Aqueous curing agents for aqueous epoxy resin dispersions
AssigneeSolutia Austria GmbH
InventorsRoland Feola, Willibald Paar, Johann Gmoser
Life of this patent
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Abstract
Aqueous curing agents for epoxy resin dispersions comprising mixtures, adducts and/or salts of partly esterified organic phosphoric acids A1 or partly esterified phosphonic acids A2 with organic amines B selected from the group consisting of epoxide-amine adducts B1, Mannich bases B2, polyaminoamides B3, and condensation products B4 of diamines or polyamines B42 with di- or polyhydroxyaromatics B41, their preparation and a method of use comprising mixing thereof with aqueous epoxy resin dispersions in particular for coating metals as corrosion protection
Claims16
An aqueous curing agent for aqueous epoxy resin dispersions which comprises mixtures, adducts and/or salts of partly esterified phosphoric acids A1 or partly esterified organic phosphonic acids A2 with organic amines B containing at least one primary amino group which are selected from the group consisting of epoxide-amine adducts B1, Mannich bases B2, polyaminoamides B3, and condensation products B4 of diamines or polyamines B42 with di- or polyhydroxyaromatics B41, the phosphoric and phosphonic acids each containing at least one acidic hydrogen atom and one radical of the esterifying alcohol per molecule.
Dependencies are inferred from the claim text.