Patent US2574265A successfully refreshed from Google Patents.
US2574265A
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Separation of organosilicon materials
Assignee: Corning Glass Works
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Filing: 1945-11-15
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Granted: 1951-11-06
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Expires: 1965-11-15
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:40
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/20; C08G77/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF PURIFYING DIMETHYL SILICON DICHLORIDE CONTAINING IN MINOR PROPORTION MONOMETHYL SILICON TRICHLORIDE, WHICH COMPRISES REACTING THE MIXED CHLORIDES WITH AQUEOUS SODIUM HYDROXIDE, THE WATER BEING PRESENT IN QUANTITY SUFFICIENT TO HYDROLYZE THE CHLORIDES WITH THE PRODUCTION OF HYDROGEN CHLORIDE AND THE SODIUM BYDROXIDE BEING PRESENT IN QUANTITY OF NEUTRALIZE THE HYDROGEN CHLORIDE PRODUCED TOGETHER WITH BETWEEN 1 AND 2 MOLS. OF SODIUM HYDROXIDE PER MOL. OF MONOMETHYL SILICON TRICHLORIDE ORIGINALLY PRESENT, AND SEPARATING THE SALTS SO FORMED FROM THE DIMETHYL SILICON HYDROLYZATE.
Claim 2
Independent Claim
84 words
THE METHOD OF PURIFYING DIMETHYL SILICON DICHLORIDE CONTAINING IN MINOR PROPORTION MONOMETHYL SILICON TRICHLORIDE, WHICH COMPRISES REACTING THE MIXED CHLORIDES WITH AQUEOUS SODIUM HYDROXIDE, THE WATER BEING PRESENT IN QUANTITY SUFFICIENT TO HYDROLYZE THE CHLORIDES WITH THE PRODUCTION OF HYDROGEN CHLORIDE AND THE SODIUM BYDROXIDE BEING PRESENT IN QUANTITY OF NEUTRALIZE THE HYDROGEN CHLORIDE PRODUCED TOGETHER WITH BETWEEN 1 AND 2 MOLS. OF SODIUM HYDROXIDE PER MOL. OF MONOMETHYL SILICON TRICHLORIDE ORIGINALLY PRESENT, AND SEPARATING THE SALTS SO FORMED FROM THE DIMETHYL SILICON HYDROLYZATE.
References Cited (Backward Citations)
US2389804A
Cited
US2388575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |