Metal-acrylates as curing agents for polybutadiene, melamine and epoxy functional compounds
View Patent ↗The disclosure relates to using metal acrylate compounds such as zinc diacrylate (ZDA), zinc dimethacrylate (ZDMA), among others for curing epoxy functional (and other cross-linking compounds), and to compositions containing such compounds. ZDA and ZDMA containing compounds can cure the epoxy component of the compositions while being substantially free of conventional epoxy curing agents.
1. A heat curable composition comprising at least one epoxy functional resin compound, and about 5 to about 20 weight percent of at least one metal acrylate curing agent which is sufficient to cure said at least one epoxy functional resin compound wherein the composition is substantially free of peroxides, polyamide, acid functional curing agents, dicyandiamide, polysulfides, anhydrides, melamine, urea and imidizole compounds.
2. The composition of claim 1 wherein the composition comprises an automotive sealant.
3. The composition of claim 1 wherein the compound comprises at least one member selected from the group consisting of bis A epoxy, bis F, cycloaliphatic epoxy, novolac compounds and epoxy esters.
4. The composition of claim 1 wherein the composition further comprises at least one filler selected from the group consisting of at least one silicate, silica, trihydrates, carbonates, bitumins, and clays.
5. The composition of claim 1 wherein the composition further comprises at least one additive selected from the group consisting of metal powders, magnetic materials, ceramic powders, plastic powders and resins.
6. The composition of claim 1 wherein the composition further comprises at least one reinforcement.
7. The composition of claim 6 wherein the reinforcement comprises at least one of fibers or film.
8. The composition of claim 1 further comprising at least one complexing agent selected from the group consisting of zirconates and titanates.
9. The composition of claim 1 wherein the metal acrylate curing agent comprises at least one member selected from the group consisting of zinc diacrylate, zinc dimethacrylate, magnesium diacrylate, mixtures thereof and aqueous solutions thereof.
10. The composition of claim 1 wherein the metal acrylate curing agent comprises at least one of zinc diacrylate and dimethacrylate.
11. The composition of claim 9 wherein the metal acrylate curing agent comprises zinc diacrylate.
12. The composition of claim 1 further comprising at least one member selected from the group consisting of silanes and polysiloxanes.
13. The composition of claim 1 further comprises boron nitride.
14. The composition of claim 1 wherein the composition is also substantially free of amines.
15. The composition of claim 3 wherein the epoxy resin comprises cycloaliphatic epoxy.
16. The composition of claim 3 wherein the epoxy resin comprises novalac epoxy.
17. The composition of claim 3 wherein the epoxy resin comprises bis A epoxy.
18. The composition of claim 3 wherein the epoxy resin comprises bis F epoxy.
19. The composition of claim 12 wherein said member comprises polysiloxanes.
20. The composition of claim 8 wherein said complexing agent comprises at least one titanate.
21. The composition of claim 1 further comprising at least one rubber or rubber modified compound.