US3322731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of caprolactam, hexamethylene diamine, adipic acid and sebacic acid
Assignee: EIDP Inc
•
Filing: 1963-04-23
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Granted: 1967-05-30
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Cook Donald Bowker
- 👤 Lange Ronald Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:41
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; D; D01; D01F; D01F6/00; D01F6/78; D01F6/80; Y; Y10; Y10S; Y10S264/00; Y10S264/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN ORIENTED FILAMNENT CONSISTING ESSENTIALLY OF AN INTERPOLYMER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: (1) THE COPOLYMER OF FROM 10% TO 20% OF E-AMINO CAPROIC ACID AND FROM 80% TO 90% OF HEXAMETHYLENE DIAMMONIUM DIPATE, AND (2) THE TERPOLYMER OF FROM 5% TO 20% OF E-AMINO CAPROIC ACID, UP TO 20% OF HEXAMETHYLENE DIAMMONIUM SEBACATE AND FROM 75% TO 90% OF HEXAMETHYLENE DIAMMONIUM ADIPATE, ALL PERCENTAGES EXPRESSED BEING BY WEIGHT, THE SAID FILAMENT BEING CHARACTERIZED BY A SHRINKAGE TENSION TO SHRINKAGE RATIO OF LESS THAN 0.7 AND A BOIL-OFF SHRINKAGE OF 8-15%, WHEREIN THE SHRINKAGE TENSION IS DETERMINED BY IMMERSING A GIVEN LENGTH OF YARN INTO WATER AT A TEMPERATURE OF 90*C.$1*C. FOR ABOUT FIVE MINUTES RESTRAINING THE YARN TO PREVENT SHRINKAGE, WITHDRAWDRAWING THE SAMPLE AND ALLOWING IT TO DRY AT ROOM TEMPERATURE FOR ABOUT FIVE MINUTES, AND MEASURING THE YARN TENSION IN GRAMS/DENIER.
Claim 2
Dependent Claim
145 words
AN ORIENTED FILAMNENT CONSISTING ESSENTIALLY OF AN INTERPOLYMER COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: (1) THE COPOLYMER OF FROM 10% TO 20% OF E-AMINO CAPROIC ACID AND FROM 80% TO 90% OF HEXAMETHYLENE DIAMMONIUM DIPATE, AND (2) THE TERPOLYMER OF FROM 5% TO 20% OF E-AMINO CAPROIC ACID, UP TO 20% OF HEXAMETHYLENE DIAMMONIUM SEBACATE AND FROM 75% TO 90% OF HEXAMETHYLENE DIAMMONIUM ADIPATE, ALL PERCENTAGES EXPRESSED BEING BY WEIGHT, THE SAID FILAMENT BEING CHARACTERIZED BY A SHRINKAGE TENSION TO SHRINKAGE RATIO OF LESS THAN 0.7 AND A BOIL-OFF SHRINKAGE OF 8-15%, WHEREIN THE SHRINKAGE TENSION IS DETERMINED BY IMMERSING A GIVEN LENGTH OF YARN INTO WATER AT A TEMPERATURE OF 90*C.$1*C. FOR ABOUT FIVE MINUTES RESTRAINING THE YARN TO PREVENT SHRINKAGE, WITHDRAWDRAWING THE SAMPLE AND ALLOWING IT TO DRY AT ROOM TEMPERATURE FOR ABOUT FIVE MINUTES, AND MEASURING THE YARN TENSION IN GRAMS/DENIER.
References Cited (Backward Citations)
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Cited
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Cited
US3003222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |