US3386943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing lactams in the presence of filler or reinforcing agent
Assignee: Monsanto Co
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Filing: 1964-11-24
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Granted: 1968-06-04
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ross M Hedrick
- 👤 Paul A Tierney
- 👤 Jr William R Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:49
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18; C08K; C08K9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A PROCESS FOR CONDUCTING A BASE-CATALYZED, SUBSTANTIALLY ANHYDROUS LACTAM POLYMERIZATION IN THE PRESENCE OF A FILLER OR REINFORCING AGENT HAVING HYDROXYL GROUPS PRESENT ON ITS SURFACE, SAID FILLER OR REINFORCING AGENT BEING PRESENT IN A QUANTITY SUFFICIENT TO PROVIDE A FINISHED COMPOSITION CONTAINING FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF SAID FILLER OR REINFORCING AGENT, THE IMPROVEMENT COMPRISING USING SUFFICIENT CATALYST BOTH TO REACT WITH SUBSTANTIALLY ALL SAID HYDROXYL GROUPS AND TO CATALYZE THE POLYMERIZATION IN COMBINATION WITH AN ORGANOSILANE OF THE FORMULA
Claim 2
Dependent Claim
86 words
IN A PROCESS FOR CONDUCTING A BASE-CATALYZED, SUBSTANTIALLY ANHYDROUS LACTAM POLYMERIZATION IN THE PRESENCE OF A FILLER OR REINFORCING AGENT HAVING HYDROXYL GROUPS PRESENT ON ITS SURFACE, SAID FILLER OR REINFORCING AGENT BEING PRESENT IN A QUANTITY SUFFICIENT TO PROVIDE A FINISHED COMPOSITION CONTAINING FROM ABOUT 5 TO ABOUT 95% BY WEIGHT OF SAID FILLER OR REINFORCING AGENT, THE IMPROVEMENT COMPRISING USING SUFFICIENT CATALYST BOTH TO REACT WITH SUBSTANTIALLY ALL SAID HYDROXYL GROUPS AND TO CATALYZE THE POLYMERIZATION IN COMBINATION WITH AN ORGANOSILANE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |