Claims
- 1. A process to make a conductive fluorinated polymer composition wherein:
a) an aqueous solution of an anilinium salt is mixed with an aqueous dispersion of a fluorinated polymer, b) an oxidant for polymerizing the anilinium salt is added to the mixture of step a) to make a blend of said fluorinated polymer and resultant doped polyaniline (PANI), c) by-products and unreacted aniline are removed by washing with water or an alcohol to obtain a blend of purified fluorinated polymer and doped PANI, d) optionally the purified fluorinated polymer and doped PANI of step c) are mixed with an acid, e) water is removed from the purified fluorinated polymer and doped PANI of step c) or d) if any to obtain a powder.
- 2. A process according to claim 1 wherein the fluorinated polymer is selected from the group consisting of vinylidene fluoride (VF2) homopolymers and copolymers containing at least 50% by weight of VF2, the copolymer being chosen from chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), trifluoroethylene (VF3) and tetrafluoroethylene (TFE).
- 3. A process according to claim 1 wherein the anilinium salt is produced by reacting an aniline with an acid selected from the group consisting of acids of formula (2) A-R3 and (3)
- 4. A process according to claim 1 wherein the oxidant is selected from the group consisting of ammonium persulfate, potassium persulfate or sodium persulfate.
- 5. A process according to claim 3, comprising step (d) and wherein the acid in step d) is the same as the one used to make the anilinium salt of step a).
- 6. A process according to claim 1, further comprising melting and shaping the powder of step e).
- 7. A process according to claim 3, wherein the oxidant is selected from the group consisting of ammonium persulfate, potassium persulfate or sodium persulfate.
- 8. In a process for producing a conductive fluorinated polymer composition, the steps wherein:
a) an aqueous solution of an anilinium salt is mixed with an aqueous dispersion of a fluorinated polymer, b) an oxidant for polymerizing the anilinium salt is added to the mixture of step a) to make a blend of said fluorinated polymer and resultant doped polyaniline (PANI).
- 9. A process according to claim 1, wherein the oxidant is water-soluble.
- 10. A process according to claim 8, wherein the oxidant is water-soluble.
- 11. A process according to claim 10, wherein the oxidant is selected from the group consisting of ammonium persulfate, potassium persulfate or sodium persulfate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
02293103.4 |
Dec 2002 |
EP |
|
Parent Case Info
[0001] This application claims the benefit of the filing date of U.S. Provisional Applications Serial No. 60/435,256 filed Dec. 23, 2002.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60435256 |
Dec 2002 |
US |