US2852550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amidation of phosphorus halides with organic amines
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-02-27
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Granted: 1958-09-16
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; C07F9/28; C07F9/38; C07F9/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
THE PROCESS OF AMIDATION WHICH COMPRISES ADDING ANHYDROUS AMMONIA TO A PARTIALLY AMIDATED REACTION MIXTURE, ONE REACTANT BEING A COMPOUND HAVING THE STRUCTURE
Claim 2
Dependent Claim
23 words
THE PROCESS OF AMIDATION WHICH COMPRISES ADDING ANHYDROUS AMMONIA TO A PARTIALLY AMIDATED REACTION MIXTURE, ONE REACTANT BEING A COMPOUND HAVING THE STRUCTURE
Claim 3
Dependent Claim
88 words
THE PROCESS WHICH COMPRISES REACTING IN AN ORGANIC SOLVENT INERT TO THE REACTANTS APPROXIMATELY ONE MOLECULAR PROPORTION OF A DI-LOWER ALKYL PHOSPHOROCHLORIDATE, APPROXIMATELY ONE MOLECULAR PROPORTION OF (R)2NH WHERE R IS A LOWER ALIPHATIC HYDROCARBON RADICAL AND APPROXIMATELY ONE MOLECULAR PROPORTION OF ANHYDROUS AMMONIA, THE AMMONIA BEING ADDED TO THE PARTIALLY AMIDATED REACTION PRODUCT TO NEUTRALIZE BY-PRODUCT AMINE HYDROCHLORIDE IN THE PRESENCE OF THE PARTIALLY AMIDATED PRODUCT BUT AMMONIA IN EXCESS OF THE AMINE HYDROCHLORIDE PRESENT AT ANY TIME BEING AVOIDED UNTIL ALL THE AMINE HAS BEEN CHARGED.
Claim 4
Dependent Claim
88 words
THE PROCESS WHICH COMPRISES REACTING IN AN ORGANIC SOLVENT INERT TO THE REACTANTS APPROXIMATELY ONE MOLECULAR PROPORTION OF A DI-LOWER ALKYL PHOSPHOROCHLORIDATE, APPROXIMATELY ONE MOLECULAR PROPORTION OF (R)2NH WHERE R IS A LOWER ALIPHATIC HYDROCARBON RADICAL AND APPROXIMATELY ONE MOLECULAR PROPORTION OF ANHYDROUS AMMONIA, THE AMMONIA BEING ADDED TO THE PARTIALLY AMIDATED REACTION PRODUCT TO NEUTRALIZE BY-PRODUCT AMINE HYDROCHLORIDE IN THE PRESENCE OF THE PARTIALLY AMIDATED PRODUCT BUT AMMONIA IN EXCESS OF THE AMINE HYDROCHLORIDE PRESENT AT ANY TIME BEING AVOIDED UNTIL ALL THE AMINE HAS BEEN CHARGED.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |