Claims
- 1. A sorbent multifilament textile yarn comprising filaments each of a denier in the range between 2 and 30 and a diameter between 0.001 and 0.01 inch, each filament consisting essentially of a hollow polymeric sheath having a microporous wall, the polymer of said sheath having voids therein that are mutually interconnected, said sheath having a central lumen, and a core of active sorbent material in said lumen, said microporous wall being permeable to organic liquids and vapors passing between the exterior of the sheath and said core.
- 2. A yarn according to claim 1, in which the sorbent material is selected from the group comprising activated carbon, silica gel and molecular sieve type materials.
- 3. A yarn according to claim 1, in which the sorbent material comprises activated carbon in an amount comprising between 20 and 70 percent by weight of the fiber.
- 4. A yarn according to claim 1, in which the polymeric sheath comprises polypropylene.
- 5. A yarn according to claim 1 which is cold drawn.
- 6. A yarn according to claim 1 in which the polymeric sheath comprises polypropylene, the yarn being cold drawn.
Parent Case Info
This is a continuation of application Ser. No. 014,071, filed Feb. 22, 1979, now abandoned.
BRIEF SUMMARY OF THE INVENTION
The invention described herein was made in the course of work under a grant or award from The Department of the Army.
US Referenced Citations (14)
Non-Patent Literature Citations (2)
Entry |
Williams, M. C. et al., "Phase Separation Spinning of Polypropylene", SPE Journal, Oct. 1972, vol. 28, pp. 51-53. |
Klein, E. et al., "Preparation of High Clearance Sorbent-Filled Hollow Fibers", Gulf South Research Institute, Jul. 19, 1977. |
Continuations (1)
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Number |
Date |
Country |
Parent |
14071 |
Feb 1979 |
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