Underwater Curable Thermoset Composition

2:

• The two-part system of claim 1, wherein upon mixing the first component and second component, the composition cures at a temperature of about 0° C. to about 50° C.

3:

• The two-part system of claim 1, wherein the first component includes a cement.

4:

• The two-part system of claim 2, wherein the first component includes silicone prepolymer.

5:

• The two-part system of claim 1, wherein the one or more phosphate esters includes a phosphate ester derived from cashew nutshell liquid (CNSL), 2-ethylhexyl qlycidyl ether, phenyl qlycidyl ether, an epoxidized para-tertiary butyl phenol, nonyl phenol ethoxylated phosphate ester, or some combination thereof.

6-9. (canceled)

10:

• The two-part system of claim 1, wherein the epoxy functional material is an epoxidized linseed oil.

11:

• The two-part system of claim 10, wherein the composition includes one or more additives selected from a core-shell polymer, metal carbonate, minerals, reinforcing fiber, hydrophobic silica, a monomer, tabular alumina, or any combination thereof.

12:

• The two-part system of claim 10, including calcium carbonate present in an amount from about 0.01% to about 10% by weight, relative to the total weight of the two-part system.

13:

• The two-part system of claim 1, including an ultrafine calcium carbonate (about 1 micron mean particle size), a fine calcium carbonate (about 4 micron mean particle size), a medium fine calcium carbonate (about 22 micron mean particle size), or any combination thereof.

14:

• The two-part system of any of claim 1, wherein one or both of the first and second component includes Wollastonite.

15:

• The two-part system of claim 1, wherein one or both of the first and second component include fumed silica.

16:

• The two-part system of claim 2, wherein the second component includes P2O5, polyphosphoric acid, or some combination thereof.

17:

• The two-part system of claim 16, wherein the second component includes one or more of tabular alumina, reinforcing fiber, hydrophobic silica, minerals, a monomer, phosphoric acid, or any combination thereof.

18:

• The two-part system of claim 10, wherein the one or more epoxy resins or epoxy functionalized resins include one or more liquid epoxy resins, one or more epoxy phenol novolac resins, one or more aliphatic multifunctional epoxy resins, one or more phenoxy resins, one or more silane modified epoxy resins, or any combination thereof.

19:

• The two-part system of claim 1, including one or more epoxy phenol novolac resins with a functionality from about 2 to about 3;
• an epoxy phenol novolac resin with a functionality from about 3 to about 4;
• or both.

20:

• The two-part system of claim 19, including one or more epoxy phenol novolac resins present in an amount from about 30% to about 70% by weight, preferably about 35% to about 55% by weight, relative to the total weight of the first component.

21-22. (canceled)

23:

• The two-part system of claim 1, wherein the composition cures at a temperature of about 15° C. to about 25° C.

24:

• The two-part system of claim 23, wherein the composition cures in water.

25:

• The two-part system of claim 1, wherein other than the phosphate esters, the two-part system is substantially free of curing agents, latent curing accelerators, or both.

26-33. (canceled)