US2929833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing phenyl dimethyl phosphates
Assignee: Ethyl Corp
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Filing: 1958-04-23
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Granted: 1960-03-22
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Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Harold D Orloff
- 👤 Francis X Markley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:25
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/2641; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS OF PREPARING PHENYL DIMETHYL PHOSPHATES CHARACTERIZED BY INTRODUCING INTO METHANOL A PHENYL PHOSPHORODICHLORIDATE HAVING UP TO 3 METHYL GROUPS AND UP TO 1 CHLORINE ATOM ATTACHED TO THE PHENYL RING, THERE BEING PRESENT THROUGHOUT THE ENTIRE REACTION PERIOD FROM 4 TO 8 MOLES OF METHANOL PER MOLE OF THE DICHLORIDATE SO INTRODUCED WHILE KEEPING THE TEMPERATURE OF THE REACTION MIXTURE THROUGHOUT THE ENTIRE REACTION PERIOD AT 15 TO 60*C., QUENCHING THE REACTION MIXTURE WITH WATER, SEPARATING THE AQUEOUS AND ORGANIC PHASES AND THEN RECOVERING THE PHOSPHATE FROM THE ORGANIC PHASE.
Claim 2
Dependent Claim
92 words
A PROCESS OF PREPARING PHENYL DIMETHYL PHOSPHATES CHARACTERIZED BY INTRODUCING INTO METHANOL A PHENYL PHOSPHORODICHLORIDATE HAVING UP TO 3 METHYL GROUPS AND UP TO 1 CHLORINE ATOM ATTACHED TO THE PHENYL RING, THERE BEING PRESENT THROUGHOUT THE ENTIRE REACTION PERIOD FROM 4 TO 8 MOLES OF METHANOL PER MOLE OF THE DICHLORIDATE SO INTRODUCED WHILE KEEPING THE TEMPERATURE OF THE REACTION MIXTURE THROUGHOUT THE ENTIRE REACTION PERIOD AT 15 TO 60*C., QUENCHING THE REACTION MIXTURE WITH WATER, SEPARATING THE AQUEOUS AND ORGANIC PHASES AND THEN RECOVERING THE PHOSPHATE FROM THE ORGANIC PHASE.
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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |