Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.

Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.

Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.

Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.

Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.

Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.

Abstract: A two component water-based composition which cures in two stages, an initial rapid curing stage and a slower curing stage, comprising as the first component, a mixture of a polyaldehyde chosen from the group consisting of glyoxal glutaraldehyde and derivatives of glyoxal and gluteraldehyde, and a water dispersible component chosen from the group consisting of poxy resin emulsions which can be emulsified in water, synthetic latexes stable at about pH 7 or less, low molecular weight resin emulsions, epoxy ester emulsions, water emulsified alkyds, and cationic, anionic and non-ionic asphalt emulsions and, as the second component, the non-gel reaction product of N,N'-bis(methoxymethyl) uron and a polyamine chosen from a group consisting of primary and secondary amines and/or a monoamine.

Abstract: A new class of epoxy curing agents has been discovered that utilizes the monomer of (a) urea-formaldehyde, (b) phenol modified urea-formaldehyde, or (c) thiourea-formaldehyde as the center of a polyamine molecule. The ether monomers are reacted with conventional aliphatic, cycloaliphatic, and aromatic polyamines to split off alcohol and water-yielding urea-formaldehyde etc., polyamine epoxy curing agents.

Abstract: A new class of epoxy curing agents has been discovered that utilizes the monomer of (a) urea-formaldehyde, (b) phenol modified urea-formaldehyde, or (c) thiourea-formaldehyde as the center of a polyamine molecule. The ether monomers are reacted with conventional aliphatic, cycloaliphatic, and aromatic polyamines to split off alcohol and water-yielding urea-formaldehyde etc., polyamine epoxy curing agents.

Abstract: A water-insoluble curing agent for epoxy resins, made by mixing a major amount by weight of a water-insoluble propylene diamine chosen from the group consisting of the C.sub.8 to C.sub.20 fatty propylene diamines and the C.sub.12 to C.sub.15 ether propylene diamines with a minor amount by weight of a water-soluble polyamine suitable for rapid cure of epoxy resins, mixing the resulting mixture with a water-insoluble substituted phenol to give a water-insoluble reaction product, and then reacting said reaction product with formaldehyde. A novel cured epoxy resin is produced by reacting the agent with an uncured epoxy resin, and the reaction can be done in a wet environment or even under water.

Abstract: A new class of epoxy curing agents has been discovered that utilizes the monomer of (a) urea-formaldehyde, (b) phenol modified urea-formaldehyde, or (c) thiourea-formaldehyde as the center of a polyamine molecule. The ether monomers are reacted with conventional aliphatic, cycloaliphatic, and aromatic polyamines to split off alcohol and water-yielding urea-formaldehyde etc., polyamine epoxy curing agents. Epoxy resins can be readily cured and, with some curing agents, under water, giving new cured epoxy resins.

Abstract: A system comprising an epoxy resin and a particular type of amine curing agent makes possible a method of applying a coating to a wet or moist surface, even to a surface under water. These amine curing agents are substantially insoluble in water and are not water sensitive. The curing agents of this method are chosen from (1) amines of the formula: ##STR1## in which R is chosen from the group consisting of ether radicals of which one of the alkyl and alkylene radicals has at least eight carbon atoms or (2) a condensation product of a small proportion of a polyepoxide having a plurality of vic-epoxy groups and containing only members of the group consisting of carbon, hydrogen, oxygen and chlorine, and a larger proportion of a fatty amine of the formula: ##STR2## R.sub.2 denoting a radical chosen from the group consisting of alkyl radicals having at least eight carbon atoms and ether radicals of which one of the alkyl or alkylene radicals has at least eight carbon atoms.

Abstract: A system comprising an epoxy resin and a particular type of amine curing agent makes it possible to apply a coating to a wet or moist surface, even to a surface under water. These amine curing agents are substantially insoluble in water and are not water-sensitive. The amines which are used in this coating as a curing agent (in the form of a reaction product with a smaller amount of an epoxy resin to make an amine adduct) are of the formula: ##EQU1## in which R is chosen from the group consisting of alkyl radicals having at least eight carbon atoms, and alkyl ether radicals of which one of the alkyl radicals has at least eight carbon atoms. The adduct of amine and epoxy resin is used as the curing agent for the main part of the epoxy resin.