US2626273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkoxy hydrosilanes
Assignee: Dow Chemical Co
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Filing: 1947-11-05
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Granted: 1953-01-20
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Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hunter
- 👤 Philip C Servais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:07
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE METHOD OF MAKING ALKOXY HYDROSILANES WHICH COMPRISES REACTING A SILANE ESTER HAVING THE FORUMLA R4-NSI(OR'')N, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS, R'' IS AN ALKYL RADICAL, AND N IS A POSITIVE INTEGER FROM 1 TO 4, IN LIQUID PHASE IN THE PRESENCE OF FREE ACID, WITH A SILANE HAVING BONDED TO THE SILICON ONE HYDROGEN SUBSTITUENT AND AT LEAST ONE CHLORINE SUBSTITUENT, THE REMAINING SILICON BONDS, IF ANY, BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS, WHEREBY INTERCHANGE IS ACCOMPLISHED BETWEEN AT LEAST ONE ALKOXY RADICAL OF THE SILANE ESTER AND A CHLORINE ATOM OF THE SILANE.
Claim 2
Independent Claim
113 words
THE METHOD OF MAKING ALKOXY HYDROSILANES WHICH COMPRISES REACTING A SILANE ESTER HAVING THE FORUMLA R4-NSI(OR'')N, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS, R'' IS AN ALKYL RADICAL, AND N IS A POSITIVE INTEGER FROM 1 TO 4, IN LIQUID PHASE IN THE PRESENCE OF FREE ACID, WITH A SILANE HAVING BONDED TO THE SILICON ONE HYDROGEN SUBSTITUENT AND AT LEAST ONE CHLORINE SUBSTITUENT, THE REMAINING SILICON BONDS, IF ANY, BEING SATISFIED BY MONOVALENT HYDROCARBON RADICALS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL RADICALS, WHEREBY INTERCHANGE IS ACCOMPLISHED BETWEEN AT LEAST ONE ALKOXY RADICAL OF THE SILANE ESTER AND A CHLORINE ATOM OF THE SILANE.
References Cited (Backward Citations)
US2421653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |