Claims
- 1. 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.
- 2. A coating composition of claim 1 in which the amine curing agent (B) is a mixture of two to six parts by weight of an amine of the specified formula and of one part by weight of the polyepoxide, the polyepoxide having an equivalent weight per epoxy-unit of about 180.
- 3. The coating composition of claim 2 wherein the mixture making up the condensation product constituting the curing agent (B) is heated for about one hour at a temperature below 125.degree. C. and cooled before being mixed with part (A).
- 4. A coating composition of claim 1 in which the amine curing agent (B) is a mixture of 70 parts by weight of oleyl diamine and 30 parts by weight of an epoxy resin with an average molecular weight per epoxy unit of about 575, which mixture is heated for 2 hours at 100.degree. C. and then cooled, before being mixed with part (A).
- 5. A coating composition of claim 1 in which the amine curing agent (B) comprises:
- 53 parts octyl amine,
- 30 parts said polyepoxide,
- 10 parts diethylene triamine, and
- 7 parts 2,4,6-tri(dimethylaminomethylphenol).
- 6. A coating composition of claim 1 in which the amine curing agent (B) comprises:
- 2 parts tall oil fatty acid derived diamine wherein R is a mixture of C.sub.18 H.sub.35 and C.sub.18 H.sub.33, and
- 1 part of said polyepoxide.
- 7. A coating composition of claim 1 in which the polyepoxide (A) is mixed with a glycol, before adding the amine curing agent.
- 8. A coating composition of claim 1, in which the amine curing agent (B) is mixed with a glycol.
- 9. A coating composition of claim 1, in which the polyepoxide (A) is mixed with propylene glycol, before adding the amine curing agent (B).
- 10. A coating composition of claim 1 in which the amine curing agent (B) is a mixture of two to six parts by weight of an amine of the specified formula and of one part by weight of the polyepoxide, the polyepoxide having an equivalent weight per epoxy unit of about 575.
- 11. A coating composition of claim 1 in which the polyepoxide constitutes between 15 and 55 percent of said condensation product (B).
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 408,453, filed Oct. 23, 1973, now abandoned, which was a division of application Ser. No. 196,778, filed Nov. 8, 1971, now abandoned, which was a continuation-in-part of application Ser. No. 157,638, filed June 28, 1971, now abandoned.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
196778 |
Nov 1971 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
408453 |
Oct 1973 |
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Parent |
157638 |
Jun 1971 |
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