Claims
- 1. A poly(tetrafluoroethylene) polymer having:
(i) a melt flow index (372° C.; 10 kg) of at least 0.1 g/10 min; (ii) a strain at break at (25° C.; 100/min) of at least 125%; (iii) a tensile strength (150° C.; 100/min) of at least 7 MPa; (iv) a co-monomer content below 2.2 wt %; (v) a peak melting temperature above 315° C.; (vi) a crystallinity below 60%; and (vii) one or more of the following parameters:
(a) a peak melting temperature below 320° C.; (b) a crystallinity between 30% and 54%; (c) a melt-flow index (372° C./10 kg) below 10 g/10 min; (d) a co-monomer content above 1 wt %.
- 2. The polymer of claim 1, wherein said polymer has a peak melting temperature in the range of above 315° C. to below 320° C.
- 3. The polymer of claim 1, wherein said polymer has a crystallinity between 30% and 54%.
- 4. The polymer of claim 1, wherein said polymer has a melt-flow index (372° C./10 kg) below 10 g/10 min.
- 5. The polymer of claim 1, wherein said polymer has a co-monomer content above 1 wt %.
- 6. The polymer according to any one of claims 1-5, wherein said polymer has two or more of said parameters (a)-(d).
- 7. The polymer according to any one of claims 1-5, wherein said polymer has three or more of said parameters (a)-(d).
- 8. The polymer of claim 1, wherein said polymer has all four of said parameters (a)-(d).
- 9. The polymer according to any one of claims 1-8, wherein said polymer has a melt flow index (372° C.; 10 kg) of at least 0.6 g/10 min.
- 10. The polymer according to any one of claims 1-9, wherein said polymer has a strain at break at (25° C.; 100/min) of at least 400%.
- 11. The polymer according to any one of claims 1-10, wherein said polymer has a tensile strength (150° C.; 100/min) of at least 15 MPa.
- 12. The polymer according to any one of claims 1-11, wherein said polymer has a comonomer content between 1 and 1.4 wt %.
- 13. The polymer according to any one of claims 1-12, wherein said polymer has a peak melting temperature in the range of 316-319° C.
- 14. The polymer according to any one of claims 1-13, wherein said polymer has a crystallinity in the range of 35-44%.
- 15. The polymer according to any one of claims 1-13, wherein said polymer comprises a co-monomer selected from the group consisting of hexafluoropropylene, perfluoro(methyl vinyl ether), perfluoro(ethyl vinyl ether), perfluoro(propyl vinyl ether), perfluoro-(2,2-dimethyl-1,3-dioxole).
- 16. The polymer according to any one of claims 1-13, wherein said polymer comprises a perfluor(alkyl vinyl ether) co-monomer.
- 17. The polymer according to any one of claims 1-13, wherein said polymer comprises a perfluoro(propyl vinyl ether) co-monomer.
- 18. The polymer according to any one of claims 1-13, wherein said polymer comprises a hexafluoropropylene co-monomer.
- 19. A composition comprising the polymer according to any one of claims 1-18.
- 20. The composition of claim 19, wherein said composition comprises at least 20 wt % of said polymer.
- 21. The composition according to any one of claims 19-20, wherein said composition comprises at least 5 wt % of additives selected from the group consisting of colorants, fillers, reinforcing matter, blowing agents, foaming agents, and electrically conducting matter.
- 22. The composition according to any one of claims 19-21, wherein said composition comprises, titanium dioxide, carbon, graphite, glassfiber, molybdenum, bronze, or stainless steel.
- 23. A blend of two or more poly(tetrafluorethylene) polymers, at least one of said two or more poly(tetrafluorethylene) polymers being a polymer according to any one of claims 1-18.
- 24. An article comprising the polymer according to any one of claims 1-18.
- 25. The article of claim 24, wherein said article is formed at least in part by melt-processing said polymer.
- 26. A method comprising:
melt-processing the polymer according to any one of claims 1-18.
- 27. The method of claim 26, wherein said method includes injection molding, transfer-molding, melt-blowing, melt-extrusion, melt-spinning, and/or blow-molding.
- 28. An article obtained by the method of claim 27.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a Continuation-in-Part of U.S. application Ser. No 09/505,279, filed Feb. 16, 2000, which is itself a Continuation-in-Part of U.S. application Ser. No. 09/369,319, filed Aug. 6, 1999, which claims the benefit of U.S. Provisional Application No. 60/095,583, filed Aug. 6, 1998. All three prior applications are hereby incorporated in their entirety by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60095583 |
Aug 1998 |
US |
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
09505279 |
Feb 2000 |
US |
Child |
10098613 |
Mar 2002 |
US |
Parent |
09369319 |
Aug 1999 |
US |
Child |
09505279 |
Feb 2000 |
US |