US3042697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making phosphorus acid esters
Assignee: Gulf Research and Development Co
•
Filing: 1958-10-28
•
Granted: 1962-07-03
•
Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert E Halter
- 👤 Robert J Hartle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/16; C07F9/28; C07F9/38; C07F9/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A CONTINUOUS PROCESS FOR THE PREPARING OF ESTERS OF PHOSPHORUS WHICH COMPRISES PASSING A PHOSPHORUS CONTAINING COMPOUND SELECTED FROM COMPOUNDS HAVING THE FOLLLOWING STRUCTURAL FORMULA: AND FIG-01 WHEREIN X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE; Y AND Z ARE SELECTED FROM THE GROUP CONSISTING OF HALOGEN, A HYDROCARBON RADICAL AND -OR, WHEREIN R IS A HYDROCARBON RADICAL; AND A IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR DOWNWARDLY THROUGH A COLUMN CONTAINING PACKING MATERIAL, PASSING VAPOR OF AN ALCOHOL UPWARDLY THROUGH SAID COLUMN, MAINTAINING TEMPERATURE AND PRESSURE CONDUCTIVE TO THE REACTION BETWEEN SAID PHOSPHORUS-CONTAINING COMPOUND AND SAID ALCOHOL IN SAID COLUMN, AND THEREAFTER OBTAINING AN ESTER OF PHOSPHORUS ADJACENT THE BASE OF SAID COLUMN.
Claim 2
Dependent Claim
122 words
A CONTINUOUS PROCESS FOR THE PREPARING OF ESTERS OF PHOSPHORUS WHICH COMPRISES PASSING A PHOSPHORUS CONTAINING COMPOUND SELECTED FROM COMPOUNDS HAVING THE FOLLLOWING STRUCTURAL FORMULA: AND FIG-01 WHEREIN X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE; Y AND Z ARE SELECTED FROM THE GROUP CONSISTING OF HALOGEN, A HYDROCARBON RADICAL AND -OR, WHEREIN R IS A HYDROCARBON RADICAL; AND A IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR DOWNWARDLY THROUGH A COLUMN CONTAINING PACKING MATERIAL, PASSING VAPOR OF AN ALCOHOL UPWARDLY THROUGH SAID COLUMN, MAINTAINING TEMPERATURE AND PRESSURE CONDUCTIVE TO THE REACTION BETWEEN SAID PHOSPHORUS-CONTAINING COMPOUND AND SAID ALCOHOL IN SAID COLUMN, AND THEREAFTER OBTAINING AN ESTER OF PHOSPHORUS ADJACENT THE BASE OF SAID COLUMN.
References Cited (Backward Citations)
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |