for reacting at an elevated temperature (a) an epoxy resin or a thioepoxide bearing an average of more than one vicinal epoxide or thioepoxide group per molecule with (b) a polyhydric phenol, a polyhydric thiophenol, a carboxylic acid or a carboxylic acid anhydride. The invention is characterized by conducting the reaction in the presence of sufficient quantity of (c) a trihydrocarbyl phosphine or quaternary phosphonium cation which bear on the average per molecule more than one moiety corresponding to the formula wherein Z is -O- or -S-, R3 at each occurrence is independently a moiety essentially inert in this process, and w is an integer from 0 to 4, so as to promote the reaction of (a) with (b) and (c). These phosphorous compounds are not readily extractable from the resulting resins.