Patent US3584074A successfully refreshed from Google Patents.
US3584074A
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Fibrous materials from polyethylene terephthalate polyether copolymer and polyamide
Assignee: Teijin Ltd
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Filing: 1968-11-01
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Granted: 1971-06-08
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Expires: 1988-11-01
Abstract
Abstract A FIBROUS MATERIAL HAVING IMPROVED DYEABILITY AND GOOD ANTI-PILLING PROPERTIES COMPRISING (A) 90 TO 70 PARTS BY WEIGHT OF A MODIFIED POLYETHYLENE TEREPHTHALATE COPOLYMERIZED WITH 2 TO 7% BY WEIGHT OF A POLYOXYETHYLENE GROUP OF AN AVERAGE MOLECULAR WEIGHT OF 600 TO 6,000 AND (B) 10 TO 30 PARTS BY WEIGHT OF A LINEAR POLYAMIDE CONTAINING 5 TO 60 MOL PERCENT OF AN AROMATIC RADICAL, BASED ON THE AMIDE BOND. SUCH FIBROUS MATERIAL IS CHARACTERIZED IN THAT THE RATIO OF THE REDUCED VISCOSITY OF THE MODIFIED POLYETHYLENE TEREPHTHALATE TO THE REDUCED VISCOSITY OF THE LINEAR POLYAMIDE IS 0.8-0:1 AND THAT EACH OF THE COMPONENTS CONSTITUTES A SEPARATE PHHASE IN THE BLEND.
Inventors
- 👤 Takeo Shima
- 👤 Masataka Oshima
- 👤 Shiro Shimauchi
- 👤 Takeshi Matsui
- 👤 Shoji Kawase
- 👤 Norihiro Minemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:48
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C08G69/00; C08G69/02; C08G69/36; C08L; C08L67/00; C08L67/02; C08L67/025; D; D01; D01F; D01F6/00; D01F6/88; D01F6/92; D01F8/00; D01F8/04; D01F8/14; C08L77/00; C08L77/02
Claims Analysis
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References 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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |