US2894031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cyclohexanone hydrazone hydrate
Assignee: WR Grace and Co
•
Filing: 1958-09-16
•
Granted: 1959-07-07
•
Expires: 1978-09-16
Abstract
No abstract record available.
Inventors
- 👤 Rudner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:03
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF PREPARING CYCLOHEXANONE HYDRAZONE HYDRATE WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION OF CHLORAMINE CONTAINING AT LEAST 5 MOLS OF AMMONIA PER MOL OF CHLORAMINE THEREIN WITH AN AQUEOUS SUSPENSION OF EYCLOHEXANONE TO INITIALLY FORM CYCLOHEXANECHLORIMINE, THE NUMBER OF MOLS OF SAID CHLORAMINE PRESENT EXCEEDING THE NUMBER OF MOLS OF SAID CYCLOHEXANONE ADDED, MAINTAINING IN THE REACTION MIXTURE A TEMPERATURE BETWEEN THE FREEZING POINT AND THE BOILING POINT OF SAID MIXTURE, CONTINUING THE REACTION UNTIL ALL OF SAID REACTIVE CYCLOHEXANECHLORIMINE HAS BEEN CONSUMED AND RECOVERING SAID HYDRACHLORIMINE HAS BEEN CONSUMED AND RECOVERING SAID HYDRAZONE HYDRATE TEHREFROM.
Claim 2
Independent Claim
97 words
A METHOD OF PREPARING CYCLOHEXANONE HYDRAZONE HYDRATE WHICH COMPRISES CONTACTING AN AQUEOUS SOLUTION OF CHLORAMINE CONTAINING AT LEAST 5 MOLS OF AMMONIA PER MOL OF CHLORAMINE THEREIN WITH AN AQUEOUS SUSPENSION OF EYCLOHEXANONE TO INITIALLY FORM CYCLOHEXANECHLORIMINE, THE NUMBER OF MOLS OF SAID CHLORAMINE PRESENT EXCEEDING THE NUMBER OF MOLS OF SAID CYCLOHEXANONE ADDED, MAINTAINING IN THE REACTION MIXTURE A TEMPERATURE BETWEEN THE FREEZING POINT AND THE BOILING POINT OF SAID MIXTURE, CONTINUING THE REACTION UNTIL ALL OF SAID REACTIVE CYCLOHEXANECHLORIMINE HAS BEEN CONSUMED AND RECOVERING SAID HYDRACHLORIMINE HAS BEEN CONSUMED AND RECOVERING SAID HYDRAZONE HYDRATE TEHREFROM.
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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |