Patent US2977360A successfully refreshed from Google Patents.
US2977360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of s-triazine
Assignee: —
•
Filing: —
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Granted: 1961-03-28
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Expires: 1978-03-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/02; C08G18/022; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
IN THE PROCESS FOR PREPARING S-TRIAZINE-2,4,6(1H,3H, 5H)TRIONES FROM AN ISOCYANATE COMPOUND, FREE OF EPOXIDE REACTABLE GROUPS, SELECTED FROM THE GROUP CONSISTING OF AN ORGANIC MONOISOCYANATE, A 1,3-DIAZACYCLOBUTANE-2, 4-DIONE AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING CONTACTING SAID ISOCYANATE COMPOUND WITH AN EPOXIDE OF THE FORMULA
Claim 2
Dependent Claim
44 words
IN THE PROCESS FOR PREPARING S-TRIAZINE-2,4,6(1H,3H, 5H)TRIONES FROM AN ISOCYANATE COMPOUND, FREE OF EPOXIDE REACTABLE GROUPS, SELECTED FROM THE GROUP CONSISTING OF AN ORGANIC MONOISOCYANATE, A 1,3-DIAZACYCLOBUTANE-2, 4-DIONE AND MIXTURES THEREOF, THE IMPROVEMENT COMPRISING CONTACTING SAID ISOCYANATE COMPOUND WITH AN EPOXIDE OF THE FORMULA
Claim 3
Dependent Claim
41 words
A PROCESS FOR PREPARING TRIPHENYL-S-TRIAZINE-2,4,6 (1H,3H,5H)TRIONE WHICH COMPRISES CONTACTING PHENYL ISOCYANATE WITH ETHYLENE OXIDE AT A TEMPERATURE OF FROM ABOUT 200-220*C. UNDER AUTOGENOUS PRESSURE, THERE BEING EMPLOYED FROM ABOUT 0.025 TO 0.15 MOLE OF ETHYLENE OXIDE PER MOLE OF PHENYL ISOCYANATE.
Claim 4
Dependent Claim
41 words
A PROCESS FOR PREPARING TRIPHENYL-S-TRIAZINE-2,4,6 (1H,3H,5H)TRIONE WHICH COMPRISES CONTACTING PHENYL ISOCYANATE WITH ETHYLENE OXIDE AT A TEMPERATURE OF FROM ABOUT 200-220*C. UNDER AUTOGENOUS PRESSURE, THERE BEING EMPLOYED FROM ABOUT 0.025 TO 0.15 MOLE OF ETHYLENE OXIDE PER MOLE OF PHENYL ISOCYANATE.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |