US2998407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric compositions
Assignee: Ethyl Corp
•
Filing: 1956-12-17
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Granted: 1961-08-29
•
Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Walter E Foster
- 👤 Paul E Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:51
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14; C08G77/00; C08G77/48; C08G77/58; C08G79/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE PRODUCT OBTAINED BY REACTING AT FEFLUX TEMPERATURE IN AN INERT SOLVENT, (1) A MONOVALENT DIHYDROCARBON SUBSTITUTED SILANE, WHEREIN THE HYDROCARBON GROUP IS BONDED TO THE SILICON OF THE SILANE BY CARBON TO SILICON BONDING, AND THE REMAINING VALENCES OF THE SILANE ARE DIRECTLY CONNECTED TO GROUPS FROM THE CLASS CONSISTING OF HYDROXYL HALOGEN, ALKOXY, ALKALI METALLOOXY AND AMINE WITH (2) A TETRAVALENT TIN COMPOUND, WHEREIN AT LEAST TWO OF THE VALENCES OF THE TIN ARE CONNECTED DIRECTLY TO FINTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF OXIDE, HYDROXYL, ALKOXY, HALEGEN AND AMINE, AND THE REMAINING VALENCES OF THE TIN ARE BONDED TO AT LEAST ONE MONOVALENT HYDROCARBON GROUP BY CARBON TO TIN BONDING, THE REACTION BEING CARRIED OUT UNDER CONDITIONS CAPABLE OF CAUSING THE SILANE ALONE TO CONDENSE TO A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILOXANES AND SILAZANES.
Claim 2
Dependent Claim
141 words
THE PRODUCT OBTAINED BY REACTING AT FEFLUX TEMPERATURE IN AN INERT SOLVENT, (1) A MONOVALENT DIHYDROCARBON SUBSTITUTED SILANE, WHEREIN THE HYDROCARBON GROUP IS BONDED TO THE SILICON OF THE SILANE BY CARBON TO SILICON BONDING, AND THE REMAINING VALENCES OF THE SILANE ARE DIRECTLY CONNECTED TO GROUPS FROM THE CLASS CONSISTING OF HYDROXYL HALOGEN, ALKOXY, ALKALI METALLOOXY AND AMINE WITH (2) A TETRAVALENT TIN COMPOUND, WHEREIN AT LEAST TWO OF THE VALENCES OF THE TIN ARE CONNECTED DIRECTLY TO FINTIONAL GROUPS SELECTED FROM THE CLASS CONSISTING OF OXIDE, HYDROXYL, ALKOXY, HALEGEN AND AMINE, AND THE REMAINING VALENCES OF THE TIN ARE BONDED TO AT LEAST ONE MONOVALENT HYDROCARBON GROUP BY CARBON TO TIN BONDING, THE REACTION BEING CARRIED OUT UNDER CONDITIONS CAPABLE OF CAUSING THE SILANE ALONE TO CONDENSE TO A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILOXANES AND SILAZANES.
References Cited (Backward Citations)
US2818906A
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US2413184A
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US2713585A
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US2762821A
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US2814601A
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US2843555A
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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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |