US3410831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionic process for preparing reinforced polylactam in the presence of a coupling agent and a tetraalkyl orthosilicate
Assignee: Monsanto Co
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Filing: 1964-02-10
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Granted: 1968-11-12
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Ross M Hedrick
- 👤 Paul A Tierney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C08F; C08F2/00; C08F2/44; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18; C08K3/00; C08K3/34; C08K5/541; C08K5/5415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PREPARING REINFORCED POLYLACTAM COMPRISING CONDUCTING A BASE-CATALYZED, SUBSTANTIALLY ANHYDROUS POLYMERIZATION OF A LACTAM IN THE PRESENCE OF AN INORGANIC REINFORCING AGENT, A COUPLING AGENT CONTAINING AT LEAST ONE GROUP CAPABLE OF REACTING WITH THE LACTAM DURING POLYMERIZATION AND AT LEAST ONE GROUP CAPABLE OF REACTING WITH SAID INORGANIC REINFORCING AGENT, AND A TETRAALKYL ORTHOSILICATE.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PREPARING REINFORCED POLYLACTAM COMPRISING CONDUCTING A BASE-CATALYZED, SUBSTANTIALLY ANHYDROUS POLYMERIZATION OF A LACTAM IN THE PRESENCE OF AN INORGANIC REINFORCING AGENT, A COUPLING AGENT CONTAINING AT LEAST ONE GROUP CAPABLE OF REACTING WITH THE LACTAM DURING POLYMERIZATION AND AT LEAST ONE GROUP CAPABLE OF REACTING WITH SAID INORGANIC REINFORCING AGENT, AND A TETRAALKYL ORTHOSILICATE.
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |