US2862948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dialkyl hydrogen phosphites
Assignee: Virginia Carolina Chemical Corp
•
Filing: 1953-09-22
•
Granted: 1958-12-02
•
Expires: 1973-09-22
Abstract
No abstract record available.
Inventors
- 👤 Mangham Jesse Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:03
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
PROCESS FOR THE PRODUCTION OF A DIALKYL HYDROGEN PHOSPHITE WHICH COMPRISES REACTING AN ALCOHOL CONTAINING FROM 1 TO 3 CARBON ATOMS WITH PCL3 IN THE PRESENCE OF A VOLUME OF AN INERT SOLVENT WHICH IS AT LEAST 5 TIMES THE SUM OF THE VOLUMES OF THE ALCOHOL AND THE PCL3, SAID SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF HEXANE, COMMERCIAL TETRADECANE HAVING A BOILING RANGE OF FROM 238*C. TO 250*C., MINERAL OIL HAVING A BOILING RANGE OF FROM 380*C. TO 450*C., PORAFFIN OIL HAVING A BOILING RANGE OF FROM 317*C. TO 360*C. AND HEXYL ETHER, AND MAINTAINING THE REACTION MIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM 5*C. TO 50*C. BY EXTERANL REFRIGERATION.
Claim 2
Dependent Claim
114 words
PROCESS FOR THE PRODUCTION OF A DIALKYL HYDROGEN PHOSPHITE WHICH COMPRISES REACTING AN ALCOHOL CONTAINING FROM 1 TO 3 CARBON ATOMS WITH PCL3 IN THE PRESENCE OF A VOLUME OF AN INERT SOLVENT WHICH IS AT LEAST 5 TIMES THE SUM OF THE VOLUMES OF THE ALCOHOL AND THE PCL3, SAID SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF HEXANE, COMMERCIAL TETRADECANE HAVING A BOILING RANGE OF FROM 238*C. TO 250*C., MINERAL OIL HAVING A BOILING RANGE OF FROM 380*C. TO 450*C., PORAFFIN OIL HAVING A BOILING RANGE OF FROM 317*C. TO 360*C. AND HEXYL ETHER, AND MAINTAINING THE REACTION MIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM 5*C. TO 50*C. BY EXTERANL REFRIGERATION.
References Cited (Backward Citations)
US2226552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |