US2700675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing monomeric organotin dialkoxides
Assignee: Advance Solvents and Chemical Corp
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Filing: 1950-07-12
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Granted: 1955-01-25
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Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Gerry P Mack
- 👤 Parker Emery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C07; C07F; C07F7/00; C07F7/22; C07F7/2224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PREPARING SUBSTANTIALLY HALOGEN-FREE COMPOSITIONS CONTAINING MONOMERIC DIALKYL TIN DIALKOXIDES FROM DIALKYL TIN DIHALIDES COMPRISING THE STEPS OF CAUSING A DIALKYL TIN DIHALIDE TO REACT UNDER ANHYDROUS CONDITIONS AT A TEMPERATURE BELOW 20*C. WITH SUBSTANTIALLY THE STOICHIOMETRIC AMOUNT OF AN ALKALI METAL ALCOHOLATE OF AN ALCOHOL HAVING NOT MORE THAN 4 C ATOMS, REMOVING THE PRECIPITATED ALKALI HALIDE, AND DISTILLING OFF THE SOLVENT AT REDUCED PERSSURE UNDER COMPLETELY DRY CONDITIONS.
Claim 2
Dependent Claim
72 words
A PROCESS FOR PREPARING SUBSTANTIALLY HALOGEN-FREE COMPOSITIONS CONTAINING MONOMERIC DIALKYL TIN DIALKOXIDES FROM DIALKYL TIN DIHALIDES COMPRISING THE STEPS OF CAUSING A DIALKYL TIN DIHALIDE TO REACT UNDER ANHYDROUS CONDITIONS AT A TEMPERATURE BELOW 20*C. WITH SUBSTANTIALLY THE STOICHIOMETRIC AMOUNT OF AN ALKALI METAL ALCOHOLATE OF AN ALCOHOL HAVING NOT MORE THAN 4 C ATOMS, REMOVING THE PRECIPITATED ALKALI HALIDE, AND DISTILLING OFF THE SOLVENT AT REDUCED PERSSURE UNDER COMPLETELY DRY CONDITIONS.
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) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |