Plexifilimentary cellulose strand
Abstract
Abstract Textile products are disclosed comprising an assembly of fibrils in the form of a plexifilament, yarn, fabric or the like. The fibrils are of irregular cross-section and are composed of regenerated cellulose or cellulose acetate having a degree of substitution of between about 2.0 and 2.6. Most fibrils are interconnected to form a plexus. The products are stable to repeated water exposure and have a specific surface of at least about 0.4 square meter per gram and a fibril concentration of at least about 50 X 103 per square centimeter. The products have a water absorption rate of greater than about 0.1 milliliter per second and are useful in textile applications, particularly where good, stable water-absorption characteristics are desirable.
Inventors
- 👤 J Berkowitch
Bibliographic Details
Claims Analysis
Total Claims: 5References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |