US2985678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tert-alkyl alkoxy silanes and preparation thereof
Assignee: Ethyl Corp
•
Filing: 1957-11-27
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Granted: 1961-05-23
•
Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Cecil C Chappelow
- 👤 Jr John T Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0898; C07F7/0801; C07F7/18; C07F7/1804; C08; C08G; C08G77/00; C08G77/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A PROCESS WHICH COMPRISERS REACTING, AT A TEMPERATURE BETWEEN ABOUT 90 TO 200*C., AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM, A TERTIARY LOWER ALKYL HALIDE AND AN ORGANIC ESTER OF SILICON SELECTED FROM THE GROUP CONSISTING OF TRIALKOXY, TETRAALKOXY, TRIARYLOXY, TETRA-ARYLOXY, TRIALKYL THIO, TETRA-ALKYL THIO, TRIARYL THIO AND TETRA-ARYL THIO SILANES, SAID TERTIARY ALKYL HALIDE BEING FURTHER DEFINED AS HAVING SAID HALIDE LINKED DIRECTLY TO THE TERTIARY CARBON ATOM, THE ORGANIC PORTION OF SAID ORGANIC ESTER BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL HYDROCARBON GROUPS, AND SUBSTITUTED ALKYL AND ARYL HYDROCARBON GROUPS, THE SUBSTITUENTS OF SAID SUBSTITUTED HYDROCARBON GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF ALKOXY, ARYLOXY, ALKYL THIO, ARYL THIO, DIALKYL AMINO AND TRIALKYL SILYL GROUPS.
Claim 2
Dependent Claim
126 words
A PROCESS WHICH COMPRISERS REACTING, AT A TEMPERATURE BETWEEN ABOUT 90 TO 200*C., AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM, A TERTIARY LOWER ALKYL HALIDE AND AN ORGANIC ESTER OF SILICON SELECTED FROM THE GROUP CONSISTING OF TRIALKOXY, TETRAALKOXY, TRIARYLOXY, TETRA-ARYLOXY, TRIALKYL THIO, TETRA-ALKYL THIO, TRIARYL THIO AND TETRA-ARYL THIO SILANES, SAID TERTIARY ALKYL HALIDE BEING FURTHER DEFINED AS HAVING SAID HALIDE LINKED DIRECTLY TO THE TERTIARY CARBON ATOM, THE ORGANIC PORTION OF SAID ORGANIC ESTER BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL HYDROCARBON GROUPS, AND SUBSTITUTED ALKYL AND ARYL HYDROCARBON GROUPS, THE SUBSTITUENTS OF SAID SUBSTITUTED HYDROCARBON GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF ALKOXY, ARYLOXY, ALKYL THIO, ARYL THIO, DIALKYL AMINO AND TRIALKYL SILYL GROUPS.
Claim 3
Dependent Claim
32 words
AS NEW COMPOSITIONS OF MATTER TERTIARY ALKYL ALKOXY SILANCES, CONTAINING 2 THROUGH 3 ALKOXY GROUPS, WHEREIN SAID ALKOXY GROUPS COMPRISE LONG-CHAIN HYDROCARBON GROUPS CONTAINING FROM ABOUT 10 THROUGH ABOUT 20 CARBON ATOMS.
Claim 4
Dependent Claim
32 words
AS NEW COMPOSITIONS OF MATTER TERTIARY ALKYL ALKOXY SILANCES, CONTAINING 2 THROUGH 3 ALKOXY GROUPS, WHEREIN SAID ALKOXY GROUPS COMPRISE LONG-CHAIN HYDROCARBON GROUPS CONTAINING FROM ABOUT 10 THROUGH ABOUT 20 CARBON ATOMS.
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |