US2974159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of primary-2-hydroxy-ethylphosphite
Assignee: Honeywell International Inc
•
Filing: 1959-06-10
•
Granted: 1961-03-07
•
Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Koral Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/1411
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR THE PRODUCTION OF PRIMARY-2-HYDROXYCHLORIDE AND ETHYLENE GLYCOL IN THE PROPORTION OF AT LEAST 2 MOLS OF ETHYLENE GLYCOL PER MOL OF PHOSPHORUS TRICHLORIDE BY ADDING THE PHOSPHORUS TRICHLORIDE TO THE ETHYLENE GLYCOL AT A TEMPERATURE BELOW ABOUT 80*C. AND MAINTAINING THE REACTION MIXTURE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT REACTION OF THE PHOSPHORUS TRICHLORIDE AND ETHYLENE GLYCOL TO PRODUCE PRIMARY-2-HYDROXYETHYLPHOSPHITE.
Claim 2
Dependent Claim
65 words
A PROCESS FOR THE PRODUCTION OF PRIMARY-2-HYDROXYCHLORIDE AND ETHYLENE GLYCOL IN THE PROPORTION OF AT LEAST 2 MOLS OF ETHYLENE GLYCOL PER MOL OF PHOSPHORUS TRICHLORIDE BY ADDING THE PHOSPHORUS TRICHLORIDE TO THE ETHYLENE GLYCOL AT A TEMPERATURE BELOW ABOUT 80*C. AND MAINTAINING THE REACTION MIXTURE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT REACTION OF THE PHOSPHORUS TRICHLORIDE AND ETHYLENE GLYCOL TO PRODUCE PRIMARY-2-HYDROXYETHYLPHOSPHITE.
References Cited (Backward Citations)
US2864847A
Cited
DE968486C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |