Claims
- 1. A malleable, high density composite material comprising:a high density metal component comprising from 70 to 96 weight percent of the composite material based on an overall weight of the composite material; a polymer phase comprising a blend of polymers having a hard component and an elastomeric component of a narrow molecular weight distribution ethylene/alpha-olefin elastomer.
- 2. The material of claim 1, wherein the material has a density of between 5 to 13 g/cc.
- 3. The material of claim 1, wherein the hard component is a polymer selected from the group consisting of olefins, olefin copolymers, ethylene vinyl acetate, polyethylene, polypropylene, copolymers of polyethylene and copolymers of polypropylene.
- 4. The material of claim 1, wherein the elastomeric component is prepared with a metallocene catalyst.
- 5. The material of claim 4, wherein the elastomeric component is prepared with a metallocene single site constrained geometry catalyst.
- 6. The material of claim 4, wherein the elastomeric component is a polyolefin elastomer.
- 7. The material of claim 4, wherein the elastomeric component is an ethylene based plastomer.
- 8. The material of claim 1, wherein the weight ratio of the hard component to the elastomeric component is between 90:10 to 30:70.
- 9. The material of claim 1, which also comprises a heat stabilizer.
- 10. The material of claim 9, wherein the heat stabilizer is di-tertiary butyl phenol.
- 11. The material of claim 1, which also comprises an oxidative stabilizer.
- 12. The material of claim 11, wherein the oxidative stabilizer is tris-nonylphenyl phosphite.
- 13. The material of claim 1, which also comprises a dispersion aiding component.
- 14. The material of claim 13, wherein the dispersion component is selected from the group consisting of silanes and titanates.
- 15. The material of claim 1, which also comprises a mold release agent.
- 16. The material of claim 15, wherein the mold release agent is a wax.
- 17. The material of claim 15, wherein the mold release agent is a stearate.
- 18. The material of claim 1, wherein the metal component is present in the material at a weight percentage of between 70% and 96% and has a density such that the overall material density is between 5 g/cc and 13 g/cc.
- 19. The material of claim 18, wherein the metal component is at least one of iron, tin, nickel, bismuth, cobalt, tungsten, tungsten carbide and alloys and oxides thereof.
- 20. The material of claim 19, wherein the metal component is tungsten carbide having tungsten, carbon and cobalt components.
- 21. A firearm ammunition comprising:a high density metal component comprising from 70 to 96 weight percent of the firearm ammunition based on an overall weight of the firearm ammunition; a polymer phase comprising a blend of polymers having a hard component and an elastomeric component of a narrow molecular weight distribution ethylene/alpha-olefin elastomer.
- 22. The firearm ammunition of claim 21, wherein the firearm ammunition has a matte surface finish with at least some surface texture.
REFERENCE TO CO-PENDING PATENT APPLICATION
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/098,832 filed on Sept. 2, 1998.
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/098832 |
Sep 1998 |
US |