EPOXY RESINS OF CONTROLLED CONVERSION AND A PROCESS FOR THEIRPREPARATION

Epoxy resins containing both epoxy and terminal hydroxyl groups are prepared by advancing a polyepoxide with a polyol and terminating the reaction at a point such that the epoxy resin reaction product contains at least 0.25 percent of both epoxy and terminal hydroxyl groups. The resulting epoxy resi...

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Bibliographische Detailangaben
Hauptverfasser:	KOENIG,R.A, ELLIOT,B.W
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Epoxy resins containing both epoxy and terminal hydroxyl groups are prepared by advancing a polyepoxide with a polyol and terminating the reaction at a point such that the epoxy resin reaction product contains at least 0.25 percent of both epoxy and terminal hydroxyl groups. The resulting epoxy resins of such controlled conversion exhibit lower melt and solution viscosities than those exhibited by conventional epoxy resins having the same epoxy equivalent weight. The controlled conversion resins are usefully employed in powder coating compositions as well as can coatings and other epoxy formulations wherein the resin is applied from an organic liquid solution or aqueous dispersion.