Claims
- 1. A filament of fiber comprising regenerated cellulose containing particles of refractory material, wherein the weight ratio of said refractory material to said cellulose is greater than about 1:4, wherein said refractory material comprises piezoelectric material.
- 2. The filament of claim 1, wherein said cellulose is stretched.
- 3. The filament of claim 2, Wherein said cellulose is stretched from about 32% to about 128%.
- 4. The filament of claim 1, wherein said ratio is greater than about 7:3.
- 5. The filament of claim 4, wherein said ratio is greater than about 4:1.
- 6. The filament of claim 1, wherein said filament has a diameter corresponding to the diameter of a stream of cellulose xanthate spun from a spinneret having an opening with a diameter of about 18 to about 400μ and fed into a 53° C. bath composed of 7.5% by weight of H2SO4, 22.0% by weight of Na2SO4, and the remainder deionized water.
- 7. The filament of claim 1, wherein said filament has a diameter of about 28 to about 45μ.
- 8. A filament of regenerated cellulose containing ceramic particles, said filament being formed from a process comprising the steps of:preparing a spin mix of a solution of cellulose and ceramic particles, wherein the weight ratio of ceramic particles to cellulose is about 4:1, said ceramic particles comprising piezoelectric material; wet spinning said spin mix through a spinneret to form a stream; and extracting the solvent of the solution of cellulose from said stream to form said filament of regenerated cellulose containing said ceramic particles.
- 9. The filament of claim 8, wherein extracting said solvent reduces the diameter of said stream.
- 10. The filament of claim 8, wherein said solution of cellulose is viscose.
- 11. The filament of claim 8, wherein said filament is prepared using a lyocell process.
- 12. The filament of claim 8, wherein said filament has one or more defined properties selected from current carrying capacity, range of physical or mechanical properties, electrochemical properties, electrorestrictive properties or other property which is substantially the same as the corresponding property of said ceramic particles from which said filament is formed.
- 13. The filament of claim 8, wherein extracting said solvent comprises dehydration.
REFERENCE TO RELATED APPLICATION
This application is a division of U.S. application Ser. No. 08/707,170, filed Aug. 30, 1996, now U.S. Pat. No. 5,827,797, which is a continuation-in-part of U.S. application Ser. No. 08/470,291, filed Jun. 6, 1995, now abandoned, which is a continuation-in-part of U.S. application Ser. No. 08/197,673, filed Feb. 17, 1994, now abandoned, which is a continuation of U.S. application Ser. No. 07/914,996, filed Jul. 16, 1992, now abandoned, which, in turn, is a continuation of application Ser. No. 07/580,132, filed on Sep. 10, 1990, now abandoned, which is a continuation-in-part of U.S. application Ser. No. 07/398,895, filed Aug. 28, 1989, now abandoned. All of the above-identified applications are hereby incorporated by reference.
US Referenced Citations (5)
Number |
Name |
Date |
Kind |
4776895 |
Goldstein |
Oct 1988 |
A |
4908340 |
Frechette et al. |
Mar 1990 |
A |
5358679 |
Parekh et al. |
Oct 1994 |
A |
5656073 |
Glaubitt et al. |
Aug 1997 |
A |
5985301 |
Nakamura et al. |
Nov 1999 |
A |
Continuations (2)
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Number |
Date |
Country |
Parent |
07/914996 |
Jul 1992 |
US |
Child |
08/197673 |
|
US |
Parent |
07/580132 |
Sep 1990 |
US |
Child |
07/914996 |
|
US |
Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
08/470291 |
Jun 1995 |
US |
Child |
08/707170 |
|
US |
Parent |
08/197673 |
Feb 1994 |
US |
Child |
08/470291 |
|
US |
Parent |
07/398895 |
Aug 1989 |
US |
Child |
07/580132 |
|
US |