Claims
- 1. A modified polymer material comprising:
a polymer base; and boehmite particles provided in the polymer base, the boehmite particles comprising mainly anisotropically shaped particles having an aspect ratio of at least about 3:1.
- 2. The material of claim 1, wherein the aspect ratio is at least about 6:1.
- 3. The material of claim 1, wherein the largest dimension of the boehmite particles is between about 50 and 2000 nanometers.
- 4. The material of claim 1, wherein the largest dimension of the boehmite particles is between about 100 and 1000 nanometers.
- 5. The material of claim 1, wherein the boehmite particles comprise 0.5 to 20% volume of the modified polymer material.
- 6. The material of claim 1, wherein the boehmite particles comprise 2 to 10% volume of the modified polymer material.
- 7. The material of claim 1, wherein the boehmite particles are free of surface agents.
- 8. The material of claim 1, wherein the boehmite particles are dispersed in the polymer base.
- 9. The material of claim 1, wherein the boehmite particles are dispersed substantially individually and uniformly in the polymer base.
- 10. The material of claim 9, wherein boehmite particles are substantially free of agglomerates in the polymer base.
- 11. The material of claim 1, wherein the polymer base comprises a thermoplastic polymer.
- 12. The material of claim 11, wherein the thermoplastic polymer base comprises polyamide.
- 13. The material of claim 12, wherein the polymer base comprises nylon
- 14. The material of claim 1, wherein the polymer base comprises thermosetting resin.
- 15. The material of claim 14, wherein the polymer base comprises at least one of a phenolic-based resin and an acrylate-based resin.
- 16. The material of claim 1, wherein the boehmite particles are generally directionally aligned in the polymer base.
- 17. The material of claim 16, wherein the modified polymer material comprises an extruded product.
- 18. A modified polymer material comprising:
a polymer base; and boehmite particles free of surface agents and being dispersed in the polymer base.
- 19. The material of claim 18, wherein the boehmite particles are substantially uniformly and individually dispersed in the polymer base.
- 20. The material of claim 18, wherein the boehmite particles are substantially free of agglomerates.
- 21. The material of claim 18, wherein the polymer base comprises a polar polymer.
- 22. The material of claim 18, wherein the boehmite particles are anisotropically shaped.
- 23. The material of claim 22, wherein the aspect ratio is at least about 3:1.
- 24. A boehmite material comprising mainly boehmite particles having an aspect ratio of at least about 3:1.
- 25. The material of claim 24, wherein said aspect ratio is at least about 6:1.
- 26. The material of claim 24, wherein the largest dimension of the boehmite particles is between 50 and 2000 nanometers.
- 27. The material of claim 24, wherein the largest dimension of the boehmite particles is between 100 and 1000 nanometers.
- 28. The material of claim 24, wherein the boehmite particles have a surface area of at least 75 m2/g.
- 29. The material of claim 24, wherein the boehmite particles have a surface area of at least 100 m2/g.
- 30. A method for forming a product, comprising:
providing a modified polymer material comprising a polymer base and boehmite particles comprising mainly anisotropically shaped particles having an aspect ratio of at least about 3:1; and extruding the modified polymer material to form an extruded product, wherein the boehmite particles are dispersed in the extruded product.
- 31. The method of claim 30, wherein the boehmite particles are substantially aligned in the extruded product.
- 32. The method of claim 30, wherein the modified polymer material is extruded into a mold to form an article.
- 33. The method of claim 30 wherein the polymer base comprises a thermoplastic polymer.
- 34. The method of claim 33, wherein the thermoplastic polymer comprises a polyamide.
- 35. The method of claim 30, wherein the aspect ratio is at least about 6:1.
- 36. The method of claim 30, wherein the largest dimension of the boehmite particles is between 50 and 2000 nanometers.
- 37. The method of claim 30, wherein the boehmite particles comprise 0.5 to 20% volume of the modified polymer material.
- 38. The method of claim 30, wherein the boehmite particles are dispersed substantially individually and uniformly.
CROSS-REFERENCE TO RELATED APPLICATION(S)
[0001] The present application claims priority from U.S. provisional patent application No. 60/374,014, filed Apr. 19, 2002, entitled “Novel Boehmite Particles,” naming inventors Ralph Bauer, Christopher L. Mirley and Hui Tang, which application is incorporated by reference herein in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60374014 |
Apr 2002 |
US |