Composition for coating wet surfaces or surfaces immersed in water
AssigneePacific Vegetable Oil Corporation
InventorLowell O. Cummings
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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.
Claims11
A coating composition capable of being applied on and adhering to a wet surface or object, consisting essentially of an intimate mixture of:
- A. an epoxy resin free of water and of unreactive solvents for said resin consisting 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
- B. a substantially stoichiometric amount of an amine curing agent which is substantially insoluble in water and not water-sensitive and is 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 C, H, O, and Cl, and a large proportion of a fatty amine of the formula:
- ##EQU2## where R.sub.2 is chosen from the group consisting of alkylradicals having at least eight carbon atoms and alkyl ether radicals of which one of the alkyl radicals has at least eight carbon atoms.
Dependencies are inferred from the claim text.