Patent US3333029A successfully refreshed from Google Patents.
US3333029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of mixtures of acid esters of phosphoric acids
Assignee: Knapsack AG
•
Filing: 1963-10-01
•
Granted: 1967-07-25
•
Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Muller-Schiedmayer Gunther
- 👤 Harnisch Heinz
- 👤 Cremer Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/098; B; B01; B01J; B01J10/00; B01J10/02; B01J19/00; B01J19/18; B01J19/1812; B01J4/00; B01J4/001; B01J4/002; C07F9/091; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00103; B01J2219/00121; B01J2219/00157; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/0077; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PROCESS FOR THE CONTINUOUS MANUFACTURE OF MIXTURES OF ACID ESTERS OF PHOSPHORIC ACID FROM PHOSPHORUS PENTOXIDE AND AN ORGANIC HYDROXY COMPOUND WHICH COMPRISES CYCLING AN ACID ESTER MIXTURE OF PHOSPHORIC ACIDS THROUGH A REACTION ZONE, AN ABSORPTION ZONE AND A HEAT EXCHANGING ZONE, ABSORBING THE GASEOUS PHOSPHORUS IN THE SAID ESTER MIXTURE WITHIN THE SAID REACTION ZONE AND ABSORPTION ZONE AT TEMPERATURES OF LESS THAN ABOUT 250* C., ADMIXING THE SAID ESTER MIXTURE WITH AN ORGANIC HYDROXY COMPOUND ROH, SAID ROH BEING AN ALIPHATIC ALCOHOL HAVING 1 TO 18 CARBON ATOMS AND WHEREIN THE SUBSTITUENTS APART FROM OH GROUPS ARE INERT TO PHOSPHORUS PENTOXIDE AND WHEREBY THE ROH COMPOUND IS USED IN STOICHIOMETRIC AMOUNTS REFERRED TO THE PHOSPHORUS PENTOXIDE ABSORBED, ADJUSTING THE ROH/P2O5-MOLAR RATIO CORRESPONDING TO THE MOLAR ROH/P2O5 RATIO IN THE FINAL PRODUCT WITHIN THE RANGE OF 3:1 TO 1:1, AND CONTINUOUSLY WITHDRAWING THE SAID FINAL PRODUCT FROM THE CYCLE.
Claim 2
Dependent Claim
152 words
A PROCESS FOR THE CONTINUOUS MANUFACTURE OF MIXTURES OF ACID ESTERS OF PHOSPHORIC ACID FROM PHOSPHORUS PENTOXIDE AND AN ORGANIC HYDROXY COMPOUND WHICH COMPRISES CYCLING AN ACID ESTER MIXTURE OF PHOSPHORIC ACIDS THROUGH A REACTION ZONE, AN ABSORPTION ZONE AND A HEAT EXCHANGING ZONE, ABSORBING THE GASEOUS PHOSPHORUS IN THE SAID ESTER MIXTURE WITHIN THE SAID REACTION ZONE AND ABSORPTION ZONE AT TEMPERATURES OF LESS THAN ABOUT 250* C., ADMIXING THE SAID ESTER MIXTURE WITH AN ORGANIC HYDROXY COMPOUND ROH, SAID ROH BEING AN ALIPHATIC ALCOHOL HAVING 1 TO 18 CARBON ATOMS AND WHEREIN THE SUBSTITUENTS APART FROM OH GROUPS ARE INERT TO PHOSPHORUS PENTOXIDE AND WHEREBY THE ROH COMPOUND IS USED IN STOICHIOMETRIC AMOUNTS REFERRED TO THE PHOSPHORUS PENTOXIDE ABSORBED, ADJUSTING THE ROH/P2O5-MOLAR RATIO CORRESPONDING TO THE MOLAR ROH/P2O5 RATIO IN THE FINAL PRODUCT WITHIN THE RANGE OF 3:1 TO 1:1, AND CONTINUOUSLY WITHDRAWING THE SAID FINAL PRODUCT FROM THE CYCLE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |