Self-emulsifying epoxy curing agent based on the reaction product of epoxy resin and polyether polyol

A new epoxy hardener composition is the product of the reaction of (A) a poly(alkylene oxide) monoalcohol with a molecular weight (Mn) of about 500 to 3000 and (B) a polyepoxide, in a molar ratio of polyepoxide to poly(alkylene oxide) monoalcohol of about 1.3:1 to 6:1 to yield an intermediate (C), w...

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Bibliographische Detailangaben
Hauptverfasser:	WALKER, FREDERICK H
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A new epoxy hardener composition is the product of the reaction of (A) a poly(alkylene oxide) monoalcohol with a molecular weight (Mn) of about 500 to 3000 and (B) a polyepoxide, in a molar ratio of polyepoxide to poly(alkylene oxide) monoalcohol of about 1.3:1 to 6:1 to yield an intermediate (C), which in a second step is reacted with (D) a polyamine. The compositions of the invention are excellent emulsifiers of liquid epoxy resins in aqueous media without the addition of added surfactants or acidic compounds, and can be used to prepare water resistant water-borne coatings and related products from both liquid and solid epoxy resins, that possess long pot lives and contain relatively small amounts of volatile organic compounds.