US2706738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing pyrophosphortetraamides of secondary aliphatic and secondary heterocyclic amines in the presence of an inorganic base
Assignee: Victor Chemical Works
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Filing: 1950-03-23
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Granted: 1955-04-19
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Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Toy Arthur Dock Fon
- 👤 Jr James R Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:07
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; C07F9/2404; C07F9/2433; C07F9/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF MAKING A PYROPHOSPHORTETRAAMIDE OF A SECONDARY AMINE COMPRISING REACTING A MEMBER OF THE CLASS CONSISTING OF A BIS(DIALKYLAMIDO) PHOSPHORYL CHLORIDE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, DIPIPERIDINO PHOSPHORYL CHLORIDE AND DIMORPHOLIDO PHOSPHORYL CHLORIDE WITH WATER IN THE PRESENCE OF A BASE TO FORM THE PYROPHOSPHORTETRAAMIDE IN A SINGLE STEP REACTION, SAID BASE INCLUDING AT LEAST A MAJOR PROPORTION OF AN ALKALI METAL BASE, AND SEPARATING THE RESULTING PYROPHOSPHORTETRAAMIDE.
Claim 2
Independent Claim
77 words
THE METHOD OF MAKING A PYROPHOSPHORTETRAAMIDE OF A SECONDARY AMINE COMPRISING REACTING A MEMBER OF THE CLASS CONSISTING OF A BIS(DIALKYLAMIDO) PHOSPHORYL CHLORIDE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, DIPIPERIDINO PHOSPHORYL CHLORIDE AND DIMORPHOLIDO PHOSPHORYL CHLORIDE WITH WATER IN THE PRESENCE OF A BASE TO FORM THE PYROPHOSPHORTETRAAMIDE IN A SINGLE STEP REACTION, SAID BASE INCLUDING AT LEAST A MAJOR PROPORTION OF AN ALKALI METAL BASE, AND SEPARATING THE RESULTING PYROPHOSPHORTETRAAMIDE.
References Cited (Backward Citations)
GB631549A
Cited
US2502966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |