US3763077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the anionic polymerization of epsilon caprolactam in the presence of a plasticizer
Assignee: Motors Liquidation Co
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Filing: 1971-02-22
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Granted: 1973-10-02
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Expires: 1991-02-22
Abstract
Abstract LOW TEMPERATURE ANIONIC POLYMERIZATION OF EPSILONCAPROLACTAM, USING POLYMETHYLENE POLYPHENYL ISOCYANATE AS COCATALYST, IS CONDUCTED IN THE PRESENCE OF CERTAIN POLYOXYALKYLENE POLYOL PLASTICIZERS TO FORM A PLASTICIZED, RELATIVELY HIGH IMPACT STRENGTH NYLON-6.
Inventors
- 👤 E Eusebi
- 👤 J Nowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:12
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |